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Factor target_timer_callbacks_check_time into pieces: 

- Add target_timer_callback_periodic_restart and target_call_timer_callback.
- Clean up and simplify logic that determines whether to call each callback. 
- Move variable declarations to location of first use.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2195 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
zwelch 2009-06-11 11:43:00 +00:00
parent 7c892082c9
commit 8e899d43ef
1 changed files with 40 additions and 30 deletions
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68
src/target/target.c
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@ -821,47 +821,57 @@ int target_call_event_callbacks(target_t *target, enum target_event event)
return ERROR_OK; return ERROR_OK;
} }
static int target_timer_callback_periodic_restart(
target_timer_callback_t *cb, struct timeval *now)
{
int time_ms = cb->time_ms;
cb->when.tv_usec = now->tv_usec + (time_ms % 1000) * 1000;
time_ms -= (time_ms % 1000);
cb->when.tv_sec = now->tv_sec + time_ms / 1000;
if (cb->when.tv_usec > 1000000)
{
cb->when.tv_usec = cb->when.tv_usec - 1000000;
cb->when.tv_sec += 1;
}
return ERROR_OK;
}
static int target_call_timer_callback(target_timer_callback_t *cb,
struct timeval *now)
{
cb->callback(cb->priv);
if (cb->periodic)
return target_timer_callback_periodic_restart(cb, now);
return target_unregister_timer_callback(cb->callback, cb->priv);
}
static int target_call_timer_callbacks_check_time(int checktime) static int target_call_timer_callbacks_check_time(int checktime)
{ {
target_timer_callback_t *callback = target_timer_callbacks;
target_timer_callback_t *next_callback;
struct timeval now;
keep_alive(); keep_alive();
struct timeval now;
gettimeofday(&now, NULL); gettimeofday(&now, NULL);
target_timer_callback_t *callback = target_timer_callbacks;
while (callback) while (callback)
{ {
next_callback = callback->next; // cleaning up may unregister and free this callback
target_timer_callback_t *next_callback = callback->next;
if ((!checktime&&callback->periodic)|| bool call_it = callback->callback &&
(((now.tv_sec >= callback->when.tv_sec) && (now.tv_usec >= callback->when.tv_usec)) ((!checktime && callback->periodic) ||
|| (now.tv_sec > callback->when.tv_sec))) now.tv_sec > callback->when.tv_sec ||
(now.tv_sec == callback->when.tv_sec &&
now.tv_usec >= callback->when.tv_usec));
if (call_it)
{ {
if(callback->callback != NULL) int retval = target_call_timer_callback(callback, &now);
{ if (retval != ERROR_OK)
callback->callback(callback->priv);
if (callback->periodic)
{
int time_ms = callback->time_ms;
callback->when.tv_usec = now.tv_usec + (time_ms % 1000) * 1000;
time_ms -= (time_ms % 1000);
callback->when.tv_sec = now.tv_sec + time_ms / 1000;
if (callback->when.tv_usec > 1000000)
{
callback->when.tv_usec = callback->when.tv_usec - 1000000;
callback->when.tv_sec += 1;
}
}
else
{
int retval;
if((retval = target_unregister_timer_callback(callback->callback, callback->priv)) != ERROR_OK)
return retval; return retval;
} }
}
}
callback = next_callback; callback = next_callback;
} }