721 lines
20 KiB
Python
721 lines
20 KiB
Python
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import os
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try:
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from urlparse import urlparse
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except ImportError:
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from urllib.parse import urlparse
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try:
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import SocketServer
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except ImportError:
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import socketserver as SocketServer
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import threading
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import tempfile
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import time
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import subprocess
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import os.path
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import elftools.elf.elffile as elffile
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import elftools.elf.constants as elfconst
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def addr2line(toolchain, elf_path, addr):
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"""
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Creates trace reader.
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Parameters
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----------
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toolchain : string
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toolchain prefix to retrieve source line locations using addresses
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elf_path : string
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path to ELF file to use
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addr : int
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address to retrieve source line location
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Returns
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-------
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string
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source line location string
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"""
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try:
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return subprocess.check_output(['%saddr2line' % toolchain, '-e', elf_path, '0x%x' % addr]).decode("utf-8")
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except subprocess.CalledProcessError:
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return ''
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class ParseError(RuntimeError):
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"""
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Parse error exception
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"""
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def __init__(self, message):
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RuntimeError.__init__(self, message)
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class ReaderError(RuntimeError):
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"""
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Trace reader error exception
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"""
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def __init__(self, message):
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RuntimeError.__init__(self, message)
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class ReaderTimeoutError(ReaderError):
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"""
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Trace reader timeout error
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"""
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def __init__(self, tmo, sz):
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ReaderError.__init__(self, 'Timeout %f sec while reading %d bytes!' % (tmo, sz))
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class ReaderShutdownRequest(ReaderError):
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"""
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Trace reader shutdown request error
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Raised when user presses CTRL+C (SIGINT).
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"""
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def __init__(self):
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ReaderError.__init__(self, 'Shutdown request!')
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class Reader:
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"""
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Base abstract reader class
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"""
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def __init__(self, tmo):
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"""
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Constructor
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Parameters
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----------
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tmo : int
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read timeout
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"""
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self.timeout = tmo
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self.need_stop = False
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def read(self, sz):
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"""
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Reads a number of bytes
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Parameters
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----------
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sz : int
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number of bytes to read
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Returns
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-------
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bytes object
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read bytes
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Returns
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-------
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ReaderTimeoutError
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if timeout expires
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ReaderShutdownRequest
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if SIGINT was received during reading
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"""
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pass
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def readline(self):
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"""
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Reads line
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Parameters
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----------
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sz : int
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number of bytes to read
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Returns
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-------
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string
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read line
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"""
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pass
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def forward(self, sz):
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"""
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Moves read pointer to a number of bytes
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Parameters
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----------
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sz : int
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number of bytes to read
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"""
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pass
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def cleanup(self):
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"""
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Cleans up reader
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"""
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self.need_stop = True
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class FileReader(Reader):
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"""
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File reader class
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"""
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def __init__(self, path, tmo):
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"""
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Constructor
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Parameters
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----------
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path : string
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path to file to read
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tmo : int
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see Reader.__init__()
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"""
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Reader.__init__(self, tmo)
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self.trace_file_path = path
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self.trace_file = open(path, 'rb')
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def read(self, sz):
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"""
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see Reader.read()
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"""
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data = b''
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start_tm = time.clock()
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while not self.need_stop:
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data += self.trace_file.read(sz - len(data))
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if len(data) == sz:
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break
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if self.timeout != -1 and time.clock() >= start_tm + self.timeout:
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raise ReaderTimeoutError(self.timeout, sz)
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if self.need_stop:
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raise ReaderShutdownRequest()
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return data
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def get_pos(self):
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"""
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Retrieves current file read position
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Returns
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-------
