projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| a856d4d4 | 1 | /* Bug 14333: Support file for atexit/exit, etc. race tests. |
| 688903eb | 2 | Copyright (C) 2017-2018 Free Software Foundation, Inc. |
| a856d4d4 PP |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, see | |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 18 | ||
| 19 | /* This file must be run from within a directory called "stdlib". */ | |
| 20 | ||
| 21 | /* The atexit/exit, at_quick_exit/quick_exit, __cxa_atexit/exit, etc. | |
| 22 | exhibited data race while accessing destructor function list (Bug 14333). | |
| 23 | ||
| 24 | This test spawns large number of threads, which all race to register | |
| 25 | large number of destructors. | |
| 26 | ||
| 27 | Before the fix, running this test resulted in a SIGSEGV. | |
| 28 | After the fix, we expect clean process termination. */ | |
| 29 | ||
| 30 | #if !defined(CALL_EXIT) || !defined(CALL_ATEXIT) | |
| 31 | #error Must define CALL_EXIT and CALL_ATEXIT before using this file. | |
| 32 | #endif | |
| 33 | ||
| 34 | #include <stdio.h> | |
| 35 | #include <stdlib.h> | |
| 36 | #include <support/xthread.h> | |
| 673e2305 | 37 | #include <limits.h> |
| a856d4d4 PP |
38 | |
| 39 | const size_t kNumThreads = 1024; | |
| 40 | const size_t kNumHandlers = 1024; | |
| 673e2305 | 41 | const size_t kStacksize = |
| 9fdb340e ST |
42 | #ifdef PTHREAD_STACK_MIN |
| 43 | 0x20000 < PTHREAD_STACK_MIN ? PTHREAD_STACK_MIN : | |
| 44 | #endif | |
| 45 | 0x20000; | |
| a856d4d4 PP |
46 | |
| 47 | static void * | |
| 48 | threadfunc (void *unused) | |
| 49 | { | |
| 50 | size_t i; | |
| 51 | for (i = 0; i < kNumHandlers; ++i) { | |
| 52 | CALL_ATEXIT; | |
| 53 | } | |
| 54 | return NULL; | |
| 55 | } | |
| 56 | ||
| 57 | static int | |
| 58 | do_test (void) | |
| 59 | { | |
| 60 | size_t i; | |
| 61 | pthread_attr_t attr; | |
| 62 | ||
| 63 | xpthread_attr_init (&attr); | |
| 64 | xpthread_attr_setdetachstate (&attr, 1); | |
| 65 | ||
| 8f834987 PP |
66 | /* With default 8MiB Linux stack size, creating 1024 threads can cause |
| 67 | VM exhausiton on 32-bit machines. Reduce stack size of each thread to | |
| 68 | 128KiB for a maximum required VM size of 128MiB. */ | |
| 673e2305 | 69 | xpthread_attr_setstacksize (&attr, kStacksize); |
| 8f834987 | 70 | |
| a856d4d4 PP |
71 | for (i = 0; i < kNumThreads; ++i) { |
| 72 | xpthread_create (&attr, threadfunc, NULL); | |
| 73 | } | |
| 74 | xpthread_attr_destroy (&attr); | |
| 75 | ||
| 76 | CALL_EXIT; | |
| 77 | } | |
| 78 | ||
| 79 | #define TEST_FUNCTION do_test | |
| 80 | #include <support/test-driver.c> |