tools/perf/util/scripting-engines/trace-event-python.c

   1 /*
   2  * trace-event-python.  Feed trace events to an embedded Python interpreter.
   3  *
   4  * Copyright (C) 2010 Tom Zanussi <[email protected]>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include <Python.h>
  23
  24 #include <inttypes.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdbool.h>
  29 #include <errno.h>
  30 #include <linux/bitmap.h>
  31 #include <linux/compiler.h>
  32 #include <linux/time64.h>
  33 #ifdef HAVE_LIBTRACEEVENT
  34 #include <traceevent/event-parse.h>
  35 #endif
  36
  37 #include "../build-id.h"
  38 #include "../counts.h"
  39 #include "../debug.h"
  40 #include "../dso.h"
  41 #include "../callchain.h"
  42 #include "../env.h"
  43 #include "../evsel.h"
  44 #include "../event.h"
  45 #include "../thread.h"
  46 #include "../comm.h"
  47 #include "../machine.h"
  48 #include "../db-export.h"
  49 #include "../thread-stack.h"
  50 #include "../trace-event.h"
  51 #include "../call-path.h"
  52 #include "map.h"
  53 #include "symbol.h"
  54 #include "thread_map.h"
  55 #include "print_binary.h"
  56 #include "stat.h"
  57 #include "mem-events.h"
  58 #include "util/perf_regs.h"
  59
  60 #if PY_MAJOR_VERSION < 3
  61 #define _PyUnicode_FromString(arg) \
  62   PyString_FromString(arg)
  63 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
  64   PyString_FromStringAndSize((arg1), (arg2))
  65 #define _PyBytes_FromStringAndSize(arg1, arg2) \
  66   PyString_FromStringAndSize((arg1), (arg2))
  67 #define _PyLong_FromLong(arg) \
  68   PyInt_FromLong(arg)
  69 #define _PyLong_AsLong(arg) \
  70   PyInt_AsLong(arg)
  71 #define _PyCapsule_New(arg1, arg2, arg3) \
  72   PyCObject_FromVoidPtr((arg1), (arg2))
  73
  74 PyMODINIT_FUNC initperf_trace_context(void);
  75 #else
  76 #define _PyUnicode_FromString(arg) \
  77   PyUnicode_FromString(arg)
  78 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
  79   PyUnicode_FromStringAndSize((arg1), (arg2))
  80 #define _PyBytes_FromStringAndSize(arg1, arg2) \
  81   PyBytes_FromStringAndSize((arg1), (arg2))
  82 #define _PyLong_FromLong(arg) \
  83   PyLong_FromLong(arg)
  84 #define _PyLong_AsLong(arg) \
  85   PyLong_AsLong(arg)
  86 #define _PyCapsule_New(arg1, arg2, arg3) \
  87   PyCapsule_New((arg1), (arg2), (arg3))
  88
  89 PyMODINIT_FUNC PyInit_perf_trace_context(void);
  90 #endif
  91
  92 #ifdef HAVE_LIBTRACEEVENT
  93 #define TRACE_EVENT_TYPE_MAX                            \
  94         ((1 << (sizeof(unsigned short) * 8)) - 1)
  95
  96 #define N_COMMON_FIELDS 7
  97
  98 static char *cur_field_name;
  99 static int zero_flag_atom;
 100 #endif
 101
 102 #define MAX_FIELDS      64
 103
 104 extern struct scripting_context *scripting_context;
 105
 106 static PyObject *main_module, *main_dict;
 107
 108 struct tables {
 109         struct db_export        dbe;
 110         PyObject                *evsel_handler;
 111         PyObject                *machine_handler;
 112         PyObject                *thread_handler;
 113         PyObject                *comm_handler;
 114         PyObject                *comm_thread_handler;
 115         PyObject                *dso_handler;
 116         PyObject                *symbol_handler;
 117         PyObject                *branch_type_handler;
 118         PyObject                *sample_handler;
 119         PyObject                *call_path_handler;
 120         PyObject                *call_return_handler;
 121         PyObject                *synth_handler;
 122         PyObject                *context_switch_handler;
 123         bool                    db_export_mode;
 124 };
 125
 126 static struct tables tables_global;
 127
 128 static void handler_call_die(const char *handler_name) __noreturn;
 129 static void handler_call_die(const char *handler_name)
 130 {
 131         PyErr_Print();
 132         Py_FatalError("problem in Python trace event handler");
 133         // Py_FatalError does not return
 134         // but we have to make the compiler happy
 135         abort();
 136 }
 137
 138 /*
 139  * Insert val into the dictionary and decrement the reference counter.
 140  * This is necessary for dictionaries since PyDict_SetItemString() does not
 141  * steal a reference, as opposed to PyTuple_SetItem().
 142  */
 143 static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
 144 {
 145         PyDict_SetItemString(dict, key, val);
 146         Py_DECREF(val);
 147 }
 148
 149 static PyObject *get_handler(const char *handler_name)
 150 {
 151         PyObject *handler;
 152
 153         handler = PyDict_GetItemString(main_dict, handler_name);
 154         if (handler && !PyCallable_Check(handler))
 155                 return NULL;
 156         return handler;
 157 }
 158
 159 static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
 160 {
 161         PyObject *retval;
 162
 163         retval = PyObject_CallObject(handler, args);
 164         if (retval == NULL)
 165                 handler_call_die(die_msg);
 166         Py_DECREF(retval);
 167 }
 168
 169 static void try_call_object(const char *handler_name, PyObject *args)
 170 {
 171         PyObject *handler;
 172
 173         handler = get_handler(handler_name);
 174         if (handler)
 175                 call_object(handler, args, handler_name);
 176 }
 177
 178 #ifdef HAVE_LIBTRACEEVENT
 179 static int get_argument_count(PyObject *handler)
 180 {
 181         int arg_count = 0;
 182
 183         /*
 184          * The attribute for the code object is func_code in Python 2,
 185          * whereas it is __code__ in Python 3.0+.
 186          */
 187         PyObject *code_obj = PyObject_GetAttrString(handler,
 188                 "func_code");
 189         if (PyErr_Occurred()) {
 190                 PyErr_Clear();
 191                 code_obj = PyObject_GetAttrString(handler,
 192                         "__code__");
 193         }
 194         PyErr_Clear();
 195         if (code_obj) {
 196                 PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
 197                         "co_argcount");
 198                 if (arg_count_obj) {
 199                         arg_count = (int) _PyLong_AsLong(arg_count_obj);
 200                         Py_DECREF(arg_count_obj);
 201                 }
 202                 Py_DECREF(code_obj);
 203         }
 204         return arg_count;
 205 }
 206
 207 static void define_value(enum tep_print_arg_type field_type,
 208                          const char *ev_name,
 209                          const char *field_name,
 210                          const char *field_value,
 211                          const char *field_str)
 212 {
 213         const char *handler_name = "define_flag_value";
 214         PyObject *t;
 215         unsigned long long value;
 216         unsigned n = 0;
 217
 218         if (field_type == TEP_PRINT_SYMBOL)
 219                 handler_name = "define_symbolic_value";
 220
 221         t = PyTuple_New(4);
 222         if (!t)
 223                 Py_FatalError("couldn't create Python tuple");
 224
 225         value = eval_flag(field_value);
 226
 227         PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
 228         PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
 229         PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
 230         PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
 231
 232         try_call_object(handler_name, t);
 233
 234         Py_DECREF(t);
 235 }
 236
 237 static void define_values(enum tep_print_arg_type field_type,
 238                           struct tep_print_flag_sym *field,
 239                           const char *ev_name,
 240                           const char *field_name)
 241 {
 242         define_value(field_type, ev_name, field_name, field->value,
 243                      field->str);
 244
 245         if (field->next)
 246                 define_values(field_type, field->next, ev_name, field_name);
 247 }
 248
 249 static void define_field(enum tep_print_arg_type field_type,
 250                          const char *ev_name,
 251                          const char *field_name,
 252                          const char *delim)
 253 {
 254         const char *handler_name = "define_flag_field";
 255         PyObject *t;
 256         unsigned n = 0;
 257
 258         if (field_type == TEP_PRINT_SYMBOL)
 259                 handler_name = "define_symbolic_field";
 260
 261         if (field_type == TEP_PRINT_FLAGS)
 262                 t = PyTuple_New(3);
 263         else
 264                 t = PyTuple_New(2);
 265         if (!t)
 266                 Py_FatalError("couldn't create Python tuple");
 267
 268         PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
 269         PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
 270         if (field_type == TEP_PRINT_FLAGS)
 271                 PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
 272
 273         try_call_object(handler_name, t);
 274
 275         Py_DECREF(t);
 276 }
 277
 278 static void define_event_symbols(struct tep_event *event,
 279                                  const char *ev_name,
 280                                  struct tep_print_arg *args)
 281 {
 282         if (args == NULL)
 283                 return;
 284
 285         switch (args->type) {
 286         case TEP_PRINT_NULL:
 287                 break;
 288         case TEP_PRINT_ATOM:
 289                 define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
 290                              args->atom.atom);
 291                 zero_flag_atom = 0;
 292                 break;
 293         case TEP_PRINT_FIELD:
 294                 free(cur_field_name);
 295                 cur_field_name = strdup(args->field.name);
 296                 break;
 297         case TEP_PRINT_FLAGS:
 298                 define_event_symbols(event, ev_name, args->flags.field);
 299                 define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
