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Current Path: /usr/src/lib/libthr/thread

📁 ..
📄 Makefile.inc(976 B)
📄 thr_affinity.c(2.83 KB)
📄 thr_attr.c(18.69 KB)
📄 thr_autoinit.c(2.73 KB)
📄 thr_barrier.c(4.73 KB)
📄 thr_barrierattr.c(2.86 KB)
📄 thr_cancel.c(4.75 KB)
📄 thr_clean.c(3.45 KB)
📄 thr_concurrency.c(2.33 KB)
📄 thr_cond.c(14.19 KB)
📄 thr_condattr.c(3.75 KB)
📄 thr_create.c(8.23 KB)
📄 thr_ctrdtr.c(1.86 KB)
📄 thr_detach.c(2.3 KB)
📄 thr_equal.c(1.92 KB)
📄 thr_event.c(2.21 KB)
📄 thr_exit.c(8.52 KB)
📄 thr_fork.c(8.66 KB)
📄 thr_getcpuclockid.c(1.85 KB)
📄 thr_getprio.c(2.11 KB)
📄 thr_getschedparam.c(2.63 KB)
📄 thr_getthreadid_np.c(1.87 KB)
📄 thr_info.c(4.19 KB)
📄 thr_init.c(16.94 KB)
📄 thr_join.c(4.76 KB)
📄 thr_kern.c(5 KB)
📄 thr_kill.c(2.55 KB)
📄 thr_list.c(10 KB)
📄 thr_main_np.c(1.88 KB)
📄 thr_malloc.c(3.63 KB)
📄 thr_multi_np.c(1.96 KB)
📄 thr_mutex.c(30.24 KB)
📄 thr_mutexattr.c(8.28 KB)
📄 thr_once.c(3.32 KB)
📄 thr_printf.c(3.52 KB)
📄 thr_private.h(31.94 KB)
📄 thr_pshared.c(6.3 KB)
📄 thr_pspinlock.c(4.18 KB)
📄 thr_resume_np.c(3.14 KB)
📄 thr_rtld.c(6.07 KB)
📄 thr_rwlock.c(10.17 KB)
📄 thr_rwlockattr.c(2.84 KB)
📄 thr_self.c(1.93 KB)
📄 thr_sem.c(3.71 KB)
📄 thr_setprio.c(2.42 KB)
📄 thr_setschedparam.c(2.89 KB)
📄 thr_sig.c(19.89 KB)
📄 thr_single_np.c(1.97 KB)
📄 thr_sleepq.c(4.46 KB)
📄 thr_spec.c(7.03 KB)
📄 thr_spinlock.c(3.7 KB)
📄 thr_stack.c(10.63 KB)
📄 thr_suspend_np.c(5.4 KB)
📄 thr_switch_np.c(2.28 KB)
📄 thr_symbols.c(2.75 KB)
📄 thr_syscalls.c(16.69 KB)
📄 thr_umtx.c(8.8 KB)
📄 thr_umtx.h(8.02 KB)
📄 thr_yield.c(1.83 KB)

Editing: thr_malloc.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2019 The FreeBSD Foundation
 * All rights reserved.
 *
 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
 * under sponsorship from the FreeBSD Foundation.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/types.h>
#include <sys/mman.h>
#include <rtld_malloc.h>
#include "thr_private.h"

int npagesizes;
size_t *pagesizes;
static size_t pagesizes_d[2];
static struct umutex thr_malloc_umtx;
static u_int thr_malloc_umtx_level;

void
__thr_malloc_init(void)
{

if (npagesizes != 0)
		return;
	npagesizes = getpagesizes(pagesizes_d, nitems(pagesizes_d));
	if (npagesizes == -1) {
		npagesizes = 1;
		pagesizes_d[0] = PAGE_SIZE;
	}
	pagesizes = pagesizes_d;
	_thr_umutex_init(&thr_malloc_umtx);
}

static void
thr_malloc_lock(struct pthread *curthread)
{
	uint32_t curtid;

if (curthread == NULL)
		return;
	curthread->locklevel++;
	curtid = TID(curthread);
	if ((uint32_t)thr_malloc_umtx.m_owner == curtid)
		thr_malloc_umtx_level++;
	else
		_thr_umutex_lock(&thr_malloc_umtx, curtid);
}

static void
thr_malloc_unlock(struct pthread *curthread)
{

if (curthread == NULL)
		return;
	if (thr_malloc_umtx_level > 0)
		thr_malloc_umtx_level--;
	else
		_thr_umutex_unlock(&thr_malloc_umtx, TID(curthread));
	curthread->locklevel--;
	_thr_ast(curthread);
}

void *
__thr_calloc(size_t num, size_t size)
{
	struct pthread *curthread;
	void *res;

curthread = _get_curthread();
	thr_malloc_lock(curthread);
	res = __crt_calloc(num, size);
	thr_malloc_unlock(curthread);
	return (res);
}

void
__thr_free(void *cp)
{
	struct pthread *curthread;

curthread = _get_curthread();
	thr_malloc_lock(curthread);
	__crt_free(cp);
	thr_malloc_unlock(curthread);
}

void *
__thr_malloc(size_t nbytes)
{
	struct pthread *curthread;
	void *res;

curthread = _get_curthread();
	thr_malloc_lock(curthread);
	res = __crt_malloc(nbytes);
	thr_malloc_unlock(curthread);
	return (res);
}

void *
__thr_realloc(void *cp, size_t nbytes)
{
	struct pthread *curthread;
	void *res;

curthread = _get_curthread();
	thr_malloc_lock(curthread);
	res = __crt_realloc(cp, nbytes);
	thr_malloc_unlock(curthread);
	return (res);
}

void
__thr_malloc_prefork(struct pthread *curthread)
{

_thr_umutex_lock(&thr_malloc_umtx, TID(curthread));
}

void
__thr_malloc_postfork(struct pthread *curthread)
{

_thr_umutex_unlock(&thr_malloc_umtx, TID(curthread));
}

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Editing: thr_malloc.c

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