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Commitf7ecc0c

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committed
headers added
1 parent5f40cb2 commitf7ecc0c

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9 files changed

+148
-40
lines changed

9 files changed

+148
-40
lines changed

‎dsm_array.c‎

Lines changed: 13 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,14 @@
1+
/* ------------------------------------------------------------------------
2+
*
3+
* init.c
4+
*This module allocates large DSM segment to store arrays,
5+
*initializes it with block structure and provides functions to
6+
*allocate and free arrays
7+
*
8+
* Copyright (c) 2015-2016, Postgres Professional
9+
*
10+
* ------------------------------------------------------------------------
11+
*/
112
#include"pathman.h"
213
#include"storage/shmem.h"
314
#include"storage/dsm.h"
@@ -69,7 +80,7 @@ init_dsm_segment(size_t blocks_count, size_t block_size)
6980
boolret;
7081

7182
/* lock here */
72-
LWLockAcquire(dsm_init_lock,LW_EXCLUSIVE);
83+
LWLockAcquire(pmstate->dsm_init_lock,LW_EXCLUSIVE);
7384

7485
/* if there is already an existing segment then attach to it */
7586
if (dsm_cfg->segment_handle!=0)
@@ -99,9 +110,8 @@ init_dsm_segment(size_t blocks_count, size_t block_size)
99110
* destroyed by the end of transaction
100111
*/
101112
dsm_pin_mapping(segment);
102-
103113
/* unlock here */
104-
LWLockRelease(dsm_init_lock);
114+
LWLockRelease(pmstate->dsm_init_lock);
105115

106116
returnret;
107117
}

‎hash.sql‎

Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,13 @@
1+
/* ------------------------------------------------------------------------
2+
*
3+
* hash.sql
4+
* HASH partitioning functions
5+
*
6+
* Copyright (c) 2015-2016, Postgres Professional
7+
*
8+
* ------------------------------------------------------------------------
9+
*/
10+
111
/*
212
* Creates hash partitions for specified relation
313
*/

‎init.c‎

Lines changed: 41 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,12 @@
1+
/* ------------------------------------------------------------------------
2+
*
3+
* init.c
4+
*Initialization functions
5+
*
6+
* Copyright (c) 2015-2016, Postgres Professional
7+
*
8+
* ------------------------------------------------------------------------
9+
*/
110
#include"pathman.h"
211
#include"miscadmin.h"
312
#include"executor/spi.h"
@@ -28,6 +37,33 @@ static int cmp_range_entries(const void *p1, const void *p2);
2837
void
2938
init_shmem_config()
3039
{
40+
boolfound;
41+
42+
/* Check if module was initialized in postmaster */
43+
pmstate=ShmemInitStruct("pathman state",sizeof(PathmanState),&found);
44+
if (!found)
45+
{
46+
/*
47+
* Initialize locks in postmaster
48+
*/
49+
if (!IsUnderPostmaster)
50+
{
51+
/* Initialize locks */
52+
pmstate->load_config_lock=LWLockAssign();
53+
pmstate->dsm_init_lock=LWLockAssign();
54+
pmstate->edit_partitions_lock=LWLockAssign();
55+
}
56+
#ifdefWIN32
57+
else
58+
{
59+
elog(ERROR,"Pathman module must be initialized in postmaster. "
60+
"Put the following line to configuration file: "
61+
"shared_preload_libraries='pg_pathman'");
62+
initialization_needed= false;
63+
}
64+
#endif
65+
}
66+
3167
create_relations_hashtable();
3268
create_range_restrictions_hashtable();
3369
}
@@ -46,9 +82,9 @@ load_config(void)
4682
/* if config is not loaded */
4783
if (new_segment_created)
4884
{
49-
LWLockAcquire(load_config_lock,LW_EXCLUSIVE);
85+
LWLockAcquire(pmstate->load_config_lock,LW_EXCLUSIVE);
5086
load_relations_hashtable(new_segment_created);
51-
LWLockRelease(load_config_lock);
87+
LWLockRelease(pmstate->load_config_lock);
5288
}
5389
}
5490

@@ -195,8 +231,8 @@ create_relations_hashtable()
195231
void
196232
load_check_constraints(Oidparent_oid,Snapshotsnapshot)
197233
{
198-
PartRelationInfo*prel;
199-
RangeRelation*rangerel;
234+
PartRelationInfo*prel=NULL;
235+
RangeRelation*rangerel=NULL;
200236
SPIPlanPtrplan;
201237
boolfound;
202238
intret,
@@ -227,7 +263,7 @@ load_check_constraints(Oid parent_oid, Snapshot snapshot)
227263
{
228264
SPITupleTable*tuptable=SPI_tuptable;
229265
Oid*children;
230-
RangeEntry*ranges;
266+
RangeEntry*ranges=NULL;
231267
Datummin;
232268
Datummax;
233269
inthash;

