hw/arm/virt: parameter passing cleanups
[qemu.git] / audio / audio_pt_int.c
1 #include "qemu/osdep.h"
2 #include "qemu-common.h"
3 #include "audio.h"
4
5 #define AUDIO_CAP "audio-pt"
6
7 #include "audio_int.h"
8 #include "audio_pt_int.h"
9
10 static void GCC_FMT_ATTR(3, 4) logerr (struct audio_pt *pt, int err,
11 const char *fmt, ...)
12 {
13 va_list ap;
14
15 va_start (ap, fmt);
16 AUD_vlog (pt->drv, fmt, ap);
17 va_end (ap);
18
19 AUD_log (NULL, "\n");
20 AUD_log (pt->drv, "Reason: %s\n", strerror (err));
21 }
22
23 int audio_pt_init (struct audio_pt *p, void *(*func) (void *),
24 void *opaque, const char *drv, const char *cap)
25 {
26 int err, err2;
27 const char *efunc;
28 sigset_t set, old_set;
29
30 p->drv = drv;
31
32 err = sigfillset (&set);
33 if (err) {
34 logerr (p, errno, "%s(%s): sigfillset failed", cap, AUDIO_FUNC);
35 return -1;
36 }
37
38 err = pthread_mutex_init (&p->mutex, NULL);
39 if (err) {
40 efunc = "pthread_mutex_init";
41 goto err0;
42 }
43
44 err = pthread_cond_init (&p->cond, NULL);
45 if (err) {
46 efunc = "pthread_cond_init";
47 goto err1;
48 }
49
50 err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
51 if (err) {
52 efunc = "pthread_sigmask";
53 goto err2;
54 }
55
56 err = pthread_create (&p->thread, NULL, func, opaque);
57
58 err2 = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
59 if (err2) {
60 logerr (p, err2, "%s(%s): pthread_sigmask (restore) failed",
61 cap, AUDIO_FUNC);
62 /* We have failed to restore original signal mask, all bets are off,
63 so terminate the process */
64 exit (EXIT_FAILURE);
65 }
66
67 if (err) {
68 efunc = "pthread_create";
69 goto err2;
70 }
71
72 return 0;
73
74 err2:
75 err2 = pthread_cond_destroy (&p->cond);
76 if (err2) {
77 logerr (p, err2, "%s(%s): pthread_cond_destroy failed", cap, AUDIO_FUNC);
78 }
79
80 err1:
81 err2 = pthread_mutex_destroy (&p->mutex);
82 if (err2) {
83 logerr (p, err2, "%s(%s): pthread_mutex_destroy failed", cap, AUDIO_FUNC);
84 }
85
86 err0:
87 logerr (p, err, "%s(%s): %s failed", cap, AUDIO_FUNC, efunc);
88 return -1;
89 }
90
91 int audio_pt_fini (struct audio_pt *p, const char *cap)
92 {
93 int err, ret = 0;
94
95 err = pthread_cond_destroy (&p->cond);
96 if (err) {
97 logerr (p, err, "%s(%s): pthread_cond_destroy failed", cap, AUDIO_FUNC);
98 ret = -1;
99 }
100
101 err = pthread_mutex_destroy (&p->mutex);
102 if (err) {
103 logerr (p, err, "%s(%s): pthread_mutex_destroy failed", cap, AUDIO_FUNC);
104 ret = -1;
105 }
106 return ret;
107 }
108
109 int audio_pt_lock (struct audio_pt *p, const char *cap)
110 {
111 int err;
112
113 err = pthread_mutex_lock (&p->mutex);
114 if (err) {
115 logerr (p, err, "%s(%s): pthread_mutex_lock failed", cap, AUDIO_FUNC);
116 return -1;
117 }
118 return 0;
119 }
120
121 int audio_pt_unlock (struct audio_pt *p, const char *cap)
122 {
123 int err;
124
125 err = pthread_mutex_unlock (&p->mutex);
126 if (err) {
127 logerr (p, err, "%s(%s): pthread_mutex_unlock failed", cap, AUDIO_FUNC);
128 return -1;
129 }
130 return 0;
131 }
132
133 int audio_pt_wait (struct audio_pt *p, const char *cap)
134 {
135 int err;
136
137 err = pthread_cond_wait (&p->cond, &p->mutex);
138 if (err) {
139 logerr (p, err, "%s(%s): pthread_cond_wait failed", cap, AUDIO_FUNC);
140 return -1;
141 }
142 return 0;
143 }
144
145 int audio_pt_unlock_and_signal (struct audio_pt *p, const char *cap)
146 {
147 int err;
148
149 err = pthread_mutex_unlock (&p->mutex);
150 if (err) {
151 logerr (p, err, "%s(%s): pthread_mutex_unlock failed", cap, AUDIO_FUNC);
152 return -1;
153 }
154 err = pthread_cond_signal (&p->cond);
155 if (err) {
156 logerr (p, err, "%s(%s): pthread_cond_signal failed", cap, AUDIO_FUNC);
157 return -1;
158 }
159 return 0;
160 }
161
162 int audio_pt_join (struct audio_pt *p, void **arg, const char *cap)
163 {
164 int err;
165 void *ret;
166
167 err = pthread_join (p->thread, &ret);
168 if (err) {
169 logerr (p, err, "%s(%s): pthread_join failed", cap, AUDIO_FUNC);
170 return -1;
171 }
172 *arg = ret;
173 return 0;
174 }