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Support thread-local pretty stack traces.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74227 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2009-06-25 23:31:33 +00:00
parent 438d3946af
commit 0b49c32c56
1 changed files with 8 additions and 7 deletions
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15
lib/Support/PrettyStackTrace.cpp
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@ -15,11 +15,12 @@
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Signals.h"
#include "llvm/System/ThreadLocal.h"
#include "llvm/ADT/SmallString.h"
using namespace llvm;
// FIXME: This should be thread local when llvm supports threads.
static const PrettyStackTraceEntry *PrettyStackTraceHead = 0;
static sys::ThreadLocal<const PrettyStackTraceEntry> PrettyStackTraceHead;
static unsigned PrintStack(const PrettyStackTraceEntry *Entry, raw_ostream &OS){
unsigned NextID = 0;
@ -34,12 +35,12 @@ static unsigned PrintStack(const PrettyStackTraceEntry *Entry, raw_ostream &OS){
/// PrintCurStackTrace - Print the current stack trace to the specified stream.
static void PrintCurStackTrace(raw_ostream &OS) {
// Don't print an empty trace.
if (PrettyStackTraceHead == 0) return;
if (PrettyStackTraceHead.get() == 0) return;
// If there are pretty stack frames registered, walk and emit them.
OS << "Stack dump:\n";
PrintStack(PrettyStackTraceHead, OS);
PrintStack(PrettyStackTraceHead.get(), OS);
OS.flush();
}
@ -84,14 +85,14 @@ PrettyStackTraceEntry::PrettyStackTraceEntry() {
HandlerRegistered = HandlerRegistered;
// Link ourselves.
NextEntry = PrettyStackTraceHead;
PrettyStackTraceHead = this;
NextEntry = PrettyStackTraceHead.get();
PrettyStackTraceHead.set(this);
}
PrettyStackTraceEntry::~PrettyStackTraceEntry() {
assert(PrettyStackTraceHead == this &&
assert(PrettyStackTraceHead.get() == this &&
"Pretty stack trace entry destruction is out of order");
PrettyStackTraceHead = getNextEntry();
PrettyStackTraceHead.set(getNextEntry());
}
void PrettyStackTraceString::print(raw_ostream &OS) const {