‎init.sql‎

Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,13 @@
1+
/* ------------------------------------------------------------------------
2+
*
3+
* init.sql
4+
* Creates config table and provides common utility functions
5+
*
6+
* Copyright (c) 2015-2016, Postgres Professional
7+
*
8+
* ------------------------------------------------------------------------
9+
*/
10+
111
/*
212
* Pathman config
313
* relname - schema qualified relation name

‎pathman.h‎

Lines changed: 18 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,12 @@
1+
/* ------------------------------------------------------------------------
2+
*
3+
* pathman.h
4+
*structures and prototypes for pathman functions
5+
*
6+
* Copyright (c) 2015-2016, Postgres Professional
7+
*
8+
* ------------------------------------------------------------------------
9+
*/
110
#ifndefPATHMAN_H
211
#definePATHMAN_H
312

@@ -98,6 +107,15 @@ typedef struct RangeRelation
98107
DsmArrayranges;
99108
}RangeRelation;
100109

110+
typedefstructPathmanState
111+
{
112+
LWLock*load_config_lock;
113+
LWLock*dsm_init_lock;
114+
LWLock*edit_partitions_lock;
115+
}PathmanState;
116+
117+
PathmanState*pmstate;
118+
101119
#definePATHMAN_GET_DATUM(value,by_val) ( (by_val) ? (value) : PointerGetDatum(&value) )
102120

103121
typedefintIndexRange;
@@ -132,12 +150,6 @@ List *irange_list_intersect(List *a, List *b);
132150
intirange_list_length(List*rangeset);
133151
boolirange_list_find(List*rangeset,intindex,bool*lossy);
134152

135-
136-
LWLock*load_config_lock;
137-
LWLock*dsm_init_lock;
138-
LWLock*edit_partitions_lock;
139-
140-
141153
/* Dynamic shared memory functions */
142154
voidinit_dsm_config(void);
143155
boolinit_dsm_segment(size_tblocks_count,size_tblock_size);

‎pg_pathman.c‎

Lines changed: 14 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,13 @@
1+
/* ------------------------------------------------------------------------
2+
*
3+
* pg_pathman.c
4+
*This module sets planner hooks, handles SELECT queries and produces
5+
*paths for partitioned tables
6+
*
7+
* Copyright (c) 2015-2016, Postgres Professional
8+
*
9+
* ------------------------------------------------------------------------
10+
*/
111
#include"pathman.h"
212
#include"postgres.h"
313
#include"fmgr.h"
@@ -103,13 +113,15 @@ static void set_pathkeys(PlannerInfo *root, RelOptInfo *childrel, Path *path);
103113
void
104114
_PG_init(void)
105115
{
116+
#ifndefWIN32
106117
if (IsUnderPostmaster)
107118
{
108119
elog(ERROR,"Pathman module must be initialized in postmaster. "
109120
"Put the following line to configuration file: "
110121
"shared_preload_libraries='pg_pathman'");
111-
initialization_needed= false;
122+
initialization_needed= false;
112123
}
124+
#endif
113125

114126
set_rel_pathlist_hook_original=set_rel_pathlist_hook;
115127
set_rel_pathlist_hook=pathman_set_rel_pathlist_hook;
@@ -246,16 +258,11 @@ pathman_shmem_startup(void)
246258
{
247259
/* Initialize locks */
248260
RequestAddinLWLocks(3);
249-
load_config_lock=LWLockAssign();
250-
dsm_init_lock=LWLockAssign();
251-
edit_partitions_lock=LWLockAssign();
252-
253-
LWLockAcquire(AddinShmemInitLock,LW_EXCLUSIVE);
254261

255262
/* Allocate shared memory objects */
263+
LWLockAcquire(AddinShmemInitLock,LW_EXCLUSIVE);
256264
init_dsm_config();
257265
init_shmem_config();
258-
259266
LWLockRelease(AddinShmemInitLock);
260267

261268
/* Invoke original hook if needed */

‎pl_funcs.c‎

Lines changed: 23 additions & 18 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,12 @@
1+
/* ------------------------------------------------------------------------
2+
*
3+
* pl_funcs.c
4+
*Utility C functions for stored procedures
5+
*
6+
* Copyright (c) 2015-2016, Postgres Professional
7+
*
8+
* ------------------------------------------------------------------------
9+
*/
110
#include"pathman.h"
211
#include"utils/lsyscache.h"
312
#include"utils/typcache.h"
@@ -29,13 +38,13 @@ PG_FUNCTION_INFO_V1( get_max_range_value );
2938
Datum
3039
on_partitions_created(PG_FUNCTION_ARGS)
3140
{
32-
LWLockAcquire(load_config_lock,LW_EXCLUSIVE);
41+
LWLockAcquire(pmstate->load_config_lock,LW_EXCLUSIVE);
3342

3443
/* Reload config */
3544
/* TODO: reload just the specified relation */
3645
load_relations_hashtable(false);
3746

38-
LWLockRelease(load_config_lock);
47+
LWLockRelease(pmstate->load_config_lock);
3948

