X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FSupport%2FPrettyStackTrace.cpp;h=23ee5ab105aec8316f598e42b261f2a4d4297bd2;hb=a3fb49cd851cd3b593fc653dc3ba4434c2e1232f;hp=1462ef0eb813e58643b6a85e50fcf1ec0fb0a893;hpb=d56786f79a00fd47a805a17276853ffd9dc4e921;p=oota-llvm.git

diff --git a/lib/Support/PrettyStackTrace.cpp b/lib/Support/PrettyStackTrace.cpp
index 1462ef0eb81..23ee5ab105a 100644
--- a/lib/Support/PrettyStackTrace.cpp
+++ b/lib/Support/PrettyStackTrace.cpp
@@ -8,61 +8,120 @@
 //===----------------------------------------------------------------------===//
 //
 // This file defines some helpful functions for dealing with the possibility of
-// Unix signals occuring while your program is running.
+// Unix signals occurring while your program is running.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Config/config.h"     // Get autoconf configuration settings
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/ThreadLocal.h"
+#include "llvm/Support/Watchdog.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
+
+#ifdef HAVE_CRASHREPORTERCLIENT_H
+#include <CrashReporterClient.h>
+#endif
+
 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;
   if (Entry->getNextEntry())
     NextID = PrintStack(Entry->getNextEntry(), OS);
   OS << NextID << ".\t";
-  Entry->print(OS);
+  {
+    sys::Watchdog W(5);
+    Entry->print(OS);
+  }
   
   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 libraries.
+#if defined (__APPLE__) && HAVE_CRASHREPORTERCLIENT_H
+//  If any clients of llvm try to link to libCrashReporterClient.a themselves,
+//  only one crash info struct will be used.
+extern "C" {
+CRASH_REPORTER_CLIENT_HIDDEN 
+struct crashreporter_annotations_t gCRAnnotations 
+        __attribute__((section("__DATA," CRASHREPORTER_ANNOTATIONS_SECTION))) 
+        = { CRASHREPORTER_ANNOTATIONS_VERSION, 0, 0, 0, 0, 0, 0 };
+}
+#elif defined (__APPLE__) && HAVE_CRASHREPORTER_INFO
+static const char *__crashreporter_info__ = 0;
+asm(".desc ___crashreporter_info__, 0x10");
+#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 *) {
+#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()) {
+#ifdef HAVE_CRASHREPORTERCLIENT_H
+    // Cast to void to avoid warning.
+    (void)CRSetCrashLogMessage(std::string(TmpStr.str()).c_str());
+#elif HAVE_CRASHREPORTER_INFO 
+    __crashreporter_info__ = strdup(std::string(TmpStr.str()).c_str());
+#endif
+    errs() << TmpStr.str();
+  }
+  
+#endif
+}
+
 static bool RegisterCrashPrinter() {
-  sys::AddSignalHandler(CrashHandler, 0);
+  if (!DisablePrettyStackTrace)
+    sys::AddSignalHandler(CrashHandler, 0);
   return false;
 }
 
 PrettyStackTraceEntry::PrettyStackTraceEntry() {
   // The first time this is called, we register the crash printer.
   static bool HandlerRegistered = RegisterCrashPrinter();
-  HandlerRegistered = HandlerRegistered;
+  (void)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 {
@@ -76,4 +135,3 @@ void PrettyStackTraceProgram::print(raw_ostream &OS) const {
     OS << ArgV[i] << ' ';
   OS << '\n';
 }
-