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/*-
* Copyright (c) 2002 Poul-Henning Kamp
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by Poul-Henning Kamp
* and NAI Labs, the Security Research Division of Network Associates, Inc.
* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
* DARPA CHATS research program.
*
* 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.
* 3. The names of the authors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* 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.
*
* $FreeBSD$
*/
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <signal.h>
#include <sched.h>
#include <err.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <geom/geom.h>
#include <geom/geom_int.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <machine/atomic.h>
#include <pthread.h>
#define NTHREAD 30
static struct thread thr[NTHREAD];
static int weredone;
int g_debugflags;
int bootverbose = 1;
void
done(void)
{
rattle();
weredone = 1;
exit(0);
}
void
secrethandshake()
{
int i;
if (weredone)
exit(0);
for (i = 0; i < NTHREAD; i++) {
if (thr[i].pid == 0)
continue;
if (kill(thr[i].pid, 0)) {
printf("\n\nMissing process for thread %d (\"%s\")\n",
i, thr[i].name);
goto scram;
}
}
return;
scram:
for (i = 0; i < NTHREAD; i++) {
if (thr[i].pid == 0)
continue;
if (thr[i].pid == getpid())
continue;
kill(thr[i].pid, 9);
}
exit(9);
}
void
biodone(struct bio *bp)
{
bp->bio_flags |= BIO_DONE;
if (bp->bio_done != NULL)
bp->bio_done(bp);
}
int
biowait(struct bio *bp, const char *wchan __unused)
{
while ((bp->bio_flags & BIO_DONE) == 0)
usleep(10000);
if (!(bp->bio_flags & BIO_ERROR))
return (0);
if (bp->bio_error)
return (bp->bio_error);
return (EIO);
}
void
wakeup(void *chan)
{
if (chan == &g_wait_event)
pthread_cond_signal(&ptc_event);
else if (chan == &g_wait_up)
pthread_cond_signal(&ptc_up);
else if (chan == &g_wait_down)
pthread_cond_signal(&ptc_down);
else
return;
}
int hz;
int
tsleep(void *chan __unused, int pri __unused, const char *wmesg __unused, int timo)
{
usleep(timo);
return (0);
}
void
rattle()
{
int i;
pthread_yield();
for (;;) {
i = pthread_mutex_trylock(&ptm_up);
if (i != EBUSY) {
i = pthread_mutex_trylock(&ptm_down);
if (i != EBUSY) {
i = pthread_mutex_trylock(&ptm_event);
if (i != EBUSY)
break;
pthread_mutex_unlock(&ptm_down);
}
pthread_mutex_unlock(&ptm_up);
}
usleep(100000);
}
pthread_mutex_unlock(&ptm_event);
pthread_mutex_unlock(&ptm_down);
pthread_mutex_unlock(&ptm_up);
return;
}
void
new_thread(void *(*func)(void *arg), const char *name)
{
struct thread *tp;
static int nextt;
int error;
tp = thr + nextt++;
error = pthread_create(&tp->tid, NULL, func, tp);
if (error)
err(1, "pthread_create(%s)", name);
tp->name = strdup(name);
printf("New Thread %d %s %p %d\n", tp - thr, name, tp, tp->pid);
}
#define FASCIST 0
void *
g_malloc(int size, int flags)
{
void *p;
#if FASCIST
p = malloc(4096);
printf("Malloc %p \n", p);
#else
p = malloc(size);
#endif
if (flags & M_ZERO)
memset(p, 0, size);
else
memset(p, 0xd0, size);
return (p);
}
void
g_free(void *ptr)
{
secrethandshake();
#if FASCIST
printf("Free %p \n", ptr);
munmap(ptr, 4096);
#else
free(ptr);
#endif
}
static pthread_mutex_t pt_topology;
void
g_init(void)
{
pthread_mutex_init(&pt_topology, NULL);
g_io_init();
g_event_init();
}
void
g_topology_lock()
{
pthread_mutex_lock(&pt_topology);
}
void
g_topology_unlock()
{
pthread_mutex_unlock(&pt_topology);
}
void
g_topology_assert()
{
#if 0
if (topology_lock == getpid())
return;
KASSERT(1 == 0, ("Lacking topology_lock"));
#endif
}
void
mtx_init(struct mtx *mp, const char *bla __unused, const char *yak __unused, int foo __unused)
{
pthread_mutex_init((pthread_mutex_t *)&mp->mtx_object, NULL);
}
void
mtx_destroy(struct mtx *mp)
{
pthread_mutex_destroy((pthread_mutex_t *)&mp->mtx_object);
}
void
mtx_lock(struct mtx *mp)
{
pthread_mutex_lock((pthread_mutex_t *)&mp->mtx_object);
}
void
mtx_unlock(struct mtx *mp)
{
pthread_mutex_unlock((pthread_mutex_t *)&mp->mtx_object);
}
struct mtx Giant;
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