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crash prevention

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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@1281 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale
2006-04-27 21:09:58 +00:00
parent 24627a7a4b
commit 5ab733c606
5 changed files with 72 additions and 2 deletions
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44
src/switch_core.c
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@@ -36,6 +36,7 @@
#define SWITCH_EVENT_QUEUE_LEN 256
#define SWITCH_SQL_QUEUE_LEN 2000
#define SWITCH_THREAD_JMP_KEY "JMP_KEY"
struct switch_core_session {
uint32_t id;
@@ -83,6 +84,7 @@ struct switch_core_runtime {
uint32_t session_id;
apr_pool_t *memory_pool;
switch_hash *session_table;
switch_hash *stack_table;
switch_core_db *db;
switch_core_db *event_db;
const struct switch_state_handler_table *state_handlers[SWITCH_MAX_STATE_HANDLERS];
@@ -1811,12 +1813,50 @@ SWITCH_DECLARE(unsigned int) switch_core_session_runing(switch_core_session *ses
return session->thread_running;
}
static int handle_fatality(int sig)
{
switch_thread_id thread_id;
jmp_buf *env;
if (sig && (thread_id = switch_thread_self()) && (env = (jmp_buf *) apr_hash_get(runtime.stack_table, &thread_id, sizeof(thread_id)))) {
longjmp(*env, sig);
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Caught SEGV for unmapped thread!");
abort();
}
return 0;
}
SWITCH_DECLARE(void) switch_core_session_run(switch_core_session *session)
{
switch_channel_state state = CS_NEW, laststate = CS_HANGUP, midstate = CS_DONE;
const switch_endpoint_interface *endpoint_interface;
const switch_state_handler_table *driver_state_handler = NULL;
const switch_state_handler_table *application_state_handler = NULL;
switch_thread_id thread_id = switch_thread_self();
jmp_buf env;
int sig;
signal(SIGSEGV, (void *) handle_fatality);
signal(SIGFPE, (void *) handle_fatality);
#ifndef WIN32
signal(SIGBUS, (void *) handle_fatality);
#endif
if ((sig = setjmp(env)) != 0) {
switch_event *event;
if (switch_event_create(&event, SWITCH_EVENT_SESSION_CRASH) == SWITCH_STATUS_SUCCESS) {
switch_channel_event_set_data(session->channel, event);
switch_event_fire(&event);
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Thread has crashed for channel %s\n", switch_channel_get_name(session->channel));
switch_channel_hangup(session->channel, SWITCH_CAUSE_CRASH);
} else {
apr_hash_set(runtime.stack_table, &thread_id, sizeof(thread_id), &env);
}
/*
Life of the channel. you have channel and pool in your session
@@ -1850,7 +1890,6 @@ SWITCH_DECLARE(void) switch_core_session_run(switch_core_session *session)
int proceed = 1;
midstate = state;
switch (state) {
case CS_NEW: /* Just created, Waiting for first instructions */
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "(%s) State NEW\n", switch_channel_get_name(session->channel));
@@ -2091,6 +2130,8 @@ SWITCH_DECLARE(void) switch_core_session_run(switch_core_session *session)
}
}
apr_hash_set(runtime.stack_table, &thread_id, sizeof(thread_id), NULL);
session->thread_running = 0;
}
@@ -2650,6 +2691,7 @@ SWITCH_DECLARE(switch_status) switch_core_init(char *console)
runtime.session_id = 1;
switch_core_hash_init(&runtime.session_table, runtime.memory_pool);
switch_core_hash_init(&runtime.stack_table, runtime.memory_pool);
time(&runtime.initiated);
return SWITCH_STATUS_SUCCESS;