# 'Branch Count' is the total number of branches for that function and all
# functions that it calls
+# There is also a "All branches" report, which displays branches and
+# possibly disassembly. However, presently, the only supported disassembler is
+# Intel XED, and additionally the object code must be present in perf build ID
+# cache. To use Intel XED, libxed.so must be present. To build and install
+# libxed.so:
+# git clone https://github.com/intelxed/mbuild.git mbuild
+# git clone https://github.com/intelxed/xed
+# cd xed
+# ./mfile.py --share
+# sudo ./mfile.py --prefix=/usr/local install
+# sudo ldconfig
+#
+# Example report:
+#
+# Time CPU Command PID TID Branch Type In Tx Branch
+# 8107675239590 2 ls 22011 22011 return from interrupt No ffffffff86a00a67 native_irq_return_iret ([kernel]) -> 7fab593ea260 _start (ld-2.19.so)
+# 7fab593ea260 48 89 e7 mov %rsp, %rdi
+# 8107675239899 2 ls 22011 22011 hardware interrupt No 7fab593ea260 _start (ld-2.19.so) -> ffffffff86a012e0 page_fault ([kernel])
+# 8107675241900 2 ls 22011 22011 return from interrupt No ffffffff86a00a67 native_irq_return_iret ([kernel]) -> 7fab593ea260 _start (ld-2.19.so)
+# 7fab593ea260 48 89 e7 mov %rsp, %rdi
+# 7fab593ea263 e8 c8 06 00 00 callq 0x7fab593ea930
+# 8107675241900 2 ls 22011 22011 call No 7fab593ea263 _start+0x3 (ld-2.19.so) -> 7fab593ea930 _dl_start (ld-2.19.so)
+# 7fab593ea930 55 pushq %rbp
+# 7fab593ea931 48 89 e5 mov %rsp, %rbp
+# 7fab593ea934 41 57 pushq %r15
+# 7fab593ea936 41 56 pushq %r14
+# 7fab593ea938 41 55 pushq %r13
+# 7fab593ea93a 41 54 pushq %r12
+# 7fab593ea93c 53 pushq %rbx
+# 7fab593ea93d 48 89 fb mov %rdi, %rbx
+# 7fab593ea940 48 83 ec 68 sub $0x68, %rsp
+# 7fab593ea944 0f 31 rdtsc
+# 7fab593ea946 48 c1 e2 20 shl $0x20, %rdx
+# 7fab593ea94a 89 c0 mov %eax, %eax
+# 7fab593ea94c 48 09 c2 or %rax, %rdx
+# 7fab593ea94f 48 8b 05 1a 15 22 00 movq 0x22151a(%rip), %rax
+# 8107675242232 2 ls 22011 22011 hardware interrupt No 7fab593ea94f _dl_start+0x1f (ld-2.19.so) -> ffffffff86a012e0 page_fault ([kernel])
+# 8107675242900 2 ls 22011 22011 return from interrupt No ffffffff86a00a67 native_irq_return_iret ([kernel]) -> 7fab593ea94f _dl_start+0x1f (ld-2.19.so)
+# 7fab593ea94f 48 8b 05 1a 15 22 00 movq 0x22151a(%rip), %rax
+# 7fab593ea956 48 89 15 3b 13 22 00 movq %rdx, 0x22133b(%rip)
+# 8107675243232 2 ls 22011 22011 hardware interrupt No 7fab593ea956 _dl_start+0x26 (ld-2.19.so) -> ffffffff86a012e0 page_fault ([kernel])
+
import sys
import weakref
import threading
import string
+import cPickle
+import re
+import os
from PySide.QtCore import *
from PySide.QtGui import *
from PySide.QtSql import *
from decimal import *
+from ctypes import *
+from multiprocessing import Process, Array, Value, Event
# Data formatting helpers
+def tohex(ip):
+ if ip < 0:
+ ip += 1 << 64
+ return "%x" % ip
+
+def offstr(offset):
+ if offset:
+ return "+0x%x" % offset
+ return ""
+
def dsoname(name):
if name == "[kernel.kallsyms]":
return "[kernel]"
def DisplayData(self, item, index):
return item.getData(index.column())
+ def FetchIfNeeded(self, row):
+ if row > self.last_row_read:
+ self.last_row_read = row
+ if row + 10 >= self.root.child_count:
+ self.fetcher.Fetch(glb_chunk_sz)
+
+ def columnAlignment(self, column):
+ return Qt.AlignLeft
+
+ def columnFont(self, column):
+ return None
+
+ def data(self, index, role):
+ if role == Qt.TextAlignmentRole:
+ return self.columnAlignment(index.column())
+ if role == Qt.FontRole:
+ return self.columnFont(index.column())
+ if role != Qt.DisplayRole:
+ return None
+ item = index.internalPointer()
+ return self.DisplayData(item, index)
+
+# Table data model
+
+class TableModel(QAbstractTableModel):
+
+ def __init__(self, parent=None):
+ super(TableModel, self).__init__(parent)
+ self.child_count = 0
+ self.child_items = []
+ self.last_row_read = 0
+
+ def Item(self, parent):
+ if parent.isValid():
+ return parent.internalPointer()
+ else:
+ return self
+
+ def rowCount(self, parent):
+ return self.child_count
+
+ def headerData(self, section, orientation, role):
+ if role == Qt.TextAlignmentRole:
+ return self.columnAlignment(section)
+ if role != Qt.DisplayRole:
+ return None
+ if orientation != Qt.Horizontal:
+ return None
+ return self.columnHeader(section)
+
+ def index(self, row, column, parent):
+ return self.createIndex(row, column, self.child_items[row])
+
+ def DisplayData(self, item, index):
+ return item.getData(index.column())
+
+ def FetchIfNeeded(self, row):
+ if row > self.last_row_read:
+ self.last_row_read = row
+ if row + 10 >= self.child_count:
+ self.fetcher.Fetch(glb_chunk_sz)
+
def columnAlignment(self, column):
return Qt.AlignLeft
if not found:
self.find_bar.NotFound()
+# Child data item finder