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int
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read position
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"""
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return self.trace_file.tell()
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def readline(self, linesep=os.linesep):
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"""
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see Reader.read()
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"""
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line = ''
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start_tm = time.clock()
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while not self.need_stop:
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line += self.trace_file.readline().decode("utf-8")
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if line.endswith(linesep):
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break
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if self.timeout != -1 and time.clock() >= start_tm + self.timeout:
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raise ReaderTimeoutError(self.timeout, 1)
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if self.need_stop:
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raise ReaderShutdownRequest()
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return line
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def forward(self, sz):
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"""
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see Reader.read()
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"""
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cur_pos = self.trace_file.tell()
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start_tm = time.clock()
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while not self.need_stop:
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file_sz = os.path.getsize(self.trace_file_path)
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if file_sz - cur_pos >= sz:
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break
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if self.timeout != -1 and time.clock() >= start_tm + self.timeout:
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raise ReaderTimeoutError(self.timeout, sz)
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if self.need_stop:
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raise ReaderShutdownRequest()
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self.trace_file.seek(sz, os.SEEK_CUR)
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class NetRequestHandler:
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"""
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Handler for incoming network requests (connections, datagrams)
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"""
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def handle(self):
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while not self.server.need_stop:
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data = self.rfile.read(1024)
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if len(data) == 0:
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break
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self.server.wtrace.write(data)
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self.server.wtrace.flush()
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class NetReader(FileReader):
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"""
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Base netwoek socket reader class
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"""
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def __init__(self, tmo):
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"""
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see Reader.__init__()
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"""
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fhnd,fname = tempfile.mkstemp()
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FileReader.__init__(self, fname, tmo)
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self.wtrace = os.fdopen(fhnd, 'wb')
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self.server_thread = threading.Thread(target=self.serve_forever)
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self.server_thread.start()
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def cleanup(self):
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"""
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see Reader.cleanup()
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"""
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FileReader.cleanup(self)
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self.shutdown()
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||
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self.server_close()
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self.server_thread.join()
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time.sleep(0.1)
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self.trace_file.close()
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self.wtrace.close()
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||
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class TCPRequestHandler(NetRequestHandler, SocketServer.StreamRequestHandler):
|
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"""
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Handler for incoming TCP connections
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||
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"""
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pass
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||
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||
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class TCPReader(NetReader, SocketServer.TCPServer):
|
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"""
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TCP socket reader class
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||
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"""
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||
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def __init__(self, host, port, tmo):
|
||
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"""
|
||
|
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Constructor
|
||
|
|
|
||
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Parameters
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||
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----------
|
||
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host : string
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|
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see SocketServer.BaseServer.__init__()
|
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port : int
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|
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see SocketServer.BaseServer.__init__()
|
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tmo : int
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see Reader.__init__()
|
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"""
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SocketServer.TCPServer.__init__(self, (host, port), TCPRequestHandler)
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||
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NetReader.__init__(self, tmo)
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||
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|
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class UDPRequestHandler(NetRequestHandler, SocketServer.DatagramRequestHandler):
|
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"""
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Handler for incoming UDP datagrams
|
||
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"""
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||
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pass
|
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||
|
|
|
||
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class UDPReader(NetReader, SocketServer.UDPServer):
|
||
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"""
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UDP socket reader class
|
||
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"""
|
||
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def __init__(self, host, port, tmo):
|
||
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"""
|
||
|
|
Constructor
|
||
|
|
|
||
|
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Parameters
|
||
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----------
|
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host : string
|
||
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see SocketServer.BaseServer.__init__()
|
||
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port : int
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||
|
|
see SocketServer.BaseServer.__init__()
|
||
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tmo : int
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see Reader.__init__()
|
||
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"""
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||
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SocketServer.UDPServer.__init__(self, (host, port), UDPRequestHandler)
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||
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NetReader.__init__(self, tmo)
|
||
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def reader_create(trc_src, tmo):
|
||
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"""
|
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Creates trace reader.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
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trc_src : string
|
||
|
|
trace source URL. Supports 'file:///path/to/file' or (tcp|udp)://host:port
|
||
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tmo : int
|
||
|
|
read timeout
|
||
|
|
|
||
|
|
Returns
|
||
|
|
-------
|
||
|
|
Reader
|
||
|
|
reader object or None if URL scheme is not supported
|
||
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"""
|
||
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url = urlparse(trc_src)
|
||
|
|
if len(url.scheme) == 0 or url.scheme == 'file':
|
||
|
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if os.name == 'nt':
|
||
|
|
# workaround for Windows path
|
||
|
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return FileReader(trc_src[7:], tmo)
|
||
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else:
|
||
|
|
return FileReader(url.path, tmo)
|
||
|
|
if url.scheme == 'tcp':
|
||
|
|
return TCPReader(url.hostname, url.port, tmo)
|
||
|
|
if url.scheme == 'udp':
|
||
|
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return UDPReader(url.hostname, url.port, tmo)
|
||
|
|
return None
|
||
|
|
|
||
|
|
|
||
|
|
class TraceDataProcessor:
|
||
|
|
"""
|
||
|
|
Base abstract class for all trace data processors.
