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slave handler update. add timestamps to relays, allows slave thread to

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process them better. This simplifies various checks and sits better with
relay startup and relay cleanup in certain error cases.

svn path=/icecast/trunk/icecast/; revision=11008
This commit is contained in:
Karl Heyes 2006-03-15 03:02:08 +00:00
parent 9e96120398
commit 0dc2655838
4 changed files with 41 additions and 51 deletions
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1
src/auth.c
View File

@ -318,7 +318,6 @@ static int add_client_to_source (source_t *source, client_t *client)
/* enable on-demand relay to start, wake up the slave thread */
DEBUG0("kicking off on-demand relay");
source->on_demand_req = 1;
slave_rescan ();
}
DEBUG1 ("Added client to %s", source->mount);
return 0;

2
src/auth.h
View File

@ -35,7 +35,7 @@ typedef enum
AUTH_FORBIDDEN,
AUTH_USERADDED,
AUTH_USEREXISTS,
AUTH_USERDELETED,
AUTH_USERDELETED
} auth_result;
typedef struct auth_client_tag

87
src/slave.c
View File

@ -65,7 +65,6 @@ static thread_type *_slave_thread_id;
static int slave_running = 0;
static int update_settings = 0;
static volatile unsigned int max_interval = 0;
static volatile int rescan_relays = 0;
relay_server *relay_free (relay_server *relay)
{
@ -116,22 +115,12 @@ void slave_recheck_mounts (void)
}
/* Request slave thread to rescan the existing relays to see if any need
* starting up, eg on-demand relays
*/
void slave_rescan (void)
{
rescan_relays = 1;
}
/* Request slave thread to check the relay list for changes and to
* update the stats for the current streams.
*/
void slave_rebuild_mounts (void)
{
update_settings = 1;
rescan_relays = 1;
}
@ -249,6 +238,7 @@ static void *start_relay_stream (void *arg)
break;
}
global_unlock ();
sock_set_blocking (streamsock, SOCK_NONBLOCK);
con = NULL;
parser = NULL;
client_set_queue (src->client, NULL);
@ -268,11 +258,11 @@ static void *start_relay_stream (void *arg)
/* only keep refreshing YP entries for inactive on-demand relays */
yp_remove (relay->localmount);
relay->source->yp_public = -1;
relay->start = time(NULL) + 10; /* prevent busy looping if failing */
}
/* initiate an immediate relay cleanup run */
/* we've finished, now get cleaned up */
relay->cleanup = 1;
rescan_relays = 1;
return NULL;
} while (0);
@ -299,9 +289,9 @@ static void *start_relay_stream (void *arg)
src->parser = NULL;
source_clear_source (relay->source);
/* initiate an immediate relay cleanup run */
/* cleanup relay, but prevent this relay from starting up again too soon */
relay->start = time(NULL) + max_interval;
relay->cleanup = 1;
rescan_relays = 1;
return NULL;
}
@ -321,25 +311,21 @@ static void check_relay_stream (relay_server *relay)
/* new relay, reserve the name */
relay->source = source_reserve (relay->localmount);
if (relay->source)
{
DEBUG1("Adding relay source at mountpoint \"%s\"", relay->localmount);
slave_rebuild_mounts();
}
else
WARN1 ("new relay but source \"%s\" already exists", relay->localmount);
}
do
{
source_t *source = relay->source;
if (relay->source == NULL || relay->running)
/* skip relay if active, not configured or just not time yet */
if (relay->source == NULL || relay->running || relay->start > time(NULL))
break;
if (relay->on_demand)
if (relay->on_demand && source->on_demand_req == 0)
{
ice_config_t *config = config_get_config ();
mount_proxy *mountinfo = config_find_mount (config, relay->localmount);
if (mountinfo == NULL)
source_update_settings (config, relay->source, mountinfo);
config_release_config ();
slave_rebuild_mounts();
stats_event (relay->localmount, "listeners", "0");
relay->source->on_demand = relay->on_demand;
if (source->fallback_mount && source->fallback_override)