+
+class ChildDataItemFinder():
+
+ def __init__(self, root):
+ self.root = root
+ self.value, self.direction, self.pattern, self.last_value, self.last_pattern = (None,) * 5
+ self.rows = []
+ self.pos = 0
+
+ def FindSelect(self):
+ self.rows = []
+ if self.pattern:
+ pattern = re.compile(self.value)
+ for child in self.root.child_items:
+ for column_data in child.data:
+ if re.search(pattern, str(column_data)) is not None:
+ self.rows.append(child.row)
+ break
+ else:
+ for child in self.root.child_items:
+ for column_data in child.data:
+ if self.value in str(column_data):
+ self.rows.append(child.row)
+ break
+
+ def FindValue(self):
+ self.pos = 0
+ if self.last_value != self.value or self.pattern != self.last_pattern:
+ self.FindSelect()
+ if not len(self.rows):
+ return -1
+ return self.rows[self.pos]
+
+ def FindThread(self):
+ if self.direction == 0 or self.value != self.last_value or self.pattern != self.last_pattern:
+ row = self.FindValue()
+ elif len(self.rows):
+ if self.direction > 0:
+ self.pos += 1
+ if self.pos >= len(self.rows):
+ self.pos = 0
+ else:
+ self.pos -= 1
+ if self.pos < 0:
+ self.pos = len(self.rows) - 1
+ row = self.rows[self.pos]
+ else:
+ row = -1
+ return (True, row)
+
+ def Find(self, value, direction, pattern, context, callback):
+ self.value, self.direction, self.pattern, self.last_value, self.last_pattern = (value, direction,pattern, self.value, self.pattern)
+ # Use a thread so the UI is not blocked
+ thread = Thread(self.FindThread)
+ thread.done.connect(lambda row, t=thread, c=callback: self.FindDone(t, c, row), Qt.QueuedConnection)
+ thread.start()
+
+ def FindDone(self, thread, callback, row):
+ callback(row)
+
+# Number of database records to fetch in one go
+
+glb_chunk_sz = 10000
+
+# size of pickled integer big enough for record size
+
+glb_nsz = 8
+
+# Background process for SQL data fetcher
+
+class SQLFetcherProcess():
+
+ def __init__(self, dbref, sql, buffer, head, tail, fetch_count, fetching_done, process_target, wait_event, fetched_event, prep):
+ # Need a unique connection name
+ conn_name = "SQLFetcher" + str(os.getpid())
+ self.db, dbname = dbref.Open(conn_name)
+ self.sql = sql
+ self.buffer = buffer
+ self.head = head
+ self.tail = tail
+ self.fetch_count = fetch_count
+ self.fetching_done = fetching_done
+ self.process_target = process_target
+ self.wait_event = wait_event
+ self.fetched_event = fetched_event
+ self.prep = prep
+ self.query = QSqlQuery(self.db)
+ self.query_limit = 0 if "$$last_id$$" in sql else 2
+ self.last_id = -1
+ self.fetched = 0
+ self.more = True
+ self.local_head = self.head.value
+ self.local_tail = self.tail.value
+
+ def Select(self):
+ if self.query_limit:
+ if self.query_limit == 1:
+ return
+ self.query_limit -= 1
+ stmt = self.sql.replace("$$last_id$$", str(self.last_id))
+ QueryExec(self.query, stmt)
+
+ def Next(self):
+ if not self.query.next():
+ self.Select()
+ if not self.query.next():
+ return None
+ self.last_id = self.query.value(0)
+ return self.prep(self.query)
+
+ def WaitForTarget(self):
+ while True:
+ self.wait_event.clear()
+ target = self.process_target.value
+ if target > self.fetched or target < 0:
+ break
+ self.wait_event.wait()
+ return target
+
+ def HasSpace(self, sz):
+ if self.local_tail <= self.local_head:
+ space = len(self.buffer) - self.local_head
+ if space > sz:
+ return True
+ if space >= glb_nsz:
+ # Use 0 (or space < glb_nsz) to mean there is no more at the top of the buffer
+ nd = cPickle.dumps(0, cPickle.HIGHEST_PROTOCOL)
+ self.buffer[self.local_head : self.local_head + len(nd)] = nd
+ self.local_head = 0
+ if self.local_tail - self.local_head > sz:
+ return True
+ return False
+
+ def WaitForSpace(self, sz):
+ if self.HasSpace(sz):
+ return
+ while True:
+ self.wait_event.clear()
+ self.local_tail = self.tail.value
+ if self.HasSpace(sz):
+ return
+ self.wait_event.wait()
+
+ def AddToBuffer(self, obj):
+ d = cPickle.dumps(obj, cPickle.HIGHEST_PROTOCOL)
+ n = len(d)
+ nd = cPickle.dumps(n, cPickle.HIGHEST_PROTOCOL)
+ sz = n + glb_nsz
+ self.WaitForSpace(sz)
+ pos = self.local_head
+ self.buffer[pos : pos + len(nd)] = nd
+ self.buffer[pos + glb_nsz : pos + sz] = d
+ self.local_head += sz
+
+ def FetchBatch(self, batch_size):
+ fetched = 0
+ while batch_size > fetched:
+ obj = self.Next()
+ if obj is None:
+ self.more = False
+ break
+ self.AddToBuffer(obj)
+ fetched += 1
+ if fetched:
+ self.fetched += fetched
+ with self.fetch_count.get_lock():
+ self.fetch_count.value += fetched
+ self.head.value = self.local_head
+ self.fetched_event.set()
+
+ def Run(self):
+ while self.more:
+ target = self.WaitForTarget()
+ if target < 0:
+ break
+ batch_size = min(glb_chunk_sz, target - self.fetched)
