glibc/nptl/tst-barrier2.c
Paul Eggert 5a82c74822 Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:

sed -ri '
  s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
  s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
  $(find $(git ls-files) -prune -type f \
      ! -name '*.po' \
      ! -name 'ChangeLog*' \
      ! -path COPYING ! -path COPYING.LIB \
      ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
      ! -path manual/texinfo.tex ! -path scripts/config.guess \
      ! -path scripts/config.sub ! -path scripts/install-sh \
      ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
      ! -path INSTALL ! -path  locale/programs/charmap-kw.h \
      ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
      ! '(' -name configure \
            -execdir test -f configure.ac -o -f configure.in ';' ')' \
      ! '(' -name preconfigure \
            -execdir test -f preconfigure.ac ';' ')' \
      -print)

and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:

  chmod a+x sysdeps/unix/sysv/linux/riscv/configure
  # Omit irrelevant whitespace and comment-only changes,
  # perhaps from a slightly-different Autoconf version.
  git checkout -f \
    sysdeps/csky/configure \
    sysdeps/hppa/configure \
    sysdeps/riscv/configure \
    sysdeps/unix/sysv/linux/csky/configure
  # Omit changes that caused a pre-commit check to fail like this:
  # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
  git checkout -f \
    sysdeps/powerpc/powerpc64/ppc-mcount.S \
    sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
  # Omit change that caused a pre-commit check to fail like this:
  # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
  git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 02:43:31 -07:00

186 lines
4.1 KiB
C

/* Tests process-shared barriers.
Copyright (C) 2002-2019 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
<https://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-barrier2.XXXXXX";
char data[ps];
void *mem;
int fd;
pthread_barrier_t *b;
pthread_barrierattr_t a;
pid_t pid;
int serials = 0;
int cnt;
int status;
int p;
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;
}
b = (pthread_barrier_t *) (((uintptr_t) mem + __alignof (pthread_barrier_t))
& ~(__alignof (pthread_barrier_t) - 1));
if (pthread_barrierattr_init (&a) != 0)
{
puts ("barrierattr_init failed");
return 1;
}
if (pthread_barrierattr_getpshared (&a, &p) != 0)
{
puts ("1st barrierattr_getpshared failed");
return 1;
}
if (p != PTHREAD_PROCESS_PRIVATE)
{
puts ("default pshared value wrong");
return 1;
}
if (pthread_barrierattr_setpshared (&a, PTHREAD_PROCESS_SHARED) != 0)
{
puts ("barrierattr_setpshared failed");
return 1;
}
if (pthread_barrierattr_getpshared (&a, &p) != 0)
{
puts ("2nd barrierattr_getpshared failed");
return 1;
}
if (p != PTHREAD_PROCESS_SHARED)
{
puts ("pshared value after setpshared call wrong");
return 1;
}
if (pthread_barrier_init (b, &a, 2) != 0)
{
puts ("barrier_init failed");
return 1;
}
if (pthread_barrierattr_destroy (&a) != 0)
{
puts ("barrierattr_destroy failed");
return 1;
}
puts ("going to fork now");
pid = fork ();
if (pid == -1)
{
puts ("fork failed");
return 1;
}
/* Just to be sure we don't hang forever. */
alarm (4);
#define N 30
for (cnt = 0; cnt < N; ++cnt)
{
int e;
e = pthread_barrier_wait (b);
if (e == PTHREAD_BARRIER_SERIAL_THREAD)
++serials;
else if (e != 0)
{
printf ("%s: barrier_wait returned value %d != 0 and PTHREAD_BARRIER_SERIAL_THREAD\n",
pid == 0 ? "child" : "parent", e);
return 1;
}
}
alarm (0);
printf ("%s: was %d times the serial thread\n",
pid == 0 ? "child" : "parent", serials);
if (pid == 0)
/* The child. Pass the number of times we had the serializing
thread back to the parent. */
exit (serials);
if (waitpid (pid, &status, 0) != pid)
{
puts ("waitpid failed");
return 1;
}
if (!WIFEXITED (status))
{
puts ("child exited abnormally");
return 1;
}
if (WEXITSTATUS (status) + serials != N)
{
printf ("total number of serials is %d, expected %d\n",
WEXITSTATUS (status) + serials, N);
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"