diff options
Diffstat (limited to 'libnetdata/locks/locks.h')
| -rw-r--r-- | libnetdata/locks/locks.h | 62 |
1 files changed, 53 insertions, 9 deletions
diff --git a/libnetdata/locks/locks.h b/libnetdata/locks/locks.h index 850dd7ebc..796b53c6d 100644 --- a/libnetdata/locks/locks.h +++ b/libnetdata/locks/locks.h @@ -4,14 +4,55 @@ #define NETDATA_LOCKS_H 1 #include "../libnetdata.h" +#include "../clocks/clocks.h" typedef pthread_mutex_t netdata_mutex_t; #define NETDATA_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER -typedef pthread_rwlock_t netdata_rwlock_t; -#define NETDATA_RWLOCK_INITIALIZER PTHREAD_RWLOCK_INITIALIZER +#ifdef NETDATA_TRACE_RWLOCKS +typedef struct netdata_rwlock_locker { + pid_t pid; + const char *tag; + char lock; // 'R', 'W' + const char *file; + const char *function; + unsigned long line; + size_t callers; + usec_t start_s; + struct netdata_rwlock_t **all_caller_locks; + struct netdata_rwlock_locker *next; +} netdata_rwlock_locker; + +typedef struct netdata_rwlock_t { + pthread_rwlock_t rwlock_t; // the lock + size_t readers; // the number of reader on the lock + size_t writers; // the number of writers on the lock + netdata_mutex_t lockers_mutex; // a mutex to protect the linked list of the lock holding threads + netdata_rwlock_locker *lockers; // the linked list of the lock holding threads +} netdata_rwlock_t; + +#define NETDATA_RWLOCK_INITIALIZER { \ + .rwlock_t = PTHREAD_RWLOCK_INITIALIZER, \ + .readers = 0, \ + .writers = 0, \ + .lockers_mutex = NETDATA_MUTEX_INITIALIZER, \ + .lockers = NULL \ + } + +#else // NETDATA_TRACE_RWLOCKS + +typedef struct netdata_rwlock_t { + pthread_rwlock_t rwlock_t; +} netdata_rwlock_t; + +#define NETDATA_RWLOCK_INITIALIZER { \ + .rwlock_t = PTHREAD_RWLOCK_INITIALIZER \ + } + +#endif // NETDATA_TRACE_RWLOCKS extern int __netdata_mutex_init(netdata_mutex_t *mutex); +extern int __netdata_mutex_destroy(netdata_mutex_t *mutex); extern int __netdata_mutex_lock(netdata_mutex_t *mutex); extern int __netdata_mutex_trylock(netdata_mutex_t *mutex); extern int __netdata_mutex_unlock(netdata_mutex_t *mutex); @@ -24,7 +65,13 @@ extern int __netdata_rwlock_unlock(netdata_rwlock_t *rwlock); extern int __netdata_rwlock_tryrdlock(netdata_rwlock_t *rwlock); extern int __netdata_rwlock_trywrlock(netdata_rwlock_t *rwlock); +extern void netdata_thread_disable_cancelability(void); +extern void netdata_thread_enable_cancelability(void); + +#ifdef NETDATA_TRACE_RWLOCKS + extern int netdata_mutex_init_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex); +extern int netdata_mutex_destroy_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex); extern int netdata_mutex_lock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex); extern int netdata_mutex_trylock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex); extern int netdata_mutex_unlock_debug( const char *file, const char *function, const unsigned long line, netdata_mutex_t *mutex); @@ -37,12 +84,8 @@ extern int netdata_rwlock_unlock_debug( const char *file, const char *function, extern int netdata_rwlock_tryrdlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock); extern int netdata_rwlock_trywrlock_debug( const char *file, const char *function, const unsigned long line, netdata_rwlock_t *rwlock); -extern void netdata_thread_disable_cancelability(void); -extern void netdata_thread_enable_cancelability(void); - -#ifdef NETDATA_INTERNAL_CHECKS - #define netdata_mutex_init(mutex) netdata_mutex_init_debug(__FILE__, __FUNCTION__, __LINE__, mutex) +#define netdata_mutex_destroy(mutex) netdata_mutex_init_debug(__FILE__, __FUNCTION__, __LINE__, mutex) #define netdata_mutex_lock(mutex) netdata_mutex_lock_debug(__FILE__, __FUNCTION__, __LINE__, mutex) #define netdata_mutex_trylock(mutex) netdata_mutex_trylock_debug(__FILE__, __FUNCTION__, __LINE__, mutex) #define netdata_mutex_unlock(mutex) netdata_mutex_unlock_debug(__FILE__, __FUNCTION__, __LINE__, mutex) @@ -55,9 +98,10 @@ extern void netdata_thread_enable_cancelability(void); #define netdata_rwlock_tryrdlock(rwlock) netdata_rwlock_tryrdlock_debug(__FILE__, __FUNCTION__, __LINE__, rwlock) #define netdata_rwlock_trywrlock(rwlock) netdata_rwlock_trywrlock_debug(__FILE__, __FUNCTION__, __LINE__, rwlock) -#else // !NETDATA_INTERNAL_CHECKS +#else // !NETDATA_TRACE_RWLOCKS #define netdata_mutex_init(mutex) __netdata_mutex_init(mutex) +#define netdata_mutex_destroy(mutex) __netdata_mutex_destroy(mutex) #define netdata_mutex_lock(mutex) __netdata_mutex_lock(mutex) #define netdata_mutex_trylock(mutex) __netdata_mutex_trylock(mutex) #define netdata_mutex_unlock(mutex) __netdata_mutex_unlock(mutex) @@ -70,6 +114,6 @@ extern void netdata_thread_enable_cancelability(void); #define netdata_rwlock_tryrdlock(rwlock) __netdata_rwlock_tryrdlock(rwlock) #define netdata_rwlock_trywrlock(rwlock) __netdata_rwlock_trywrlock(rwlock) -#endif // NETDATA_INTERNAL_CHECKS +#endif // NETDATA_TRACE_RWLOCKS #endif //NETDATA_LOCKS_H |