+ self.FetchBatch(batch_size)
+ self.fetching_done.value = True
+ self.fetched_event.set()
+
+def SQLFetcherFn(*x):
+ process = SQLFetcherProcess(*x)
+ process.Run()
+
+# SQL data fetcher
+
+class SQLFetcher(QObject):
+
+ done = Signal(object)
+
+ def __init__(self, glb, sql, prep, process_data, parent=None):
+ super(SQLFetcher, self).__init__(parent)
+ self.process_data = process_data
+ self.more = True
+ self.target = 0
+ self.last_target = 0
+ self.fetched = 0
+ self.buffer_size = 16 * 1024 * 1024
+ self.buffer = Array(c_char, self.buffer_size, lock=False)
+ self.head = Value(c_longlong)
+ self.tail = Value(c_longlong)
+ self.local_tail = 0
+ self.fetch_count = Value(c_longlong)
+ self.fetching_done = Value(c_bool)
+ self.last_count = 0
+ self.process_target = Value(c_longlong)
+ self.wait_event = Event()
+ self.fetched_event = Event()
+ glb.AddInstanceToShutdownOnExit(self)
+ self.process = Process(target=SQLFetcherFn, args=(glb.dbref, sql, self.buffer, self.head, self.tail, self.fetch_count, self.fetching_done, self.process_target, self.wait_event, self.fetched_event, prep))
+ self.process.start()
+ self.thread = Thread(self.Thread)
+ self.thread.done.connect(self.ProcessData, Qt.QueuedConnection)
+ self.thread.start()
+
+ def Shutdown(self):
+ # Tell the thread and process to exit
+ self.process_target.value = -1
+ self.wait_event.set()
+ self.more = False
+ self.fetching_done.value = True
+ self.fetched_event.set()
+
+ def Thread(self):
+ if not self.more:
+ return True, 0
+ while True:
+ self.fetched_event.clear()
+ fetch_count = self.fetch_count.value
+ if fetch_count != self.last_count:
+ break
+ if self.fetching_done.value:
+ self.more = False
+ return True, 0
+ self.fetched_event.wait()
+ count = fetch_count - self.last_count
+ self.last_count = fetch_count
+ self.fetched += count
+ return False, count
+
+ def Fetch(self, nr):
+ if not self.more:
+ # -1 inidcates there are no more
+ return -1
+ result = self.fetched
+ extra = result + nr - self.target
+ if extra > 0:
+ self.target += extra
+ # process_target < 0 indicates shutting down
+ if self.process_target.value >= 0:
+ self.process_target.value = self.target
+ self.wait_event.set()
+ return result
+
+ def RemoveFromBuffer(self):
+ pos = self.local_tail
+ if len(self.buffer) - pos < glb_nsz:
+ pos = 0
+ n = cPickle.loads(self.buffer[pos : pos + glb_nsz])
+ if n == 0:
+ pos = 0
+ n = cPickle.loads(self.buffer[0 : glb_nsz])
+ pos += glb_nsz
+ obj = cPickle.loads(self.buffer[pos : pos + n])
+ self.local_tail = pos + n
+ return obj
+
+ def ProcessData(self, count):
+ for i in xrange(count):
+ obj = self.RemoveFromBuffer()
+ self.process_data(obj)
+ self.tail.value = self.local_tail
+ self.wait_event.set()
+ self.done.emit(count)
+
+# Fetch more records bar
+
+class FetchMoreRecordsBar():
+
+ def __init__(self, model, parent):
+ self.model = model
+
+ self.label = QLabel("Number of records (x " + "{:,}".format(glb_chunk_sz) + ") to fetch:")
+ self.label.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
+
+ self.fetch_count = QSpinBox()
+ self.fetch_count.setRange(1, 1000000)
+ self.fetch_count.setValue(10)
+ self.fetch_count.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
+
+ self.fetch = QPushButton("Go!")
+ self.fetch.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
+ self.fetch.released.connect(self.FetchMoreRecords)
+
+ self.progress = QProgressBar()
+ self.progress.setRange(0, 100)
+ self.progress.hide()
+
+ self.done_label = QLabel("All records fetched")
+ self.done_label.hide()
+
+ self.spacer = QLabel("")
+
+ self.close_button = QToolButton()
+ self.close_button.setIcon(parent.style().standardIcon(QStyle.SP_DockWidgetCloseButton))
+ self.close_button.released.connect(self.Deactivate)
+
+ self.hbox = QHBoxLayout()
+ self.hbox.setContentsMargins(0, 0, 0, 0)
+
+ self.hbox.addWidget(self.label)
+ self.hbox.addWidget(self.fetch_count)
+ self.hbox.addWidget(self.fetch)
+ self.hbox.addWidget(self.spacer)
+ self.hbox.addWidget(self.progress)
+ self.hbox.addWidget(self.done_label)
+ self.hbox.addWidget(self.close_button)
+
+ self.bar = QWidget()
+ self.bar.setLayout(self.hbox);
+ self.bar.show()
+
+ self.in_progress = False
+ self.model.progress.connect(self.Progress)
+
+ self.done = False
+
+ if not model.HasMoreRecords():
+ self.Done()
+
+ def Widget(self):
+ return self.bar
+
+ def Activate(self):
+ self.bar.show()
+ self.fetch.setFocus()
+
+ def Deactivate(self):
+ self.bar.hide()
+
+ def Enable(self, enable):
+ self.fetch.setEnabled(enable)
+ self.fetch_count.setEnabled(enable)
+
+ def Busy(self):
+ self.Enable(False)
+ self.fetch.hide()
+ self.spacer.hide()
+ self.progress.show()
+
+ def Idle(self):
+ self.in_progress = False
