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Augment CrashRecoveryContext to have registered "cleanup" objects that can be used to release resources during a crash.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127849 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ted Kremenek
2011-03-18 02:05:11 +00:00
parent efdc115c82
commit a4f9839701
2 changed files with 103 additions and 1 deletions
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38
lib/Support/CrashRecoveryContext.cpp
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@ -57,7 +57,18 @@ public:
static sys::Mutex gCrashRecoveryContexMutex;
static bool gCrashRecoveryEnabled = false;
CrashRecoveryContextCleanup::~CrashRecoveryContextCleanup() {}
CrashRecoveryContext::~CrashRecoveryContext() {
// Reclaim registered resources.
CrashRecoveryContextCleanup *i = head;
while (i) {
CrashRecoveryContextCleanup *tmp = i;
i = tmp->next;
tmp->recoverResources();
delete tmp;
}
CrashRecoveryContextImpl *CRCI = (CrashRecoveryContextImpl *) Impl;
delete CRCI;
}
@ -70,6 +81,33 @@ CrashRecoveryContext *CrashRecoveryContext::GetCurrent() {
return CRCI->CRC;
}
void CrashRecoveryContext::registerCleanup(CrashRecoveryContextCleanup *cleanup)
{
if (!cleanup)
return;
if (head)
head->prev = cleanup;
cleanup->next = head;
head = cleanup;
}
void
CrashRecoveryContext::unregisterCleanup(CrashRecoveryContextCleanup *cleanup) {
if (!cleanup)
return;
if (cleanup == head) {
head = cleanup->next;
if (head)
head->prev = 0;
}
else {
cleanup->prev->next = cleanup->next;
if (cleanup->next)
cleanup->next->prev = cleanup->prev;
}
delete cleanup;
}
#ifdef LLVM_ON_WIN32
// FIXME: No real Win32 implementation currently.