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 | |
20 | namespace LIBC_NAMESPACE_DECL { |
21 | |
22 | LLVM_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 |