+ self.Enable(True)
+ self.progress.hide()
+ self.fetch.show()
+ self.spacer.show()
+
+ def Target(self):
+ return self.fetch_count.value() * glb_chunk_sz
+
+ def Done(self):
+ self.done = True
+ self.Idle()
+ self.label.hide()
+ self.fetch_count.hide()
+ self.fetch.hide()
+ self.spacer.hide()
+ self.done_label.show()
+
+ def Progress(self, count):
+ if self.in_progress:
+ if count:
+ percent = ((count - self.start) * 100) / self.Target()
+ if percent >= 100:
+ self.Idle()
+ else:
+ self.progress.setValue(percent)
+ if not count:
+ # Count value of zero means no more records
+ self.Done()
+
+ def FetchMoreRecords(self):
+ if self.done:
+ return
+ self.progress.setValue(0)
+ self.Busy()
+ self.in_progress = True
+ self.start = self.model.FetchMoreRecords(self.Target())
+
+# Brance data model level two item
+
+class BranchLevelTwoItem():
+
+ def __init__(self, row, text, parent_item):
+ self.row = row
+ self.parent_item = parent_item
+ self.data = [""] * 8
+ self.data[7] = text
+ self.level = 2
+
+ def getParentItem(self):
+ return self.parent_item
+
+ def getRow(self):
+ return self.row
+
+ def childCount(self):
+ return 0
+
+ def hasChildren(self):
+ return False
+
+ def getData(self, column):
+ return self.data[column]
+
+# Brance data model level one item
+
+class BranchLevelOneItem():
+
+ def __init__(self, glb, row, data, parent_item):
+ self.glb = glb
+ self.row = row
+ self.parent_item = parent_item
+ self.child_count = 0
+ self.child_items = []
+ self.data = data[1:]
+ self.dbid = data[0]
+ self.level = 1
+ self.query_done = False
+
+ def getChildItem(self, row):
+ return self.child_items[row]
+
+ def getParentItem(self):
+ return self.parent_item
+
+ def getRow(self):
+ return self.row
+
+ def Select(self):
+ self.query_done = True
+
+ if not self.glb.have_disassembler:
+ return
+
+ query = QSqlQuery(self.glb.db)
+
+ QueryExec(query, "SELECT cpu, to_dso_id, to_symbol_id, to_sym_offset, short_name, long_name, build_id, sym_start, to_ip"
+ " FROM samples"
+ " INNER JOIN dsos ON samples.to_dso_id = dsos.id"
+ " INNER JOIN symbols ON samples.to_symbol_id = symbols.id"
+ " WHERE samples.id = " + str(self.dbid))
+ if not query.next():
+ return
+ cpu = query.value(0)
+ dso = query.value(1)
+ sym = query.value(2)
+ if dso == 0 or sym == 0:
+ return
+ off = query.value(3)
+ short_name = query.value(4)
+ long_name = query.value(5)
+ build_id = query.value(6)
+ sym_start = query.value(7)
+ ip = query.value(8)
+
+ QueryExec(query, "SELECT samples.dso_id, symbol_id, sym_offset, sym_start"
+ " FROM samples"
+ " INNER JOIN symbols ON samples.symbol_id = symbols.id"
+ " WHERE samples.id > " + str(self.dbid) + " AND cpu = " + str(cpu) +
+ " ORDER BY samples.id"
+ " LIMIT 1")
+ if not query.next():
+ return
+ if query.value(0) != dso:
+ # Cannot disassemble from one dso to another
+ return
+ bsym = query.value(1)
+ boff = query.value(2)
+ bsym_start = query.value(3)
+ if bsym == 0:
+ return
+ tot = bsym_start + boff + 1 - sym_start - off
+ if tot <= 0 or tot > 16384:
+ return
+
+ inst = self.glb.disassembler.Instruction()
+ f = self.glb.FileFromNamesAndBuildId(short_name, long_name, build_id)
+ if not f:
+ return
+ mode = 0 if Is64Bit(f) else 1
+ self.glb.disassembler.SetMode(inst, mode)
+
+ buf_sz = tot + 16
+ buf = create_string_buffer(tot + 16)
+ f.seek(sym_start + off)
+ buf.value = f.read(buf_sz)
+ buf_ptr = addressof(buf)
+ i = 0
+ while tot > 0:
+ cnt, text = self.glb.disassembler.DisassembleOne(inst, buf_ptr, buf_sz, ip)
+ if cnt:
+ byte_str = tohex(ip).rjust(16)
+ for k in xrange(cnt):
+ byte_str += " %02x" % ord(buf[i])
+ i += 1
+ while k < 15:
+ byte_str += " "
+ k += 1
+ self.child_items.append(BranchLevelTwoItem(0, byte_str + " " + text, self))
+ self.child_count += 1
+ else:
+ return
+ buf_ptr += cnt
+ tot -= cnt
+ buf_sz -= cnt
+ ip += cnt
+
+ def childCount(self):
+ if not self.query_done:
+ self.Select()
+ if not self.child_count:
+ return -1
+ return self.child_count
+
+ def hasChildren(self):
+ if not self.query_done:
+ return True
+ return self.child_count > 0
+
+ def getData(self, column):
+ return self.data[column]
+
+# Brance data model root item
+
+class BranchRootItem():
+
+ def __init__(self):
+ self.child_count = 0
+ self.child_items = []
+ self.level = 0
+
+ def getChildItem(self, row):
+ return self.child_items[row]
+
+ def getParentItem(self):
+ return None
+
+ def getRow(self):
+ return 0
+
+ def childCount(self):
+ return self.child_count
+
+ def hasChildren(self):
+ return self.child_count > 0
+
+ def getData(self, column):
+ return ""
+
+# Branch data preparation
+
+def BranchDataPrep(query):
+ data = []
+ for i in xrange(0, 8):
+ data.append(query.value(i))
+ data.append(tohex(query.value(8)).rjust(16) + " " + query.value(9) + offstr(query.value(10)) +
