diff -r 1ce14068ef31 -r 294d5515583a ui/common/condvar.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/common/condvar.c	Wed Oct 23 17:40:45 2024 +0200
@@ -0,0 +1,70 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2024 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "condvar.h"
+
+
+
+UiCondVar* ui_condvar_create(void) {
+    UiPosixCondVar *var = malloc(sizeof(UiPosixCondVar));
+    var->var.data = NULL;
+    var->var.intdata = 0;
+    var->set = 0;
+    pthread_mutex_init(&var->lock, NULL);
+    pthread_cond_init(&var->cond, NULL);
+    return (UiCondVar*)var;
+}
+
+void ui_condvar_wait(UiCondVar *var) {
+    UiPosixCondVar *p = (UiPosixCondVar*)var;
+    pthread_mutex_lock(&p->lock);
+    if(!p->set) {
+        pthread_cond_wait(&p->cond, &p->lock);
+    }
+    p->set = 0;
+    pthread_mutex_unlock(&p->lock);
+    
+}
+
+void ui_condvar_signal(UiCondVar *var, void *data, int intdata) {
+    UiPosixCondVar *p = (UiPosixCondVar*)var;
+    pthread_mutex_lock(&p->lock);
+    p->var.data = data;
+    p->var.intdata = intdata;
+    p->set = 1;
+    pthread_cond_signal(&p->cond);
+    pthread_mutex_unlock(&p->lock);
+}
+
+void ui_condvar_destroy(UiCondVar *var) {
+    UiPosixCondVar *p = (UiPosixCondVar*)var;
+    pthread_mutex_destroy(&p->lock);
+    pthread_cond_destroy(&p->cond);
+    free(p);
+    
+}