1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2024 Olaf Wintermann. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #ifndef UIC_THREADPOOL_H
30 #define UIC_THREADPOOL_H
31
32 #include "../ui/toolkit.h"
33
34 #ifndef _WIN32
35 #include <pthread.h>
36 #endif
37
38 #ifdef __cplusplus
39 extern "C" {
40 #endif
41
42 typedef struct UiQueueElm UiQueueElm;
43 typedef struct UiQueue UiQueue;
44
45 typedef struct UiJob {
46 UiObject *obj;
47 ui_threadfunc job_func;
48 void *job_data;
49 ui_callback finish_callback;
50 void *finish_data;
51 } UiJob;
52
53 struct UiQueueElm {
54 void *data;
55 UiQueueElm *next;
56 };
57
58 struct UiQueue {
59 UiQueueElm *elements;
60 size_t length;
61 pthread_mutex_t lock;
62 pthread_mutex_t avlbl_lock;
63 pthread_cond_t available;
64 };
65
66 typedef struct _threadpool_job threadpool_job;
67 typedef void*(*job_callback_f)(void *data);
68
69 typedef struct _pool_queue pool_queue_t;
70 struct UiThreadpool {
71 UiQueue *queue;
72 uint32_t num_idle;
73 int min_threads;
74 int max_threads;
75 pthread_t *threads;
76 int nthreads;
77 };
78
79 struct _threadpool_job {
80 job_callback_f callback;
81 void *data;
82 };
83
84 struct _pool_queue {
85 threadpool_job *job;
86 pool_queue_t *next;
87 };
88
89 UiThreadpool* threadpool_new(int min, int max);
90 int threadpool_start(UiThreadpool *pool);
91 int threadpool_join(UiThreadpool *pool);
92 void* threadpool_func(void *data);
93 threadpool_job* threadpool_get_job(UiThreadpool *pool);
94 void threadpool_run(UiThreadpool *pool, job_callback_f func, void *data);
95
96 UiQueue* ui_queue_create(void);
97 void ui_queue_free(UiQueue *queue);
98 void ui_queue_put(UiQueue *queue, void *data);
99 void* ui_queue_get_wait(UiQueue *queue);
100
101 #ifdef __cplusplus
102 }
103 #endif
104
105 #endif /* UIC_THREADPOOL_H */
106
107