|
||
|
|
"""
|
||
|
|
def __init__(self, print_events, keep_all_events=False):
|
||
|
|
"""
|
||
|
|
Constructor.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
print_events : bool
|
||
|
|
if True every event will be printed as they arrive
|
||
|
|
keep_all_events : bool
|
||
|
|
if True all events will be kept in self.events in the order they arrive
|
||
|
|
"""
|
||
|
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self.print_events = print_events
|
||
|
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self.keep_all_events = keep_all_events
|
||
|
|
self.total_events = 0
|
||
|
|
self.events = []
|
||
|
|
# This can be changed by the root procesor that includes several sub-processors.
|
||
|
|
# It is used access some method of root processor which can contain methods/data common for all sub-processors.
|
||
|
|
# Common info could be current execution context, info about running tasks, available IRQs etc.
|
||
|
|
self.root_proc = self
|
||
|
|
|
||
|
|
def _print_event(self, event):
|
||
|
|
"""
|
||
|
|
Base method to print an event.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
event : object
|
||
|
|
Event object
|
||
|
|
"""
|
||
|
|
print("EVENT[{:d}]: {}".format(self.total_events, event))
|
||
|
|
|
||
|
|
def print_report(self):
|
||
|
|
"""
|
||
|
|
Base method to print report.
|
||
|
|
"""
|
||
|
|
print("Processed {:d} events".format(self.total_events))
|
||
|
|
|
||
|
|
def cleanup(self):
|
||
|
|
"""
|
||
|
|
Base method to make cleanups.
|
||
|
|
"""
|
||
|
|
pass
|
||
|
|
|
||
|
|
def on_new_event(self, event):
|
||
|
|
"""
|
||
|
|
Base method to process event.
|
||
|
|
"""
|
||
|
|
if self.print_events:
|
||
|
|
self._print_event(event)
|
||
|
|
if self.keep_all_events:
|
||
|
|
self.events.append(event)
|
||
|
|
self.total_events += 1
|
||
|
|
|
||
|
|
|
||
|
|
class LogTraceParseError(ParseError):
|
||
|
|
"""
|
||
|
|
Log trace parse error exception.
|
||
|
|
"""
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
def get_str_from_elf(felf, str_addr):
|
||
|
|
"""
|
||
|
|
Retrieves string from ELF file.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
felf : elffile.ELFFile
|
||
|
|
open ELF file handle to retrive format string from
|
||
|
|
str_addr : int
|
||
|
|
address of the string
|
||
|
|
|
||
|
|
Returns
|
||
|
|
-------
|
||
|
|
string
|
||
|
|
string or None if it was not found
|
||
|
|
"""
|
||
|
|
tgt_str = ''
|
||
|
|
for sect in felf.iter_sections():
|
||
|
|
if sect['sh_addr'] == 0 or (sect['sh_flags'] & elfconst.SH_FLAGS.SHF_ALLOC) == 0:
|
||
|
|
continue
|
||
|
|
if str_addr < sect['sh_addr'] or str_addr >= sect['sh_addr'] + sect['sh_size']:
|
||
|
|
continue
|
||
|
|
sec_data = sect.data()
|
||
|
|
for i in range(str_addr - sect['sh_addr'], sect['sh_size']):
|
||
|
|
if type(sec_data) is str:
|
||
|
|
ch = sec_data[i]
|
||
|
|
else:
|
||
|
|
ch = str(chr(sec_data[i]))
|
||
|
|
if ch == '\0':
|
||
|
|
break
|
||
|
|
tgt_str += ch
|
||
|
|
if len(tgt_str) > 0:
|
||
|
|
return tgt_str
|
||
|
|
return None
|
||
|
|
|
||
|
|
|
||
|
|
class LogTraceEvent:
|
||
|
|
"""
|
||
|
|
Log trace event.
