Remove the event object in the kernel since it's rather extraneous at the moment. This makes the codecs and the plugins incompatible, so update fully.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18867 a1c6a512-1295-4272-9138-f99709370657

10 files changed, 15 insertions, 170 deletions

diff --git a/apps/codecs.c b/apps/codecs.c
index 8e9e55a5d4..53fa6755a8 100644
--- a/apps/codecs.c
+++ b/apps/codecs.c
@@ -105,9 +105,6 @@ struct codec_api ci = {
     semaphore_init,
     semaphore_wait,
     semaphore_release,
-    event_init,
-    event_wait,
-    event_set_state,
 #endif
 
 #ifdef CACHE_FUNCTIONS_AS_CALL
diff --git a/apps/codecs.h b/apps/codecs.h
index 6d8c1016a8..4194524e6d 100644
--- a/apps/codecs.h
+++ b/apps/codecs.h
@@ -82,12 +82,12 @@
 #define CODEC_ENC_MAGIC 0x52454E43 /* RENC */
 
 /* increase this every time the api struct changes */
-#define CODEC_API_VERSION 26
+#define CODEC_API_VERSION 27
 
 /* update this to latest version if a change to the api struct breaks
    backwards compatibility (and please take the opportunity to sort in any
    new function which are "waiting" at the end of the function table) */
-#define CODEC_MIN_API_VERSION 26
+#define CODEC_MIN_API_VERSION 27
 
 /* codec return codes */
 enum codec_status {
@@ -175,9 +175,6 @@ struct codec_api {
     void (*semaphore_init)(struct semaphore *s, int max, int start);
     void (*semaphore_wait)(struct semaphore *s);
     void (*semaphore_release)(struct semaphore *s);
-    void (*event_init)(struct event *e, unsigned int flags);
-    void (*event_wait)(struct event *e, unsigned int for_state);
-    void (*event_set_state)(struct event *e, unsigned int state);
 #endif /* NUM_CORES */
 
 #ifdef CACHE_FUNCTIONS_AS_CALL
diff --git a/apps/codecs/spc.c b/apps/codecs/spc.c
index da91eb0391..a2b6fabf99 100644
--- a/apps/codecs/spc.c
+++ b/apps/codecs/spc.c
@@ -230,7 +230,7 @@ static struct
     int head, tail;
     struct semaphore emu_sem_head;
     struct semaphore emu_sem_tail;
-    struct event emu_evt_reply;
+    struct semaphore emu_evt_reply;
     intptr_t retval;
     struct sample_queue_chunk wav_chunk[WAV_NUM_CHUNKS];
 } sample_queue SHAREDBSS_ATTR;
@@ -284,7 +284,7 @@ static intptr_t emu_thread_send_msg(long id, intptr_t data)
 
     if (id != SPC_EMU_QUIT) {
         /* Wait for a response */
-        ci->event_wait(&sample_queue.emu_evt_reply, STATE_SIGNALED);
+        ci->semaphore_wait(&sample_queue.emu_evt_reply);
     }
 
     return sample_queue.retval;    
@@ -316,7 +316,7 @@ static bool emu_thread_process_msg(struct sample_queue_chunk *chunk)
     }
 
     if (id != SPC_EMU_QUIT) {
-        ci->event_set_state(&sample_queue.emu_evt_reply, STATE_SIGNALED);
+        ci->semaphore_release(&sample_queue.emu_evt_reply);
     }
 
     return ret;
@@ -361,8 +361,7 @@ static bool spc_emu_start(void)
 
