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tunnel modules: Fix crash when the module was unloaded while waiting for re-init

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When the tunnel modules had no connection and a re-init was pending, the module
could be unloaded without cancelling the pending re-init. When the timer expired
in that situation, this lead to a crash. This patch fixes the problem by keeping
a reference when the module is scheduled to be re-initialized.

Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/705>
This commit is contained in:
Georg Chini 2022-05-18 18:22:46 +02:00 • committed by PulseAudio Marge Bot
parent c3d1db2f28
commit 363a384143
5 changed files with 233 additions and 61 deletions
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12
src/modules/restart-module.h
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@ -29,10 +29,20 @@ extern "C" {
#include <pulsecore/core.h>
#include <pulsecore/thread-mq.h>
/* Init and exit callbacks of the module */
typedef int (*init_cb)(pa_module *m);
typedef void (*done_cb)(pa_module *m);
/* Restart data structure */
typedef struct pa_restart_data pa_restart_data;
void pa_restart_module_reinit(pa_module *m, init_cb do_init, done_cb do_done, pa_usec_t restart_usec);
/* Tears down the module using the done callback and schedules a restart after restart_usec.
* Returns a handle to the restart event. When the init callback finishes successfully during
* restart or when the restart should be cancelled, the restart event must be destroyed using
* pa_restart_free(). */
pa_restart_data *pa_restart_module_reinit(pa_module *m, init_cb do_init, done_cb do_done, pa_usec_t restart_usec);
/* Free the restart event */
void pa_restart_free(pa_restart_data *data);
#ifdef __cplusplus
}