|
||
|
|
"""
|
||
|
|
def __init__(self, fmt_addr, log_args):
|
||
|
|
"""
|
||
|
|
Constructor.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
fmt_addr : int
|
||
|
|
address of the format string
|
||
|
|
log_args : list
|
||
|
|
list of log message arguments
|
||
|
|
"""
|
||
|
|
self.fmt_addr = fmt_addr
|
||
|
|
self.args = log_args
|
||
|
|
|
||
|
|
def get_message(self, felf):
|
||
|
|
"""
|
||
|
|
Retrieves log message.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
felf : elffile.ELFFile
|
||
|
|
open ELF file handle to retrive format string from
|
||
|
|
|
||
|
|
Returns
|
||
|
|
-------
|
||
|
|
string
|
||
|
|
formatted log message
|
||
|
|
|
||
|
|
Raises
|
||
|
|
------
|
||
|
|
LogTraceParseError
|
||
|
|
if format string has not been found in ELF file
|
||
|
|
"""
|
||
|
|
fmt_str = get_str_from_elf(felf, self.fmt_addr)
|
||
|
|
if not fmt_str:
|
||
|
|
raise LogTraceParseError('Failed to find format string for 0x%x' % self.fmt_addr)
|
||
|
|
prcnt_idx = 0
|
||
|
|
for i, arg in enumerate(self.args):
|
||
|
|
prcnt_idx = fmt_str.find('%', prcnt_idx, -2) # TODO: check str ending with %
|
||
|
|
if prcnt_idx == -1:
|
||
|
|
break
|
||
|
|
prcnt_idx += 1 # goto next char
|
||
|
|
if fmt_str[prcnt_idx] == 's':
|
||
|
|
# find string
|
||
|
|
arg_str = get_str_from_elf(felf, self.args[i])
|
||
|
|
if arg_str:
|
||
|
|
self.args[i] = arg_str
|
||
|
|
else:
|
||
|
|
self.args[i] = '<None>'
|
||
|
|
fmt_str = fmt_str.replace('%p', '%x')
|
||
|
|
return fmt_str % tuple(self.args)
|
||
|
|
|
||
|
|
|
||
|
|
class BaseLogTraceDataProcessorImpl:
|
||
|
|
"""
|
||
|
|
Base implementation for log data processors.
|
||
|
|
"""
|
||
|
|
def __init__(self, print_log_events=False, elf_path=''):
|
||
|
|
"""
|
||
|
|
Constructor.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
print_log_events : bool
|
||
|
|
if True every log event will be printed as they arrive
|
||
|
|
elf_path : string
|
||
|
|
path to ELF file to retrieve format strings for log messages
|
||
|
|
"""
|
||
|
|
if len(elf_path):
|
||
|
|
self.felf = elffile.ELFFile(open(elf_path, 'rb'))
|
||
|
|
else:
|
||
|
|
self.felf = None
|
||
|
|
self.print_log_events = print_log_events
|
||
|
|
self.messages = []
|
||
|
|
|
||
|
|
def cleanup(self):
|
||
|
|
"""
|
||
|
|
Cleanup
|
||
|
|
"""
|
||
|
|
if self.felf:
|
||
|
|
self.felf.stream.close()
|
||
|
|
|
||
|
|
def print_report(self):
|
||
|
|
"""
|
||
|
|
Prints log report
|
||
|
|
"""
|
||
|
|
print("=============== LOG TRACE REPORT ===============")
|
||
|
|
print("Processed {:d} log messages.".format(len(self.messages)))
|
||
|
|
|
||
|
|
def on_new_event(self, event):
|
||
|
|
"""
|
||
|
|
Processes log events.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
event : LogTraceEvent
|
||
|
|
Event object.
