/* afs_osi_TimedSleep
*
* Arguments:
* event - event to sleep on
* ams --- max sleep time in milliseconds
* aintok - 1 if should sleep interruptibly
*
* Returns 0 if timeout and EINTR if signalled.
*/
int
afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
{
int code = 0;
struct afs_event *evp;
clock_t ticks;
ticks = (ams * afs_hz) / 1000;
#if defined(AFS_SUN510_ENV)
ticks = ticks + ddi_get_lbolt();
#else
ticks = ticks + lbolt;
#endif
evp = afs_getevent(event);
AFS_ASSERT_GLOCK();
if (aintok) {
if (cv_timedwait_sig(&evp->cond, &afs_global_lock, ticks) == 0)
code = EINTR;
} else {
cv_timedwait(&evp->cond, &afs_global_lock, ticks);
}
relevent(evp);
return code;
}
void
afs_osi_Sleep(void *event)
{
struct afs_event *evp;
int seq;
evp = afs_getevent(event);
#ifdef AFS_DARWIN80_ENV
AFS_ASSERT_GLOCK();
AFS_GUNLOCK();
#endif
seq = evp->seq;
while (seq == evp->seq) {
#ifdef AFS_DARWIN80_ENV
evp->owner = 0;
msleep(event, evp->lck, PVFS, "afs_osi_Sleep", NULL);
evp->owner = current_thread();
#else
AFS_ASSERT_GLOCK();
AFS_GUNLOCK();
/* this is probably safe for all versions, but testing is hard */
sleep(event, PVFS);
AFS_GLOCK();
#endif
}
relevent(evp);
#ifdef AFS_DARWIN80_ENV
AFS_GLOCK();
#endif
}
/* afs_osi_SleepSig
*
* Waits for an event to be notified, returning early if a signal
* is received. Returns EINTR if signaled, and 0 otherwise.
*/
int
afs_osi_SleepSig(void *event)
{
struct afs_event *evp;
int seq, retval;
int code;
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
seq = evp->seq;
retval = 0;
AFS_GUNLOCK();
code = wait_event_freezable(evp->cond, seq != evp->seq);
AFS_GLOCK();
if (code == -ERESTARTSYS)
code = EINTR;
else
code = -code;
relevent(evp);
return code;
}
/* afs_osi_TimedSleep
*
* Arguments:
* event - event to sleep on
* ams --- max sleep time in milliseconds
* aintok - 1 if should sleep interruptibly
*
* Returns 0 if timeout, EINTR if signalled, and EGAIN if it might
* have raced.
*/
int
afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
{
int code = 0;
long ticks = (ams * HZ / 1000) + 1;
struct afs_event *evp;
int seq;
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
seq = evp->seq;
AFS_GUNLOCK();
code = wait_event_freezable_timeout(evp->cond, evp->seq != seq, ticks);
AFS_GLOCK();
if (code == -ERESTARTSYS)
code = EINTR;
else
code = -code;
relevent(evp);
return code;
}
/* afs_osi_TimedSleep
*
* Arguments:
* event - event to sleep on
* ams --- max sleep time in milliseconds
* aintok - 1 if should sleep interruptibly
*
* Returns 0 if timeout, EINTR if signalled, and EGAIN if it might
* have raced.
*/
int
afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
{
int code = 0;
long ticks = (ams * HZ / 1000) + 1;
struct afs_event *evp;
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
add_wait_queue(&evp->cond, &wait);
set_current_state(TASK_INTERRUPTIBLE);
/* always sleep TASK_INTERRUPTIBLE to keep load average
* from artifically increasing. */
AFS_GUNLOCK();
if (aintok) {
if (schedule_timeout(ticks))
code = EINTR;
} else
schedule_timeout(ticks);
#ifdef CONFIG_PM
if (
#ifdef PF_FREEZE
current->flags & PF_FREEZE
#else
#if defined(STRUCT_TASK_STRUCT_HAS_TODO)
!current->todo
#else
#if defined(STRUCT_TASK_STRUCT_HAS_THREAD_INFO)
test_ti_thread_flag(current->thread_info, TIF_FREEZE)
#else
test_ti_thread_flag(task_thread_info(current), TIF_FREEZE)
#endif
#endif
#endif
)
#ifdef LINUX_REFRIGERATOR_TAKES_PF_FREEZE
refrigerator(PF_FREEZE);
#else
refrigerator();
#endif
#endif
AFS_GLOCK();
remove_wait_queue(&evp->cond, &wait);
set_current_state(TASK_RUNNING);
relevent(evp);
return code;
}
/* afs_osi_SleepSig
*
* Waits for an event to be notified, returning early if a signal
* is received. Returns EINTR if signaled, and 0 otherwise.
