Parser for linux perf callgraph output. More...

Inheritance diagram for pyqpanda3.profiling.gprof2dot.DtraceParser:

Public Member Functions
	__init__ (self, infile)

	readline (self)

	parse (self)

	parse_event (self)

	parse_callchain (self)

	parse_call (self)

Public Member Functions inherited from pyqpanda3.profiling.gprof2dot.LineParser
	lookahead (self)

	consume (self)

	eof (self)

Public Member Functions inherited from pyqpanda3.profiling.gprof2dot.Parser

Public Attributes
	profile = Profile()

Public Attributes inherited from pyqpanda3.profiling.gprof2dot.LineParser
int	line_no = 0

Static Public Attributes
	call_re = re.compile(r'^\s+(?P<module>.)`(?P<symbol>.)')

	addr2_re = re.compile(r'\+0x[0-9a-fA-F]+$')

Static Public Attributes inherited from pyqpanda3.profiling.gprof2dot.LineParser
	XML_ELEMENT_START

	XML_ELEMENT_END

	XML_CHARACTER_DATA

	XML_EOF

Static Public Attributes inherited from pyqpanda3.profiling.gprof2dot.Parser
bool	stdinInput = True

bool	multipleInput = False

Additional Inherited Members
Protected Attributes inherited from pyqpanda3.profiling.gprof2dot.LineParser
	_stream = stream

Detailed Description

Parser for linux perf callgraph output.

It expects output generated with

# Refer to https://github.com/brendangregg/FlameGraph#dtrace
# 60 seconds of user-level stacks, including time spent in-kernel, for PID 12345 at 97 Hertz
sudo dtrace -x ustackframes=100 -n 'profile-97 /pid == 12345/ { @[ustack()] = count(); } tick-60s { exit(0); }' -o out.user_stacks

# The dtrace output
gprof2dot.py -f dtrace out.user_stacks

# Notice: sometimes, the dtrace outputs format may be latin-1, and gprof2dot will fail to parse it.
# To solve this problem, you should use iconv to convert to UTF-8 explicitly.
# TODO: add an encoding flag to tell gprof2dot how to decode the profile file.
iconv -f ISO-8859-1 -t UTF-8 out.user_stacks | gprof2dot.py -f dtrace

Constructor & Destructor Documentation

◆ init()

pyqpanda3.profiling.gprof2dot.DtraceParser.__init__	(		self,
			infile )

Reimplemented from pyqpanda3.profiling.gprof2dot.LineParser.

Member Function Documentation

◆ parse()

pyqpanda3.profiling.gprof2dot.DtraceParser.parse ( self )

Reimplemented from pyqpanda3.profiling.gprof2dot.Parser.

◆ parse_call()

pyqpanda3.profiling.gprof2dot.DtraceParser.parse_call ( self )

◆ parse_callchain()

pyqpanda3.profiling.gprof2dot.DtraceParser.parse_callchain ( self )

◆ parse_event()

pyqpanda3.profiling.gprof2dot.DtraceParser.parse_event ( self )

◆ readline()

pyqpanda3.profiling.gprof2dot.DtraceParser.readline ( self )

Reimplemented from pyqpanda3.profiling.gprof2dot.LineParser.

Member Data Documentation

◆ addr2_re

pyqpanda3.profiling.gprof2dot.DtraceParser.addr2_re = re.compile(r'\+0x[0-9a-fA-F]+$')

static

◆ call_re

pyqpanda3.profiling.gprof2dot.DtraceParser.call_re = re.compile(r'^\s+(?P<module>.*)`(?P<symbol>.*)')

static

◆ profile

pyqpanda3.profiling.gprof2dot.DtraceParser.profile = Profile()

The documentation for this class was generated from the following file:

pyqpanda3/profiling/gprof2dot.py

Public Member Functions

Public Attributes

Static Public Attributes

Additional Inherited Members