|
||
|
|
"""
|
||
|
|
msg = event.get_message(self.felf)
|
||
|
|
self.messages.append(msg)
|
||
|
|
if self.print_log_events:
|
||
|
|
print(msg),
|
||
|
|
|
||
|
|
|
||
|
|
class HeapTraceParseError(ParseError):
|
||
|
|
"""
|
||
|
|
Heap trace parse error exception.
|
||
|
|
"""
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
class HeapTraceDuplicateAllocError(HeapTraceParseError):
|
||
|
|
"""
|
||
|
|
Heap trace duplicate allocation error exception.
|
||
|
|
"""
|
||
|
|
def __init__(self, addr, new_size, prev_size):
|
||
|
|
"""
|
||
|
|
Constructor.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
addr : int
|
||
|
|
memory block address
|
||
|
|
new_size : int
|
||
|
|
size of the new allocation
|
||
|
|
prev_size : int
|
||
|
|
size of the previous allocation
|
||
|
|
"""
|
||
|
|
HeapTraceParseError.__init__(self, """Duplicate alloc @ 0x{:x}!
|
||
|
|
New alloc is {:d} bytes,
|
||
|
|
previous is {:d} bytes.""".format(addr, new_size, prev_size))
|
||
|
|
|
||
|
|
|
||
|
|
class HeapTraceEvent:
|
||
|
|
"""
|
||
|
|
Heap trace event.
|
||
|
|
"""
|
||
|
|
def __init__(self, ctx_name, in_irq, core_id, ts, alloc, size, addr, callers, toolchain='', elf_path=''):
|
||
|
|
"""
|
||
|
|
Constructor.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
ctx_name : string
|
||
|
|
name of event context (task or IRQ name)
|
||
|
|
in_irq : bool
|
||
|
|
True if event has been generated in IRQ context, otherwise False
|
||
|
|
core_id : int
|
||
|
|
core which generated the event
|
||
|
|
ts : float
|
||
|
|
event timestamp
|
||
|
|
alloc : bool
|
||
|
|
True for allocation event, otherwise False
|
||
|
|
size : int
|
||
|
|
size of allocation; has no meaning for de-allocation event
|
||
|
|
addr : int
|
||
|
|
address of allocation/de-allocation
|
||
|
|
callers : list
|
||
|
|
list of callers (callstack) for event
|
||
|
|
toolchain_pref : string
|
||
|
|
toolchain prefix to retrieve source line locations using addresses
|
||
|
|
elf_path : string
|
||
|
|
path to ELF file to retrieve format strings for log messages
|
||
|
|
"""
|
||
|
|
self.ctx_name = ctx_name
|
||
|
|
self.in_irq = in_irq
|
||
|
|
self.core_id = core_id
|
||
|
|
self.ts = ts
|
||
|
|
self.alloc = alloc
|
||
|
|
self.size = size
|
||
|
|
self.addr = addr
|
||
|
|
self.callers = callers
|
||
|
|
self.toolchain = toolchain
|
||
|
|
self.elf_path = elf_path
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
if len(self.toolchain) and len(self.elf_path):
|
||
|
|
callers = os.linesep
|
||
|
|
for addr in self.callers:
|
||
|
|
callers += '{}'.format(addr2line(self.toolchain, self.elf_path, addr))
|
||
|
|
else:
|
||
|
|
callers = ''
|
||
|
|
for addr in self.callers:
|
||
|
|
if len(callers):
|
||
|
|
callers += ':'
|
||
|
|
callers += '0x{:x}'.format(addr)
|
||
|
|
if self.in_irq:
|
||
|
|
ctx_desc = 'IRQ "%s"' % self.ctx_name
|
||
|
|
else:
|
||
|
|
ctx_desc = 'task "%s"' % self.ctx_name
|
||
|
|
if self.alloc:
|
||
|
|
return "[{:.9f}] HEAP: Allocated {:d} bytes @ 0x{:x} from {} on core {:d} by: {}".format(self.ts, self.size,
|
||
|
|
self.addr, ctx_desc,
|
||
|
|
self.core_id, callers)
|
||
|
|
else:
|
||
|
|
return "[{:.9f}] HEAP: Freed bytes @ 0x{:x} from {} on core {:d} by: {}".format(self.ts, self.addr, ctx_desc,
|
||
|
|
self.core_id, callers)
|
||
|
|
|
||
|
|
|
||
|
|
class BaseHeapTraceDataProcessorImpl:
|
||
|
|
"""
|
||
|
|
Base implementation for heap data processors.