 300                              args->flags.delim);
 301                 define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
 302                               cur_field_name);
 303                 break;
 304         case TEP_PRINT_SYMBOL:
 305                 define_event_symbols(event, ev_name, args->symbol.field);
 306                 define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
 307                 define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
 308                               cur_field_name);
 309                 break;
 310         case TEP_PRINT_HEX:
 311         case TEP_PRINT_HEX_STR:
 312                 define_event_symbols(event, ev_name, args->hex.field);
 313                 define_event_symbols(event, ev_name, args->hex.size);
 314                 break;
 315         case TEP_PRINT_INT_ARRAY:
 316                 define_event_symbols(event, ev_name, args->int_array.field);
 317                 define_event_symbols(event, ev_name, args->int_array.count);
 318                 define_event_symbols(event, ev_name, args->int_array.el_size);
 319                 break;
 320         case TEP_PRINT_STRING:
 321                 break;
 322         case TEP_PRINT_TYPE:
 323                 define_event_symbols(event, ev_name, args->typecast.item);
 324                 break;
 325         case TEP_PRINT_OP:
 326                 if (strcmp(args->op.op, ":") == 0)
 327                         zero_flag_atom = 1;
 328                 define_event_symbols(event, ev_name, args->op.left);
 329                 define_event_symbols(event, ev_name, args->op.right);
 330                 break;
 331         default:
 332                 /* gcc warns for these? */
 333         case TEP_PRINT_BSTRING:
 334         case TEP_PRINT_DYNAMIC_ARRAY:
 335         case TEP_PRINT_DYNAMIC_ARRAY_LEN:
 336         case TEP_PRINT_FUNC:
 337         case TEP_PRINT_BITMASK:
 338                 /* we should warn... */
 339                 return;
 340         }
 341
 342         if (args->next)
 343                 define_event_symbols(event, ev_name, args->next);
 344 }
 345
 346 static PyObject *get_field_numeric_entry(struct tep_event *event,
 347                 struct tep_format_field *field, void *data)
 348 {
 349         bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
 350         PyObject *obj = NULL, *list = NULL;
 351         unsigned long long val;
 352         unsigned int item_size, n_items, i;
 353
 354         if (is_array) {
 355                 list = PyList_New(field->arraylen);
 356                 item_size = field->size / field->arraylen;
 357                 n_items = field->arraylen;
 358         } else {
 359                 item_size = field->size;
 360                 n_items = 1;
 361         }
 362
 363         for (i = 0; i < n_items; i++) {
 364
 365                 val = read_size(event, data + field->offset + i * item_size,
 366                                 item_size);
 367                 if (field->flags & TEP_FIELD_IS_SIGNED) {
 368                         if ((long long)val >= LONG_MIN &&
 369                                         (long long)val <= LONG_MAX)
 370                                 obj = _PyLong_FromLong(val);
 371                         else
 372                                 obj = PyLong_FromLongLong(val);
 373                 } else {
 374                         if (val <= LONG_MAX)
 375                                 obj = _PyLong_FromLong(val);
 376                         else
 377                                 obj = PyLong_FromUnsignedLongLong(val);
 378                 }
 379                 if (is_array)
 380                         PyList_SET_ITEM(list, i, obj);
 381         }
 382         if (is_array)
 383                 obj = list;
 384         return obj;
 385 }
 386 #endif
 387
 388 static const char *get_dsoname(struct map *map)
 389 {
 390         const char *dsoname = "[unknown]";
 391         struct dso *dso = map ? map__dso(map) : NULL;
 392
 393         if (dso) {
 394                 if (symbol_conf.show_kernel_path && dso->long_name)
 395                         dsoname = dso->long_name;
 396                 else
 397                         dsoname = dso->name;
 398         }
 399
 400         return dsoname;
 401 }
 402
 403 static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
 404 {
 405         unsigned long offset;
 406
 407         if (al->addr < sym->end)
 408                 offset = al->addr - sym->start;
 409         else
 410                 offset = al->addr - map__start(al->map) - sym->start;
 411
 412         return offset;
 413 }
 414
 415 static PyObject *python_process_callchain(struct perf_sample *sample,
 416                                          struct evsel *evsel,
 417                                          struct addr_location *al)
 418 {
 419         PyObject *pylist;
 420         struct callchain_cursor *cursor;
 421
 422         pylist = PyList_New(0);
 423         if (!pylist)
 424                 Py_FatalError("couldn't create Python list");
 425
 426         if (!symbol_conf.use_callchain || !sample->callchain)
 427                 goto exit;
 428
 429         cursor = get_tls_callchain_cursor();
 430         if (thread__resolve_callchain(al->thread, cursor, evsel,
 431                                       sample, NULL, NULL,
 432                                       scripting_max_stack) != 0) {
 433                 pr_err("Failed to resolve callchain. Skipping\n");
 434                 goto exit;
 435         }
 436         callchain_cursor_commit(cursor);
 437
 438
 439         while (1) {
 440                 PyObject *pyelem;
 441                 struct callchain_cursor_node *node;
 442                 node = callchain_cursor_current(cursor);
 443                 if (!node)
 444                         break;
 445
 446                 pyelem = PyDict_New();
 447                 if (!pyelem)
 448                         Py_FatalError("couldn't create Python dictionary");
 449
 450
 451                 pydict_set_item_string_decref(pyelem, "ip",
 452                                 PyLong_FromUnsignedLongLong(node->ip));
 453
 454                 if (node->ms.sym) {
 455                         PyObject *pysym  = PyDict_New();
 456                         if (!pysym)
 457                                 Py_FatalError("couldn't create Python dictionary");
 458                         pydict_set_item_string_decref(pysym, "start",
 459                                         PyLong_FromUnsignedLongLong(node->ms.sym->start));
 460                         pydict_set_item_string_decref(pysym, "end",
 461                                         PyLong_FromUnsignedLongLong(node->ms.sym->end));
 462                         pydict_set_item_string_decref(pysym, "binding",
 463                                         _PyLong_FromLong(node->ms.sym->binding));
 464                         pydict_set_item_string_decref(pysym, "name",
 465                                         _PyUnicode_FromStringAndSize(node->ms.sym->name,
 466                                                         node->ms.sym->namelen));
 467                         pydict_set_item_string_decref(pyelem, "sym", pysym);
 468
 469                         if (node->ms.map) {
 470                                 struct map *map = node->ms.map;
 471                                 struct addr_location node_al;
 472                                 unsigned long offset;
 473
 474                                 addr_location__init(&node_al);
 475                                 node_al.addr = map__map_ip(map, node->ip);
 476                                 node_al.map  = map__get(map);
 477                                 offset = get_offset(node->ms.sym, &node_al);
 478                                 addr_location__exit(&node_al);
 479
 480                                 pydict_set_item_string_decref(
 481                                         pyelem, "sym_off",
 482                                         PyLong_FromUnsignedLongLong(offset));
 483                         }
 484                         if (node->srcline && strcmp(":0", node->srcline)) {
 485                                 pydict_set_item_string_decref(
 486                                         pyelem, "sym_srcline",
 487                                         _PyUnicode_FromString(node->srcline));
 488                         }
 489                 }
 490
 491                 if (node->ms.map) {
 492                         const char *dsoname = get_dsoname(node->ms.map);
 493
 494                         pydict_set_item_string_decref(pyelem, "dso",
 495                                         _PyUnicode_FromString(dsoname));
 496                 }
 497
 498                 callchain_cursor_advance(cursor);
 499                 PyList_Append(pylist, pyelem);
 500                 Py_DECREF(pyelem);
 501         }
 502
 503 exit:
 504         return pylist;
 505 }
 506
 507 static PyObject *python_process_brstack(struct perf_sample *sample,
 508                                         struct thread *thread)
 509 {
 510         struct branch_stack *br = sample->branch_stack;
 511         struct branch_entry *entries = perf_sample__branch_entries(sample);
 512         PyObject *pylist;
 513         u64 i;
 514
 515         pylist = PyList_New(0);
 516         if (!pylist)
 517                 Py_FatalError("couldn't create Python list");
 518
 519         if (!(br && br->nr))
 520                 goto exit;
 521
 522         for (i = 0; i < br->nr; i++) {
 523                 PyObject *pyelem;
 524                 struct addr_location al;
 525                 const char *dsoname;
 526
 527                 pyelem = PyDict_New();
 528                 if (!pyelem)
 529                         Py_FatalError("couldn't create Python dictionary");
 530
 531                 pydict_set_item_string_decref(pyelem, "from",
 532                     PyLong_FromUnsignedLongLong(entries[i].from));
