127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 2010 Kip Macy. All rights reserved.
|
|
* Copyright (C) 2017 THL A29 Limited, a Tencent company.
|
|
* All rights reserved.
|
|
*
|
|
* 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
|
|
*
|
|
* Derived in part from libplebnet's pn_kern_synch.c.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
|
|
#include <sys/systm.h>
|
|
#include <sys/condvar.h>
|
|
#include <sys/kdb.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/ktr.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/resourcevar.h>
|
|
#include <sys/sched.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/sleepqueue.h>
|
|
#include <sys/smp.h>
|
|
#include <sys/sx.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/vmmeter.h>
|
|
#ifdef KTRACE
|
|
#include <sys/uio.h>
|
|
#include <sys/ktrace.h>
|
|
#endif
|
|
|
|
#include "ff_host_interface.h"
|
|
|
|
int hogticks;
|
|
static uint8_t pause_wchan[MAXCPU];
|
|
|
|
typedef struct sleep_entry {
|
|
LIST_ENTRY(sleep_entry) list_entry;
|
|
void *chan;
|
|
const char *wmesg;
|
|
struct cv cond;
|
|
int waiters;
|
|
} *sleep_entry_t;
|
|
|
|
static void synch_setup(void *dummy);
|
|
SYSINIT(synch_setup, SI_SUB_INTR, SI_ORDER_FIRST, synch_setup,
|
|
NULL);
|
|
|
|
static struct se_head *se_active;
|
|
static u_long se_hashmask;
|
|
static struct mtx synch_lock;
|
|
#define SE_HASH(chan) (((uintptr_t)chan) & se_hashmask)
|
|
LIST_HEAD(se_head, sleep_entry);
|
|
|
|
static void
|
|
synch_setup(void *arg)
|
|
{
|
|
mtx_init(&synch_lock, "synch_lock", NULL, MTX_DEF);
|
|
se_active = hashinit(64, M_TEMP, &se_hashmask);
|
|
}
|
|
|
|
int
|
|
_sleep(void *ident, struct lock_object *lock, int priority,
|
|
const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags)
|
|
{
|
|
//FIXME:we couldn't really sleep.
|
|
return (EPERM);
|
|
}
|
|
|
|
|
|
//FIXME.
|
|
int
|
|
msleep_spin_sbt(void *ident, struct mtx *mtx, const char *wmesg,
|
|
sbintime_t sbt, sbintime_t pr, int flags)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pause_sbt(const char *wmesg, sbintime_t sbt, sbintime_t pr, int flags)
|
|
{
|
|
return (_sleep(&pause_wchan[curcpu], NULL, 0, wmesg, sbt, pr, flags));
|
|
}
|
|
|
|
void
|
|
wakeup(void *chan)
|
|
{
|
|
|
|
}
|
|
|
|
|
|
void
|
|
wakeup_one(void *chan)
|
|
{
|
|
|
|
}
|
|
|
|
void
|
|
kern_yield(int prio)
|
|
{
|
|
|
|
}
|