libc/src/signal/linux/raise.cpp

   1 //===-- Linux implementation of signal ------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/signal/raise.h"
  10 #include "src/signal/linux/signal_utils.h"
  11
  12 #include "src/__support/common.h"
  13
  14 namespace LIBC_NAMESPACE {
  15
  16 LLVM_LIBC_FUNCTION(int, raise, (int sig)) {
  17   ::sigset_t sigset;
  18   block_all_signals(sigset);
  19   long pid = LIBC_NAMESPACE::syscall_impl<long>(SYS_getpid);
  20   long tid = LIBC_NAMESPACE::syscall_impl<long>(SYS_gettid);
  21   int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_tgkill, pid, tid, sig);
  22   restore_signals(sigset);
  23   return ret;
  24 }
  25
  26 } // namespace LIBC_NAMESPACE