     /* Initialize audio queue as full to prevent emu thread from trying to run the
        emulator before loading something */
-    ci->event_init(&sample_queue.emu_evt_reply,
-                   EVENT_AUTOMATIC | STATE_NONSIGNALED);
+    ci->semaphore_init(&sample_queue.emu_evt_reply, 1, 0);
     ci->semaphore_init(&sample_queue.emu_sem_tail, 2, 0);
     ci->semaphore_init(&sample_queue.emu_sem_head, 2, 2);
     sample_queue.head = 0;
diff --git a/apps/plugin.c b/apps/plugin.c
index 4ba1396085..a9c9a6c3f8 100644
--- a/apps/plugin.c
+++ b/apps/plugin.c
@@ -614,11 +614,7 @@ static const struct plugin_api rockbox_api = {
     semaphore_wait,
     semaphore_release,
 #endif
-#ifdef HAVE_EVENT_OBJECTS
-    event_init,
-    event_wait,
-    event_set_state,
-#endif
+
     appsversion,
     /* new stuff at the end, sort into place next time
        the API gets incompatible */
diff --git a/apps/plugin.h b/apps/plugin.h
index 1029431cd1..9544b3851c 100644
--- a/apps/plugin.h
+++ b/apps/plugin.h
@@ -130,12 +130,12 @@ void* plugin_get_buffer(size_t *buffer_size);
 #define PLUGIN_MAGIC 0x526F634B /* RocK */
 
 /* increase this every time the api struct changes */
-#define PLUGIN_API_VERSION 124
+#define PLUGIN_API_VERSION 125
 
 /* update this to latest version if a change to the api struct breaks
    backwards compatibility (and please take the opportunity to sort in any
    new function which are "waiting" at the end of the function table) */
-#define PLUGIN_MIN_API_VERSION 123
+#define PLUGIN_MIN_API_VERSION 125
 
 /* plugin return codes */
 enum plugin_status {
@@ -770,11 +770,6 @@ struct plugin_api {
     void (*semaphore_wait)(struct semaphore *s);
     void (*semaphore_release)(struct semaphore *s);
 #endif
-#ifdef HAVE_EVENT_OBJECTS
-    void (*event_init)(struct event *e, unsigned int flags);
-    void (*event_wait)(struct event *e, unsigned int for_state);
-    void (*event_set_state)(struct event *e, unsigned int state);
-#endif
 
         const char *appsversion;
     /* new stuff at the end, sort into place next time
diff --git a/apps/plugins/test_codec.c b/apps/plugins/test_codec.c
index 448b512c83..3c54610a94 100644
--- a/apps/plugins/test_codec.c
+++ b/apps/plugins/test_codec.c
@@ -493,9 +493,6 @@ static void init_ci(void)
     ci.semaphore_init = rb->semaphore_init;
     ci.semaphore_wait = rb->semaphore_wait;
     ci.semaphore_release = rb->semaphore_release;
-    ci.event_init = rb->event_init;
-    ci.event_wait = rb->event_wait;
-    ci.event_set_state = rb->event_set_state;
 #endif
 
 }
diff --git a/apps/voice_thread.c b/apps/voice_thread.c
index aeffa5bd7c..084c3872c6 100644
--- a/apps/voice_thread.c
+++ b/apps/voice_thread.c
@@ -61,8 +61,8 @@ static const char voice_thread_name[] = "voice";
 /* Voice thread synchronization objects */
 static struct event_queue voice_queue SHAREDBSS_ATTR;
 static struct mutex voice_mutex SHAREDBSS_ATTR;
-static struct event voice_event SHAREDBSS_ATTR;
 static struct queue_sender_list voice_queue_sender_list SHAREDBSS_ATTR;
+static bool voice_done SHAREDDATA_ATTR = true;
 
 /* Buffer for decoded samples */
 static spx_int16_t voice_output_buf[VOICE_FRAME_SIZE] CACHEALIGN_ATTR;
@@ -189,9 +189,9 @@ void voice_wait(void)
     /* NOTE: One problem here is that we can't tell if another thread started a
      * new clip by the time we wait. This should be resolvable if conditions
      * ever require knowing the very clip you requested has finished. */
-    event_wait(&voice_event, STATE_SIGNALED);
+
     /* Wait for PCM buffer to be exhausted. Works only if not playing. */
-    while(!playback_is_playing() && pcm_is_playing())
+    while(!voice_done || (!playback_is_playing() && pcm_is_playing()))
         sleep(1);
 }
 
