Commit | Line | Data |
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aee2ab67 JA |
1 | #include <stdio.h> |
2 | #include <stdlib.h> | |
3 | #include <stdarg.h> | |
4 | #include <unistd.h> | |
5 | #include <errno.h> | |
6 | #include <pthread.h> | |
7 | ||
8 | #include "smalloc.h" | |
9 | #include "log.h" | |
10 | #include "tp.h" | |
11 | ||
12 | static void tp_flush_work(struct flist_head *list) | |
13 | { | |
14 | struct tp_work *work; | |
15 | ||
16 | while (!flist_empty(list)) { | |
17 | work = flist_entry(list->next, struct tp_work, list); | |
18 | flist_del(&work->list); | |
19 | work->fn(work); | |
20 | } | |
21 | } | |
22 | ||
23 | static void *tp_thread(void *data) | |
24 | { | |
25 | struct tp_data *tdat = data; | |
26 | struct flist_head work_list; | |
27 | ||
28 | INIT_FLIST_HEAD(&work_list); | |
29 | ||
aee2ab67 JA |
30 | while (1) { |
31 | pthread_mutex_lock(&tdat->lock); | |
32 | ||
33 | if (!tdat->thread_exit && flist_empty(&tdat->work)) | |
34 | pthread_cond_wait(&tdat->cv, &tdat->lock); | |
35 | ||
36 | if (!flist_empty(&tdat->work)) { | |
37 | flist_splice(&tdat->work, &work_list); | |
38 | INIT_FLIST_HEAD(&tdat->work); | |
39 | } | |
40 | ||
41 | pthread_mutex_unlock(&tdat->lock); | |
42 | ||
43 | if (flist_empty(&work_list)) { | |
44 | if (tdat->thread_exit) | |
45 | break; | |
46 | continue; | |
47 | } | |
48 | ||
49 | tp_flush_work(&work_list); | |
50 | } | |
51 | ||
aee2ab67 JA |
52 | return NULL; |
53 | } | |
54 | ||
55 | void tp_queue_work(struct tp_data *tdat, struct tp_work *work) | |
56 | { | |
57 | work->done = 0; | |
58 | ||
59 | pthread_mutex_lock(&tdat->lock); | |
60 | flist_add_tail(&work->list, &tdat->work); | |
61 | pthread_cond_signal(&tdat->cv); | |
62 | pthread_mutex_unlock(&tdat->lock); | |
63 | } | |
64 | ||
65 | void tp_init(struct tp_data **tdatp) | |
66 | { | |
67 | struct tp_data *tdat; | |
68 | int ret; | |
69 | ||
70 | if (*tdatp) | |
71 | return; | |
72 | ||
73 | *tdatp = tdat = smalloc(sizeof(*tdat)); | |
74 | pthread_mutex_init(&tdat->lock, NULL); | |
75 | INIT_FLIST_HEAD(&tdat->work); | |
76 | pthread_cond_init(&tdat->cv, NULL); | |
77 | pthread_cond_init(&tdat->sleep_cv, NULL); | |
78 | ||
79 | ret = pthread_create(&tdat->thread, NULL, tp_thread, tdat); | |
80 | if (ret) | |
81 | log_err("fio: failed to create tp thread\n"); | |
82 | } | |
83 | ||
84 | void tp_exit(struct tp_data **tdatp) | |
85 | { | |
86 | struct tp_data *tdat = *tdatp; | |
87 | void *ret; | |
88 | ||
89 | if (!tdat) | |
90 | return; | |
91 | ||
92 | tdat->thread_exit = 1; | |
93 | pthread_mutex_lock(&tdat->lock); | |
94 | pthread_cond_signal(&tdat->cv); | |
95 | pthread_mutex_unlock(&tdat->lock); | |
96 | ||
97 | pthread_join(tdat->thread, &ret); | |
98 | ||
99 | sfree(tdat); | |
100 | *tdatp = NULL; | |
101 | } |