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use abort_message() for pthread errors in __cxa_get_globals 

llvm-svn: 136672
This commit is contained in:
Nick Kledzik 2011-08-02 01:34:26 +00:00
parent 18ab5f4164
commit 7cb4926da1
1 changed files with 15 additions and 9 deletions
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24
libcxxabi/src/cxa_exception_storage.cpp
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@ -34,10 +34,11 @@ extern "C" {
#include <pthread.h>
#include <cstdlib> // for calloc, free
#include <exception> // for std::terminate
#include "abort_message.h"
// In general, we treat all pthread errors as fatal - our error
// reporting mechanism is std::terminate.
// In general, we treat all pthread errors as fatal.
// We cannot call std::terminate() because that will in turn
// call __cxa_get_globals() and cause infinite recursion.
namespace __cxxabiv1 {
namespace {
@ -46,18 +47,21 @@ namespace {
void destruct_ (void *p) throw () {
std::free ( p );
if ( 0 != ::pthread_setspecific ( key_, NULL )) std::terminate ();
if ( 0 != ::pthread_setspecific ( key_, NULL ) )
abort_message("cannot zero out thread value for __cxa_get_globals()");
}
void construct_ () throw () {
if ( 0 != pthread_key_create ( &key_, destruct_ )) std::terminate ();
if ( 0 != pthread_key_create ( &key_, destruct_ ) )
abort_message("cannot create pthread key for __cxa_get_globals()");
}
}
extern "C" {
__cxa_eh_globals * __cxa_get_globals () throw () {
// First time through, create the key.
if ( 0 != pthread_once ( &flag_, construct_ )) std::terminate ();
if ( 0 != pthread_once ( &flag_, construct_ ) )
abort_message("cannot run pthread_once for __cxa_get_globals()");
// Try to get the globals for this thread
__cxa_eh_globals* retVal = __cxa_get_globals_fast ();
@ -66,9 +70,11 @@ extern "C" {
if ( NULL == retVal ) {
retVal = static_cast<__cxa_eh_globals*>
(std::calloc (1, sizeof (__cxa_eh_globals)));
if ( NULL == retVal ) std::terminate ();
if ( 0 != pthread_setspecific ( key_, retVal )) std::terminate ();
}
if ( NULL == retVal )
abort_message("cannot allocate __cxa_eh_globals");
if ( 0 != pthread_setspecific ( key_, retVal ) )
abort_message("pthread_setspecific failure in __cxa_get_globals()");
}
return retVal;
}