*/
int
afs_osi_SleepSig(void *event)
{
struct afs_event *evp;
int seq, retval;
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
seq = evp->seq;
retval = 0;
add_wait_queue(&evp->cond, &wait);
while (seq == evp->seq) {
set_current_state(TASK_INTERRUPTIBLE);
AFS_ASSERT_GLOCK();
AFS_GUNLOCK();
schedule();
#ifdef CONFIG_PM
if (
#ifdef PF_FREEZE
current->flags & PF_FREEZE
#else
#if defined(STRUCT_TASK_STRUCT_HAS_TODO)
!current->todo
#else
#if defined(STRUCT_TASK_STRUCT_HAS_THREAD_INFO)
test_ti_thread_flag(current->thread_info, TIF_FREEZE)
#else
test_ti_thread_flag(task_thread_info(current), TIF_FREEZE)
#endif
#endif
#endif
)
#ifdef LINUX_REFRIGERATOR_TAKES_PF_FREEZE
refrigerator(PF_FREEZE);
#else
refrigerator();
#endif
#endif
AFS_GLOCK();
if (signal_pending(current)) {
retval = EINTR;
break;
}
}
remove_wait_queue(&evp->cond, &wait);
set_current_state(TASK_RUNNING);
relevent(evp);
return retval;
}
/* afs_osi_TimedSleep
*
* Arguments:
* event - event to sleep on
* ams --- max sleep time in milliseconds
* aintok - 1 if should sleep interruptibly
*
* Returns 0 if timeout and EINTR if signalled.
*/
int
afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
{
int code = 0;
struct afs_event *evp;
int seq;
int prio;
#ifdef AFS_DARWIN80_ENV
struct timespec ts;
#else
int ticks;
#endif
evp = afs_getevent(event);
seq = evp->seq;
AFS_GUNLOCK();
#ifdef AFS_DARWIN80_ENV
if (aintok)
prio = PCATCH | PPAUSE;
else
prio = PVFS;
ts.tv_sec = ams / 1000;
ts.tv_nsec = (ams % 1000) * 1000000;
evp->owner = 0;
code = msleep(event, evp->lck, prio, "afs_osi_TimedSleep", &ts);
evp->owner = current_thread();
#else
ticks = (ams * afs_hz) / 1000;
/* this is probably safe for all versions, but testing is hard. */
/* using tsleep instead of assert_wait/thread_set_timer/thread_block
* allows shutdown to work in 1.4 */
/* lack of PCATCH does *not* prevent signal delivery, neither does
* a low priority. We would need to deal with ERESTART here if we
* wanted to mess with p->p_sigmask, and messing with p_sigignore is
* not the way to go.... (someone correct me if I'm wrong)
*/
if (aintok)
prio = PCATCH | PPAUSE;
else
prio = PVFS;
code = tsleep(event, prio, "afs_osi_TimedSleep", ticks);
AFS_GLOCK();
#endif
if (seq == evp->seq)
code = EINTR;
relevent(evp);
#ifdef AFS_DARWIN80_ENV
AFS_GLOCK();
#endif
return code;
}
void
afs_osi_Sleep(void *event)
{
struct afs_event *evp;
int seq;
evp = afs_getevent(event);
seq = evp->seq;
while (seq == evp->seq) {
AFS_ASSERT_GLOCK();
cv_wait(&evp->cond, &afs_global_lock);
}
relevent(evp);
}
int
afs_osi_Wakeup(void *event)
{
int ret = 1;
struct afs_event *evp;
evp = afs_getevent(event);
if (evp->refcount > 1) {
evp->seq++;
thread_wakeup((vm_offset_t) (&evp->cond));
ret = 0;
}
relevent(evp);
return ret;
}
int
afs_osi_Wakeup(void *event)
{
int ret = 1;
struct afs_event *evp;
evp = afs_getevent(event);
if (evp->refcount > 1) {
evp->seq++;
e_wakeup(&evp->cond);
ret = 0;
}
relevent(evp);
return ret;
}
int
afs_osi_Wakeup(void *event)
{
struct afs_event *evp;
int ret = 1;
evp = afs_getevent(event);
if (evp->refcount > 1) {
evp->seq++;
/* this is probably safe for all versions, but testing is hard. */
wakeup(event);
ret = 0;
}
relevent(evp);
return ret;
}
void
afs_osi_Sleep(void *event)
{
struct afs_event *evp;
int seq;
evp = afs_getevent(event);
seq = evp->seq;
while (seq == evp->seq) {
AFS_ASSERT_GLOCK();
e_assert_wait(&evp->cond, 0);
AFS_GUNLOCK();
e_block_thread();
AFS_GLOCK();
}
relevent(evp);
}
void
afs_osi_Sleep(void *event)
{
struct afs_event *evp;
int seq;
evp = afs_getevent(event);
seq = evp->seq;
while (seq == evp->seq) {
AFS_ASSERT_GLOCK();
assert_wait((vm_offset_t) (&evp->cond), 0);
AFS_GUNLOCK();
thread_block();
AFS_GLOCK();
}
relevent(evp);
}
int
afs_osi_Wakeup(void *event)
{
int ret = 2;
struct afs_event *evp;
evp = afs_getevent(event);
if (!evp) /* No sleepers */
return 1;
if (evp->refcount > 1) {
evp->seq++;
wake_up(&evp->cond);
ret = 0;
}
relevent(evp);
return ret;
}
int
afs_osi_SleepSig(void *event)
{
struct afs_event *evp;
int seq, code = 0;
evp = afs_getevent(event);
seq = evp->seq;
while (seq == evp->seq) {
AFS_ASSERT_GLOCK();
if (cv_wait_sig(&evp->cond, &afs_global_lock) == 0) {
code = EINTR;
break;
}
}
relevent(evp);
return code;
}
/* afs_osi_SleepSig
*
* Waits for an event to be notified, returning early if a signal
* is received. Returns EINTR if signaled, and 0 otherwise.
