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debugger: cache results of gdb.lookup_type

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This commit is contained in:
hjk
2010-07-06 10:47:10 +02:00
parent 0862afe357
commit 9aa75a7f1e
2 changed files with 67 additions and 29 deletions
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56
share/qtcreator/gdbmacros/dumper.py
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@@ -90,12 +90,50 @@ def isGoodGdb():
# and gdb.VERSION != "6.8.50.20090630-cvs"
return 'parse_and_eval' in __builtin__.dir(gdb)
typeCache = {}
def lookupType(typestring):
type = typeCache.get(typestring)
#warn("LOOKUP 1: %s -> %s" % (typestring, type))
if type is None:
ts = typestring
while True:
#WARN("ts: '%s'" % ts)
if ts.startswith("class "):
ts = ts[6:]
elif ts.startswith("struct "):
ts = ts[7:]
elif ts.startswith("const "):
ts = ts[6:]
elif ts.startswith("volatile "):
ts = ts[9:]
elif ts.startswith("enum "):
ts = ts[5:]
elif ts.endswith("const"):
ts = ts[-5:]
elif ts.endswith("volatile"):
ts = ts[-8:]
else:
break
try:
#warn("LOOKING UP '%s'" % ts)
type = gdb.lookup_type(ts)
except:
# Can throw "RuntimeError: No type named class Foo."
#warn("LOOKING UP '%s' FAILED" % ts)
pass
#warn(" RESULT: '%s'" % type)
#if not type is None:
# warn(" FIELDS: '%s'" % type.fields())
typeCache[typestring] = type
return type
def cleanAddress(addr):
if addr is None:
return "<no address>"
# We cannot use str(addr) as it yields rubbish for char pointers
# that might trigger Unicode encoding errors.
return addr.cast(gdb.lookup_type("void").pointer())
return addr.cast(lookupType("void").pointer())
# Workaround for gdb < 7.1
def numericTemplateArgument(type, position):
@@ -535,7 +573,7 @@ def checkRef(ref):
check(count < 1000000) # assume there aren't a million references to any object
#def couldBePointer(p, align):
# type = gdb.lookup_type("unsigned int")
# type = lookupType("unsigned int")
# ptr = gdb.Value(p).cast(type)
# d = int(str(ptr))
# warn("CHECKING : %s %d " % (p, ((d & 3) == 0 and (d > 1000 or d == 0))))
@@ -559,7 +597,7 @@ def isNull(p):
# for invalid char *, as their "contents" is being examined
#s = str(p)
#return s == "0x0" or s.startswith("0x0 ")
return p.cast(gdb.lookup_type("void").pointer()) == 0
return p.cast(lookupType("void").pointer()) == 0
movableTypes = set([
"QBrush", "QBitArray", "QByteArray",
@@ -648,7 +686,7 @@ def findFirstZero(p, max):
def extractCharArray(p, maxsize):
t = gdb.lookup_type("unsigned char").pointer()
t = lookupType("unsigned char").pointer()
p = p.cast(t)
i = findFirstZero(p, maxsize)
limit = select(i < 0, maxsize, i)
@@ -673,7 +711,7 @@ def extractByteArray(value):
return extractCharArray(data, 100)
def encodeCharArray(p, maxsize, size = -1):
t = gdb.lookup_type("unsigned char").pointer()
t = lookupType("unsigned char").pointer()
p = p.cast(t)
if size == -1:
i = findFirstZero(p, maxsize)
@@ -689,7 +727,7 @@ def encodeCharArray(p, maxsize, size = -1):
return s
def encodeChar2Array(p, maxsize):
t = gdb.lookup_type("unsigned short").pointer()
t = lookupType("unsigned short").pointer()
p = p.cast(t)
i = findFirstZero(p, maxsize)
limit = select(i < 0, maxsize, i)
@@ -702,7 +740,7 @@ def encodeChar2Array(p, maxsize):
return s
def encodeChar4Array(p, maxsize):
t = gdb.lookup_type("unsigned int").pointer()
t = lookupType("unsigned int").pointer()
p = p.cast(t)
i = findFirstZero(p, maxsize)
limit = select(i < 0, maxsize, i)
@@ -1087,7 +1125,7 @@ class Dumper:
def putPointerValue(self, value):
# Use a lower priority
self.putValue("0x%x" % value.dereference().cast(
gdb.lookup_type("unsigned long")), None, -1)
lookupType("unsigned long")), None, -1)
def putStringValue(self, value):
if value is None:
@@ -1370,7 +1408,7 @@ class Dumper:
if self.isExpanded(item):
if value.type.code == gdb.TYPE_CODE_ARRAY:
baseptr = value.cast(value.type.target().pointer())
charptr = gdb.lookup_type("unsigned char").pointer()
charptr = lookupType("unsigned char").pointer()
addr1 = (baseptr+1).cast(charptr)
addr0 = baseptr.cast(charptr)
self.putField("addrbase" % cleanAddress(addr0))