зеркало из https://github.com/mozilla/gecko-dev.git
Mark freed memory in stack arena with 0xdd. b=161283 sr=bzbarsky r=kin
This commit is contained in:
Родитель
3ce29e8630
Коммит
22351decd5
|
@ -549,6 +549,20 @@ StackArena::Pop()
|
|||
// pop off the mark
|
||||
NS_ASSERTION(mStackTop > 0, "Error Pop called 1 too many times");
|
||||
mStackTop--;
|
||||
|
||||
#ifdef DEBUG
|
||||
// Mark the "freed" memory with 0xdd to help with debugging of memory
|
||||
// allocation problems.
|
||||
{
|
||||
StackBlock *block = mMarks[mStackTop].mBlock, *block_end = mCurBlock;
|
||||
size_t pos = mMarks[mStackTop].mPos;
|
||||
for (; block != block_end; block = block->mNext, pos = 0) {
|
||||
memset(block->mBlock + pos, 0xdd, sizeof(block->mBlock) - pos);
|
||||
}
|
||||
memset(block->mBlock + pos, 0xdd, mPos - pos);
|
||||
}
|
||||
#endif
|
||||
|
||||
mCurBlock = mMarks[mStackTop].mBlock;
|
||||
mPos = mMarks[mStackTop].mPos;
|
||||
|
||||
|
@ -1870,11 +1884,7 @@ PresShell::PushStackMemory()
|
|||
NS_IMETHODIMP
|
||||
PresShell::PopStackMemory()
|
||||
{
|
||||
if (!mStackArena) {
|
||||
mStackArena = new StackArena();
|
||||
if (!mStackArena)
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
}
|
||||
NS_ENSURE_TRUE(mStackArena, NS_ERROR_UNEXPECTED);
|
||||
|
||||
return mStackArena->Pop();
|
||||
}
|
||||
|
|
|
@ -549,6 +549,20 @@ StackArena::Pop()
|
|||
// pop off the mark
|
||||
NS_ASSERTION(mStackTop > 0, "Error Pop called 1 too many times");
|
||||
mStackTop--;
|
||||
|
||||
#ifdef DEBUG
|
||||
// Mark the "freed" memory with 0xdd to help with debugging of memory
|
||||
// allocation problems.
|
||||
{
|
||||
StackBlock *block = mMarks[mStackTop].mBlock, *block_end = mCurBlock;
|
||||
size_t pos = mMarks[mStackTop].mPos;
|
||||
for (; block != block_end; block = block->mNext, pos = 0) {
|
||||
memset(block->mBlock + pos, 0xdd, sizeof(block->mBlock) - pos);
|
||||
}
|
||||
memset(block->mBlock + pos, 0xdd, mPos - pos);
|
||||
}
|
||||
#endif
|
||||
|
||||
mCurBlock = mMarks[mStackTop].mBlock;
|
||||
mPos = mMarks[mStackTop].mPos;
|
||||
|
||||
|
@ -1870,11 +1884,7 @@ PresShell::PushStackMemory()
|
|||
NS_IMETHODIMP
|
||||
PresShell::PopStackMemory()
|
||||
{
|
||||
if (!mStackArena) {
|
||||
mStackArena = new StackArena();
|
||||
if (!mStackArena)
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
}
|
||||
NS_ENSURE_TRUE(mStackArena, NS_ERROR_UNEXPECTED);
|
||||
|
||||
return mStackArena->Pop();
|
||||
}
|
||||
|
|
Загрузка…
Ссылка в новой задаче