diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/pt-raise.c')
-rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/pt-raise.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/pt-raise.c b/libpthread/nptl/sysdeps/unix/sysv/linux/pt-raise.c new file mode 100644 index 000000000..d256ebcb0 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/pt-raise.c @@ -0,0 +1,52 @@ +/* Copyright (C) 2002, 2003 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <signal.h> +#include <sysdep.h> +#include <tls.h> +#include <bits/kernel-features.h> + + +int +raise ( + int sig) +{ +#if __ASSUME_TGKILL || defined __NR_tgkill + /* raise is an async-safe function. It could be called while the + fork function temporarily invalidated the PID field. Adjust for + that. */ + pid_t pid = THREAD_GETMEM (THREAD_SELF, pid); + if (__builtin_expect (pid < 0, 0)) + pid = -pid; +#endif + +#if __ASSUME_TGKILL + return INLINE_SYSCALL (tgkill, 3, pid, THREAD_GETMEM (THREAD_SELF, tid), + sig); +#else +# ifdef __NR_tgkill + int res = INLINE_SYSCALL (tgkill, 3, pid, THREAD_GETMEM (THREAD_SELF, tid), + sig); + if (res != -1 || errno != ENOSYS) + return res; +# endif + return INLINE_SYSCALL (tkill, 2, THREAD_GETMEM (THREAD_SELF, tid), sig); +#endif +} |