libc/src/pthread/pthread_equal.cpp

   1 //===-- Implementation of the pthread_equal 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 "pthread_equal.h"
  10
  11 #include "src/__support/common.h"
  12 #include "src/__support/macros/config.h"
  13 #include "src/__support/threads/thread.h"
  14
  15 #include <pthread.h> // For pthread_* type definitions.
  16
  17 namespace LIBC_NAMESPACE_DECL {
  18
  19 static_assert(sizeof(pthread_t) == sizeof(LIBC_NAMESPACE::Thread),
  20               "Mismatch between pthread_t and internal Thread.");
  21
  22 LLVM_LIBC_FUNCTION(int, pthread_equal, (pthread_t lhs, pthread_t rhs)) {
  23   auto *lhs_internal = reinterpret_cast<Thread *>(&lhs);
  24   auto *rhs_internal = reinterpret_cast<Thread *>(&rhs);
  25   return *lhs_internal == *rhs_internal;
  26 }
  27
  28 } // namespace LIBC_NAMESPACE_DECL