4049
PG_RETURN_NULL();
4150
}
@@ -51,10 +60,10 @@ on_partitions_updated(PG_FUNCTION_ARGS)
5160
prel=get_pathman_relation_info(relid,NULL);
5261
if (prel!=NULL)
5362
{
54-
LWLockAcquire(load_config_lock,LW_EXCLUSIVE);
63+
LWLockAcquire(pmstate->load_config_lock,LW_EXCLUSIVE);
5564
remove_relation_info(relid);
5665
load_relations_hashtable(false);
57-
LWLockRelease(load_config_lock);
66+
LWLockRelease(pmstate->load_config_lock);
5867
}
5968

6069
PG_RETURN_NULL();
@@ -65,13 +74,13 @@ on_partitions_removed(PG_FUNCTION_ARGS)
6574
{
6675
Oidrelid;
6776

68-
LWLockAcquire(load_config_lock,LW_EXCLUSIVE);
77+
LWLockAcquire(pmstate->load_config_lock,LW_EXCLUSIVE);
6978

7079
/* parent relation oid */
7180
relid=DatumGetInt32(PG_GETARG_DATUM(0));
7281
remove_relation_info(relid);
7382

74-
LWLockRelease(load_config_lock);
83+
LWLockRelease(pmstate->load_config_lock);
7584

7685
PG_RETURN_NULL();
7786
}
@@ -129,10 +138,10 @@ find_or_create_range_partition(PG_FUNCTION_ARGS)
129138
Oidchild_oid;
130139

131140
/* Lock config before appending new partitions */
132-
LWLockAcquire(load_config_lock,LW_EXCLUSIVE);
141+
LWLockAcquire(pmstate->load_config_lock,LW_EXCLUSIVE);
133142

134143
/* Restrict concurrent partition creation */
135-
LWLockAcquire(edit_partitions_lock,LW_EXCLUSIVE);
144+
LWLockAcquire(pmstate->edit_partitions_lock,LW_EXCLUSIVE);
136145

137146
/*
138147
* Check if someone else has already created partition.
@@ -141,8 +150,8 @@ find_or_create_range_partition(PG_FUNCTION_ARGS)
141150
pos=range_binary_search(rangerel,&cmp_func,value,&found);
142151
if (found)
143152
{
144-
LWLockRelease(edit_partitions_lock);
145-
LWLockRelease(load_config_lock);
153+
LWLockRelease(pmstate->edit_partitions_lock);
154+
LWLockRelease(pmstate->load_config_lock);
146155
PG_RETURN_OID(ranges[pos].child_oid);
147156
}
148157

@@ -155,8 +164,8 @@ find_or_create_range_partition(PG_FUNCTION_ARGS)
155164
// elog(WARNING, "Worker finished");
156165

157166
/* Release locks */
158-
LWLockRelease(edit_partitions_lock);
159-
LWLockRelease(load_config_lock);
167+
LWLockRelease(pmstate->edit_partitions_lock);
168+
LWLockRelease(pmstate->load_config_lock);
160169

161170
/* Repeat binary search */
162171
ranges=dsm_array_get_pointer(&rangerel->ranges);
@@ -361,17 +370,13 @@ check_overlap(PG_FUNCTION_ARGS)
361370
Datum
362371
acquire_partitions_lock(PG_FUNCTION_ARGS)
363372
{
364-
// int relid = DatumGetInt32(PG_GETARG_DATUM(0));
365-
// LockRelationOid(relid, AccessExclusiveLock);
366-
LWLockAcquire(edit_partitions_lock,LW_EXCLUSIVE);
373+
LWLockAcquire(pmstate->edit_partitions_lock,LW_EXCLUSIVE);
367374
PG_RETURN_NULL();
368375
}
369376

370377
Datum
371378
release_partitions_lock(PG_FUNCTION_ARGS)
372379
{
373-
// int relid = DatumGetInt32(PG_GETARG_DATUM(0));
374-
// UnlockRelationOid(relid, AccessExclusiveLock);
375-
LWLockRelease(edit_partitions_lock);
380+
LWLockRelease(pmstate->edit_partitions_lock);
376381
PG_RETURN_NULL();
377382
}

‎range.sql‎

Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,13 @@
1+
/* ------------------------------------------------------------------------
2+
*
3+
* range.sql
4+
* RANGE partitioning functions
5+
*
6+
* Copyright (c) 2015-2016, Postgres Professional
7+
*
8+
* ------------------------------------------------------------------------
9+
*/
10+
111
/*
212
* Creates RANGE partitions for specified relation based on datetime attribute
313
*/

‎rangeset.c‎

Lines changed: 9 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,12 @@
1+
/* ------------------------------------------------------------------------
2+
*
3+
* rangeset.c
4+
*Index range functions
5+
*
6+
* Copyright (c) 2015-2016, Postgres Professional
7+
*
8+
* ------------------------------------------------------------------------
9+
*/
110
#include"pathman.h"
211

312
/* Check if two ranges are intersecting */
@@ -213,7 +222,6 @@ irange_list_intersect(List *a, List *b)
213222
if (irange_upper(ra) >=irange_upper(rb))
214223
cb=lnext(cb);
215224
}
216-
217225
returnresult;
218226
}
219227

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