mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 04:31:03 +00:00
5a82c74822
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
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/* Open File Description Locks Usage Example
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <https://www.gnu.org/licenses/>.
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <pthread.h>
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#define FILENAME "/tmp/foo"
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#define NUM_THREADS 3
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#define ITERATIONS 5
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void *
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thread_start (void *arg)
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{
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int i, fd, len;
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long tid = (long) arg;
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char buf[256];
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struct flock lck = {
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.l_whence = SEEK_SET,
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.l_start = 0,
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.l_len = 1,
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};
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fd = open ("/tmp/foo", O_RDWR | O_CREAT, 0666);
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for (i = 0; i < ITERATIONS; i++)
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{
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lck.l_type = F_WRLCK;
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fcntl (fd, F_OFD_SETLKW, &lck);
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len = sprintf (buf, "%d: tid=%ld fd=%d\n", i, tid, fd);
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lseek (fd, 0, SEEK_END);
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write (fd, buf, len);
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fsync (fd);
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lck.l_type = F_UNLCK;
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fcntl (fd, F_OFD_SETLK, &lck);
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/* sleep to ensure lock is yielded to another thread */
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usleep (1);
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}
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pthread_exit (NULL);
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}
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int
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main (int argc, char **argv)
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{
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long i;
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pthread_t threads[NUM_THREADS];
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truncate (FILENAME, 0);
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for (i = 0; i < NUM_THREADS; i++)
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pthread_create (&threads[i], NULL, thread_start, (void *) i);
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pthread_exit (NULL);
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return 0;
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}
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