libc/src/threads/thrd_equal.cpp

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