mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 03:27:39 +00:00
0b3c81dd4e
This change makes fork() go nearly as fast as sys_fork() on UNIX. As for Windows this change shaves about 4-5ms off fork() + wait() latency. This is accomplished by using WriteProcessMemory() from the parent process to setup the address space of a suspended process; it is better than a pipe
72 lines
3.5 KiB
C
72 lines
3.5 KiB
C
/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set noet ft=c ts=8 sw=8 fenc=utf-8 :vi │
|
|
╚──────────────────────────────────────────────────────────────────────────────╝
|
|
│ │
|
|
│ The author of this software is David M. Gay. │
|
|
│ Please send bug reports to David M. Gay <dmg@acm.org> │
|
|
│ or Justine Tunney <jtunney@gmail.com> │
|
|
│ │
|
|
│ Copyright (C) 1998, 1999 by Lucent Technologies │
|
|
│ All Rights Reserved │
|
|
│ │
|
|
│ Permission to use, copy, modify, and distribute this software and │
|
|
│ its documentation for any purpose and without fee is hereby │
|
|
│ granted, provided that the above copyright notice appear in all │
|
|
│ copies and that both that the copyright notice and this │
|
|
│ permission notice and warranty disclaimer appear in supporting │
|
|
│ documentation, and that the name of Lucent or any of its entities │
|
|
│ not be used in advertising or publicity pertaining to │
|
|
│ distribution of the software without specific, written prior │
|
|
│ permission. │
|
|
│ │
|
|
│ LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, │
|
|
│ INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. │
|
|
│ IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY │
|
|
│ SPECIAL, 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/thread/posixthread.internal.h"
|
|
#include "third_party/gdtoa/lock.h"
|
|
|
|
static pthread_mutex_t __gdtoa_lock_obj = PTHREAD_MUTEX_INITIALIZER;
|
|
static pthread_mutex_t __gdtoa_lock1_obj = PTHREAD_MUTEX_INITIALIZER;
|
|
|
|
void
|
|
__gdtoa_lock(void)
|
|
{
|
|
_pthread_mutex_lock(&__gdtoa_lock_obj);
|
|
}
|
|
|
|
void
|
|
__gdtoa_unlock(void)
|
|
{
|
|
_pthread_mutex_unlock(&__gdtoa_lock_obj);
|
|
}
|
|
|
|
void
|
|
__gdtoa_wipe(void)
|
|
{
|
|
_pthread_mutex_wipe_np(&__gdtoa_lock_obj);
|
|
}
|
|
|
|
void
|
|
__gdtoa_lock1(void)
|
|
{
|
|
_pthread_mutex_lock(&__gdtoa_lock1_obj);
|
|
}
|
|
|
|
void
|
|
__gdtoa_unlock1(void)
|
|
{
|
|
_pthread_mutex_unlock(&__gdtoa_lock1_obj);
|
|
}
|
|
|
|
void
|
|
__gdtoa_wipe1(void)
|
|
{
|
|
_pthread_mutex_wipe_np(&__gdtoa_lock1_obj);
|
|
}
|