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host/mobile: Adding memory leak debugging 

When mobile exits, a list of allocated memory chunks are dumped to
stderr. This helps to find talloc_free / msgb_free leaks.

During process, a SIGUSR1 or SIGUSR2 can be used to dump currently
allocated memory chunks.

Written-by: Andreas Eversberg <jolly@eversberg.eu>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Andreas Eversberg 2011-11-05 10:05:40 +01:00 committed by Sylvain Munaut
parent 321e3ae2fb
commit 0be0680ab5
1 changed files with 34 additions and 6 deletions
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40
src/host/layer23/src/mobile/main.c
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@ -147,13 +147,30 @@ void sighandler(int sigset)
fprintf(stderr, "Signal %d received.\n", sigset);
/* in case there is a lockup during exit */
signal(SIGINT, SIG_DFL);
signal(SIGHUP, SIG_DFL);
signal(SIGTERM, SIG_DFL);
signal(SIGPIPE, SIG_DFL);
switch (sigset) {
case SIGINT:
/* If another signal is received afterwards, the program
* is terminated without finishing shutdown process.
*/
signal(SIGINT, SIG_DFL);
signal(SIGHUP, SIG_DFL);
signal(SIGTERM, SIG_DFL);
signal(SIGPIPE, SIG_DFL);
signal(SIGABRT, SIG_DFL);
signal(SIGUSR1, SIG_DFL);
signal(SIGUSR2, SIG_DFL);
osmo_signal_dispatch(SS_GLOBAL, S_GLOBAL_SHUTDOWN, NULL);
osmo_signal_dispatch(SS_GLOBAL, S_GLOBAL_SHUTDOWN, NULL);
break;
case SIGABRT:
/* in case of abort, we want to obtain a talloc report
* and then return to the caller, who will abort the process
*/
case SIGUSR1:
case SIGUSR2:
talloc_report_full(l23_ctx, stderr);
break;
}
}
int main(int argc, char **argv)
@ -176,6 +193,7 @@ int main(int argc, char **argv)
log_set_all_filter(stderr_target, 1);
l23_ctx = talloc_named_const(NULL, 1, "layer2 context");
msgb_set_talloc_ctx(l23_ctx);
handle_options(argc, argv);
@ -214,6 +232,9 @@ int main(int argc, char **argv)
signal(SIGHUP, sighandler);
signal(SIGTERM, sighandler);
signal(SIGPIPE, sighandler);
signal(SIGABRT, sighandler);
signal(SIGUSR1, sighandler);
signal(SIGUSR2, sighandler);
if (daemonize) {
printf("Running as daemon\n");
@ -231,5 +252,12 @@ int main(int argc, char **argv)
l23_app_exit();
if (config_file)
talloc_free(config_file);
if (config_dir)
talloc_free(config_dir);
talloc_report_full(l23_ctx, stderr);
return 0;
}