+ " (" + dsoname(query.value(11)) + ")" + " -> " +
+ tohex(query.value(12)) + " " + query.value(13) + offstr(query.value(14)) +
+ " (" + dsoname(query.value(15)) + ")")
+ return data
+
+# Branch data model
+
+class BranchModel(TreeModel):
+
+ progress = Signal(object)
+
+ def __init__(self, glb, event_id, where_clause, parent=None):
+ super(BranchModel, self).__init__(BranchRootItem(), parent)
+ self.glb = glb
+ self.event_id = event_id
+ self.more = True
+ self.populated = 0
+ sql = ("SELECT samples.id, time, cpu, comm, pid, tid, branch_types.name,"
+ " CASE WHEN in_tx = '0' THEN 'No' ELSE 'Yes' END,"
+ " ip, symbols.name, sym_offset, dsos.short_name,"
+ " to_ip, to_symbols.name, to_sym_offset, to_dsos.short_name"
+ " FROM samples"
+ " INNER JOIN comms ON comm_id = comms.id"
+ " INNER JOIN threads ON thread_id = threads.id"
+ " INNER JOIN branch_types ON branch_type = branch_types.id"
+ " INNER JOIN symbols ON symbol_id = symbols.id"
+ " INNER JOIN symbols to_symbols ON to_symbol_id = to_symbols.id"
+ " INNER JOIN dsos ON samples.dso_id = dsos.id"
+ " INNER JOIN dsos AS to_dsos ON samples.to_dso_id = to_dsos.id"
+ " WHERE samples.id > $$last_id$$" + where_clause +
+ " AND evsel_id = " + str(self.event_id) +
+ " ORDER BY samples.id"
+ " LIMIT " + str(glb_chunk_sz))
+ self.fetcher = SQLFetcher(glb, sql, BranchDataPrep, self.AddSample)
+ self.fetcher.done.connect(self.Update)
+ self.fetcher.Fetch(glb_chunk_sz)
+
+ def columnCount(self, parent=None):
+ return 8
+
+ def columnHeader(self, column):
+ return ("Time", "CPU", "Command", "PID", "TID", "Branch Type", "In Tx", "Branch")[column]
+
+ def columnFont(self, column):
+ if column != 7:
+ return None
+ return QFont("Monospace")
+
+ def DisplayData(self, item, index):
+ if item.level == 1:
+ self.FetchIfNeeded(item.row)
+ return item.getData(index.column())
+
+ def AddSample(self, data):
+ child = BranchLevelOneItem(self.glb, self.populated, data, self.root)
+ self.root.child_items.append(child)
+ self.populated += 1
+
+ def Update(self, fetched):
+ if not fetched:
+ self.more = False
+ self.progress.emit(0)
+ child_count = self.root.child_count
+ count = self.populated - child_count
+ if count > 0:
+ parent = QModelIndex()
+ self.beginInsertRows(parent, child_count, child_count + count - 1)
+ self.insertRows(child_count, count, parent)
+ self.root.child_count += count
+ self.endInsertRows()
+ self.progress.emit(self.root.child_count)
+
+ def FetchMoreRecords(self, count):
+ current = self.root.child_count
+ if self.more:
+ self.fetcher.Fetch(count)
+ else:
+ self.progress.emit(0)
+ return current
+
+ def HasMoreRecords(self):
+ return self.more
+
+# Branch window
+
+class BranchWindow(QMdiSubWindow):
+
+ def __init__(self, glb, event_id, name, where_clause, parent=None):
+ super(BranchWindow, self).__init__(parent)
+
+ model_name = "Branch Events " + str(event_id)
+ if len(where_clause):
+ model_name = where_clause + " " + model_name
+
+ self.model = LookupCreateModel(model_name, lambda: BranchModel(glb, event_id, where_clause))
+
+ self.view = QTreeView()
+ self.view.setUniformRowHeights(True)
+ self.view.setModel(self.model)
+
+ self.ResizeColumnsToContents()
+
+ self.find_bar = FindBar(self, self, True)
+
+ self.finder = ChildDataItemFinder(self.model.root)
+
+ self.fetch_bar = FetchMoreRecordsBar(self.model, self)
+
+ self.vbox = VBox(self.view, self.find_bar.Widget(), self.fetch_bar.Widget())
+
+ self.setWidget(self.vbox.Widget())
+
+ AddSubWindow(glb.mainwindow.mdi_area, self, name + " Branch Events")
+
+ def ResizeColumnToContents(self, column, n):
+ # Using the view's resizeColumnToContents() here is extrememly slow
+ # so implement a crude alternative
+ mm = "MM" if column else "MMMM"
+ font = self.view.font()
+ metrics = QFontMetrics(font)
+ max = 0
+ for row in xrange(n):
+ val = self.model.root.child_items[row].data[column]
+ len = metrics.width(str(val) + mm)
+ max = len if len > max else max
+ val = self.model.columnHeader(column)
+ len = metrics.width(str(val) + mm)
+ max = len if len > max else max
+ self.view.setColumnWidth(column, max)
+
+ def ResizeColumnsToContents(self):
+ n = min(self.model.root.child_count, 100)
+ if n < 1:
+ # No data yet, so connect a signal to notify when there is
+ self.model.rowsInserted.connect(self.UpdateColumnWidths)
+ return
+ columns = self.model.columnCount()
+ for i in xrange(columns):
+ self.ResizeColumnToContents(i, n)
+
+ def UpdateColumnWidths(self, *x):
+ # This only needs to be done once, so disconnect the signal now
+ self.model.rowsInserted.disconnect(self.UpdateColumnWidths)
+ self.ResizeColumnsToContents()
+
+ def Find(self, value, direction, pattern, context):
