void link_push(Link* link ,M_Node* node){
link_lock(link);
if (!link->rear) {
link->front = link->rear = node;
}else{
link->rear->next = node;
link->rear = node;
}
link->node_count ++;
link->size += node->data_buffer_size;
link_unlock(link);
}
void
link_wait (void)
{
if (!(link_is_thread_safe && link_is_io_in_thread)) {
link_unlock ();
link_main_iteration (TRUE);
link_lock ();
} else {
g_assert (link_main_cond != NULL);
g_cond_wait (link_main_cond, link_main_lock);
}
}
static int
ln_lock(
char * res, /* name of resource to lock */
int op) /* true to lock; false to unlock */
{
long mypid;
char *lockfile = NULL;
char *tlockfile = NULL;
char *mres = NULL;
int rc;
char pid_str[NUM_STR_SIZE];
mypid = (long)getpid();
lockfile = g_strjoin(NULL, _lnlock_dir, "/am", res, ".lock", NULL);
if (!op) {
/* unlock the resource */
assert(read_lock(lockfile) == mypid);
(void)delete_lock(lockfile);
amfree(lockfile);
return 0;
}
/* lock the resource */
g_snprintf(pid_str, sizeof(pid_str), "%ld", mypid);
tlockfile = g_strjoin(NULL, _lnlock_dir, "/am", res, ".", pid_str, NULL);
(void)create_lock(tlockfile, mypid);
mres = stralloc2(res, ".");
while(1) {
rc = link_lock(lockfile, tlockfile);
if (rc == -1) break;
if (rc == 0) break;
rc = steal_lock(lockfile, mypid, mres);
if (rc == -1) break;
if (rc == 0) continue;
sleep(1);
}
(void) delete_lock(tlockfile);
amfree(mres);
amfree(tlockfile);
amfree(lockfile);
return rc;
}
M_Node* link_pop(Link* link){
link_lock(link);
M_Node* node = link->front;
if(node){
link->front = node->next;
if(!link->front){
link->rear = link->front;
}
node->next = NULL;
link->node_count --;
link->size -= node->data_buffer_size;
}
link_unlock(link);
return node;
}
static void
link_exec_set_io_thread (gpointer data, gboolean immediate)
{
GError *error = NULL;
gboolean to_io_thread = TRUE;
if (link_is_io_in_thread)
return;
link_lock ();
g_mutex_lock (link_cmd_queue_lock);
link_is_io_in_thread = TRUE;
link_thread_context = g_main_context_new ();
link_thread_loop = g_main_loop_new (link_thread_context, TRUE);
link_connections_move_io_T (to_io_thread);
link_servers_move_io_T (to_io_thread);
if (link_pipe (link_wakeup_fds) < 0)
g_error ("Can't create CORBA main-thread wakeup pipe");
link_main_source = link_source_create_watch
(link_thread_context, LINK_WAKEUP_POLL,
NULL, (G_IO_IN | G_IO_PRI),
link_mainloop_handle_input, NULL);
link_io_thread = g_thread_create_full
(link_io_thread_fn, NULL, 256 * 1024, TRUE, FALSE,
G_THREAD_PRIORITY_NORMAL, &error);
if (!link_io_thread || error)
g_error ("Failed to create linc worker thread");
g_main_loop_quit (link_loop);
g_mutex_unlock (link_cmd_queue_lock);
link_unlock ();
}
