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Implement non-blocking alternative to mutexes for read serialisation

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This commit is contained in:
Mark Riddoch
2014-06-10 17:59:49 +01:00
parent f7a177dac8
commit 2963a8448b
7 changed files with 230 additions and 51 deletions
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24
server/modules/include/blr.h
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@ -59,10 +59,10 @@
* Slave statistics
*/
typedef struct {
unsigned int n_events; /*< Number of events sent */
unsigned int n_bursts; /*< Number of bursts sent */
unsigned int n_requests; /*< Number of requests received */
unsigned int n_flows; /*< Number of flow control restarts */
int n_events; /*< Number of events sent */
int n_bursts; /*< Number of bursts sent */
int n_requests; /*< Number of requests received */
int n_flows; /*< Number of flow control restarts */
} SLAVE_STATS;
/**
@ -102,18 +102,19 @@ typedef struct router_slave {
* The statistics for this router instance
*/
typedef struct {
unsigned int n_slaves; /*< Number slave sessions created */
unsigned int n_reads; /*< Number of record reads */
int n_slaves; /*< Number slave sessions created */
int n_reads; /*< Number of record reads */
uint64_t n_binlogs; /*< Number of binlog records from master */
uint64_t n_binlog_errors;/*< Number of binlog records from master */
uint64_t n_rotates; /*< Number of binlog rotate events */
uint64_t n_cachehits; /*< Number of hits on the binlog cache */
uint64_t n_cachemisses; /*< Number of misses on the binlog cache */
unsigned int n_registered; /*< Number of registered slaves */
int n_registered; /*< Number of registered slaves */
int n_masterstarts; /*< Numebr of times connection restarted */
int n_delayedreconnects;
int n_queueadd; /*< Numebr of times incoming data was added to processign queue */
int n_residuals; /*< Number of times residual data was buffered */
unsigned int n_heartbeats; /*< Number of heartbeat messages */
int n_heartbeats; /*< Number of heartbeat messages */
time_t lastReply;
uint64_t n_fakeevents; /*< Fake events not written to disk */
uint64_t n_artificial; /*< Artificial events not written to disk */
@ -199,6 +200,7 @@ typedef struct router_instance {
BLCACHE *cache[2];
ROUTER_STATS stats; /*< Statistics for this router */
int active_logs;
int reconnect_pending;
GWBUF *queue;
struct router_instance
*next;
@ -326,13 +328,17 @@ static char *blrs_states[] = { "Created", "Unregistered", "Registered",
*/
extern void blr_start_master(ROUTER_INSTANCE *);
extern void blr_master_response(ROUTER_INSTANCE *, GWBUF *);
extern void blr_master_reconnect(ROUTER_INSTANCE *);
extern int blr_slave_request(ROUTER_INSTANCE *, ROUTER_SLAVE *, GWBUF *);
extern void blr_slave_rotate(ROUTER_SLAVE *slave, uint8_t *ptr);
extern int blr_slave_catchup(ROUTER_INSTANCE *router, ROUTER_SLAVE *slave);
extern void blr_init_cache(ROUTER_INSTANCE *);
extern void blr_file_init(ROUTER_INSTANCE *);
extern int blr_open_binlog(ROUTER_INSTANCE *, char *);
extern void blr_write_binlog_record(ROUTER_INSTANCE *, REP_HEADER *,uint8_t *);
extern void blr_file_rotate(ROUTER_INSTANCE *, char *, uint64_t);
extern void blr_file_flush(ROUTER_INSTANCE *);
extern GWBUF *blr_read_binlog(int, unsigned int, REP_HEADER *);
#endif