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author | Roland McGrath <roland@hack.frob.com> | 2014-07-07 09:28:38 -0700 |
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committer | Roland McGrath <roland@hack.frob.com> | 2014-07-07 09:28:38 -0700 |
commit | 08192659bbeae149e7cb1f4c43547257f7099bb0 (patch) | |
tree | 9f602a4e9f0aefdb06bc15a76be46e958e91a58f /sysdeps/unix/sysv/linux/raise.c | |
parent | Add comment for MEMCPY_OK_FOR_FWD_MEMMOVE (diff) | |
download | glibc-08192659bbeae149e7cb1f4c43547257f7099bb0.tar.gz glibc-08192659bbeae149e7cb1f4c43547257f7099bb0.tar.bz2 glibc-08192659bbeae149e7cb1f4c43547257f7099bb0.zip |
Get rid of nptl/sysdeps/ entirely!
Diffstat (limited to 'sysdeps/unix/sysv/linux/raise.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/raise.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/raise.c b/sysdeps/unix/sysv/linux/raise.c new file mode 100644 index 0000000000..4106e8c458 --- /dev/null +++ b/sysdeps/unix/sysv/linux/raise.c @@ -0,0 +1,58 @@ +/* Copyright (C) 2002-2014 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 <limits.h> +#include <signal.h> +#include <sysdep.h> +#include <nptl/pthreadP.h> + + +int +raise (sig) + int sig; +{ + struct pthread *pd = THREAD_SELF; + pid_t pid = THREAD_GETMEM (pd, pid); + pid_t selftid = THREAD_GETMEM (pd, tid); + if (selftid == 0) + { + /* This system call is not supposed to fail. */ +#ifdef INTERNAL_SYSCALL + INTERNAL_SYSCALL_DECL (err); + selftid = INTERNAL_SYSCALL (gettid, err, 0); +#else + selftid = INLINE_SYSCALL (gettid, 0); +#endif + THREAD_SETMEM (pd, tid, selftid); + + /* We do not set the PID field in the TID here since we might be + called from a signal handler while the thread executes fork. */ + pid = selftid; + } + else + /* raise is an async-safe function. It could be called while the + fork/vfork function temporarily invalidated the PID field. Adjust for + that. */ + if (__glibc_unlikely (pid <= 0)) + pid = (pid & INT_MAX) == 0 ? selftid : -pid; + + return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig); +} +libc_hidden_def (raise) +weak_alias (raise, gsignal) |