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Add a new watchdog timer interface. The interface does not permit handling timeouts, so

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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
This commit is contained in:
Nick Lewycky
2013-03-26 01:27:52 +00:00
parent bd3148b285
commit d5e1be03ed
6 changed files with 124 additions and 1 deletions
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6
lib/Support/PrettyStackTrace.cpp
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@ -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 @@ static unsigned PrintStack(const PrettyStackTraceEntry *Entry, raw_ostream &OS){
if (Entry->getNextEntry())
NextID = PrintStack(Entry->getNextEntry(), OS);
OS << NextID << ".\t";
Entry->print(OS);
{
sys::Watchdog W(5);
Entry->print(OS);
}
return NextID+1;
}