@@ -219,7 +219,7 @@ static void voice_message(struct voice_thread_data *td)
         case Q_VOICE_PLAY:
             LOGFQUEUE("voice < Q_VOICE_PLAY");
             /* Put up a block for completion signal */
-            event_set_state(&voice_event, STATE_NONSIGNALED);
+            voice_done = false;
 
             /* Copy the clip info */
             td->vi = *(struct voice_info *)td->ev.data;
@@ -264,7 +264,7 @@ static void voice_message(struct voice_thread_data *td)
             cancel_cpu_boost();
 
             td->state = TSTATE_STOPPED;
-            event_set_state(&voice_event, STATE_SIGNALED);
+            voice_done = true;
             break;
 
         case Q_VOICE_STATE:
@@ -433,7 +433,7 @@ void voice_thread_init(void)
     logf("Starting voice thread");
     queue_init(&voice_queue, false);
     mutex_init(&voice_mutex);
-    event_init(&voice_event, STATE_SIGNALED | EVENT_MANUAL);
+
     voice_thread_p = create_thread(voice_thread, voice_stack,
             sizeof(voice_stack), CREATE_THREAD_FROZEN,
             voice_thread_name IF_PRIO(, PRIORITY_PLAYBACK) IF_COP(, CPU));
diff --git a/firmware/export/config.h b/firmware/export/config.h
index 73ecca1495..e425bf98e5 100644
--- a/firmware/export/config.h
+++ b/firmware/export/config.h
@@ -409,7 +409,6 @@
 #endif /* SIMULATOR */
 
 #define HAVE_SEMAPHORE_OBJECTS
-#define HAVE_EVENT_OBJECTS
 
 #ifdef TOSHIBA_GIGABEAT_F
 #define HAVE_WAKEUP_OBJECTS
diff --git a/firmware/export/kernel.h b/firmware/export/kernel.h
index 1824962dfd..51eb635004 100644
--- a/firmware/export/kernel.h
+++ b/firmware/export/kernel.h
@@ -176,17 +176,6 @@ struct semaphore
 };
 #endif
 
-#ifdef HAVE_EVENT_OBJECTS
-struct event
-{
-    struct thread_entry *queues[2];     /* waiters for each state */
-    unsigned char automatic;            /* event performs auto-reset */
-    unsigned char state;                /* state: 1 = signaled */
-    IF_COP( struct corelock cl; )       /* multiprocessor sync */
-};
-#endif
-
-
 #ifdef HAVE_WAKEUP_OBJECTS
 struct wakeup
 {
@@ -286,13 +275,6 @@ extern void semaphore_init(struct semaphore *s, int max, int start);
 extern void semaphore_wait(struct semaphore *s);
 extern void semaphore_release(struct semaphore *s);
 #endif /* HAVE_SEMAPHORE_OBJECTS */
-#ifdef HAVE_EVENT_OBJECTS
-#define EVENT_AUTOMATIC 0x10
-#define EVENT_MANUAL    0x00
-extern void event_init(struct event *e, unsigned int flags);
-extern void event_wait(struct event *e, unsigned int for_state);
-extern void event_set_state(struct event *e, unsigned int state);
-#endif /* HAVE_EVENT_OBJECTS */
 
 #ifdef HAVE_WAKEUP_OBJECTS
 extern void wakeup_init(struct wakeup *w);
diff --git a/firmware/kernel.c b/firmware/kernel.c
index 10efb87cf4..fb9c5e2449 100644
--- a/firmware/kernel.c
+++ b/firmware/kernel.c
@@ -1264,122 +1264,6 @@ void semaphore_release(struct semaphore *s)
 }
 #endif /* HAVE_SEMAPHORE_OBJECTS */
 