 533                 pydict_set_item_string_decref(pyelem, "to",
 534                     PyLong_FromUnsignedLongLong(entries[i].to));
 535                 pydict_set_item_string_decref(pyelem, "mispred",
 536                     PyBool_FromLong(entries[i].flags.mispred));
 537                 pydict_set_item_string_decref(pyelem, "predicted",
 538                     PyBool_FromLong(entries[i].flags.predicted));
 539                 pydict_set_item_string_decref(pyelem, "in_tx",
 540                     PyBool_FromLong(entries[i].flags.in_tx));
 541                 pydict_set_item_string_decref(pyelem, "abort",
 542                     PyBool_FromLong(entries[i].flags.abort));
 543                 pydict_set_item_string_decref(pyelem, "cycles",
 544                     PyLong_FromUnsignedLongLong(entries[i].flags.cycles));
 545
 546                 addr_location__init(&al);
 547                 thread__find_map_fb(thread, sample->cpumode,
 548                                     entries[i].from, &al);
 549                 dsoname = get_dsoname(al.map);
 550                 pydict_set_item_string_decref(pyelem, "from_dsoname",
 551                                               _PyUnicode_FromString(dsoname));
 552
 553                 thread__find_map_fb(thread, sample->cpumode,
 554                                     entries[i].to, &al);
 555                 dsoname = get_dsoname(al.map);
 556                 pydict_set_item_string_decref(pyelem, "to_dsoname",
 557                                               _PyUnicode_FromString(dsoname));
 558
 559                 addr_location__exit(&al);
 560                 PyList_Append(pylist, pyelem);
 561                 Py_DECREF(pyelem);
 562         }
 563
 564 exit:
 565         return pylist;
 566 }
 567
 568 static int get_symoff(struct symbol *sym, struct addr_location *al,
 569                       bool print_off, char *bf, int size)
 570 {
 571         unsigned long offset;
 572
 573         if (!sym || !sym->name[0])
 574                 return scnprintf(bf, size, "%s", "[unknown]");
 575
 576         if (!print_off)
 577                 return scnprintf(bf, size, "%s", sym->name);
 578
 579         offset = get_offset(sym, al);
 580
 581         return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
 582 }
 583
 584 static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
 585 {
 586         if (!flags->mispred  && !flags->predicted)
 587                 return scnprintf(bf, size, "%s", "-");
 588
 589         if (flags->mispred)
 590                 return scnprintf(bf, size, "%s", "M");
 591
 592         return scnprintf(bf, size, "%s", "P");
 593 }
 594
 595 static PyObject *python_process_brstacksym(struct perf_sample *sample,
 596                                            struct thread *thread)
 597 {
 598         struct branch_stack *br = sample->branch_stack;
 599         struct branch_entry *entries = perf_sample__branch_entries(sample);
 600         PyObject *pylist;
 601         u64 i;
 602         char bf[512];
 603
 604         pylist = PyList_New(0);
 605         if (!pylist)
 606                 Py_FatalError("couldn't create Python list");
 607
 608         if (!(br && br->nr))
 609                 goto exit;
 610
 611         for (i = 0; i < br->nr; i++) {
 612                 PyObject *pyelem;
 613                 struct addr_location al;
 614
 615                 addr_location__init(&al);
 616                 pyelem = PyDict_New();
 617                 if (!pyelem)
 618                         Py_FatalError("couldn't create Python dictionary");
 619
 620                 thread__find_symbol_fb(thread, sample->cpumode,
 621                                        entries[i].from, &al);
 622                 get_symoff(al.sym, &al, true, bf, sizeof(bf));
 623                 pydict_set_item_string_decref(pyelem, "from",
 624                                               _PyUnicode_FromString(bf));
 625
 626                 thread__find_symbol_fb(thread, sample->cpumode,
 627                                        entries[i].to, &al);
 628                 get_symoff(al.sym, &al, true, bf, sizeof(bf));
 629                 pydict_set_item_string_decref(pyelem, "to",
 630                                               _PyUnicode_FromString(bf));
 631
 632                 get_br_mspred(&entries[i].flags, bf, sizeof(bf));
 633                 pydict_set_item_string_decref(pyelem, "pred",
 634                                               _PyUnicode_FromString(bf));
 635
 636                 if (entries[i].flags.in_tx) {
 637                         pydict_set_item_string_decref(pyelem, "in_tx",
 638                                               _PyUnicode_FromString("X"));
 639                 } else {
 640                         pydict_set_item_string_decref(pyelem, "in_tx",
 641                                               _PyUnicode_FromString("-"));
 642                 }
 643
 644                 if (entries[i].flags.abort) {
 645                         pydict_set_item_string_decref(pyelem, "abort",
 646                                               _PyUnicode_FromString("A"));
 647                 } else {
 648                         pydict_set_item_string_decref(pyelem, "abort",
 649                                               _PyUnicode_FromString("-"));
 650                 }
 651
 652                 PyList_Append(pylist, pyelem);
 653                 Py_DECREF(pyelem);
 654                 addr_location__exit(&al);
 655         }
 656
 657 exit:
 658         return pylist;
 659 }
 660
 661 static PyObject *get_sample_value_as_tuple(struct sample_read_value *value,
 662                                            u64 read_format)
 663 {
 664         PyObject *t;
 665
 666         t = PyTuple_New(3);
 667         if (!t)
 668                 Py_FatalError("couldn't create Python tuple");
 669         PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
 670         PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
 671         if (read_format & PERF_FORMAT_LOST)
 672                 PyTuple_SetItem(t, 2, PyLong_FromUnsignedLongLong(value->lost));
 673
 674         return t;
 675 }
 676
 677 static void set_sample_read_in_dict(PyObject *dict_sample,
 678                                          struct perf_sample *sample,
 679                                          struct evsel *evsel)
 680 {
 681         u64 read_format = evsel->core.attr.read_format;
 682         PyObject *values;
 683         unsigned int i;
 684
 685         if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
 686                 pydict_set_item_string_decref(dict_sample, "time_enabled",
 687                         PyLong_FromUnsignedLongLong(sample->read.time_enabled));
 688         }
 689
 690         if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
 691                 pydict_set_item_string_decref(dict_sample, "time_running",
 692                         PyLong_FromUnsignedLongLong(sample->read.time_running));
 693         }
 694
 695         if (read_format & PERF_FORMAT_GROUP)
 696                 values = PyList_New(sample->read.group.nr);
 697         else
 698                 values = PyList_New(1);
 699
 700         if (!values)
 701                 Py_FatalError("couldn't create Python list");
 702
 703         if (read_format & PERF_FORMAT_GROUP) {
 704                 struct sample_read_value *v = sample->read.group.values;
 705
 706                 i = 0;
 707                 sample_read_group__for_each(v, sample->read.group.nr, read_format) {
 708                         PyObject *t = get_sample_value_as_tuple(v, read_format);
 709                         PyList_SET_ITEM(values, i, t);
 710                         i++;
 711                 }
 712         } else {
 713                 PyObject *t = get_sample_value_as_tuple(&sample->read.one,
 714                                                         read_format);
 715                 PyList_SET_ITEM(values, 0, t);
 716         }
 717         pydict_set_item_string_decref(dict_sample, "values", values);
 718 }
 719
 720 static void set_sample_datasrc_in_dict(PyObject *dict,
 721                                        struct perf_sample *sample)
 722 {
 723         struct mem_info mi = { .data_src.val = sample->data_src };
 724         char decode[100];
 725
 726         pydict_set_item_string_decref(dict, "datasrc",
 727                         PyLong_FromUnsignedLongLong(sample->data_src));
 728
 729         perf_script__meminfo_scnprintf(decode, 100, &mi);
 730
 731         pydict_set_item_string_decref(dict, "datasrc_decode",
 732                         _PyUnicode_FromString(decode));
 733 }
 734
 735 static void regs_map(struct regs_dump *regs, uint64_t mask, const char *arch, char *bf, int size)
 736 {
 737         unsigned int i = 0, r;
 738         int printed = 0;
 739
 740         bf[0] = 0;
 741
 742         if (size <= 0)
 743                 return;
 744
 745         if (!regs || !regs->regs)
 746                 return;
 747
 748         for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
 749                 u64 val = regs->regs[i++];
 750
 751                 printed += scnprintf(bf + printed, size - printed,
 752                                      "%5s:0x%" PRIx64 " ",
 753                                      perf_reg_name(r, arch), val);
 754         }
 755 }
 756
 757 static void set_regs_in_dict(PyObject *dict,
 758                              struct perf_sample *sample,
 759                              struct evsel *evsel)
 760 {
 761         struct perf_event_attr *attr = &evsel->core.attr;
 762         const char *arch = perf_env__arch(evsel__env(evsel));
 763
 764         /*
 765          * Here value 28 is a constant size which can be used to print
 766          * one register value and its corresponds to:
 767          * 16 chars is to specify 64 bit register in hexadecimal.
 768          * 2 chars is for appending "0x" to the hexadecimal value and
 769          * 10 chars is for register name.
