2 #define _POSIX_C_SOURCE 200809L
17 void init_sync_flag(struct sync_flag *s) {
18 assert(pthread_mutex_init(&s->mutex, NULL) == 0);
19 assert(pthread_cond_init(&s->cond, NULL) == 0);
23 void set_sync_flag(struct sync_flag *s, bool value) {
24 assert(pthread_mutex_lock(&s->mutex) == 0);
26 assert(pthread_cond_broadcast(&s->cond) == 0);
27 assert(pthread_mutex_unlock(&s->mutex) == 0);
30 void reset_sync_flag(struct sync_flag *s) {
31 assert(pthread_mutex_lock(&s->mutex) == 0);
33 assert(pthread_mutex_unlock(&s->mutex) == 0);
36 bool check_sync_flag(struct sync_flag *s) {
38 assert(pthread_mutex_lock(&s->mutex) == 0);
40 assert(pthread_mutex_unlock(&s->mutex) == 0);
44 bool wait_sync_flag(struct sync_flag *s, int seconds) {
45 struct timespec timeout;
46 clock_gettime(CLOCK_REALTIME, &timeout);
47 timeout.tv_sec += seconds;
49 assert(pthread_mutex_lock(&s->mutex) == 0);
52 if(!pthread_cond_timedwait(&s->cond, &s->mutex, &timeout) || errno != EINTR) {
57 assert(pthread_mutex_unlock(&s->mutex) == 0);
62 void link_meshlink_pair(meshlink_handle_t *a, meshlink_handle_t *b) {
63 // Import and export both side's data
65 assert(meshlink_set_canonical_address(a, meshlink_get_self(a), "localhost", NULL));
66 assert(meshlink_set_canonical_address(b, meshlink_get_self(b), "localhost", NULL));
68 char *data = meshlink_export(a);
70 assert(meshlink_import(b, data));
73 data = meshlink_export(b);
75 assert(meshlink_import(a, data));
79 void open_meshlink_pair(meshlink_handle_t **pa, meshlink_handle_t **pb, const char *prefix) {
80 // Create two new MeshLink instances
84 char *a_name, *b_name;
86 assert(asprintf(&a_name, "%s_conf.1", prefix) > 0);
89 assert(asprintf(&b_name, "%s_conf.2", prefix) > 0);
92 assert(meshlink_destroy(a_name));
93 assert(meshlink_destroy(b_name));
95 meshlink_handle_t *a = meshlink_open(a_name, "a", prefix, DEV_CLASS_BACKBONE);
98 meshlink_handle_t *b = meshlink_open(b_name, "b", prefix, DEV_CLASS_BACKBONE);
104 meshlink_enable_discovery(a, false);
105 meshlink_enable_discovery(b, false);
107 link_meshlink_pair(a, b);
113 void open_meshlink_pair_ephemeral(meshlink_handle_t **pa, meshlink_handle_t **pb, const char *prefix) {
114 // Create two new MeshLink instances
118 meshlink_handle_t *a = meshlink_open_ephemeral("a", prefix, DEV_CLASS_BACKBONE);
119 meshlink_handle_t *b = meshlink_open_ephemeral("b", prefix, DEV_CLASS_BACKBONE);
124 meshlink_enable_discovery(a, false);
125 meshlink_enable_discovery(b, false);
127 link_meshlink_pair(a, b);
133 // Don't poll in the application thread, use a condition variable to signal when the peer is online.
134 static void pair_status_cb(meshlink_handle_t *mesh, meshlink_node_t *node, bool reachable) {
137 if(reachable && meshlink_get_self(mesh) != node) {
138 set_sync_flag(mesh->priv, true);
142 void start_meshlink_pair(meshlink_handle_t *a, meshlink_handle_t *b) {
143 struct sync_flag pair_status = {.flag = false};
144 init_sync_flag(&pair_status);
146 a->priv = &pair_status;
147 meshlink_set_node_status_cb(a, pair_status_cb);
149 assert(meshlink_start(a));
150 assert(meshlink_start(b));
152 assert(wait_sync_flag(&pair_status, 5));
154 meshlink_set_node_status_cb(a, NULL);
158 void stop_meshlink_pair(meshlink_handle_t *a, meshlink_handle_t *b) {
163 void close_meshlink_pair(meshlink_handle_t *a, meshlink_handle_t *b) {
168 void log_cb(meshlink_handle_t *mesh, meshlink_log_level_t level, const char *text) {
169 static const char *levelstr[] = {
170 [MESHLINK_DEBUG] = "DEBUG",
171 [MESHLINK_INFO] = "INFO",
172 [MESHLINK_WARNING] = "WARNING",
173 [MESHLINK_ERROR] = "ERROR",
174 [MESHLINK_CRITICAL] = "CRITICAL",
177 static struct timespec ts0;
180 clock_gettime(CLOCK_MONOTONIC, &ts);
182 if(ts0.tv_sec == 0) {
186 float diff = (ts.tv_sec - ts0.tv_sec) + (ts.tv_nsec - ts0.tv_nsec) * 1e-9;
188 fprintf(stderr, "%7.3f (%s) [%s] %s\n",
190 mesh ? mesh->name : "",