*/
int
afs_osi_SleepSig(void *event)
{
struct afs_event *evp;
int seq, retval;
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
seq = evp->seq;
retval = 0;
add_wait_queue(&evp->cond, &wait);
while (seq == evp->seq) {
set_current_state(TASK_INTERRUPTIBLE);
AFS_ASSERT_GLOCK();
AFS_GUNLOCK();
schedule();
try_to_freeze();
AFS_GLOCK();
if (signal_pending(current)) {
retval = EINTR;
break;
}
}
remove_wait_queue(&evp->cond, &wait);
set_current_state(TASK_RUNNING);
relevent(evp);
return retval;
}
/* afs_osi_TimedSleep
*
* Arguments:
* event - event to sleep on
* ams --- max sleep time in milliseconds
* aintok - 1 if should sleep interruptibly
*
* Returns 0 if timeout, EINTR if signalled, and EGAIN if it might
* have raced.
*/
int
afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
{
int code = 0;
long ticks = (ams * HZ / 1000) + 1;
struct afs_event *evp;
#ifdef DECLARE_WAITQUEUE
DECLARE_WAITQUEUE(wait, current);
#else
struct wait_queue wait = { current, NULL };
#endif
evp = afs_getevent(event);
if (!evp) {
afs_addevent(event);
evp = afs_getevent(event);
}
add_wait_queue(&evp->cond, &wait);
set_current_state(TASK_INTERRUPTIBLE);
/* always sleep TASK_INTERRUPTIBLE to keep load average
* from artifically increasing. */
AFS_GUNLOCK();
if (schedule_timeout(ticks)) {
if (aintok)
code = EINTR;
}
try_to_freeze();
AFS_GLOCK();
remove_wait_queue(&evp->cond, &wait);
set_current_state(TASK_RUNNING);
relevent(evp);
return code;
}
/* afs_osi_TimedSleep
*
* Arguments:
* event - event to sleep on
* ams --- max sleep time in milliseconds
* aintok - 1 if should sleep interruptibly
*
* Returns 0 if timeout and EINTR if signalled.
*/
int
afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
{
int code = 0;
struct afs_event *evp;
struct timestruc_t ticks;
struct trb *trb;
int rc;
ticks.tv_sec = ams / 1000;
ticks.tv_nsec = (ams - (ticks.tv_sec * 1000)) * 1000000;
evp = afs_getevent(event);
trb = talloc();
if (trb == NULL)
osi_Panic("talloc returned NULL");
trb->flags = 0;
trb->func = AfsWaitHack;
trb->eventlist = EVENT_NULL;
trb->ipri = INTTIMER;
trb->func_data = thread_self();
trb->timeout.it_value = ticks;
e_assert_wait(&evp->cond, aintok);
AFS_GUNLOCK();
tstart(trb);
rc = e_block_thread();
while (tstop(trb));
if (rc == THREAD_INTERRUPTED)
code = EINTR;
tfree(trb);
AFS_GLOCK();
relevent(evp);
return code;
}
/* osi_TimedSleep
*
* Arguments:
* event - event to sleep on
* ams --- max sleep time in milliseconds
* aintok - 1 if should sleep interruptibly
*
* Returns 0 if timeout and EINTR if signalled.
*/
static int
osi_TimedSleep(char *event, afs_int32 ams, int aintok)
{
int code = 0;
struct afs_event *evp;
int ticks;
ticks = (ams * afs_hz) / 1000;
evp = afs_getevent(event);
assert_wait((vm_offset_t) (&evp->cond), aintok);
AFS_GUNLOCK();
thread_set_timeout(ticks);
thread_block();
AFS_GLOCK();
/* if (current_thread()->wait_result != THREAD_AWAKENED)
* code = EINTR; */
relevent(evp);
return code;
}
