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Add queue_send synchronous message sending. Right now only for SWCODEC. Actual usage to be added to playback and recording shortly in upcoming commits.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11776 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2006-12-16 18:35:12 +00:00
parent 63a1cb52b4
commit 43c15921e4
6 changed files with 442 additions and 33 deletions
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35
firmware/thread.c
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@ -39,6 +39,11 @@ static unsigned short highest_priority IBSS_ATTR;
static int boosted_threads IBSS_ATTR;
#endif
#ifdef HAVE_EXTENDED_MESSAGING_AND_NAME
#define STAY_IRQ_LEVEL -1
static int switch_to_irq_level = STAY_IRQ_LEVEL;
#endif
/* Define to enable additional checks for blocking violations etc. */
#define THREAD_EXTRA_CHECKS
@ -388,6 +393,18 @@ void switch_thread(bool save_context, struct thread_entry **blocked_list)
/* Rearrange thread lists as needed */
change_thread_state(blocked_list);
#ifdef HAVE_EXTENDED_MESSAGING_AND_NAME
/* This has to be done after the scheduler is finished with the
blocked_list pointer so that an IRQ can't kill us by attempting
a wake but before attempting any core sleep. */
if (switch_to_irq_level != STAY_IRQ_LEVEL)
{
int level = switch_to_irq_level;
switch_to_irq_level = STAY_IRQ_LEVEL;
set_irq_level(level);
}
#endif
}
/* Go through the list of sleeping task to check if we need to wake up
@ -471,6 +488,7 @@ void block_thread(struct thread_entry **list)
/* Set the state to blocked and ask the scheduler to switch tasks,
* this takes us off of the run queue until we are explicitly woken */
SET_STATE(current->statearg, STATE_BLOCKED, 0);
switch_thread(true, list);
#ifdef HAVE_SCHEDULER_BOOSTCTRL
@ -522,6 +540,23 @@ void block_thread_w_tmo(struct thread_entry **list, int timeout)
*list = NULL;
}
#if defined(HAVE_EXTENDED_MESSAGING_AND_NAME) && !defined(SIMULATOR)
void set_irq_level_and_block_thread(struct thread_entry **list, int level)
{
switch_to_irq_level = level;
block_thread(list);
}
#if 0
void set_irq_level_and_block_thread_w_tmo(struct thread_entry **list,
int timeout, int level)
{
switch_to_irq_level = level;
block_thread_w_tmo(list, timeout);
}
#endif
#endif /* HAVE_EXTENDED_MESSAGING_AND_NAME */
void wakeup_thread(struct thread_entry **list)
{
struct thread_entry *thread;