Application constraints are lock-free.

prrt/proto/applicationConstraints.c

@@ -8,8 +8,6 @@ PrrtApplicationConstraints *PrrtApplicationConstraints_create(prrtTimedelta_t ta
     PrrtApplicationConstraints *constraints = calloc(1, sizeof(PrrtApplicationConstraints));
     check_mem(constraints);
 
-    pthread_mutex_init(&constraints->lock, NULL);
-
     constraints->targetDelay_us = target_delay_us;
     constraints->queue_size = 1000;
 
@@ -22,30 +20,21 @@ PrrtApplicationConstraints *PrrtApplicationConstraints_create(prrtTimedelta_t ta
 
 bool PrrtApplicationConstraints_destroy(PrrtApplicationConstraints *applicationConstraints)
 {
-    pthread_mutex_destroy(&applicationConstraints->lock);
     free(applicationConstraints);
     return true;
 }
 
 prrtTimedelta_t PrrtApplicationConstraints_get_target_delay(PrrtApplicationConstraints *applicationConstraints)
 {
-    pthread_mutex_lock(&applicationConstraints->lock);
-    prrtTimedelta_t targetDelay = applicationConstraints->targetDelay_us;
-    pthread_mutex_unlock(&applicationConstraints->lock);
-    return targetDelay;
+    return applicationConstraints->targetDelay_us;
 }
 
 uint32_t PrrtApplicationConstraints_get_app_queue_size(PrrtApplicationConstraints *applicationConstraints)
 {
-    pthread_mutex_lock(&applicationConstraints->lock);
-    uint32_t size = applicationConstraints->queue_size;
-    pthread_mutex_unlock(&applicationConstraints->lock);
-    return size;
+    return (uint32_t) atomic_load_explicit(&applicationConstraints->queue_size, memory_order_acquire);
 }
 bool PrrtApplicationConstraints_set_app_queue_size(PrrtApplicationConstraints *applicationConstraints, uint32_t size)
 {
-    pthread_mutex_lock(&applicationConstraints->lock);
-    applicationConstraints->queue_size = size;
-    pthread_mutex_unlock(&applicationConstraints->lock);
+    atomic_store_explicit(&applicationConstraints->queue_size, size, memory_order_release);
     return true;
 }

prrt/proto/applicationConstraints.h

@@ -5,8 +5,7 @@
 
 typedef struct applicationConstraints {
     prrtTimedelta_t targetDelay_us;
-    uint32_t queue_size;
-    pthread_mutex_t lock;
+    atomic_uint_fast32_t queue_size;
 } PrrtApplicationConstraints;
 
 PrrtApplicationConstraints *PrrtApplicationConstraints_create(prrtTimedelta_t target_delay_us);