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Merge "lock: Improve performance of DEBUG_THREADS."

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This commit is contained in:
Joshua Colp
2018-10-01 08:32:49 -05:00
committed by Gerrit Code Review
parent 02bb329bb5 205c6be895
commit 69f4740fa1
4 changed files with 81 additions and 90 deletions
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3
include/asterisk/astobj2.h
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@@ -752,6 +752,9 @@ int __ao2_trylock(void *a, enum ao2_lock_req lock_how, const char *file, const c
* lock address, this allows you to correlate against
* object address, to match objects to reported locks.
*
* \warning AO2 lock objects do not include tracking fields when
* DEBUG_THREADS is not enabled.
*
* \since 1.6.1
*/
void *ao2_object_get_lockaddr(void *obj);

39
include/asterisk/lock.h
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@@ -92,11 +92,11 @@
#define AST_LOCK_TRACK_INIT_VALUE { { NULL }, { 0 }, 0, { NULL }, { 0 }, PTHREAD_MUTEX_INIT_VALUE }
#endif
#define AST_MUTEX_INIT_VALUE { PTHREAD_MUTEX_INIT_VALUE, NULL, 1 }
#define AST_MUTEX_INIT_VALUE_NOTRACKING { PTHREAD_MUTEX_INIT_VALUE, NULL, 0 }
#define AST_MUTEX_INIT_VALUE { PTHREAD_MUTEX_INIT_VALUE, NULL, {1, 0} }
#define AST_MUTEX_INIT_VALUE_NOTRACKING { PTHREAD_MUTEX_INIT_VALUE, NULL, {0, 0} }
#define AST_RWLOCK_INIT_VALUE { __AST_RWLOCK_INIT_VALUE, NULL, 1 }
#define AST_RWLOCK_INIT_VALUE_NOTRACKING { __AST_RWLOCK_INIT_VALUE, NULL, 0 }
#define AST_RWLOCK_INIT_VALUE { __AST_RWLOCK_INIT_VALUE, NULL, {1, 0} }
#define AST_RWLOCK_INIT_VALUE_NOTRACKING { __AST_RWLOCK_INIT_VALUE, NULL, {0, 0} }
#define AST_MAX_REENTRANCY 10
@@ -120,6 +120,13 @@ struct ast_lock_track {
pthread_mutex_t reentr_mutex;
};
struct ast_lock_track_flags {
/*! non-zero if lock tracking is enabled */
unsigned int tracking:1;
/*! non-zero if track is setup */
volatile unsigned int setup:1;
};
/*! \brief Structure for mutex and tracking information.
*
* We have tracking information in this structure regardless of DEBUG_THREADS being enabled.
@@ -127,9 +134,18 @@ struct ast_lock_track {
*/
struct ast_mutex_info {
pthread_mutex_t mutex;
/*! Track which thread holds this mutex */
#if !defined(DEBUG_THREADS) && !defined(DEBUG_THREADS_LOOSE_ABI)
/*!
* These fields are renamed to ensure they are never used when
* DEBUG_THREADS is not defined.
*/
struct ast_lock_track *_track;
struct ast_lock_track_flags _flags;
#elif defined(DEBUG_THREADS)
/*! Track which thread holds this mutex. */
struct ast_lock_track *track;
unsigned int tracking:1;
struct ast_lock_track_flags flags;
#endif
};
/*! \brief Structure for rwlock and tracking information.
@@ -139,9 +155,18 @@ struct ast_mutex_info {
*/
struct ast_rwlock_info {
pthread_rwlock_t lock;
#if !defined(DEBUG_THREADS) && !defined(DEBUG_THREADS_LOOSE_ABI)
/*!
* These fields are renamed to ensure they are never used when
* DEBUG_THREADS is not defined.
*/
struct ast_lock_track *_track;
struct ast_lock_track_flags _flags;
#elif defined(DEBUG_THREADS)
/*! Track which thread holds this lock */
struct ast_lock_track *track;
unsigned int tracking:1;
struct ast_lock_track_flags flags;
#endif
};
typedef struct ast_mutex_info ast_mutex_t;