libc/src/pthread/pthread_attr_getstack.cpp

   1 //===-- Implementation of the pthread_attr_getstack -----------------===//
   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_attr_getstack.h"
  10 #include "pthread_attr_getstacksize.h"
  11
  12 #include "src/__support/common.h"
  13 #include "src/__support/macros/optimization.h"
  14
  15 #include <pthread.h>
  16
  17 namespace LIBC_NAMESPACE {
  18
  19 LLVM_LIBC_FUNCTION(int, pthread_attr_getstack,
  20                    (const pthread_attr_t *__restrict attr,
  21                     void **__restrict stack, size_t *__restrict stacksize)) {
  22   // As of writing this `pthread_attr_getstacksize` can never fail.
  23   int result = LIBC_NAMESPACE::pthread_attr_getstacksize(attr, stacksize);
  24   if (LIBC_UNLIKELY(result != 0))
  25     return result;
  26   *stack = attr->__stack;
  27   return 0;
  28 }
  29
  30 } // namespace LIBC_NAMESPACE