@ -359,17 +345,21 @@ static void check_relay_stream (relay_server *relay)
break;
}
relay->start = time(NULL) + 5;
relay->thread = thread_create ("Relay Thread", start_relay_stream,
relay, THREAD_ATTACHED);
return;
} while(0);
} while (0);
/* the relay thread may of shut down itself */
if (relay->cleanup && relay->thread)
if (relay->cleanup)
{
DEBUG1 ("waiting for relay thread for \"%s\"", relay->localmount);
thread_join (relay->thread);
relay->thread = NULL;
if (relay->thread)
{
DEBUG1 ("waiting for relay thread for \"%s\"", relay->localmount);
thread_join (relay->thread);
relay->thread = NULL;
}
relay->cleanup = 0;
relay->running = 0;
@ -469,7 +459,8 @@ update_relays (relay_server **relay_list, relay_server *new_relay_list)
}
static void relay_check_streams (relay_server *to_start, relay_server *to_free)
static void relay_check_streams (relay_server *to_start,
relay_server *to_free, int skip_timer)
{
relay_server *relay;
@ -494,6 +485,8 @@ static void relay_check_streams (relay_server *to_start, relay_server *to_free)
relay = to_start;
while (relay)
{
if (skip_timer)
relay->start = 0;
check_relay_stream (relay);
relay = relay->next;
}
@ -584,8 +577,8 @@ static int update_from_master(ice_config_t *config)
thread_mutex_lock (&(config_locks()->relay_lock));
cleanup_relays = update_relays (&global.master_relays, new_relays);
relay_check_streams (global.master_relays, cleanup_relays);
relay_check_streams (NULL, new_relays);
relay_check_streams (global.master_relays, cleanup_relays, 0);
relay_check_streams (NULL, new_relays, 0);
thread_mutex_unlock (&(config_locks()->relay_lock));
@ -611,7 +604,8 @@ static void *_slave_thread(void *arg)
while (1)
{
relay_server *cleanup_relays;
relay_server *cleanup_relays = NULL;
int skip_timer = 0;
/* re-read xml file if requested */
if (global . schedule_config_reread)
@ -623,8 +617,8 @@ static void *_slave_thread(void *arg)
thread_sleep (1000000);
if (slave_running == 0)
break;
if (rescan_relays == 0 && max_interval > ++interval)
continue;
++interval;
/* only update relays lists when required */
if (max_interval <= interval)
@ -632,6 +626,8 @@ static void *_slave_thread(void *arg)
DEBUG0 ("checking master stream list");
config = config_get_config();
if (max_interval == 0)
skip_timer = 1;
interval = 0;
max_interval = config->master_update_interval;
@ -644,19 +640,14 @@ static void *_slave_thread(void *arg)
cleanup_relays = update_relays (&global.relays, config->relay);
config_release_config();
relay_check_streams (global.relays, cleanup_relays);
thread_mutex_unlock (&(config_locks()->relay_lock));
}
else
{
DEBUG0 ("rescanning relay lists");
thread_mutex_lock (&(config_locks()->relay_lock));
relay_check_streams (global.master_relays, NULL);
relay_check_streams (global.relays, NULL);
thread_mutex_unlock (&(config_locks()->relay_lock));
}
rescan_relays = 0;
relay_check_streams (global.relays, cleanup_relays, skip_timer);
relay_check_streams (global.master_relays, NULL, skip_timer);
thread_mutex_unlock (&(config_locks()->relay_lock));
if (update_settings)
{
update_settings = 0;
@ -664,8 +655,8 @@ static void *_slave_thread(void *arg)
}
}
DEBUG0 ("shutting down current relays");
relay_check_streams (NULL, global.relays);
relay_check_streams (NULL, global.master_relays);
relay_check_streams (NULL, global.relays, 0);
relay_check_streams (NULL, global.master_relays, 0);
INFO0 ("Slave thread shutdown complete");

2
src/slave.h
View File

@ -27,6 +27,7 @@ typedef struct _relay_server {
int on_demand;
int running;
int cleanup;
time_t start;
thread_type *thread;
struct _relay_server *next;
} relay_server;
@ -36,7 +37,6 @@ void slave_initialize(void);
void slave_shutdown(void);
void slave_recheck_mounts (void);
void slave_rebuild_mounts (void);
void slave_rescan (void);
relay_server *relay_free (relay_server *relay);
#endif /* __SLAVE_H__ */