diff options
author | Chris Metcalf <cmetcalf@tilera.com> | 2014-02-10 10:54:47 -0500 |
---|---|---|
committer | Chris Metcalf <cmetcalf@tilera.com> | 2014-02-10 11:04:39 -0500 |
commit | 4372980f5881e7d537a52e3c49588ce116088061 (patch) | |
tree | 138fbc88313c8cb0cabee393e0c08afd67dac6f1 /sysdeps/unix/sysv/linux/generic/pause.c | |
parent | a1ffb40e32741f992c743e7b16c061fefa3747ac (diff) | |
download | glibc-4372980f5881e7d537a52e3c49588ce116088061.tar.gz |
Move tilegx, tilepro, and linux-generic from ports to libc.
I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy,
along with the linux-generic ports infrastructure. Beyond the README
update, the move was just
git mv ports/sysdeps/tile sysdeps/tile
git mv ports/sysdeps/unix/sysv/linux/tile \
sysdeps/unix/sysv/linux/tile
git mv ports/sysdeps/unix/sysv/linux/generic \
sysdeps/unix/sysv/linux/generic
I updated the relevant ChangeLogs along the lines of the ARM move
in commit c6bfe5c4d75 and tested the 64-bit tilegx build to confirm that
there were no changes in "objdump -dr" output in the shared objects.
Diffstat (limited to 'sysdeps/unix/sysv/linux/generic/pause.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/generic/pause.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/generic/pause.c b/sysdeps/unix/sysv/linux/generic/pause.c new file mode 100644 index 0000000000..3804ce6e99 --- /dev/null +++ b/sysdeps/unix/sysv/linux/generic/pause.c @@ -0,0 +1,63 @@ +/* Copyright (C) 2011-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. + + 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 <signal.h> +#include <unistd.h> +#include <sysdep-cancel.h> + +/* Suspend the process until a signal arrives. + This always returns -1 and sets errno to EINTR. */ + +static int +__syscall_pause (void) +{ + sigset_t set; + + int rc = + INLINE_SYSCALL (rt_sigprocmask, 4, SIG_BLOCK, NULL, &set, _NSIG / 8); + if (rc == 0) + rc = INLINE_SYSCALL (rt_sigsuspend, 2, &set, _NSIG / 8); + + return rc; +} + +int +__libc_pause (void) +{ + if (SINGLE_THREAD_P) + return __syscall_pause (); + + int oldtype = LIBC_CANCEL_ASYNC (); + + int result = __syscall_pause (); + + LIBC_CANCEL_RESET (oldtype); + + return result; +} +weak_alias (__libc_pause, pause) + +#ifndef NO_CANCELLATION +# include <not-cancel.h> + +int +__pause_nocancel (void) +{ + return __syscall_pause (); +} +#endif |