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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /nptl/tst-spin2.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.xz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'nptl/tst-spin2.c')
-rw-r--r-- | nptl/tst-spin2.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/nptl/tst-spin2.c b/nptl/tst-spin2.c deleted file mode 100644 index 1a8260d256..0000000000 --- a/nptl/tst-spin2.c +++ /dev/null @@ -1,158 +0,0 @@ -/* Copyright (C) 2002-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. - - 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 <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <sys/mman.h> -#include <sys/wait.h> - - -static int -do_test (void) -{ - size_t ps = sysconf (_SC_PAGESIZE); - char tmpfname[] = "/tmp/tst-spin2.XXXXXX"; - char data[ps]; - void *mem; - int fd; - pthread_spinlock_t *s; - pid_t pid; - char *p; - int err; - - fd = mkstemp (tmpfname); - if (fd == -1) - { - printf ("cannot open temporary file: %m\n"); - return 1; - } - - /* Make sure it is always removed. */ - unlink (tmpfname); - - /* Create one page of data. */ - memset (data, '\0', ps); - - /* Write the data to the file. */ - if (write (fd, data, ps) != (ssize_t) ps) - { - puts ("short write"); - return 1; - } - - mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); - if (mem == MAP_FAILED) - { - printf ("mmap failed: %m\n"); - return 1; - } - - s = (pthread_spinlock_t *) (((uintptr_t) mem - + __alignof (pthread_spinlock_t)) - & ~(__alignof (pthread_spinlock_t) - 1)); - p = (char *) (s + 1); - - if (pthread_spin_init (s, PTHREAD_PROCESS_SHARED) != 0) - { - puts ("spin_init failed"); - return 1; - } - - if (pthread_spin_lock (s) != 0) - { - puts ("spin_lock failed"); - return 1; - } - - err = pthread_spin_trylock (s); - if (err == 0) - { - puts ("1st spin_trylock succeeded"); - return 1; - } - else if (err != EBUSY) - { - puts ("1st spin_trylock didn't return EBUSY"); - return 1; - } - - err = pthread_spin_unlock (s); - if (err != 0) - { - puts ("parent: spin_unlock failed"); - return 1; - } - - err = pthread_spin_trylock (s); - if (err != 0) - { - puts ("2nd spin_trylock failed"); - return 1; - } - - *p = 0; - - puts ("going to fork now"); - pid = fork (); - if (pid == -1) - { - puts ("fork failed"); - return 1; - } - else if (pid == 0) - { - /* Play some lock ping-pong. It's our turn to unlock first. */ - if ((*p)++ != 0) - { - puts ("child: *p != 0"); - return 1; - } - - if (pthread_spin_unlock (s) != 0) - { - puts ("child: 1st spin_unlock failed"); - return 1; - } - - puts ("child done"); - } - else - { - if (pthread_spin_lock (s) != 0) - { - puts ("parent: 2nd spin_lock failed"); - return 1; - } - - puts ("waiting for child"); - - waitpid (pid, NULL, 0); - - puts ("parent done"); - } - - return 0; -} - -#define TEST_FUNCTION do_test () -#include "../test-skeleton.c" |