Add a new watchdog timer interface. The interface does not permit handling timeouts, so
it's only really useful if you're going to crash anyways. Use it in the pretty stack trace
printer to kill the compiler if we hang while printing the stack trace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177962 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/PrettyStackTrace.cpp b/lib/Support/PrettyStackTrace.cpp
index 21d56ad..23ee5ab 100644
--- a/lib/Support/PrettyStackTrace.cpp
+++ b/lib/Support/PrettyStackTrace.cpp
@@ -17,6 +17,7 @@
#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"
#ifdef HAVE_CRASHREPORTERCLIENT_H
@@ -37,7 +38,10 @@
if (Entry->getNextEntry())
NextID = PrintStack(Entry->getNextEntry(), OS);
OS << NextID << ".\t";
- Entry->print(OS);
+ {
+ sys::Watchdog W(5);
+ Entry->print(OS);
+ }
return NextID+1;
}