-/****************************************************************************
- * Simple event functions ;)
- ****************************************************************************/
-#ifdef HAVE_EVENT_OBJECTS
-void event_init(struct event *e, unsigned int flags)
-{
-    e->queues[STATE_NONSIGNALED] = NULL;
-    e->queues[STATE_SIGNALED] = NULL;
-    e->state = flags & STATE_SIGNALED;
-    e->automatic = (flags & EVENT_AUTOMATIC) ? 1 : 0;
-    corelock_init(&e->cl);
-}
-
-void event_wait(struct event *e, unsigned int for_state)
-{
-    struct thread_entry *current;
-
-    corelock_lock(&e->cl);
-
-    if(e->automatic != 0)
-    {
-        /* wait for false always satisfied by definition
-           or if it just changed to false */
-        if(e->state == STATE_SIGNALED || for_state == STATE_NONSIGNALED)
-        {
-            /* automatic - unsignal */
-            e->state = STATE_NONSIGNALED;
-            corelock_unlock(&e->cl);
-            return;
-        }
-        /* block until state matches */
-    }
-    else if(for_state == e->state)
-    {
-        /* the state being waited for is the current state */
-        corelock_unlock(&e->cl);
-        return;
-    }
-
-    /* block until state matches what callers requests */
-    current = cores[CURRENT_CORE].running;
-
-    IF_COP( current->obj_cl = &e->cl; )
-    current->bqp = &e->queues[for_state];
-
-    disable_irq();
-    block_thread(current);
-
-    corelock_unlock(&e->cl);
-
-    /* turn control over to next thread */
-    switch_thread();
-}
-
-void event_set_state(struct event *e, unsigned int state)
-{
-    unsigned int result;
-    int oldlevel;
-
-    corelock_lock(&e->cl);
-
-    if(e->state == state)
-    {
-        /* no change */
-        corelock_unlock(&e->cl);
-        return;
-    }
-
-    IF_PRIO( result = THREAD_OK; )
-
-    oldlevel = disable_irq_save();
-
-    if(state == STATE_SIGNALED)
-    {
-        if(e->automatic != 0)
-        {
-            /* no thread should have ever blocked for nonsignaled */
-            KERNEL_ASSERT(e->queues[STATE_NONSIGNALED] == NULL,
-                          "set_event_state->queue[NS]:S\n");
-            /* pass to next thread and keep unsignaled - "pulse" */
-            result = wakeup_thread(&e->queues[STATE_SIGNALED]);
-            e->state = (result & THREAD_OK) ? STATE_NONSIGNALED : STATE_SIGNALED;
-        }
-        else
-        {
-            /* release all threads waiting for signaled */
-            e->state = STATE_SIGNALED;
-            IF_PRIO( result = )
-                thread_queue_wake(&e->queues[STATE_SIGNALED]);
-        }
-    }
-    else
-    {
-        /* release all threads waiting for nonsignaled */
-
-        /* no thread should have ever blocked if automatic */
-        KERNEL_ASSERT(e->queues[STATE_NONSIGNALED] == NULL ||
-                      e->automatic == 0, "set_event_state->queue[NS]:NS\n");
-
-        e->state = STATE_NONSIGNALED;
-        IF_PRIO( result = )
-            thread_queue_wake(&e->queues[STATE_NONSIGNALED]);
-    }
-
-    restore_irq(oldlevel);
-
-    corelock_unlock(&e->cl);
-
-#ifdef HAVE_PRIORITY_SCHEDULING
-    if(result & THREAD_SWITCH)
-        switch_thread();
-#endif
-}
-#endif /* HAVE_EVENT_OBJECTS */
-
-
 #ifdef HAVE_WAKEUP_OBJECTS
 /****************************************************************************
  * Lightweight IRQ-compatible wakeup object
@@ -1456,4 +1340,3 @@ int wakeup_signal(struct wakeup *w)
     return ret;
 }
 #endif /* HAVE_WAKEUP_OBJECTS */
-