 770          */
 771         int size = __sw_hweight64(attr->sample_regs_intr) * 28;
 772         char *bf = malloc(size);
 773
 774         regs_map(&sample->intr_regs, attr->sample_regs_intr, arch, bf, size);
 775
 776         pydict_set_item_string_decref(dict, "iregs",
 777                         _PyUnicode_FromString(bf));
 778
 779         regs_map(&sample->user_regs, attr->sample_regs_user, arch, bf, size);
 780
 781         pydict_set_item_string_decref(dict, "uregs",
 782                         _PyUnicode_FromString(bf));
 783         free(bf);
 784 }
 785
 786 static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
 787                             const char *dso_field, const char *dso_bid_field,
 788                             const char *dso_map_start, const char *dso_map_end,
 789                             const char *sym_field, const char *symoff_field)
 790 {
 791         char sbuild_id[SBUILD_ID_SIZE];
 792
 793         if (al->map) {
 794                 struct dso *dso = map__dso(al->map);
 795
 796                 pydict_set_item_string_decref(dict, dso_field, _PyUnicode_FromString(dso->name));
 797                 build_id__sprintf(&dso->bid, sbuild_id);
 798                 pydict_set_item_string_decref(dict, dso_bid_field,
 799                         _PyUnicode_FromString(sbuild_id));
 800                 pydict_set_item_string_decref(dict, dso_map_start,
 801                         PyLong_FromUnsignedLong(map__start(al->map)));
 802                 pydict_set_item_string_decref(dict, dso_map_end,
 803                         PyLong_FromUnsignedLong(map__end(al->map)));
 804         }
 805         if (al->sym) {
 806                 pydict_set_item_string_decref(dict, sym_field,
 807                         _PyUnicode_FromString(al->sym->name));
 808                 pydict_set_item_string_decref(dict, symoff_field,
 809                         PyLong_FromUnsignedLong(get_offset(al->sym, al)));
 810         }
 811 }
 812
 813 static void set_sample_flags(PyObject *dict, u32 flags)
 814 {
 815         const char *ch = PERF_IP_FLAG_CHARS;
 816         char *p, str[33];
 817
 818         for (p = str; *ch; ch++, flags >>= 1) {
 819                 if (flags & 1)
 820                         *p++ = *ch;
 821         }
 822         *p = 0;
 823         pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str));
 824 }
 825
 826 static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample)
 827 {
 828         char flags_disp[SAMPLE_FLAGS_BUF_SIZE];
 829
 830         set_sample_flags(dict_sample, sample->flags);
 831         perf_sample__sprintf_flags(sample->flags, flags_disp, sizeof(flags_disp));
 832         pydict_set_item_string_decref(dict_sample, "flags_disp",
 833                 _PyUnicode_FromString(flags_disp));
 834 }
 835
 836 static PyObject *get_perf_sample_dict(struct perf_sample *sample,
 837                                          struct evsel *evsel,
 838                                          struct addr_location *al,
 839                                          struct addr_location *addr_al,
 840                                          PyObject *callchain)
 841 {
 842         PyObject *dict, *dict_sample, *brstack, *brstacksym;
 843
 844         dict = PyDict_New();
 845         if (!dict)
 846                 Py_FatalError("couldn't create Python dictionary");
 847
 848         dict_sample = PyDict_New();
 849         if (!dict_sample)
 850                 Py_FatalError("couldn't create Python dictionary");
 851
 852         pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
 853         pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
 854
 855         pydict_set_item_string_decref(dict_sample, "pid",
 856                         _PyLong_FromLong(sample->pid));
 857         pydict_set_item_string_decref(dict_sample, "tid",
 858                         _PyLong_FromLong(sample->tid));
 859         pydict_set_item_string_decref(dict_sample, "cpu",
 860                         _PyLong_FromLong(sample->cpu));
 861         pydict_set_item_string_decref(dict_sample, "ip",
 862                         PyLong_FromUnsignedLongLong(sample->ip));
 863         pydict_set_item_string_decref(dict_sample, "time",
 864                         PyLong_FromUnsignedLongLong(sample->time));
 865         pydict_set_item_string_decref(dict_sample, "period",
 866                         PyLong_FromUnsignedLongLong(sample->period));
 867         pydict_set_item_string_decref(dict_sample, "phys_addr",
 868                         PyLong_FromUnsignedLongLong(sample->phys_addr));
 869         pydict_set_item_string_decref(dict_sample, "addr",
 870                         PyLong_FromUnsignedLongLong(sample->addr));
 871         set_sample_read_in_dict(dict_sample, sample, evsel);
 872         pydict_set_item_string_decref(dict_sample, "weight",
 873                         PyLong_FromUnsignedLongLong(sample->weight));
 874         pydict_set_item_string_decref(dict_sample, "transaction",
 875                         PyLong_FromUnsignedLongLong(sample->transaction));
 876         set_sample_datasrc_in_dict(dict_sample, sample);
 877         pydict_set_item_string_decref(dict, "sample", dict_sample);
 878
 879         pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
 880                         (const char *)sample->raw_data, sample->raw_size));
 881         pydict_set_item_string_decref(dict, "comm",
 882                         _PyUnicode_FromString(thread__comm_str(al->thread)));
 883         set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end",
 884                         "symbol", "symoff");
 885
 886         pydict_set_item_string_decref(dict, "callchain", callchain);
 887
 888         brstack = python_process_brstack(sample, al->thread);
 889         pydict_set_item_string_decref(dict, "brstack", brstack);
 890
 891         brstacksym = python_process_brstacksym(sample, al->thread);
 892         pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
 893
 894         if (sample->machine_pid) {
 895                 pydict_set_item_string_decref(dict_sample, "machine_pid",
 896                                 _PyLong_FromLong(sample->machine_pid));
 897                 pydict_set_item_string_decref(dict_sample, "vcpu",
 898                                 _PyLong_FromLong(sample->vcpu));
 899         }
 900
 901         pydict_set_item_string_decref(dict_sample, "cpumode",
 902                         _PyLong_FromLong((unsigned long)sample->cpumode));
 903
 904         if (addr_al) {
 905                 pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
 906                         PyBool_FromLong(1));
 907                 set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid",
 908                                 "addr_dso_map_start", "addr_dso_map_end",
 909                                 "addr_symbol", "addr_symoff");
 910         }
 911
 912         if (sample->flags)
 913                 python_process_sample_flags(sample, dict_sample);
 914
 915         /* Instructions per cycle (IPC) */
 916         if (sample->insn_cnt && sample->cyc_cnt) {
 917                 pydict_set_item_string_decref(dict_sample, "insn_cnt",
 918                         PyLong_FromUnsignedLongLong(sample->insn_cnt));
 919                 pydict_set_item_string_decref(dict_sample, "cyc_cnt",
 920                         PyLong_FromUnsignedLongLong(sample->cyc_cnt));
 921         }
 922
 923         set_regs_in_dict(dict, sample, evsel);
 924
 925         return dict;
 926 }
 927
 928 #ifdef HAVE_LIBTRACEEVENT
 929 static void python_process_tracepoint(struct perf_sample *sample,
 930                                       struct evsel *evsel,
 931                                       struct addr_location *al,
 932                                       struct addr_location *addr_al)
 933 {
 934         struct tep_event *event = evsel->tp_format;
 935         PyObject *handler, *context, *t, *obj = NULL, *callchain;
 936         PyObject *dict = NULL, *all_entries_dict = NULL;
 937         static char handler_name[256];
 938         struct tep_format_field *field;
 939         unsigned long s, ns;
 940         unsigned n = 0;
 941         int pid;
 942         int cpu = sample->cpu;
 943         void *data = sample->raw_data;
 944         unsigned long long nsecs = sample->time;
 945         const char *comm = thread__comm_str(al->thread);
 946         const char *default_handler_name = "trace_unhandled";
 947         DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
 948
 949         bitmap_zero(events_defined, TRACE_EVENT_TYPE_MAX);
 950
 951         if (!event) {
 952                 snprintf(handler_name, sizeof(handler_name),
 953                          "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
 954                 Py_FatalError(handler_name);
 955         }
 956
 957         pid = raw_field_value(event, "common_pid", data);
 958
 959         sprintf(handler_name, "%s__%s", event->system, event->name);
 960
 961         if (!__test_and_set_bit(event->id, events_defined))
 962                 define_event_symbols(event, handler_name, event->print_fmt.args);
 963
 964         handler = get_handler(handler_name);
 965         if (!handler) {
 966                 handler = get_handler(default_handler_name);
 967                 if (!handler)
 968                         return;
 969                 dict = PyDict_New();
 970                 if (!dict)
 971                         Py_FatalError("couldn't create Python dict");
 972         }
 973
 974         t = PyTuple_New(MAX_FIELDS);
 975         if (!t)
 976                 Py_FatalError("couldn't create Python tuple");
 977
 978
 979         s = nsecs / NSEC_PER_SEC;
 980         ns = nsecs - s * NSEC_PER_SEC;
 981
 982         context = _PyCapsule_New(scripting_context, NULL, NULL);
 983
 984         PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
 985         PyTuple_SetItem(t, n++, context);
 986
 987         /* ip unwinding */
 988         callchain = python_process_callchain(sample, evsel, al);
 989         /* Need an additional reference for the perf_sample dict */
 990         Py_INCREF(callchain);
 991
 992         if (!dict) {
 993                 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
 994                 PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
 995                 PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
 996                 PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
 997                 PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
 998                 PyTuple_SetItem(t, n++, callchain);
 999         } else {
1000                 pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
1001                 pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
1002                 pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
1003                 pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
1004                 pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
1005                 pydict_set_item_string_decref(dict, "common_callchain", callchain);
1006         }
1007         for (field = event->format.fields; field; field = field->next) {
1008                 unsigned int offset, len;
1009                 unsigned long long val;
1010
1011                 if (field->flags & TEP_FIELD_IS_ARRAY) {
1012                         offset = field->offset;
1013                         len    = field->size;
1014                         if (field->flags & TEP_FIELD_IS_DYNAMIC) {
1015                                 val     = tep_read_number(scripting_context->pevent,
1016                                                           data + offset, len);
1017                                 offset  = val;
1018                                 len     = offset >> 16;
1019                                 offset &= 0xffff;
1020                                 if (tep_field_is_relative(field->flags))
1021                                         offset += field->offset + field->size;
1022                         }
1023                         if (field->flags & TEP_FIELD_IS_STRING &&
1024                             is_printable_array(data + offset, len)) {
1025                                 obj = _PyUnicode_FromString((char *) data + offset);
1026                         } else {
1027                                 obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
1028                                 field->flags &= ~TEP_FIELD_IS_STRING;
1029                         }
1030                 } else { /* FIELD_IS_NUMERIC */
1031                         obj = get_field_numeric_entry(event, field, data);
1032                 }
1033                 if (!dict)
1034                         PyTuple_SetItem(t, n++, obj);
1035                 else
1036                         pydict_set_item_string_decref(dict, field->name, obj);
1037
1038         }
1039
1040         if (dict)
1041                 PyTuple_SetItem(t, n++, dict);
1042
1043         if (get_argument_count(handler) == (int) n + 1) {
1044                 all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al,
1045                         callchain);
1046                 PyTuple_SetItem(t, n++, all_entries_dict);
1047         } else {
1048                 Py_DECREF(callchain);
1049         }
1050
1051         if (_PyTuple_Resize(&t, n) == -1)
1052                 Py_FatalError("error resizing Python tuple");
1053
1054         if (!dict)
1055                 call_object(handler, t, handler_name);
1056         else
1057                 call_object(handler, t, default_handler_name);
1058
1059         Py_DECREF(t);
1060 }
1061 #else
1062 static void python_process_tracepoint(struct perf_sample *sample __maybe_unused,
1063                                       struct evsel *evsel __maybe_unused,
1064                                       struct addr_location *al __maybe_unused,
1065                                       struct addr_location *addr_al __maybe_unused)
1066 {
1067         fprintf(stderr, "Tracepoint events are not supported because "
1068                         "perf is not linked with libtraceevent.\n");
1069 }
1070 #endif
1071
1072 static PyObject *tuple_new(unsigned int sz)
1073 {
1074         PyObject *t;
1075
1076         t = PyTuple_New(sz);
1077         if (!t)
1078                 Py_FatalError("couldn't create Python tuple");
1079         return t;
1080 }
1081
1082 static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
1083 {
1084 #if BITS_PER_LONG == 64
1085         return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1086 #endif
1087 #if BITS_PER_LONG == 32
1088         return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
1089 #endif
1090 }
1091
1092 /*
1093  * Databases support only signed 64-bit numbers, so even though we are
1094  * exporting a u64, it must be as s64.
