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newlib-cygwin
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* bsd_mutex.cc (win_priority): Move to msleep helper function section. 

(set_priority): Ditto. Fix formatting.
	(_msleep): Cleanup obj formatting.  Rearrange obj order.
This commit is contained in:
Corinna Vinschen 2004-02-07 10:47:39 +00:00
parent a1bca00aa9
commit f5133f95b0
2 changed files with 44 additions and 32 deletions
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6
winsup/cygserver/ChangeLog
View File

@ -1,3 +1,9 @@
2004-02-07 Corinna Vinschen <corinna@vinschen.de>
* bsd_mutex.cc (win_priority): Move to msleep helper function section.
(set_priority): Ditto. Fix formatting.
(_msleep): Cleanup obj formatting. Rearrange obj order.
2004-02-06 Corinna Vinschen <corinna@vinschen.de>
* bsd_mutex.cc (_msleep): Handle PCATCH using signal_arrived event.

70
winsup/cygserver/bsd_mutex.cc
View File

@ -106,33 +106,6 @@ msleep_event_name (void *ident, char *name)
return name;
}
/*
* Original description from BSD code:
*
* General sleep call. Suspends the current process until a wakeup is
* performed on the specified identifier. The process will then be made
* runnable with the specified priority. Sleeps at most timo/hz seconds
* (0 means no timeout). If pri includes PCATCH flag, signals are checked
* before and after sleeping, else signals are not checked. Returns 0 if
* awakened, EWOULDBLOCK if the timeout expires. If PCATCH is set and a
* signal needs to be delivered, ERESTART is returned if the current system
* call should be restarted if possible, and EINTR is returned if the system
* call should be interrupted by the signal (return EINTR).
*
* The mutex argument is exited before the caller is suspended, and
* entered before msleep returns. If priority includes the PDROP
* flag the mutex is not entered before returning.
*/
static HANDLE msleep_glob_evt;
void
msleep_init (void)
{
msleep_glob_evt = CreateEvent (NULL, TRUE, FALSE, NULL);
if (!msleep_glob_evt)
panic ("CreateEvent in msleep_init failed: %E");
}
static int
win_priority (int priority)
{
@ -166,13 +139,40 @@ static int
set_priority (int priority)
{
int old_prio = GetThreadPriority (GetCurrentThread ());
if (!SetThreadPriority (GetCurrentThread (), win_priority(priority)))
if (!SetThreadPriority (GetCurrentThread (), win_priority (priority)))
log (LOG_WARNING,
"Warning: Setting thread priority to %d failed with error %lu\n",
win_priority(priority), GetLastError ());
win_priority (priority), GetLastError ());
return old_prio;
}
/*
* Original description from BSD code:
*
* General sleep call. Suspends the current process until a wakeup is
* performed on the specified identifier. The process will then be made
* runnable with the specified priority. Sleeps at most timo/hz seconds
* (0 means no timeout). If pri includes PCATCH flag, signals are checked
* before and after sleeping, else signals are not checked. Returns 0 if
* awakened, EWOULDBLOCK if the timeout expires. If PCATCH is set and a
* signal needs to be delivered, ERESTART is returned if the current system
* call should be restarted if possible, and EINTR is returned if the system
* call should be interrupted by the signal (return EINTR).
*
* The mutex argument is exited before the caller is suspended, and
* entered before msleep returns. If priority includes the PDROP
* flag the mutex is not entered before returning.
*/
static HANDLE msleep_glob_evt;
void
msleep_init (void)
{
msleep_glob_evt = CreateEvent (NULL, TRUE, FALSE, NULL);
if (!msleep_glob_evt)
panic ("CreateEvent in msleep_init failed: %E");
}
int
_msleep (void *ident, struct mtx *mtx, int priority,
const char *wmesg, int timo, struct thread *td)
@ -188,7 +188,13 @@ _msleep (void *ident, struct mtx *mtx, int priority,
if (mtx)
mtx_unlock (mtx);
int old_priority = set_priority (priority);
HANDLE obj[4] = { evt, td->client->handle (), msleep_glob_evt, td->client->signal_arrived () };
HANDLE obj[4] =
{
evt,
msleep_glob_evt,
td->client->handle (),
td->client->signal_arrived ()
};
/* PCATCH handling. If PCATCH is given and signal_arrived is a valid
handle, then it's used in the WaitFor call and EINTR is returned. */
int obj_cnt = 3;
@ -200,10 +206,10 @@ _msleep (void *ident, struct mtx *mtx, int priority,
case WAIT_OBJECT_0: /* wakeup() has been called. */
ret = 0;
break;
case WAIT_OBJECT_0 + 2: /* Shutdown event (triggered by wakeup_all). */
case WAIT_OBJECT_0 + 1: /* Shutdown event (triggered by wakeup_all). */
priority |= PDROP;
/*FALLTHRU*/
case WAIT_OBJECT_0 + 1: /* The dependent process has exited. */
case WAIT_OBJECT_0 + 2: /* The dependent process has exited. */
ret = EIDRM;
break;
case WAIT_OBJECT_0 + 3: /* Signal for calling process arrived. */