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author | Ulrich Drepper <drepper@redhat.com> | 2002-12-14 19:49:13 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2002-12-14 19:49:13 +0000 |
commit | 9d263d72848fb561e104a21da3ffccf791078f2a (patch) | |
tree | a4004b7cacfaf715a38199cdbb0c4114677c5508 /nptl/sysdeps/unix/sysv/linux/sigpause.c | |
parent | 36b3f3eb117f2923b1080a22f748e4a6cd63de73 (diff) | |
download | glibc-9d263d72848fb561e104a21da3ffccf791078f2a.tar.gz glibc-9d263d72848fb561e104a21da3ffccf791078f2a.tar.xz glibc-9d263d72848fb561e104a21da3ffccf791078f2a.zip |
Update.
2002-12-14 Jakub Jelinek <jakub@redhat.com> * dirent/bug-readdir1.c: Include unistd.h.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/sigpause.c')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/sigpause.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/sigpause.c b/nptl/sysdeps/unix/sysv/linux/sigpause.c new file mode 100644 index 0000000000..bd7756c89b --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/sigpause.c @@ -0,0 +1,100 @@ +/* Copyright (C) 1991,92,94-98,2000,02 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <signal.h> +#include <stddef.h> /* For NULL. */ +#include <nptl/pthreadP.h> +#include <tls.h> + +#include <sigset-cvt-mask.h> + +/* Set the mask of blocked signals to MASK, + wait for a signal to arrive, and then restore the mask. */ +int +__sigpause (int sig_or_mask, int is_sig) +{ + sigset_t set; + + if (is_sig != 0) + { + /* The modern X/Open implementation is requested. */ + if (__sigprocmask (0, NULL, &set) < 0 + /* Yes, we call `sigdelset' and not `__sigdelset'. */ + || __sigdelset (&set, sig_or_mask) < 0) + return -1; + } + else if (sigset_set_old_mask (&set, sig_or_mask) < 0) + return -1; + + return __sigsuspend (&set); +} +libc_hidden_def (__sigpause) + +/* We have to provide a default version of this function since the + standards demand it. The version which is a bit more reasonable is + the BSD version. So make this the default. */ +int +__attribute__ ((weak)) +__default_sigpause (int mask) +{ +#ifndef NOT_IN_libc + if (__builtin_expect (THREAD_GETMEM (THREAD_SELF, + header.data.multiple_threads) == 0, 1)) + return __sigpause (mask, 0); + + int oldtype = LIBC_CANCEL_ASYNC (); +#endif + + int result = __sigpause (mask, 0); + +#ifndef NOT_IN_libc + LIBC_CANCEL_RESET (oldtype); +#endif + + return result; +} +#undef sigpause +weak_alias (__default_sigpause, sigpause) +strong_alias (__default_sigpause, __libc_sigpause) + + +/* We have to provide a default version of this function since the + standards demand it. The version which is a bit more reasonable is + the BSD version. So make this the default. */ +int +__attribute__ ((weak)) +__xpg_sigpause (int sig) +{ +#ifndef NOT_IN_libc + if (__builtin_expect (THREAD_GETMEM (THREAD_SELF, + header.data.multiple_threads) == 0, 1)) + return __sigpause (sig, 1); + + int oldtype = LIBC_CANCEL_ASYNC (); +#endif + + int result = __sigpause (sig, 1); + +#ifndef NOT_IN_libc + LIBC_CANCEL_RESET (oldtype); +#endif + + return result; +} +strong_alias (__xpg_sigpause, __libc___xpg_sigpause) |