1095  */
1096 #define tuple_set_d64 tuple_set_s64
1097
1098 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
1099 {
1100 #if BITS_PER_LONG == 64
1101         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1102 #endif
1103 #if BITS_PER_LONG == 32
1104         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
1105 #endif
1106 }
1107
1108 static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
1109 {
1110         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1111 }
1112
1113 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
1114 {
1115         return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1116 }
1117
1118 static int tuple_set_bool(PyObject *t, unsigned int pos, bool val)
1119 {
1120         return PyTuple_SetItem(t, pos, PyBool_FromLong(val));
1121 }
1122
1123 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
1124 {
1125         return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
1126 }
1127
1128 static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
1129                            unsigned int sz)
1130 {
1131         return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
1132 }
1133
1134 static int python_export_evsel(struct db_export *dbe, struct evsel *evsel)
1135 {
1136         struct tables *tables = container_of(dbe, struct tables, dbe);
1137         PyObject *t;
1138
1139         t = tuple_new(2);
1140
1141         tuple_set_d64(t, 0, evsel->db_id);
1142         tuple_set_string(t, 1, evsel__name(evsel));
1143
1144         call_object(tables->evsel_handler, t, "evsel_table");
1145
1146         Py_DECREF(t);
1147
1148         return 0;
1149 }
1150
1151 static int python_export_machine(struct db_export *dbe,
1152                                  struct machine *machine)
1153 {
1154         struct tables *tables = container_of(dbe, struct tables, dbe);
1155         PyObject *t;
1156
1157         t = tuple_new(3);
1158
1159         tuple_set_d64(t, 0, machine->db_id);
1160         tuple_set_s32(t, 1, machine->pid);
1161         tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
1162
1163         call_object(tables->machine_handler, t, "machine_table");
1164
1165         Py_DECREF(t);
1166
1167         return 0;
1168 }
1169
1170 static int python_export_thread(struct db_export *dbe, struct thread *thread,
1171                                 u64 main_thread_db_id, struct machine *machine)
1172 {
1173         struct tables *tables = container_of(dbe, struct tables, dbe);
1174         PyObject *t;
1175
1176         t = tuple_new(5);
1177
1178         tuple_set_d64(t, 0, thread__db_id(thread));
1179         tuple_set_d64(t, 1, machine->db_id);
1180         tuple_set_d64(t, 2, main_thread_db_id);
1181         tuple_set_s32(t, 3, thread__pid(thread));
1182         tuple_set_s32(t, 4, thread__tid(thread));
1183
1184         call_object(tables->thread_handler, t, "thread_table");
1185
1186         Py_DECREF(t);
1187
1188         return 0;
1189 }
1190
1191 static int python_export_comm(struct db_export *dbe, struct comm *comm,
1192                               struct thread *thread)
1193 {
1194         struct tables *tables = container_of(dbe, struct tables, dbe);
1195         PyObject *t;
1196
1197         t = tuple_new(5);
1198
1199         tuple_set_d64(t, 0, comm->db_id);
1200         tuple_set_string(t, 1, comm__str(comm));
1201         tuple_set_d64(t, 2, thread__db_id(thread));
1202         tuple_set_d64(t, 3, comm->start);
1203         tuple_set_s32(t, 4, comm->exec);
1204
1205         call_object(tables->comm_handler, t, "comm_table");
1206
1207         Py_DECREF(t);
1208
1209         return 0;
1210 }
1211
1212 static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1213                                      struct comm *comm, struct thread *thread)
1214 {
1215         struct tables *tables = container_of(dbe, struct tables, dbe);
1216         PyObject *t;
1217
1218         t = tuple_new(3);
1219
1220         tuple_set_d64(t, 0, db_id);
1221         tuple_set_d64(t, 1, comm->db_id);
1222         tuple_set_d64(t, 2, thread__db_id(thread));
1223
1224         call_object(tables->comm_thread_handler, t, "comm_thread_table");
1225
1226         Py_DECREF(t);
1227
1228         return 0;
1229 }
1230
1231 static int python_export_dso(struct db_export *dbe, struct dso *dso,
1232                              struct machine *machine)
1233 {
1234         struct tables *tables = container_of(dbe, struct tables, dbe);
1235         char sbuild_id[SBUILD_ID_SIZE];
1236         PyObject *t;
1237
1238         build_id__sprintf(&dso->bid, sbuild_id);
1239
1240         t = tuple_new(5);
1241
1242         tuple_set_d64(t, 0, dso->db_id);
1243         tuple_set_d64(t, 1, machine->db_id);
1244         tuple_set_string(t, 2, dso->short_name);
1245         tuple_set_string(t, 3, dso->long_name);
1246         tuple_set_string(t, 4, sbuild_id);
1247
1248         call_object(tables->dso_handler, t, "dso_table");
1249
1250         Py_DECREF(t);
1251
1252         return 0;
1253 }
1254
1255 static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1256                                 struct dso *dso)
1257 {
1258         struct tables *tables = container_of(dbe, struct tables, dbe);
1259         u64 *sym_db_id = symbol__priv(sym);
1260         PyObject *t;
1261
1262         t = tuple_new(6);
1263
1264         tuple_set_d64(t, 0, *sym_db_id);
1265         tuple_set_d64(t, 1, dso->db_id);
1266         tuple_set_d64(t, 2, sym->start);
1267         tuple_set_d64(t, 3, sym->end);
1268         tuple_set_s32(t, 4, sym->binding);
1269         tuple_set_string(t, 5, sym->name);
1270
1271         call_object(tables->symbol_handler, t, "symbol_table");
1272
1273         Py_DECREF(t);
1274
1275         return 0;
1276 }
1277
1278 static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1279                                      const char *name)
1280 {
1281         struct tables *tables = container_of(dbe, struct tables, dbe);
1282         PyObject *t;
1283
1284         t = tuple_new(2);
1285
1286         tuple_set_s32(t, 0, branch_type);
1287         tuple_set_string(t, 1, name);
1288
1289         call_object(tables->branch_type_handler, t, "branch_type_table");
1290
1291         Py_DECREF(t);
1292
1293         return 0;
1294 }
1295
1296 static void python_export_sample_table(struct db_export *dbe,
1297                                        struct export_sample *es)
1298 {
1299         struct tables *tables = container_of(dbe, struct tables, dbe);
1300         PyObject *t;
1301
1302         t = tuple_new(25);
1303
1304         tuple_set_d64(t, 0, es->db_id);
1305         tuple_set_d64(t, 1, es->evsel->db_id);
1306         tuple_set_d64(t, 2, maps__machine(es->al->maps)->db_id);
1307         tuple_set_d64(t, 3, thread__db_id(es->al->thread));
1308         tuple_set_d64(t, 4, es->comm_db_id);
1309         tuple_set_d64(t, 5, es->dso_db_id);
1310         tuple_set_d64(t, 6, es->sym_db_id);
1311         tuple_set_d64(t, 7, es->offset);
1312         tuple_set_d64(t, 8, es->sample->ip);
1313         tuple_set_d64(t, 9, es->sample->time);
1314         tuple_set_s32(t, 10, es->sample->cpu);
1315         tuple_set_d64(t, 11, es->addr_dso_db_id);
1316         tuple_set_d64(t, 12, es->addr_sym_db_id);
1317         tuple_set_d64(t, 13, es->addr_offset);
1318         tuple_set_d64(t, 14, es->sample->addr);
1319         tuple_set_d64(t, 15, es->sample->period);
1320         tuple_set_d64(t, 16, es->sample->weight);
1321         tuple_set_d64(t, 17, es->sample->transaction);
1322         tuple_set_d64(t, 18, es->sample->data_src);
1323         tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1324         tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1325         tuple_set_d64(t, 21, es->call_path_id);
1326         tuple_set_d64(t, 22, es->sample->insn_cnt);
1327         tuple_set_d64(t, 23, es->sample->cyc_cnt);
1328         tuple_set_s32(t, 24, es->sample->flags);
1329
1330         call_object(tables->sample_handler, t, "sample_table");
1331
1332         Py_DECREF(t);
1333 }
1334
1335 static void python_export_synth(struct db_export *dbe, struct export_sample *es)
1336 {
1337         struct tables *tables = container_of(dbe, struct tables, dbe);
1338         PyObject *t;
1339
1340         t = tuple_new(3);
1341
1342         tuple_set_d64(t, 0, es->db_id);
1343         tuple_set_d64(t, 1, es->evsel->core.attr.config);
1344         tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
1345
1346         call_object(tables->synth_handler, t, "synth_data");
1347
1348         Py_DECREF(t);
1349 }
1350
1351 static int python_export_sample(struct db_export *dbe,
1352                                 struct export_sample *es)
1353 {
1354         struct tables *tables = container_of(dbe, struct tables, dbe);
1355
1356         python_export_sample_table(dbe, es);
1357
1358         if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
1359                 python_export_synth(dbe, es);
1360
1361         return 0;
1362 }
1363
1364 static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1365 {
1366         struct tables *tables = container_of(dbe, struct tables, dbe);
1367         PyObject *t;
1368         u64 parent_db_id, sym_db_id;
1369
1370         parent_db_id = cp->parent ? cp->parent->db_id : 0;
1371         sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1372
1373         t = tuple_new(4);
1374
1375         tuple_set_d64(t, 0, cp->db_id);