+ self.view.setFocus()
+ self.find_bar.Busy()
+ self.finder.Find(value, direction, pattern, context, self.FindDone)
+
+ def FindDone(self, row):
+ self.find_bar.Idle()
+ if row >= 0:
+ self.view.setCurrentIndex(self.model.index(row, 0, QModelIndex()))
+ else:
+ self.find_bar.NotFound()
+
+# Event list
+
+def GetEventList(db):
+ events = []
+ query = QSqlQuery(db)
+ QueryExec(query, "SELECT name FROM selected_events WHERE id > 0 ORDER BY id")
+ while query.next():
+ events.append(query.value(0))
+ return events
+
+# SQL data preparation
+
+def SQLTableDataPrep(query, count):
+ data = []
+ for i in xrange(count):
+ data.append(query.value(i))
+ return data
+
+# SQL table data model item
+
+class SQLTableItem():
+
+ def __init__(self, row, data):
+ self.row = row
+ self.data = data
+
+ def getData(self, column):
+ return self.data[column]
+
+# SQL table data model
+
+class SQLTableModel(TableModel):
+
+ progress = Signal(object)
+
+ def __init__(self, glb, sql, column_count, parent=None):
+ super(SQLTableModel, self).__init__(parent)
+ self.glb = glb
+ self.more = True
+ self.populated = 0
+ self.fetcher = SQLFetcher(glb, sql, lambda x, y=column_count: SQLTableDataPrep(x, y), self.AddSample)
+ self.fetcher.done.connect(self.Update)
+ self.fetcher.Fetch(glb_chunk_sz)
+
+ def DisplayData(self, item, index):
+ self.FetchIfNeeded(item.row)
+ return item.getData(index.column())
+
+ def AddSample(self, data):
+ child = SQLTableItem(self.populated, data)
+ self.child_items.append(child)
+ self.populated += 1
+
+ def Update(self, fetched):
+ if not fetched:
+ self.more = False
+ self.progress.emit(0)
+ child_count = self.child_count
+ count = self.populated - child_count
+ if count > 0:
+ parent = QModelIndex()
+ self.beginInsertRows(parent, child_count, child_count + count - 1)
+ self.insertRows(child_count, count, parent)
+ self.child_count += count
+ self.endInsertRows()
+ self.progress.emit(self.child_count)
+
+ def FetchMoreRecords(self, count):
+ current = self.child_count
+ if self.more:
+ self.fetcher.Fetch(count)
+ else:
+ self.progress.emit(0)
+ return current
+
+ def HasMoreRecords(self):
+ return self.more
+
+# SQL automatic table data model
+
+class SQLAutoTableModel(SQLTableModel):
+
+ def __init__(self, glb, table_name, parent=None):
+ sql = "SELECT * FROM " + table_name + " WHERE id > $$last_id$$ ORDER BY id LIMIT " + str(glb_chunk_sz)
+ if table_name == "comm_threads_view":
+ # For now, comm_threads_view has no id column
+ sql = "SELECT * FROM " + table_name + " WHERE comm_id > $$last_id$$ ORDER BY comm_id LIMIT " + str(glb_chunk_sz)
+ self.column_headers = []
+ query = QSqlQuery(glb.db)
+ if glb.dbref.is_sqlite3:
+ QueryExec(query, "PRAGMA table_info(" + table_name + ")")
+ while query.next():
+ self.column_headers.append(query.value(1))
+ if table_name == "sqlite_master":
+ sql = "SELECT * FROM " + table_name
+ else:
+ if table_name[:19] == "information_schema.":
+ sql = "SELECT * FROM " + table_name
+ select_table_name = table_name[19:]
+ schema = "information_schema"
+ else:
+ select_table_name = table_name
+ schema = "public"
+ QueryExec(query, "SELECT column_name FROM information_schema.columns WHERE table_schema = '" + schema + "' and table_name = '" + select_table_name + "'")
+ while query.next():
+ self.column_headers.append(query.value(0))
+ super(SQLAutoTableModel, self).__init__(glb, sql, len(self.column_headers), parent)
+
+ def columnCount(self, parent=None):
+ return len(self.column_headers)
+
+ def columnHeader(self, column):
+ return self.column_headers[column]
+
+# Base class for custom ResizeColumnsToContents
+
+class ResizeColumnsToContentsBase(QObject):
+
+ def __init__(self, parent=None):
+ super(ResizeColumnsToContentsBase, self).__init__(parent)
+
+ def ResizeColumnToContents(self, column, n):
+ # Using the view's resizeColumnToContents() here is extrememly slow
+ # so implement a crude alternative
+ font = self.view.font()
+ metrics = QFontMetrics(font)
+ max = 0
+ for row in xrange(n):
+ val = self.data_model.child_items[row].data[column]
+ len = metrics.width(str(val) + "MM")
+ max = len if len > max else max
+ val = self.data_model.columnHeader(column)
+ len = metrics.width(str(val) + "MM")
+ max = len if len > max else max
+ self.view.setColumnWidth(column, max)
+
+ def ResizeColumnsToContents(self):
+ n = min(self.data_model.child_count, 100)
+ if n < 1:
+ # No data yet, so connect a signal to notify when there is
+ self.data_model.rowsInserted.connect(self.UpdateColumnWidths)
+ return
+ columns = self.data_model.columnCount()
+ for i in xrange(columns):
+ self.ResizeColumnToContents(i, n)
+
+ def UpdateColumnWidths(self, *x):
+ # This only needs to be done once, so disconnect the signal now
