mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 03:27:39 +00:00
e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
80 lines
4.1 KiB
C
80 lines
4.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2022 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/assert.h"
|
|
#include "libc/calls/struct/rlimit.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/intrin/atomic.h"
|
|
#include "libc/limits.h"
|
|
#include "libc/macros.internal.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/runtime/stack.h"
|
|
#include "libc/str/str.h"
|
|
#include "libc/sysv/consts/auxv.h"
|
|
#include "libc/sysv/consts/rlim.h"
|
|
#include "libc/sysv/consts/rlimit.h"
|
|
#include "libc/thread/posixthread.internal.h"
|
|
#include "libc/thread/thread.h"
|
|
|
|
/**
|
|
* Gets thread attributes.
|
|
*
|
|
* These attributes are copied from the ones supplied when
|
|
* pthread_create() was called. However this function supplies
|
|
* additional runtime information too:
|
|
*
|
|
* 1. The detached state. You can use pthread_attr_getdetachstate() on
|
|
* the `attr` result to see, for example, if a thread detached itself
|
|
* or some other thread detached it, after it was spawned.
|
|
*
|
|
* 2. The thread's stack. You can use pthread_attr_getstack() to see the
|
|
* address and size of the stack that was allocated by cosmo for your
|
|
* thread. This is useful for knowing where the stack is. It can also
|
|
* be useful If you explicitly configured a stack too, since we might
|
|
* have needed to slightly tune the address and size to meet platform
|
|
* requirements.
|
|
*
|
|
* 3. You can view changes pthread_create() may have made to the stack
|
|
* guard size by calling pthread_attr_getguardsize() on `attr`
|
|
*
|
|
* @param attr is output argument that receives attributes, which should
|
|
* find its way to pthread_attr_destroy() when it's done being used
|
|
* @return 0 on success, or errno on error
|
|
* @raise ENOMEM is listed as a possible result by LSB 5.0
|
|
*/
|
|
errno_t pthread_getattr_np(pthread_t thread, pthread_attr_t *attr) {
|
|
struct PosixThread *pt = (struct PosixThread *)thread;
|
|
memcpy(attr, &pt->pt_attr, sizeof(pt->pt_attr));
|
|
switch (atomic_load_explicit(&pt->pt_status, memory_order_relaxed)) {
|
|
case kPosixThreadJoinable:
|
|
case kPosixThreadTerminated:
|
|
attr->__detachstate = PTHREAD_CREATE_JOINABLE;
|
|
break;
|
|
case kPosixThreadDetached:
|
|
case kPosixThreadZombie:
|
|
attr->__detachstate = PTHREAD_CREATE_DETACHED;
|
|
break;
|
|
default:
|
|
__builtin_unreachable();
|
|
}
|
|
if (!attr->__stacksize && (pt->pt_flags & PT_STATIC)) {
|
|
__get_main_stack(&attr->__stackaddr, &attr->__stacksize,
|
|
&attr->__guardsize);
|
|
}
|
|
return 0;
|
|
}
|