1376         tuple_set_d64(t, 1, parent_db_id);
1377         tuple_set_d64(t, 2, sym_db_id);
1378         tuple_set_d64(t, 3, cp->ip);
1379
1380         call_object(tables->call_path_handler, t, "call_path_table");
1381
1382         Py_DECREF(t);
1383
1384         return 0;
1385 }
1386
1387 static int python_export_call_return(struct db_export *dbe,
1388                                      struct call_return *cr)
1389 {
1390         struct tables *tables = container_of(dbe, struct tables, dbe);
1391         u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1392         PyObject *t;
1393
1394         t = tuple_new(14);
1395
1396         tuple_set_d64(t, 0, cr->db_id);
1397         tuple_set_d64(t, 1, thread__db_id(cr->thread));
1398         tuple_set_d64(t, 2, comm_db_id);
1399         tuple_set_d64(t, 3, cr->cp->db_id);
1400         tuple_set_d64(t, 4, cr->call_time);
1401         tuple_set_d64(t, 5, cr->return_time);
1402         tuple_set_d64(t, 6, cr->branch_count);
1403         tuple_set_d64(t, 7, cr->call_ref);
1404         tuple_set_d64(t, 8, cr->return_ref);
1405         tuple_set_d64(t, 9, cr->cp->parent->db_id);
1406         tuple_set_s32(t, 10, cr->flags);
1407         tuple_set_d64(t, 11, cr->parent_db_id);
1408         tuple_set_d64(t, 12, cr->insn_count);
1409         tuple_set_d64(t, 13, cr->cyc_count);
1410
1411         call_object(tables->call_return_handler, t, "call_return_table");
1412
1413         Py_DECREF(t);
1414
1415         return 0;
1416 }
1417
1418 static int python_export_context_switch(struct db_export *dbe, u64 db_id,
1419                                         struct machine *machine,
1420                                         struct perf_sample *sample,
1421                                         u64 th_out_id, u64 comm_out_id,
1422                                         u64 th_in_id, u64 comm_in_id, int flags)
1423 {
1424         struct tables *tables = container_of(dbe, struct tables, dbe);
1425         PyObject *t;
1426
1427         t = tuple_new(9);
1428
1429         tuple_set_d64(t, 0, db_id);
1430         tuple_set_d64(t, 1, machine->db_id);
1431         tuple_set_d64(t, 2, sample->time);
1432         tuple_set_s32(t, 3, sample->cpu);
1433         tuple_set_d64(t, 4, th_out_id);
1434         tuple_set_d64(t, 5, comm_out_id);
1435         tuple_set_d64(t, 6, th_in_id);
1436         tuple_set_d64(t, 7, comm_in_id);
1437         tuple_set_s32(t, 8, flags);
1438
1439         call_object(tables->context_switch_handler, t, "context_switch");
1440
1441         Py_DECREF(t);
1442
1443         return 0;
1444 }
1445
1446 static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1447                                       void *data)
1448 {
1449         struct db_export *dbe = data;
1450
1451         return db_export__call_return(dbe, cr, parent_db_id);
1452 }
1453
1454 static void python_process_general_event(struct perf_sample *sample,
1455                                          struct evsel *evsel,
1456                                          struct addr_location *al,
1457                                          struct addr_location *addr_al)
1458 {
1459         PyObject *handler, *t, *dict, *callchain;
1460         static char handler_name[64];
1461         unsigned n = 0;
1462
1463         snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1464
1465         handler = get_handler(handler_name);
1466         if (!handler)
1467                 return;
1468
1469         /*
1470          * Use the MAX_FIELDS to make the function expandable, though
1471          * currently there is only one item for the tuple.
1472          */
1473         t = PyTuple_New(MAX_FIELDS);
1474         if (!t)
1475                 Py_FatalError("couldn't create Python tuple");
1476
1477         /* ip unwinding */
1478         callchain = python_process_callchain(sample, evsel, al);
1479         dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain);
1480
1481         PyTuple_SetItem(t, n++, dict);
1482         if (_PyTuple_Resize(&t, n) == -1)
1483                 Py_FatalError("error resizing Python tuple");
1484
1485         call_object(handler, t, handler_name);
1486
1487         Py_DECREF(t);
1488 }
1489
1490 static void python_process_event(union perf_event *event,
1491                                  struct perf_sample *sample,
1492                                  struct evsel *evsel,
1493                                  struct addr_location *al,
1494                                  struct addr_location *addr_al)
1495 {
1496         struct tables *tables = &tables_global;
1497
1498         scripting_context__update(scripting_context, event, sample, evsel, al, addr_al);
1499
1500         switch (evsel->core.attr.type) {
1501         case PERF_TYPE_TRACEPOINT:
1502                 python_process_tracepoint(sample, evsel, al, addr_al);
1503                 break;
1504         /* Reserve for future process_hw/sw/raw APIs */
1505         default:
1506                 if (tables->db_export_mode)
1507                         db_export__sample(&tables->dbe, event, sample, evsel, al, addr_al);
1508                 else
1509                         python_process_general_event(sample, evsel, al, addr_al);
1510         }
1511 }
1512
1513 static void python_process_throttle(union perf_event *event,
1514                                     struct perf_sample *sample,
1515                                     struct machine *machine)
1516 {
1517         const char *handler_name;
1518         PyObject *handler, *t;
1519
1520         if (event->header.type == PERF_RECORD_THROTTLE)
1521                 handler_name = "throttle";
1522         else
1523                 handler_name = "unthrottle";
1524         handler = get_handler(handler_name);
1525         if (!handler)
1526                 return;
1527
1528         t = tuple_new(6);
1529         if (!t)
1530                 return;
1531
1532         tuple_set_u64(t, 0, event->throttle.time);
1533         tuple_set_u64(t, 1, event->throttle.id);
1534         tuple_set_u64(t, 2, event->throttle.stream_id);
1535         tuple_set_s32(t, 3, sample->cpu);
1536         tuple_set_s32(t, 4, sample->pid);
1537         tuple_set_s32(t, 5, sample->tid);
1538
1539         call_object(handler, t, handler_name);
1540
1541         Py_DECREF(t);
1542 }
1543
1544 static void python_do_process_switch(union perf_event *event,
1545                                      struct perf_sample *sample,
1546                                      struct machine *machine)
1547 {
1548         const char *handler_name = "context_switch";
1549         bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1550         bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT);
1551         pid_t np_pid = -1, np_tid = -1;
1552         PyObject *handler, *t;
1553
1554         handler = get_handler(handler_name);
1555         if (!handler)
1556                 return;
1557
1558         if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
1559                 np_pid = event->context_switch.next_prev_pid;
1560                 np_tid = event->context_switch.next_prev_tid;
1561         }
1562
1563         t = tuple_new(11);
1564         if (!t)
1565                 return;
1566
1567         tuple_set_u64(t, 0, sample->time);
1568         tuple_set_s32(t, 1, sample->cpu);
1569         tuple_set_s32(t, 2, sample->pid);
1570         tuple_set_s32(t, 3, sample->tid);
1571         tuple_set_s32(t, 4, np_pid);
1572         tuple_set_s32(t, 5, np_tid);
1573         tuple_set_s32(t, 6, machine->pid);
1574         tuple_set_bool(t, 7, out);
1575         tuple_set_bool(t, 8, out_preempt);
1576         tuple_set_s32(t, 9, sample->machine_pid);
1577         tuple_set_s32(t, 10, sample->vcpu);
1578
1579         call_object(handler, t, handler_name);
1580
1581         Py_DECREF(t);
1582 }
1583
1584 static void python_process_switch(union perf_event *event,
1585                                   struct perf_sample *sample,
1586                                   struct machine *machine)
1587 {
1588         struct tables *tables = &tables_global;
1589
1590         if (tables->db_export_mode)
1591                 db_export__switch(&tables->dbe, event, sample, machine);
1592         else
1593                 python_do_process_switch(event, sample, machine);
1594 }
1595
1596 static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
1597                                           union perf_event *event)
1598 {
1599         struct perf_record_auxtrace_error *e = &event->auxtrace_error;
1600         u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1601         const char *handler_name = "auxtrace_error";
1602         unsigned long long tm = e->time;
1603         const char *msg = e->msg;
1604         PyObject *handler, *t;
1605
1606         handler = get_handler(handler_name);
1607         if (!handler)
1608                 return;
1609
1610         if (!e->fmt) {
1611                 tm = 0;
1612                 msg = (const char *)&e->time;
1613         }
1614
1615         t = tuple_new(11);
1616
1617         tuple_set_u32(t, 0, e->type);
1618         tuple_set_u32(t, 1, e->code);
1619         tuple_set_s32(t, 2, e->cpu);
1620         tuple_set_s32(t, 3, e->pid);
1621         tuple_set_s32(t, 4, e->tid);
1622         tuple_set_u64(t, 5, e->ip);
1623         tuple_set_u64(t, 6, tm);
1624         tuple_set_string(t, 7, msg);
1625         tuple_set_u32(t, 8, cpumode);