+ self.data_model.rowsInserted.disconnect(self.UpdateColumnWidths)
+ self.ResizeColumnsToContents()
+
+# Table window
+
+class TableWindow(QMdiSubWindow, ResizeColumnsToContentsBase):
+
+ def __init__(self, glb, table_name, parent=None):
+ super(TableWindow, self).__init__(parent)
+
+ self.data_model = LookupCreateModel(table_name + " Table", lambda: SQLAutoTableModel(glb, table_name))
+
+ self.model = QSortFilterProxyModel()
+ self.model.setSourceModel(self.data_model)
+
+ self.view = QTableView()
+ self.view.setModel(self.model)
+ self.view.setEditTriggers(QAbstractItemView.NoEditTriggers)
+ self.view.verticalHeader().setVisible(False)
+ self.view.sortByColumn(-1, Qt.AscendingOrder)
+ self.view.setSortingEnabled(True)
+
+ self.ResizeColumnsToContents()
+
+ self.find_bar = FindBar(self, self, True)
+
+ self.finder = ChildDataItemFinder(self.data_model)
+
+ self.fetch_bar = FetchMoreRecordsBar(self.data_model, self)
+
+ self.vbox = VBox(self.view, self.find_bar.Widget(), self.fetch_bar.Widget())
+
+ self.setWidget(self.vbox.Widget())
+
+ AddSubWindow(glb.mainwindow.mdi_area, self, table_name + " Table")
+
+ def Find(self, value, direction, pattern, context):
+ self.view.setFocus()
+ self.find_bar.Busy()
+ self.finder.Find(value, direction, pattern, context, self.FindDone)
+
+ def FindDone(self, row):
+ self.find_bar.Idle()
+ if row >= 0:
+ self.view.setCurrentIndex(self.model.index(row, 0, QModelIndex()))
+ else:
+ self.find_bar.NotFound()
+
+# Table list
+
+def GetTableList(glb):
+ tables = []
+ query = QSqlQuery(glb.db)
+ if glb.dbref.is_sqlite3:
+ QueryExec(query, "SELECT name FROM sqlite_master WHERE type IN ( 'table' , 'view' ) ORDER BY name")
+ else:
+ QueryExec(query, "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public' AND table_type IN ( 'BASE TABLE' , 'VIEW' ) ORDER BY table_name")
+ while query.next():
+ tables.append(query.value(0))
+ if glb.dbref.is_sqlite3:
+ tables.append("sqlite_master")
+ else:
+ tables.append("information_schema.tables")
+ tables.append("information_schema.views")
+ tables.append("information_schema.columns")
+ return tables
+
# Action Definition
def CreateAction(label, tip, callback, parent=None, shortcut=None):
def setActiveSubWindow(self, nr):
self.mdi_area.setActiveSubWindow(self.mdi_area.subWindowList()[nr - 1])
+# Font resize
+
+def ResizeFont(widget, diff):
+ font = widget.font()
+ sz = font.pointSize()
+ font.setPointSize(sz + diff)
+ widget.setFont(font)
+
+def ShrinkFont(widget):
+ ResizeFont(widget, -1)
+
+def EnlargeFont(widget):
+ ResizeFont(widget, 1)
+
# Unique name for sub-windows
def NumberedWindowName(name, nr):
edit_menu = menu.addMenu("&Edit")
edit_menu.addAction(CreateAction("&Find...", "Find items", self.Find, self, QKeySequence.Find))
+ edit_menu.addAction(CreateAction("Fetch &more records...", "Fetch more records", self.FetchMoreRecords, self, [QKeySequence(Qt.Key_F8)]))
+ edit_menu.addAction(CreateAction("&Shrink Font", "Make text smaller", self.ShrinkFont, self, [QKeySequence("Ctrl+-")]))
+ edit_menu.addAction(CreateAction("&Enlarge Font", "Make text bigger", self.EnlargeFont, self, [QKeySequence("Ctrl++")]))
reports_menu = menu.addMenu("&Reports")
reports_menu.addAction(CreateAction("Context-Sensitive Call &Graph", "Create a new window containing a context-sensitive call graph", self.NewCallGraph, self))
+ self.EventMenu(GetEventList(glb.db), reports_menu)
+
+ self.TableMenu(GetTableList(glb), menu)
+
self.window_menu = WindowMenu(self.mdi_area, menu)
def Find(self):
except:
pass
+ def FetchMoreRecords(self):
+ win = self.mdi_area.activeSubWindow()
+ if win:
+ try:
+ win.fetch_bar.Activate()
+ except:
+ pass
+
+ def ShrinkFont(self):
+ win = self.mdi_area.activeSubWindow()
+ ShrinkFont(win.view)
+
+ def EnlargeFont(self):
+ win = self.mdi_area.activeSubWindow()
+ EnlargeFont(win.view)
+
+ def EventMenu(self, events, reports_menu):
+ branches_events = 0
+ for event in events:
+ event = event.split(":")[0]
+ if event == "branches":
+ branches_events += 1
+ dbid = 0
+ for event in events:
+ dbid += 1
+ event = event.split(":")[0]
+ if event == "branches":
+ label = "All branches" if branches_events == 1 else "All branches " + "(id=" + dbid + ")"
+ reports_menu.addAction(CreateAction(label, "Create a new window displaying branch events", lambda x=dbid: self.NewBranchView(x), self))
+
+ def TableMenu(self, tables, menu):
+ table_menu = menu.addMenu("&Tables")
+ for table in tables:
+ table_menu.addAction(CreateAction(table, "Create a new window containing a table view", lambda t=table: self.NewTableView(t), self))
+
def NewCallGraph(self):
CallGraphWindow(self.glb, self)
+ def NewBranchView(self, event_id):
+ BranchWindow(self.glb, event_id, "", "", self)
+
