Changes in uspace/lib/usb/src/host/endpoint.c [506d330:4fd3faf] in mainline

File:

• uspace/lib/usb/src/host/endpoint.c (modified) (3 diffs)

uspace/lib/usb/src/host/endpoint.c

@@ -34 +34 @@
  */
 
+#include <assert.h>
 #include <errno.h>
 #include <usb/host/endpoint.h>
@@ -49 +50 @@
         instance->max_packet_size = max_packet_size;
         instance->toggle = 0;
+        instance->active = false;
+        fibril_mutex_initialize(&instance->guard);
+        fibril_condvar_initialize(&instance->avail);
         link_initialize(&instance->same_device_eps);
         return EOK;
@@ -56 +60 @@
 {
         assert(instance);
+        assert(!instance->active);
         list_remove(&instance->same_device_eps);
         free(instance);
+}
+/*----------------------------------------------------------------------------*/
+void endpoint_use(endpoint_t *instance)
+{
+        assert(instance);
+        fibril_mutex_lock(&instance->guard);
+        while (instance->active)
+                fibril_condvar_wait(&instance->avail, &instance->guard);
+        instance->active = true;
+        fibril_mutex_unlock(&instance->guard);
+}
+/*----------------------------------------------------------------------------*/
+void endpoint_release(endpoint_t *instance)
+{
+        assert(instance);
+        fibril_mutex_lock(&instance->guard);
+        instance->active = false;
+        fibril_mutex_unlock(&instance->guard);
+        fibril_condvar_signal(&instance->avail);
 }
 /*----------------------------------------------------------------------------*/