external/pg_stat_monitor
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Issue (#30) - Code refactoring.

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This commit is contained in:
Ibrar Ahmed
2020-04-15 09:49:02 +00:00
parent c9de79b6ba
commit beca034067
7 changed files with 777 additions and 309 deletions
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59
pg_stat_monitor.h
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@@ -35,6 +35,11 @@
#include "utils/timestamp.h"
#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 */
#define TIMEVAL_DIFF(start, end) (((double) end.tv_sec + (double) end.tv_usec / 1000000.0) \
- ((double) start.tv_sec + (double) start.tv_usec / 1000000.0)) * 1000
@@ -237,12 +242,26 @@ typedef struct pgssSharedState
Size extent; /* current extent of query file */
int n_writers; /* number of active writers to query file */
uint64 current_wbucket;
unsigned long prev_bucket_usec;
unsigned long bucket_overflow[MAX_BUCKETS];
unsigned long bucket_entry[MAX_BUCKETS];
uint64 prev_bucket_usec;
uint64 bucket_overflow[MAX_BUCKETS];
uint64 bucket_entry[MAX_BUCKETS];
QueryFifo query_fifo[MAX_BUCKETS];
} pgssSharedState;
#define ResetSharedState(x) \
do { \
x->cur_median_usage = ASSUMED_MEDIAN_INIT; \
x->cur_median_usage = ASSUMED_MEDIAN_INIT; \
x->n_writers = 0; \
x->current_wbucket = 0; \
x->prev_bucket_usec = 0; \
memset(&x->bucket_overflow, 0, MAX_BUCKETS * sizeof(uint64)); \
memset(&x->bucket_entry, 0, MAX_BUCKETS * sizeof(uint64)); \
memset(&x->query_fifo, 0, MAX_BUCKETS * sizeof(uint64)); \
} while(0)
unsigned char *pgss_qbuf[MAX_BUCKETS];
/*
@@ -279,25 +298,39 @@ typedef struct pgssJumbleState
int highest_extern_param_id;
} pgssJumbleState;
/*---- GUC variables ----*/
typedef enum
{
PGSS_TRACK_NONE, /* track no statements */
PGSS_TRACK_TOP, /* only top level statements */
PGSS_TRACK_ALL /* all statements, including nested ones */
pgsm_track_NONE, /* track no statements */
pgsm_track_TOP, /* only top level statements */
pgsm_track_ALL /* all statements, including nested ones */
} PGSSTrackLevel;
static const struct config_enum_entry track_options[] =
{
{"none", PGSS_TRACK_NONE, false},
{"top", PGSS_TRACK_TOP, false},
{"all", PGSS_TRACK_ALL, false},
{"none", pgsm_track_NONE, false},
{"top", pgsm_track_TOP, false},
{"all", pgsm_track_ALL, false},
{NULL, 0, false}
};
#define pgss_enabled() \
(pgss_track == PGSS_TRACK_ALL || \
(pgss_track == PGSS_TRACK_TOP && nested_level == 0))
(pgsm_track == pgsm_track_ALL || \
(pgsm_track == pgsm_track_TOP && nested_level == 0))
#endif
/* guc.c */
void init_guc(void);
/*---- GUC variables ----*/
int pgsm_max; /* max # statements to track */
int pgsm_track; /* tracking level */
bool pgsm_track_utility; /* whether to track utility commands */
int pgsm_bucket_time; /* bucket maximum time */
int pgsm_max_buckets; /* total number of buckets */
int pgsm_object_cache; /* total number of objects cache */
bool pgsm_normalized_query; /* save normaized query or not */
int pgsm_query_max_len; /* max query length */
int pgsm_query_buf_size; /* maximum size of the query */
double pgsm_respose_time_lower_bound;
double pgsm_respose_time_step;