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