+ def NewTableView(self, table_name):
+ TableWindow(self.glb, table_name, self)
+
+# XED Disassembler
+
+class xed_state_t(Structure):
+
+ _fields_ = [
+ ("mode", c_int),
+ ("width", c_int)
+ ]
+
+class XEDInstruction():
+
+ def __init__(self, libxed):
+ # Current xed_decoded_inst_t structure is 192 bytes. Use 512 to allow for future expansion
+ xedd_t = c_byte * 512
+ self.xedd = xedd_t()
+ self.xedp = addressof(self.xedd)
+ libxed.xed_decoded_inst_zero(self.xedp)
+ self.state = xed_state_t()
+ self.statep = addressof(self.state)
+ # Buffer for disassembled instruction text
+ self.buffer = create_string_buffer(256)
+ self.bufferp = addressof(self.buffer)
+
+class LibXED():
+
+ def __init__(self):
+ self.libxed = CDLL("libxed.so")
+
+ self.xed_tables_init = self.libxed.xed_tables_init
+ self.xed_tables_init.restype = None
+ self.xed_tables_init.argtypes = []
+
+ self.xed_decoded_inst_zero = self.libxed.xed_decoded_inst_zero
+ self.xed_decoded_inst_zero.restype = None
+ self.xed_decoded_inst_zero.argtypes = [ c_void_p ]
+
+ self.xed_operand_values_set_mode = self.libxed.xed_operand_values_set_mode
+ self.xed_operand_values_set_mode.restype = None
+ self.xed_operand_values_set_mode.argtypes = [ c_void_p, c_void_p ]
+
+ self.xed_decoded_inst_zero_keep_mode = self.libxed.xed_decoded_inst_zero_keep_mode
+ self.xed_decoded_inst_zero_keep_mode.restype = None
+ self.xed_decoded_inst_zero_keep_mode.argtypes = [ c_void_p ]
+
+ self.xed_decode = self.libxed.xed_decode
+ self.xed_decode.restype = c_int
+ self.xed_decode.argtypes = [ c_void_p, c_void_p, c_uint ]
+
+ self.xed_format_context = self.libxed.xed_format_context
+ self.xed_format_context.restype = c_uint
+ self.xed_format_context.argtypes = [ c_int, c_void_p, c_void_p, c_int, c_ulonglong, c_void_p, c_void_p ]
+
+ self.xed_tables_init()
+
+ def Instruction(self):
+ return XEDInstruction(self)
+
+ def SetMode(self, inst, mode):
+ if mode:
+ inst.state.mode = 4 # 32-bit
+ inst.state.width = 4 # 4 bytes
+ else:
+ inst.state.mode = 1 # 64-bit
+ inst.state.width = 8 # 8 bytes
+ self.xed_operand_values_set_mode(inst.xedp, inst.statep)
+
+ def DisassembleOne(self, inst, bytes_ptr, bytes_cnt, ip):
+ self.xed_decoded_inst_zero_keep_mode(inst.xedp)
+ err = self.xed_decode(inst.xedp, bytes_ptr, bytes_cnt)
+ if err:
+ return 0, ""
+ # Use AT&T mode (2), alternative is Intel (3)
+ ok = self.xed_format_context(2, inst.xedp, inst.bufferp, sizeof(inst.buffer), ip, 0, 0)
+ if not ok:
+ return 0, ""
+ # Return instruction length and the disassembled instruction text
+ # For now, assume the length is in byte 166
+ return inst.xedd[166], inst.buffer.value
+
+def TryOpen(file_name):
+ try:
+ return open(file_name, "rb")
+ except:
+ return None
+
+def Is64Bit(f):
+ result = sizeof(c_void_p)
+ # ELF support only
+ pos = f.tell()
+ f.seek(0)
+ header = f.read(7)
+ f.seek(pos)
+ magic = header[0:4]
+ eclass = ord(header[4])
+ encoding = ord(header[5])
+ version = ord(header[6])
+ if magic == chr(127) + "ELF" and eclass > 0 and eclass < 3 and encoding > 0 and encoding < 3 and version == 1:
+ result = True if eclass == 2 else False
+ return result
+
# Global data
class Glb():
self.dbref = dbref
self.db = db
self.dbname = dbname
+ self.home_dir = os.path.expanduser("~")
+ self.buildid_dir = os.getenv("PERF_BUILDID_DIR")
+ if self.buildid_dir:
+ self.buildid_dir += "/.build-id/"
+ else:
+ self.buildid_dir = self.home_dir + "/.debug/.build-id/"
self.app = None
self.mainwindow = None
+ self.instances_to_shutdown_on_exit = weakref.WeakSet()
+ try:
+ self.disassembler = LibXED()
+ self.have_disassembler = True
+ except:
+ self.have_disassembler = False
+
+ def FileFromBuildId(self, build_id):
+ file_name = self.buildid_dir + build_id[0:2] + "/" + build_id[2:] + "/elf"
+ return TryOpen(file_name)
+
+ def FileFromNamesAndBuildId(self, short_name, long_name, build_id):
+ # Assume current machine i.e. no support for virtualization
+ if short_name[0:7] == "[kernel" and os.path.basename(long_name) == "kcore":
+ file_name = os.getenv("PERF_KCORE")
+ f = TryOpen(file_name) if file_name else None
+ if f:
+ return f
+ # For now, no special handling if long_name is /proc/kcore
+ f = TryOpen(long_name)
+ if f:
+ return f
+ f = self.FileFromBuildId(build_id)
+ if f:
+ return f
+ return None
+
+ def AddInstanceToShutdownOnExit(self, instance):
+ self.instances_to_shutdown_on_exit.add(instance)
+
+ # Shutdown any background processes or threads
+ def ShutdownInstances(self):
+ for x in self.instances_to_shutdown_on_exit:
+ try:
+ x.Shutdown()
+ except:
+ pass
# Database reference
glb.mainwindow = mainwindow
mainwindow.show()
err = app.exec_()
+ glb.ShutdownInstances()
db.close()
sys.exit(err)
projects / linux.git / blobdiff