|
||
|
|
"""
|
||
|
|
def __init__(self, print_heap_events=False):
|
||
|
|
"""
|
||
|
|
Constructor.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
print_heap_events : bool
|
||
|
|
if True every heap event will be printed as they arrive
|
||
|
|
"""
|
||
|
|
self._alloc_addrs = {}
|
||
|
|
self.allocs = []
|
||
|
|
self.frees = []
|
||
|
|
self.heap_events_count = 0
|
||
|
|
self.print_heap_events = print_heap_events
|
||
|
|
|
||
|
|
def on_new_event(self, event):
|
||
|
|
"""
|
||
|
|
Processes heap events. Keeps track of active allocations list.
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
event : HeapTraceEvent
|
||
|
|
Event object.
|
||
|
|
"""
|
||
|
|
self.heap_events_count += 1
|
||
|
|
if self.print_heap_events:
|
||
|
|
print(event)
|
||
|
|
if event.alloc:
|
||
|
|
if event.addr in self._alloc_addrs:
|
||
|
|
raise HeapTraceDuplicateAllocError(event.addr, event.size, self._alloc_addrs[event.addr].size)
|
||
|
|
self.allocs.append(event)
|
||
|
|
self._alloc_addrs[event.addr] = event
|
||
|
|
else:
|
||
|
|
# do not treat free on unknown addresses as errors, because these blocks coould be allocated when tracing was disabled
|
||
|
|
if event.addr in self._alloc_addrs:
|
||
|
|
event.size = self._alloc_addrs[event.addr].size
|
||
|
|
self.allocs.remove(self._alloc_addrs[event.addr])
|
||
|
|
del self._alloc_addrs[event.addr]
|
||
|
|
else:
|
||
|
|
self.frees.append(event)
|
||
|
|
|
||
|
|
def print_report(self):
|
||
|
|
"""
|
||
|
|
Prints heap report
|
||
|
|
"""
|
||
|
|
print("=============== HEAP TRACE REPORT ===============")
|
||
|
|
print("Processed {:d} heap events.".format(self.heap_events_count))
|
||
|
|
if len(self.allocs) == 0:
|
||
|
|
print("OK - Heap errors was not found.")
|
||
|
|
return
|
||
|
|
leaked_bytes = 0
|
||
|
|
for alloc in self.allocs:
|
||
|
|
leaked_bytes += alloc.size
|
||
|
|
print(alloc)
|
||
|
|
for free in self.frees:
|
||
|
|
if free.addr > alloc.addr and free.addr <= alloc.addr + alloc.size:
|
||
|
|
print("Possible wrong free operation found")
|
||
|
|
print(free)
|
||
|
|
print("Found {:d} leaked bytes in {:d} blocks.".format(leaked_bytes, len(self.allocs)))
|