libc/src/threads/linux/cnd_signal.cpp

   1 //===-- Linux implementation of the cnd_signal function -------------------===//
   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/threads/cnd_signal.h"
  10 #include "src/__support/common.h"
  11 #include "src/__support/macros/config.h"
  12 #include "src/__support/threads/CndVar.h"
  13
  14 #include <threads.h> // cnd_t, thrd_error, thrd_success
  15
  16 namespace LIBC_NAMESPACE_DECL {
  17
  18 static_assert(sizeof(CndVar) == sizeof(cnd_t));
  19
  20 LLVM_LIBC_FUNCTION(int, cnd_signal, (cnd_t * cond)) {
  21   CndVar *cndvar = reinterpret_cast<CndVar *>(cond);
  22   cndvar->notify_one();
  23   return thrd_success;
  24 }
  25
  26 } // namespace LIBC_NAMESPACE_DECL