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#include "messages.h"
int mqueue_get(MessageQueue *q, SynthMessage *msg) {
pthread_mutex_lock(&(q)->lock);
if ((q)->tail == (q)->head) {
pthread_mutex_unlock(&(q)->lock);
return 1;
}
*(msg) = (q)->buffer[(q)->tail];
(q)->tail = ((q)->tail + 1) % MESSAGE_QUEUE_SIZE;
pthread_mutex_unlock(&(q)->lock);
return 0;
}
int mqueue__push_no_lock(MessageQueue *q, SynthMessage msg) {
size_t next = ((q)->head + 1) % MESSAGE_QUEUE_SIZE;
if ((q)->tail == next) {
return 1;
}
(q)->buffer[(q)->head] = msg;
(q)->head = next;
return 0;
}
int mqueue_push(MessageQueue *q, SynthMessage msg) {
pthread_mutex_lock(&(q)->lock);
int ret = mqueue__push_no_lock(q, msg);
pthread_mutex_unlock(&(q)->lock);
return ret;
}
int mqueue_push_many(MessageQueue *q, SynthMessage *msg, size_t count) {
pthread_mutex_lock(&(q)->lock);
int ret = 0;
for (size_t i = 0; i < count; i++) {
ret = mqueue__push_no_lock(q, msg[i]);
if (ret != 0) {
break;
}
}
pthread_mutex_unlock(&(q)->lock);
return ret;
}
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