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freetdm: add debug stacktrace to track spurious channel_on_hangup call

This commit is contained in:
Moises Silva 2011-09-12 18:12:12 -04:00
parent 408adb8d0c
commit 4ed900eb92
1 changed files with 32 additions and 2 deletions
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34
libs/freetdm/mod_freetdm/mod_freetdm.c
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@ -34,6 +34,15 @@
#include <switch.h>
#include "freetdm.h"
//#define CUDATEL_DEBUG
#ifdef CUDATEL_DEBUG
#ifndef _BSD_SOURCE
#define _BSD_SOURCE
#endif
#include <execinfo.h>
#include <syscall.h>
#endif
#ifndef __FUNCTION__
#define __FUNCTION__ __SWITCH_FUNC__
#endif
@ -495,6 +504,7 @@ static switch_status_t channel_on_hangup(switch_core_session_t *session)
switch_channel_t *channel = NULL;
private_t *tech_pvt = NULL;
ftdm_chan_type_t chantype;
const char *name = NULL;
uint32_t tokencnt;
channel = switch_core_session_get_channel(session);
@ -506,9 +516,29 @@ static switch_status_t channel_on_hangup(switch_core_session_t *session)
/* ignore any further I/O requests, we're hanging up already! */
switch_clear_flag_locked(tech_pvt, TFLAG_IO);
name = switch_channel_get_name(channel);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL HANGUP ENTER\n", name);
if (!tech_pvt->ftdmchan) {
goto end;
}
}
#ifdef CUDATEL_DEBUG
{
pid_t tid = 0;
size_t size = 0;
char **symbols = NULL;
void *stacktrace[50];
int si = 0;
size = backtrace(stacktrace, ftdm_array_len(stacktrace));
symbols = backtrace_symbols(stacktrace, size);
tid = syscall(SYS_gettid);
for (si = 0; si < size; si++) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "[%d] %s -> %s\n", tid, name, symbols[si]);
}
free(symbols);
}
#endif
ftdm_channel_clear_token(tech_pvt->ftdmchan, switch_core_session_get_uuid(session));
@ -551,7 +581,6 @@ static switch_status_t channel_on_hangup(switch_core_session_t *session)
end:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL HANGUP\n", switch_channel_get_name(channel));
switch_mutex_lock(globals.mutex);
globals.calls--;
if (globals.calls < 0) {
@ -559,6 +588,7 @@ static switch_status_t channel_on_hangup(switch_core_session_t *session)
}
switch_mutex_unlock(globals.mutex);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL HANGUP EXIT\n", name);
return SWITCH_STATUS_SUCCESS;
}