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Changed log manager API so that pointer reference to logmanager is not used anymore. Every call initializes logmanager now except skygw_logmanager_done and skygw_log_flush.

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skygw_logmanager_init is still useful because it allows for providing memory address for log manager where it can store a list of preallocated write buffers. TBD.

Logmanager access is now protected with spinlock familiar from epoll/core/spinlock.c . It is modified to avoid trashing; misses are counted and every tenth subsequent lock acquiring attempt triggers short random sleep.
This commit is contained in:
vraatikka
2013-06-26 23:13:40 +03:00
parent 2ea8e2a05a
commit ef1d198654
7 changed files with 397 additions and 210 deletions
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5
utils/skygw_utils.h
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@ -122,6 +122,7 @@ void skygw_file_done(skygw_file_t* file);
bool skygw_file_write(skygw_file_t* file, void* data, size_t nbytes);
/** Skygw file routines */
EXTERN_C_BLOCK_BEGIN
simple_mutex_t* simple_mutex_init(simple_mutex_t* mutexptr, char* name);
int simple_mutex_done(simple_mutex_t* sm);
@ -147,9 +148,13 @@ void skygw_message_reset(
skygw_message_t* mes);
/** Skygw message routines */
EXTERN_C_BLOCK_END
int skygw_rwlock_wrlock(skygw_rwlock_t* rwlock);
int skygw_rwlock_rdlock(skygw_rwlock_t* rwlock);
int skygw_rwlock_unlock(skygw_rwlock_t* rwlock);
int skygw_rwlock_init(skygw_rwlock_t** rwlock);
int atomic_add(int *variable, int value);
#endif /* SKYGW_UTILS_H */