1626         tuple_set_s32(t, 9, e->machine_pid);
1627         tuple_set_s32(t, 10, e->vcpu);
1628
1629         call_object(handler, t, handler_name);
1630
1631         Py_DECREF(t);
1632 }
1633
1634 static void get_handler_name(char *str, size_t size,
1635                              struct evsel *evsel)
1636 {
1637         char *p = str;
1638
1639         scnprintf(str, size, "stat__%s", evsel__name(evsel));
1640
1641         while ((p = strchr(p, ':'))) {
1642                 *p = '_';
1643                 p++;
1644         }
1645 }
1646
1647 static void
1648 process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp,
1649              struct perf_counts_values *count)
1650 {
1651         PyObject *handler, *t;
1652         static char handler_name[256];
1653         int n = 0;
1654
1655         t = PyTuple_New(MAX_FIELDS);
1656         if (!t)
1657                 Py_FatalError("couldn't create Python tuple");
1658
1659         get_handler_name(handler_name, sizeof(handler_name),
1660                          counter);
1661
1662         handler = get_handler(handler_name);
1663         if (!handler) {
1664                 pr_debug("can't find python handler %s\n", handler_name);
1665                 return;
1666         }
1667
1668         PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu));
1669         PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1670
1671         tuple_set_u64(t, n++, tstamp);
1672         tuple_set_u64(t, n++, count->val);
1673         tuple_set_u64(t, n++, count->ena);
1674         tuple_set_u64(t, n++, count->run);
1675
1676         if (_PyTuple_Resize(&t, n) == -1)
1677                 Py_FatalError("error resizing Python tuple");
1678
1679         call_object(handler, t, handler_name);
1680
1681         Py_DECREF(t);
1682 }
1683
1684 static void python_process_stat(struct perf_stat_config *config,
1685                                 struct evsel *counter, u64 tstamp)
1686 {
1687         struct perf_thread_map *threads = counter->core.threads;
1688         struct perf_cpu_map *cpus = counter->core.cpus;
1689         int cpu, thread;
1690
1691         for (thread = 0; thread < perf_thread_map__nr(threads); thread++) {
1692                 for (cpu = 0; cpu < perf_cpu_map__nr(cpus); cpu++) {
1693                         process_stat(counter, perf_cpu_map__cpu(cpus, cpu),
1694                                      perf_thread_map__pid(threads, thread), tstamp,
1695                                      perf_counts(counter->counts, cpu, thread));
1696                 }
1697         }
1698 }
1699
1700 static void python_process_stat_interval(u64 tstamp)
1701 {
1702         PyObject *handler, *t;
1703         static const char handler_name[] = "stat__interval";
1704         int n = 0;
1705
1706         t = PyTuple_New(MAX_FIELDS);
1707         if (!t)
1708                 Py_FatalError("couldn't create Python tuple");
1709
1710         handler = get_handler(handler_name);
1711         if (!handler) {
1712                 pr_debug("can't find python handler %s\n", handler_name);
1713                 return;
1714         }
1715
1716         tuple_set_u64(t, n++, tstamp);
1717
1718         if (_PyTuple_Resize(&t, n) == -1)
1719                 Py_FatalError("error resizing Python tuple");
1720
1721         call_object(handler, t, handler_name);
1722
1723         Py_DECREF(t);
1724 }
1725
1726 static int perf_script_context_init(void)
1727 {
1728         PyObject *perf_script_context;
1729         PyObject *perf_trace_context;
1730         PyObject *dict;
1731         int ret;
1732
1733         perf_trace_context = PyImport_AddModule("perf_trace_context");
1734         if (!perf_trace_context)
1735                 return -1;
1736         dict = PyModule_GetDict(perf_trace_context);
1737         if (!dict)
1738                 return -1;
1739
1740         perf_script_context = _PyCapsule_New(scripting_context, NULL, NULL);
1741         if (!perf_script_context)
1742                 return -1;
1743
1744         ret = PyDict_SetItemString(dict, "perf_script_context", perf_script_context);
1745         if (!ret)
1746                 ret = PyDict_SetItemString(main_dict, "perf_script_context", perf_script_context);
1747         Py_DECREF(perf_script_context);
1748         return ret;
1749 }
1750
1751 static int run_start_sub(void)
1752 {
1753         main_module = PyImport_AddModule("__main__");
1754         if (main_module == NULL)
1755                 return -1;
1756         Py_INCREF(main_module);
1757
1758         main_dict = PyModule_GetDict(main_module);
1759         if (main_dict == NULL)
1760                 goto error;
1761         Py_INCREF(main_dict);
1762
1763         if (perf_script_context_init())
1764                 goto error;
1765
1766         try_call_object("trace_begin", NULL);
1767
1768         return 0;
1769
1770 error:
1771         Py_XDECREF(main_dict);
1772         Py_XDECREF(main_module);
1773         return -1;
1774 }
1775
1776 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do {         \
1777         tables->handler_name = get_handler(#table_name);                \
1778         if (tables->handler_name)                                       \
1779                 tables->dbe.export_ ## name = python_export_ ## name;   \
1780 } while (0)
1781
1782 #define SET_TABLE_HANDLER(name) \
1783         SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1784
1785 static void set_table_handlers(struct tables *tables)
1786 {
1787         const char *perf_db_export_mode = "perf_db_export_mode";
1788         const char *perf_db_export_calls = "perf_db_export_calls";
1789         const char *perf_db_export_callchains = "perf_db_export_callchains";
1790         PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1791         bool export_calls = false;
1792         bool export_callchains = false;
1793         int ret;
1794
1795         memset(tables, 0, sizeof(struct tables));
1796         if (db_export__init(&tables->dbe))
1797                 Py_FatalError("failed to initialize export");
1798
1799         db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1800         if (!db_export_mode)
1801                 return;
1802
1803         ret = PyObject_IsTrue(db_export_mode);
1804         if (ret == -1)
1805                 handler_call_die(perf_db_export_mode);
1806         if (!ret)
1807                 return;
1808
1809         /* handle export calls */
1810         tables->dbe.crp = NULL;
1811         db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1812         if (db_export_calls) {
1813                 ret = PyObject_IsTrue(db_export_calls);
1814                 if (ret == -1)
1815                         handler_call_die(perf_db_export_calls);
1816                 export_calls = !!ret;
1817         }
1818
1819         if (export_calls) {
1820                 tables->dbe.crp =
1821                         call_return_processor__new(python_process_call_return,
1822                                                    &tables->dbe);
1823                 if (!tables->dbe.crp)
1824                         Py_FatalError("failed to create calls processor");
1825         }
1826
1827         /* handle export callchains */
1828         tables->dbe.cpr = NULL;
1829         db_export_callchains = PyDict_GetItemString(main_dict,
1830                                                     perf_db_export_callchains);
1831         if (db_export_callchains) {
1832                 ret = PyObject_IsTrue(db_export_callchains);
1833                 if (ret == -1)
1834                         handler_call_die(perf_db_export_callchains);
1835                 export_callchains = !!ret;
1836         }
1837
1838         if (export_callchains) {
1839                 /*
1840                  * Attempt to use the call path root from the call return
1841                  * processor, if the call return processor is in use. Otherwise,
1842                  * we allocate a new call path root. This prevents exporting
1843                  * duplicate call path ids when both are in use simultaneously.
1844                  */
1845                 if (tables->dbe.crp)
1846                         tables->dbe.cpr = tables->dbe.crp->cpr;
1847                 else
1848                         tables->dbe.cpr = call_path_root__new();
1849
1850                 if (!tables->dbe.cpr)
1851                         Py_FatalError("failed to create call path root");
1852         }
1853
1854         tables->db_export_mode = true;
1855         /*
1856          * Reserve per symbol space for symbol->db_id via symbol__priv()
1857          */
1858         symbol_conf.priv_size = sizeof(u64);
1859
1860         SET_TABLE_HANDLER(evsel);
1861         SET_TABLE_HANDLER(machine);
1862         SET_TABLE_HANDLER(thread);
1863         SET_TABLE_HANDLER(comm);
1864         SET_TABLE_HANDLER(comm_thread);
1865         SET_TABLE_HANDLER(dso);
1866         SET_TABLE_HANDLER(symbol);
1867         SET_TABLE_HANDLER(branch_type);
1868         SET_TABLE_HANDLER(sample);
1869         SET_TABLE_HANDLER(call_path);
1870         SET_TABLE_HANDLER(call_return);
1871         SET_TABLE_HANDLER(context_switch);
1872
1873         /*
1874          * Synthesized events are samples but with architecture-specific data
1875          * stored in sample->raw_data. They are exported via
1876          * python_export_sample() and consequently do not need a separate export
1877          * callback.
