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Debugger: Use gdb provided hooks to track loaded shared objects

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Change-Id: I4f3cce56910e0e737febaf0ff442956b78b19c30
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
This commit is contained in:
hjk
2017-03-15 09:19:12 +01:00
parent 802eff3485
commit 68a4a3db94
1 changed files with 63 additions and 48 deletions
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111
share/qtcreator/debugger/gdbbridge.py
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@@ -970,58 +970,60 @@ class Dumper(DumperBase):
except:
return 0
def handleNewObjectFile(self, objfile):
name = objfile.filename
if self.isWindowsTarget():
isQtCoreObjFile = name.find('Qt5Cored.dll') >= 0 or name.find('Qt5Core.dll') >= 0
else:
isQtCoreObjFile = name.find('/libQt5Core') >= 0
if isQtCoreObjFile:
self.handleQtCoreLoaded(objfile)
def handleQtCoreLoaded(self, objfile):
fd, tmppath = tempfile.mkstemp()
os.close(fd)
cmd = 'maint print msymbols %s "%s"' % (tmppath, objfile.filename)
try:
symbols = gdb.execute(cmd, to_string = True)
except:
pass
ns = ''
with open(tmppath) as f:
for line in f:
if line.find('msgHandlerGrabbed ') >= 0:
# [11] b 0x7ffff683c000 _ZN4MynsL17msgHandlerGrabbedE
# section .tbss Myns::msgHandlerGrabbed qlogging.cpp
ns = re.split('_ZN?(\d*)(\w*)L17msgHandlerGrabbedE? ', line)[2]
if len(ns):
ns += '::'
break
os.remove(tmppath)
lenns = len(ns)
strns = ('%d%s' % (lenns - 2, ns[:lenns - 2])) if lenns else ''
if lenns:
sym = '_ZN%s7QObject11customEventEPNS_6QEventE' % strns
else:
sym = '_ZN7QObject11customEventEP6QEvent'
self.qtCustomEventFunc = self.findSymbol(sym)
sym += '@plt'
self.qtCustomEventPltFunc = self.findSymbol(sym)
sym = '_ZNK%s7QObject8propertyEPKc' % strns
self.qtPropertyFunc = self.findSymbol(sym)
# This might be wrong, but we can't do better: We found
# a libQt5Core and could not extract a namespace.
# The best guess is that there isn't any.
self.qtNamespaceToReport = ns
self.qtNamespace = lambda: ns
def qtNamespaceX(self):
if not self.currentQtNamespaceGuess is None:
return self.currentQtNamespaceGuess
for objfile in gdb.objfiles():
name = objfile.filename
if self.isWindowsTarget():
isQtCoreObjFile = name.find('Qt5Cored.dll') >= 0 or name.find('Qt5Core.dll') >= 0
else:
isQtCoreObjFile = name.find('/libQt5Core') >= 0
if isQtCoreObjFile:
fd, tmppath = tempfile.mkstemp()
os.close(fd)
cmd = 'maint print msymbols %s "%s"' % (tmppath, name)
try:
symbols = gdb.execute(cmd, to_string = True)
except:
pass
ns = ''
with open(tmppath) as f:
for line in f:
if line.find('msgHandlerGrabbed ') >= 0:
# [11] b 0x7ffff683c000 _ZN4MynsL17msgHandlerGrabbedE
# section .tbss Myns::msgHandlerGrabbed qlogging.cpp
ns = re.split('_ZN?(\d*)(\w*)L17msgHandlerGrabbedE? ', line)[2]
if len(ns):
ns += '::'
break
os.remove(tmppath)
lenns = len(ns)
strns = ('%d%s' % (lenns - 2, ns[:lenns - 2])) if lenns else ''
if lenns:
sym = '_ZN%s7QObject11customEventEPNS_6QEventE' % strns
else:
sym = '_ZN7QObject11customEventEP6QEvent'
self.qtCustomEventFunc = self.findSymbol(sym)
sym += '@plt'
self.qtCustomEventPltFunc = self.findSymbol(sym)
sym = '_ZNK%s7QObject8propertyEPKc' % strns
self.qtPropertyFunc = self.findSymbol(sym)
# This might be wrong, but we can't do better: We found
# a libQt5Core and could not extract a namespace.
# The best guess is that there isn't any.
self.qtNamespaceToReport = ns
self.qtNamespace = lambda: ns
return ns
self.currentQtNamespaceGuess = ''
return ''
@@ -1413,4 +1415,17 @@ class InterpreterMessageBreakpoint(gdb.Breakpoint):
print('Interpreter event received.')
return theDumper.handleInterpreterMessage()
#######################################################################
#
# Shared objects
#
#######################################################################
def new_objfile_handler(event):
return theDumper.handleNewObjectFile(event.new_objfile)
gdb.events.new_objfile.connect(new_objfile_handler)
#InterpreterMessageBreakpoint()