diff -r 2ad83650d797 -r e3565cf7c831 ui/common/threadpool.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/common/threadpool.h	Sun Apr 07 21:56:56 2024 +0200
@@ -0,0 +1,85 @@
+/*
+ * 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.
+ */
+
+#ifndef UIC_THREADPOOL_H
+#define UIC_THREADPOOL_H
+
+#include "../ui/toolkit.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+    
+    
+typedef struct UiJob {
+    UiObject      *obj;
+    ui_threadfunc job_func;
+    void          *job_data;
+    ui_callback   finish_callback;
+    void          *finish_data;
+} UiJob;
+    
+    
+typedef struct  _threadpool_job   threadpool_job;
+typedef void*(*job_callback_f)(void *data);
+    
+typedef struct _pool_queue pool_queue_t;
+struct UiThreadpool {
+    pthread_mutex_t queue_lock;
+    pthread_mutex_t avlbl_lock;
+    pthread_cond_t  available;
+    pool_queue_t    *queue;
+    uint32_t        queue_len;
+    uint32_t        num_idle;
+    int             min_threads;
+    int             max_threads;
+};
+
+struct _threadpool_job {
+    job_callback_f      callback;
+    void                *data;
+};
+
+struct _pool_queue {
+    threadpool_job   *job;
+    pool_queue_t     *next;
+};
+
+UiThreadpool* threadpool_new(int min, int max);
+int threadpool_start(UiThreadpool *pool);
+void* threadpool_func(void *data);
+threadpool_job* threadpool_get_job(UiThreadpool *pool);
+void threadpool_run(UiThreadpool *pool, job_callback_f func, void *data);
+void threadpool_enqueue_job(UiThreadpool *pool, threadpool_job *job);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* UIC_THREADPOOL_H */
+