#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;
+namespace llvm {
+ bool DisablePrettyStackTrace = false;
+}
+
// 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;
return NextID+1;
}
-/// CrashHandler - This callback is run if a fatal signal is delivered to the
-/// process, it prints the pretty stack trace.
-static void CrashHandler(void *Cookie) {
+/// 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.
- raw_ostream &OS = errs();
OS << "Stack dump:\n";
- PrintStack(PrettyStackTraceHead, OS);
+ PrintStack(PrettyStackTraceHead.get(), OS);
OS.flush();
}
+// Integrate with crash reporter.
+#ifdef __APPLE__
+extern "C" const char *__crashreporter_info__;
+const char *__crashreporter_info__ = 0;
+#endif
+
+
+/// CrashHandler - This callback is run if a fatal signal is delivered to the
+/// process, it prints the pretty stack trace.
+static void CrashHandler(void *Cookie) {
+#ifndef __APPLE__
+ // On non-apple systems, just emit the crash stack trace to stderr.
+ PrintCurStackTrace(errs());
+#else
+ // Otherwise, emit to a smallvector of chars, send *that* to stderr, but also
+ // put it into __crashreporter_info__.
+ SmallString<2048> TmpStr;
+ {
+ raw_svector_ostream Stream(TmpStr);
+ PrintCurStackTrace(Stream);
+ }
+
+ if (!TmpStr.empty()) {
+ __crashreporter_info__ = strdup(std::string(TmpStr.str()).c_str());
+ errs() << TmpStr.str();
+ }
+
+#endif
+}
+
static bool RegisterCrashPrinter() {
- sys::AddSignalHandler(CrashHandler, 0);
+ if (!DisablePrettyStackTrace)
+ sys::AddSignalHandler(CrashHandler, 0);
return false;
}
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 {