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Print stacktrace in STDERR before dying on a fatal signal. Currently

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the symbols are not demangled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11620 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos
2004-02-19 07:36:35 +00:00
parent 2acef2da06
commit 280f9c939d
1 changed files with 7 additions and 1 deletions
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8
lib/Support/Signals.cpp
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@@ -17,7 +17,9 @@
#include <algorithm> #include <algorithm>
#include <cstdlib> #include <cstdlib>
#include <cstdio> #include <cstdio>
#include <execinfo.h>
#include <signal.h> #include <signal.h>
#include <unistd.h>
#include "Config/config.h" // Get the signal handler return type #include "Config/config.h" // Get the signal handler return type
using namespace llvm; using namespace llvm;
@@ -39,6 +41,7 @@ static const int KillSigs[] = {
}; };
static const int *KillSigsEnd = KillSigs + sizeof(KillSigs)/sizeof(KillSigs[0]); static const int *KillSigsEnd = KillSigs + sizeof(KillSigs)/sizeof(KillSigs[0]);
static void* StackTrace[256];
// SignalHandler - The signal handler that runs... // SignalHandler - The signal handler that runs...
static RETSIGTYPE SignalHandler(int Sig) { static RETSIGTYPE SignalHandler(int Sig) {
@@ -50,7 +53,10 @@ static RETSIGTYPE SignalHandler(int Sig) {
if (std::find(IntSigs, IntSigsEnd, Sig) != IntSigsEnd) if (std::find(IntSigs, IntSigsEnd, Sig) != IntSigsEnd)
exit(1); // If this is an interrupt signal, exit the program exit(1); // If this is an interrupt signal, exit the program
// Otherwise if it is a fault (like SEGV) reissue the signal to die... // Otherwise if it is a fault (like SEGV) output the stacktrace to
// STDERR and reissue the signal to die...
int depth = backtrace(StackTrace, sizeof(StackTrace)/sizeof(StackTrace[0]));
backtrace_symbols_fd(StackTrace, depth, STDERR_FILENO);
signal(Sig, SIG_DFL); signal(Sig, SIG_DFL);
} }