external/pg_stat_monitor
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Issue(30): Code refactoring.

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This commit is contained in:
Ibrar Ahmed
2020-09-14 22:26:19 +00:00
parent 7613b1cb1c
commit 935d063f13
6 changed files with 554 additions and 713 deletions
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69
pg_stat_monitor.h
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@@ -36,8 +36,6 @@
#include "utils/lsyscache.h"
#include "utils/guc.h"
#define IsHashInitialize() (pgss || pgss_hash || pgss_object_hash || pgss_agghash || pgss_buckethash || pgss_waiteventshash)
#define MAX_BACKEND_PROCESES (MaxBackends + NUM_AUXILIARY_PROCS + max_prepared_xacts)
/* Time difference in miliseconds */
@@ -131,42 +129,21 @@ typedef struct pgssObjectEntry
slock_t mutex; /* protects the counters only */
} pgssObjectEntry;
/* Aggregate shared memory storage */
typedef struct pgssAggHashKey
{
uint64 id; /* dbid, userid or ip depend upon the type */
uint64 type; /* type of id dbid, userid or ip */
uint64 queryid; /* query identifier, foreign key to the query */
uint64 bucket_id; /* bucket_id is the foreign key to pgssBucketHashKey */
} pgssAggHashKey;
typedef struct pgssAggCounters
{
uint64 total_calls; /* number of quries per database/user/ip */
} pgssAggCounters;
typedef struct pgssAggEntry
{
pgssAggHashKey key; /* hash key of entry - MUST BE FIRST */
pgssAggCounters counters; /* the statistics aggregates */
slock_t mutex; /* protects the counters only */
} pgssAggEntry;
typedef struct pgssWaitEventKey
{
uint64 queryid;
uint64 processid;
} pgssWaitEventKey;
#define MAX_QUERY_LEN 1024
typedef struct pgssWaitEventEntry
{
pgssAggHashKey key; /* hash key of entry - MUST BE FIRST */
uint64 queryid;
uint64 pid;
uint32 wait_event_info;
char query[MAX_QUERY_LEN];
slock_t mutex; /* protects the counters only */
pgssWaitEventKey key; /* hash key of entry - MUST BE FIRST */
uint64 queryid;
uint64 pid;
uint32 wait_event_info;
char query[MAX_QUERY_LEN];
slock_t mutex; /* protects the counters only */
} pgssWaitEventEntry;
@@ -177,6 +154,7 @@ typedef struct pgssHashKey
uint64 queryid; /* query identifier */
Oid userid; /* user OID */
Oid dbid; /* database OID */
uint32 ip; /* client ip address */
} pgssHashKey;
typedef struct QueryInfo
@@ -273,6 +251,7 @@ typedef struct pgssSharedState
uint64 bucket_overflow[MAX_BUCKETS];
uint64 bucket_entry[MAX_BUCKETS];
QueryFifo query_fifo[MAX_BUCKETS];
int query_buf_size_bucket;
} pgssSharedState;
#define ResetSharedState(x) \
@@ -325,9 +304,31 @@ typedef struct pgssJumbleState
int highest_extern_param_id;
} pgssJumbleState;
/* Links to shared memory state */
/* guc.c */
void init_guc(void);
/* hash_create.c */
void add_object_entry(uint64 queryid, char *objects);
void remove_object_entry(uint64 queryid, char *objects);
bool IsHashInitialize(void);
void pgss_shmem_startup(void);
void pgss_shmem_shutdown(int code, Datum arg);
shmem_startup_hook_type prev_shmem_startup_hook;
int pgsm_get_bucket_size(void);
pgssSharedState* pgsm_get_ss(void);
pgssBucketEntry** pgsm_get_bucket_entries(void);
HTAB* pgsm_get_wait_event_hash(void);
pgssBucketEntry** pgsm_get_bucket(void);
HTAB* pgsm_get_hash(void);
pgssWaitEventEntry** pgsm_get_wait_event_entry(void);
void hash_entry_reset(void);
void hash_entry_dealloc(int bucket);
pgssEntry* hash_entry_alloc(pgssSharedState *pgss, pgssHashKey *key, int encoding);
Size hash_memsize(void);
pgssEntry* pgsm_create_query_entry(unsigned int queryid, unsigned int userid, unsigned int dbid, unsigned int bucket_id, unsigned int ip);
/*---- GUC variables ----*/
#define PGSM_MAX conf[0].guc_variable
#define PGSM_QUERY_MAX_LEN conf[1].guc_variable
@@ -336,10 +337,10 @@ void init_guc(void);
#define PGSM_NORMALIZED_QUERY conf[4].guc_variable
#define PGSM_MAX_BUCKETS conf[5].guc_variable
#define PGSM_BUCKET_TIME conf[6].guc_variable
#define PGSM_QUERY_BUF_SIZE conf[7].guc_variable
#define PGSM_OBJECT_CACHE conf[8].guc_variable
#define PGSM_RESPOSE_TIME_LOWER_BOUND conf[9].guc_variable
#define PGSM_RESPOSE_TIME_STEP conf[10].guc_variable
#define PGSM_OBJECT_CACHE conf[7].guc_variable
#define PGSM_RESPOSE_TIME_LOWER_BOUND conf[8].guc_variable
#define PGSM_RESPOSE_TIME_STEP conf[9].guc_variable
#define PGSM_QUERY_BUF_SIZE conf[10].guc_variable
#define PGSM_TRACK_PLANNING conf[11].guc_variable
GucVariable conf[12];