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glibc/nptl/tst-once5.cc
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/* Copyright (C) 2015-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <errno.h> | |
#include <pthread.h> | |
#include <stdio.h> | |
#include <string.h> | |
static pthread_once_t once = PTHREAD_ONCE_INIT; | |
// Exception type thrown from the pthread_once init routine. | |
struct OnceException { }; | |
// Test iteration counter. | |
static int niter; | |
static void | |
init_routine (void) | |
{ | |
if (niter < 2) | |
throw OnceException (); | |
} | |
// Verify that an exception thrown from the pthread_once init routine | |
// is propagated to the pthread_once caller and that the function can | |
// be subsequently invoked to attempt the initialization again. | |
static int | |
do_test (void) | |
{ | |
int result = 1; | |
// Repeat three times, having the init routine throw the first two | |
// times and succeed on the final attempt. | |
for (niter = 0; niter != 3; ++niter) { | |
try { | |
int rc = pthread_once (&once, init_routine); | |
if (rc) | |
fprintf (stderr, "pthread_once failed: %i (%s)\n", | |
rc, strerror (rc)); | |
if (niter < 2) | |
fputs ("pthread_once unexpectedly returned without" | |
" throwing an exception", stderr); | |
} | |
catch (OnceException) { | |
if (1 < niter) | |
fputs ("pthread_once unexpectedly threw", stderr); | |
result = 0; | |
} | |
catch (...) { | |
fputs ("pthread_once threw an unknown exception", stderr); | |
} | |
// Abort the test on the first failure. | |
if (result) | |
break; | |
} | |
return result; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |