1 files changed, 35 insertions, 0 deletions
diff --git a/src/mainloop-api.c b/src/mainloop-api.c
new file mode 100644
index 00000000..6caa0c25
--- /dev/null
+++ b/src/mainloop-api.c
@@ -0,0 +1,35 @@
+#include <assert.h>
+#include <stdlib.h>
+#include "mainloop-api.h"
+
+struct once_info {
+    void (*callback)(void *userdata);
+    void *userdata;
+};
+
+static void once_callback(struct pa_mainloop_api *api, void *id, void *userdata) {
+    struct once_info *i = userdata;
+    assert(api && i && i->callback);
+    i->callback(i->userdata);
+    assert(api->cancel_fixed);
+    api->cancel_fixed(api, id);
+    free(i);
+}
+
+void pa_mainloop_api_once(struct pa_mainloop_api* api, void (*callback)(void *userdata), void *userdata) {
+    struct once_info *i;
+    void *id;
+    assert(api && callback);
+
+    i = malloc(sizeof(struct once_info));
+    assert(i);
+    i->callback = callback;
+    i->userdata = userdata;
+
+    assert(api->source_fixed);
+    id = api->source_fixed(api, once_callback, i);
+    assert(id);
+
+    /* Note: if the mainloop is destroyed before once_callback() was called, some memory is leaked. */
+}
+