mirror of
https://github.com/jart/cosmopolitan.git
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a0b39f886c
* Thread creation * Proper thread creation and exit * Join/Detach protocol * Added semaphore with futex (hopefully fast)
67 lines
3 KiB
C
67 lines
3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/thread/attr.h"
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#include "libc/errno.h"
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#define MIN_STACKSIZE (8*PAGESIZE)
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#define MIN_GUARDSIZE PAGESIZE
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// CTOR/DTOR
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int cthread_attr_init(cthread_attr_t* attr) {
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attr->stacksize = 1024*PAGESIZE; // 4 MiB
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attr->guardsize = 16*PAGESIZE; // 64 KiB
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attr->mode = CTHREAD_CREATE_JOINABLE;
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return 0;
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}
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int cthread_attr_destroy(cthread_attr_t* attr) {
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(void)attr;
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return 0;
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}
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// stacksize
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int cthread_attr_setstacksize(cthread_attr_t* attr, size_t size) {
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if (size & (PAGESIZE-1)) return EINVAL;
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if (size < MIN_STACKSIZE) return EINVAL;
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attr->stacksize = size;
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return 0;
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}
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size_t cthread_attr_getstacksize(const cthread_attr_t* attr) {
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return attr->stacksize;
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}
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// guardsize
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int cthread_attr_setguardsize(cthread_attr_t* attr, size_t size) {
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if (size & (PAGESIZE-1)) return EINVAL;
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if (size < MIN_GUARDSIZE) return EINVAL;
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attr->guardsize = size;
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return 0;
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}
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size_t cthread_attr_getguardsize(const cthread_attr_t* attr) {
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return attr->guardsize;
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}
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// detachstate
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int cthread_attr_setdetachstate(cthread_attr_t* attr, int mode) {
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if (mode & ~(CTHREAD_CREATE_JOINABLE | CTHREAD_CREATE_DETACHED)) return EINVAL;
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attr->mode = mode;
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return 0;
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}
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int cthread_attr_getdetachstate(const cthread_attr_t* attr) {
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return attr->mode;
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}
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