1//===-- Implementation of the pthread_attr_setstack -----------------===//
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_setstack.h"
10#include "pthread_attr_setstacksize.h"
11
12#include "src/__support/common.h"
13#include "src/__support/libc_errno.h"
14#include "src/__support/macros/config.h"
15#include "src/__support/threads/thread.h" // For STACK_ALIGNMENT
16
17#include <pthread.h>
18#include <stdint.h>
19
20namespace LIBC_NAMESPACE_DECL {
21
22LLVM_LIBC_FUNCTION(int, pthread_attr_setstack,
23 (pthread_attr_t *__restrict attr, void *stack,
24 size_t stacksize)) {
25 uintptr_t stackaddr = reinterpret_cast<uintptr_t>(stack);
26 // TODO: Do we need to check for overflow on stackaddr + stacksize?
27 if ((stackaddr % STACK_ALIGNMENT != 0) ||
28 ((stackaddr + stacksize) % STACK_ALIGNMENT != 0))
29 return EINVAL;
30
31 if (stacksize < PTHREAD_STACK_MIN)
32 return EINVAL;
33
34 attr->__stack = stack;
35 attr->__stacksize = stacksize;
36 return 0;
37}
38
39} // namespace LIBC_NAMESPACE_DECL
40

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source code of libc/src/pthread/pthread_attr_setstack.cpp