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add simple ref counting debugging framework

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This commit is contained in:
Lennart Poettering 2009-03-25 02:42:18 +01:00
parent 577259bb15
commit e41ec51f1b
2 changed files with 81 additions and 6 deletions
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44
src/pulsecore/refcnt.h
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@ -23,23 +23,59 @@
***/
#include <pulsecore/atomic.h>
#include <pulsecore/macro.h>
#include <pulsecore/log.h>
/* #define DEBUG_REF */
#define PA_REFCNT_DECLARE \
pa_atomic_t _ref
#define PA_REFCNT_INIT(p) \
pa_atomic_store(&(p)->_ref, 1)
#define PA_REFCNT_VALUE(p) \
pa_atomic_load(&(p)->_ref)
#define PA_REFCNT_INIT_ZERO(p) \
pa_atomic_store(&(p)->_ref, 0)
#ifndef DEBUG_REF
#define PA_REFCNT_INIT(p) \
pa_atomic_store(&(p)->_ref, 1)
#define PA_REFCNT_INC(p) \
pa_atomic_inc(&(p)->_ref)
#define PA_REFCNT_DEC(p) \
(pa_atomic_dec(&(p)->_ref)-1)
#define PA_REFCNT_VALUE(p) \
pa_atomic_load(&(p)->_ref)
#else
/* If you need to debug ref counting problems define DEBUG_REF and
* set $PULSE_LOG_BACKTRACE=5 or suchlike in the shell when running
* PA */
#define PA_REFCNT_INIT(p) \
do { \
pa_atomic_store(&(p)->_ref, 1); \
pa_log("REF: Init %p", p); \
} while (FALSE)
#define PA_REFCNT_INC(p) \
do { \
pa_atomic_inc(&(p)->_ref); \
pa_log("REF: Inc %p", p); \
} while (FALSE) \
#define PA_REFCNT_DEC(p) \
({ \
int _j = (pa_atomic_dec(&(p)->_ref)-1); \
if (_j <= 0) \
pa_log("REF: Done %p", p); \
else \
pa_log("REF: Dec %p", p); \
_j; \
})
#endif
#endif