1878          */
1879         tables->synth_handler = get_handler("synth_data");
1880 }
1881
1882 #if PY_MAJOR_VERSION < 3
1883 static void _free_command_line(const char **command_line, int num)
1884 {
1885         free(command_line);
1886 }
1887 #else
1888 static void _free_command_line(wchar_t **command_line, int num)
1889 {
1890         int i;
1891         for (i = 0; i < num; i++)
1892                 PyMem_RawFree(command_line[i]);
1893         free(command_line);
1894 }
1895 #endif
1896
1897
1898 /*
1899  * Start trace script
1900  */
1901 static int python_start_script(const char *script, int argc, const char **argv,
1902                                struct perf_session *session)
1903 {
1904         struct tables *tables = &tables_global;
1905 #if PY_MAJOR_VERSION < 3
1906         const char **command_line;
1907 #else
1908         wchar_t **command_line;
1909 #endif
1910         /*
1911          * Use a non-const name variable to cope with python 2.6's
1912          * PyImport_AppendInittab prototype
1913          */
1914         char buf[PATH_MAX], name[19] = "perf_trace_context";
1915         int i, err = 0;
1916         FILE *fp;
1917
1918         scripting_context->session = session;
1919 #if PY_MAJOR_VERSION < 3
1920         command_line = malloc((argc + 1) * sizeof(const char *));
1921         command_line[0] = script;
1922         for (i = 1; i < argc + 1; i++)
1923                 command_line[i] = argv[i - 1];
1924         PyImport_AppendInittab(name, initperf_trace_context);
1925 #else
1926         command_line = malloc((argc + 1) * sizeof(wchar_t *));
1927         command_line[0] = Py_DecodeLocale(script, NULL);
1928         for (i = 1; i < argc + 1; i++)
1929                 command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1930         PyImport_AppendInittab(name, PyInit_perf_trace_context);
1931 #endif
1932         Py_Initialize();
1933
1934 #if PY_MAJOR_VERSION < 3
1935         PySys_SetArgv(argc + 1, (char **)command_line);
1936 #else
1937         PySys_SetArgv(argc + 1, command_line);
1938 #endif
1939
1940         fp = fopen(script, "r");
1941         if (!fp) {
1942                 sprintf(buf, "Can't open python script \"%s\"", script);
1943                 perror(buf);
1944                 err = -1;
1945                 goto error;
1946         }
1947
1948         err = PyRun_SimpleFile(fp, script);
1949         if (err) {
1950                 fprintf(stderr, "Error running python script %s\n", script);
1951                 goto error;
1952         }
1953
1954         err = run_start_sub();
1955         if (err) {
1956                 fprintf(stderr, "Error starting python script %s\n", script);
1957                 goto error;
1958         }
1959
1960         set_table_handlers(tables);
1961
1962         if (tables->db_export_mode) {
1963                 err = db_export__branch_types(&tables->dbe);
1964                 if (err)
1965                         goto error;
1966         }
1967
1968         _free_command_line(command_line, argc + 1);
1969
1970         return err;
1971 error:
1972         Py_Finalize();
1973         _free_command_line(command_line, argc + 1);
1974
1975         return err;
1976 }
1977
1978 static int python_flush_script(void)
1979 {
1980         return 0;
1981 }
1982
1983 /*
1984  * Stop trace script
1985  */
1986 static int python_stop_script(void)
1987 {
1988         struct tables *tables = &tables_global;
1989
1990         try_call_object("trace_end", NULL);
1991
1992         db_export__exit(&tables->dbe);
1993
1994         Py_XDECREF(main_dict);
1995         Py_XDECREF(main_module);
1996         Py_Finalize();
1997
1998         return 0;
1999 }
2000
2001 #ifdef HAVE_LIBTRACEEVENT
2002 static int python_generate_script(struct tep_handle *pevent, const char *outfile)
2003 {
2004         int i, not_first, count, nr_events;
2005         struct tep_event **all_events;
2006         struct tep_event *event = NULL;
2007         struct tep_format_field *f;
2008         char fname[PATH_MAX];
2009         FILE *ofp;
2010
2011         sprintf(fname, "%s.py", outfile);
2012         ofp = fopen(fname, "w");
2013         if (ofp == NULL) {
2014                 fprintf(stderr, "couldn't open %s\n", fname);
2015                 return -1;
2016         }
2017         fprintf(ofp, "# perf script event handlers, "
2018                 "generated by perf script -g python\n");
2019
2020         fprintf(ofp, "# Licensed under the terms of the GNU GPL"
2021                 " License version 2\n\n");
2022
2023         fprintf(ofp, "# The common_* event handler fields are the most useful "
2024                 "fields common to\n");
2025
2026         fprintf(ofp, "# all events.  They don't necessarily correspond to "
2027                 "the 'common_*' fields\n");
2028
2029         fprintf(ofp, "# in the format files.  Those fields not available as "
2030                 "handler params can\n");
2031
2032         fprintf(ofp, "# be retrieved using Python functions of the form "
2033                 "common_*(context).\n");
2034
2035         fprintf(ofp, "# See the perf-script-python Documentation for the list "
2036                 "of available functions.\n\n");
2037
2038         fprintf(ofp, "from __future__ import print_function\n\n");
2039         fprintf(ofp, "import os\n");
2040         fprintf(ofp, "import sys\n\n");
2041
2042         fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
2043         fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
2044         fprintf(ofp, "\nfrom perf_trace_context import *\n");
2045         fprintf(ofp, "from Core import *\n\n\n");
2046
2047         fprintf(ofp, "def trace_begin():\n");
2048         fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
2049
2050         fprintf(ofp, "def trace_end():\n");
2051         fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
2052
2053         nr_events = tep_get_events_count(pevent);
2054         all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
2055
2056         for (i = 0; all_events && i < nr_events; i++) {
2057                 event = all_events[i];
2058                 fprintf(ofp, "def %s__%s(", event->system, event->name);
2059                 fprintf(ofp, "event_name, ");
2060                 fprintf(ofp, "context, ");
2061                 fprintf(ofp, "common_cpu,\n");
2062                 fprintf(ofp, "\tcommon_secs, ");
2063                 fprintf(ofp, "common_nsecs, ");
2064                 fprintf(ofp, "common_pid, ");
2065                 fprintf(ofp, "common_comm,\n\t");
2066                 fprintf(ofp, "common_callchain, ");
2067
2068                 not_first = 0;
2069                 count = 0;
2070
2071                 for (f = event->format.fields; f; f = f->next) {
2072                         if (not_first++)
2073                                 fprintf(ofp, ", ");
2074                         if (++count % 5 == 0)
2075                                 fprintf(ofp, "\n\t");
2076
2077                         fprintf(ofp, "%s", f->name);
2078                 }
2079                 if (not_first++)
2080                         fprintf(ofp, ", ");
2081                 if (++count % 5 == 0)
2082                         fprintf(ofp, "\n\t\t");
2083                 fprintf(ofp, "perf_sample_dict");
2084
2085                 fprintf(ofp, "):\n");
2086
2087                 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
2088                         "common_secs, common_nsecs,\n\t\t\t"
2089                         "common_pid, common_comm)\n\n");
2090
2091                 fprintf(ofp, "\t\tprint(\"");
2092
2093                 not_first = 0;
2094                 count = 0;
2095
2096                 for (f = event->format.fields; f; f = f->next) {
2097                         if (not_first++)
2098                                 fprintf(ofp, ", ");
2099                         if (count && count % 3 == 0) {
2100                                 fprintf(ofp, "\" \\\n\t\t\"");
2101                         }
2102                         count++;
2103
2104                         fprintf(ofp, "%s=", f->name);
2105                         if (f->flags & TEP_FIELD_IS_STRING ||
2106                             f->flags & TEP_FIELD_IS_FLAG ||
2107                             f->flags & TEP_FIELD_IS_ARRAY ||
2108                             f->flags & TEP_FIELD_IS_SYMBOLIC)
2109                                 fprintf(ofp, "%%s");
2110                         else if (f->flags & TEP_FIELD_IS_SIGNED)
2111                                 fprintf(ofp, "%%d");
2112                         else
2113                                 fprintf(ofp, "%%u");
2114                 }
2115
2116                 fprintf(ofp, "\" %% \\\n\t\t(");
2117
2118                 not_first = 0;
2119                 count = 0;
2120
2121                 for (f = event->format.fields; f; f = f->next) {
2122                         if (not_first++)
2123                                 fprintf(ofp, ", ");
2124
2125                         if (++count % 5 == 0)
2126                                 fprintf(ofp, "\n\t\t");
2127
2128                         if (f->flags & TEP_FIELD_IS_FLAG) {
2129                                 if ((count - 1) % 5 != 0) {
2130                                         fprintf(ofp, "\n\t\t");
2131                                         count = 4;
2132                                 }
2133                                 fprintf(ofp, "flag_str(\"");
2134                                 fprintf(ofp, "%s__%s\", ", event->system,
2135                                         event->name);
2136                                 fprintf(ofp, "\"%s\", %s)", f->name,
2137                                         f->name);
2138                         } else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
2139                                 if ((count - 1) % 5 != 0) {
2140                                         fprintf(ofp, "\n\t\t");
2141                                         count = 4;
2142                                 }
2143                                 fprintf(ofp, "symbol_str(\"");
2144                                 fprintf(ofp, "%s__%s\", ", event->system,
2145                                         event->name);
2146                                 fprintf(ofp, "\"%s\", %s)", f->name,
2147                                         f->name);
2148                         } else
2149                                 fprintf(ofp, "%s", f->name);
2150                 }
2151
2152                 fprintf(ofp, "))\n\n");
2153
2154                 fprintf(ofp, "\t\tprint('Sample: {'+"
2155                         "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2156
2157                 fprintf(ofp, "\t\tfor node in common_callchain:");
2158                 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
2159                 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x] %%s%%s%%s%%s\" %% (");
2160                 fprintf(ofp, "\n\t\t\t\t\tnode['ip'], node['sym']['name'],");
2161                 fprintf(ofp, "\n\t\t\t\t\t\"+0x{:x}\".format(node['sym_off']) if 'sym_off' in node else \"\",");
2162                 fprintf(ofp, "\n\t\t\t\t\t\" ({})\".format(node['dso'])  if 'dso' in node else \"\",");
2163                 fprintf(ofp, "\n\t\t\t\t\t\" \" + node['sym_srcline'] if 'sym_srcline' in node else \"\"))");
2164                 fprintf(ofp, "\n\t\t\telse:");
2165                 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
2166                 fprintf(ofp, "\t\tprint()\n\n");
2167
2168         }
2169
2170         fprintf(ofp, "def trace_unhandled(event_name, context, "
2171                 "event_fields_dict, perf_sample_dict):\n");
2172
2173         fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
2174         fprintf(ofp, "\t\tprint('Sample: {'+"
2175                 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2176
2177         fprintf(ofp, "def print_header("
2178                 "event_name, cpu, secs, nsecs, pid, comm):\n"
2179                 "\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
2180                 "(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
2181
2182         fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
2183                 "\treturn delimiter.join"
2184                 "(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
2185
2186         fclose(ofp);
2187
2188         fprintf(stderr, "generated Python script: %s\n", fname);
2189
2190         return 0;
2191 }
2192 #else
2193 static int python_generate_script(struct tep_handle *pevent __maybe_unused,
2194                                   const char *outfile __maybe_unused)
2195 {
2196         fprintf(stderr, "Generating Python perf-script is not supported."
2197                 "  Install libtraceevent and rebuild perf to enable it.\n"
2198                 "For example:\n  # apt install libtraceevent-dev (ubuntu)"
2199                 "\n  # yum install libtraceevent-devel (Fedora)"
2200                 "\n  etc.\n");
2201         return -1;
2202 }
2203 #endif
2204
2205 struct scripting_ops python_scripting_ops = {
2206         .name                   = "Python",
2207         .dirname                = "python",
2208         .start_script           = python_start_script,
2209         .flush_script           = python_flush_script,
2210         .stop_script            = python_stop_script,
2211         .process_event          = python_process_event,
2212         .process_switch         = python_process_switch,
2213         .process_auxtrace_error = python_process_auxtrace_error,
2214         .process_stat           = python_process_stat,
2215         .process_stat_interval  = python_process_stat_interval,
2216         .process_throttle       = python_process_throttle,
2217         .generate_script        = python_generate_script,
2218 };