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Commit69f9410

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Allow definition of lock mode for custom reloptions
Relation options can define a lock mode other than AccessExclusiveModesince47167b7, but modules defining custom relation options did notreally have a way to enforce that. Correct that by extending thecurrent API set so as modules can define a custom lock mode.Author: Michael PaquierReviewed-by: Kuntal GhoshDiscussion:https://postgr.es/m/20190920013831.GD1844@paquier.xyz
1 parent736b84e commit69f9410

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3 files changed

+23
-22
lines changed

3 files changed

+23
-22
lines changed

‎contrib/bloom/blutils.c

Lines changed: 4 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -60,7 +60,8 @@ _PG_init(void)
6060
/* Option for length of signature */
6161
add_int_reloption(bl_relopt_kind,"length",
6262
"Length of signature in bits",
63-
DEFAULT_BLOOM_LENGTH,1,MAX_BLOOM_LENGTH);
63+
DEFAULT_BLOOM_LENGTH,1,MAX_BLOOM_LENGTH,
64+
AccessExclusiveLock);
6465
bl_relopt_tab[0].optname="length";
6566
bl_relopt_tab[0].opttype=RELOPT_TYPE_INT;
6667
bl_relopt_tab[0].offset= offsetof(BloomOptions,bloomLength);
@@ -71,7 +72,8 @@ _PG_init(void)
7172
snprintf(buf,sizeof(buf),"col%d",i+1);
7273
add_int_reloption(bl_relopt_kind,buf,
7374
"Number of bits generated for each index column",
74-
DEFAULT_BLOOM_BITS,1,MAX_BLOOM_BITS);
75+
DEFAULT_BLOOM_BITS,1,MAX_BLOOM_BITS,
76+
AccessExclusiveLock);
7577
bl_relopt_tab[i+1].optname=MemoryContextStrdup(TopMemoryContext,
7678
buf);
7779
bl_relopt_tab[i+1].opttype=RELOPT_TYPE_INT;

‎src/backend/access/common/reloptions.c

Lines changed: 12 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -621,7 +621,8 @@ add_reloption(relopt_gen *newoption)
621621
*(for types other than string)
622622
*/
623623
staticrelopt_gen*
624-
allocate_reloption(bits32kinds,inttype,constchar*name,constchar*desc)
624+
allocate_reloption(bits32kinds,inttype,constchar*name,constchar*desc,
625+
LOCKMODElockmode)
625626
{
626627
MemoryContextoldcxt;
627628
size_tsize;
@@ -658,13 +659,7 @@ allocate_reloption(bits32 kinds, int type, const char *name, const char *desc)
658659
newoption->kinds=kinds;
659660
newoption->namelen=strlen(name);
660661
newoption->type=type;
661-
662-
/*
663-
* Set the default lock mode for this option. There is no actual way
664-
* for a module to enforce it when declaring a custom relation option,
665-
* so just use the highest level, which is safe for all cases.
666-
*/
667-
newoption->lockmode=AccessExclusiveLock;
662+
newoption->lockmode=lockmode;
668663

669664
MemoryContextSwitchTo(oldcxt);
670665

@@ -676,12 +671,13 @@ allocate_reloption(bits32 kinds, int type, const char *name, const char *desc)
676671
*Add a new boolean reloption
677672
*/
678673
void
679-
add_bool_reloption(bits32kinds,constchar*name,constchar*desc,booldefault_val)
674+
add_bool_reloption(bits32kinds,constchar*name,constchar*desc,
675+
booldefault_val,LOCKMODElockmode)
680676
{
681677
relopt_bool*newoption;
682678

683679
newoption= (relopt_bool*)allocate_reloption(kinds,RELOPT_TYPE_BOOL,
684-
name,desc);
680+
name,desc,lockmode);
685681
newoption->default_val=default_val;
686682

687683
add_reloption((relopt_gen*)newoption);
@@ -693,12 +689,12 @@ add_bool_reloption(bits32 kinds, const char *name, const char *desc, bool defaul
693689
*/
694690
void
695691
add_int_reloption(bits32kinds,constchar*name,constchar*desc,intdefault_val,
696-
intmin_val,intmax_val)
692+
intmin_val,intmax_val,LOCKMODElockmode)
697693
{
698694
relopt_int*newoption;
699695

700696
newoption= (relopt_int*)allocate_reloption(kinds,RELOPT_TYPE_INT,
701-
name,desc);
697+
name,desc,lockmode);
702698
newoption->default_val=default_val;
703699
newoption->min=min_val;
704700
newoption->max=max_val;
@@ -712,12 +708,12 @@ add_int_reloption(bits32 kinds, const char *name, const char *desc, int default_
712708
*/
713709
void
714710
add_real_reloption(bits32kinds,constchar*name,constchar*desc,doubledefault_val,
715-
doublemin_val,doublemax_val)
711+
doublemin_val,doublemax_val,LOCKMODElockmode)
716712
{
717713
relopt_real*newoption;
718714

719715
newoption= (relopt_real*)allocate_reloption(kinds,RELOPT_TYPE_REAL,
720-
name,desc);
716+
name,desc,lockmode);
721717
newoption->default_val=default_val;
722718
newoption->min=min_val;
723719
newoption->max=max_val;
@@ -736,7 +732,7 @@ add_real_reloption(bits32 kinds, const char *name, const char *desc, double defa
736732
*/
737733
void
738734
add_string_reloption(bits32kinds,constchar*name,constchar*desc,constchar*default_val,
739-
validate_string_reloptvalidator)
735+
validate_string_reloptvalidator,LOCKMODElockmode)
740736
{
741737
relopt_string*newoption;
742738

@@ -745,7 +741,7 @@ add_string_reloption(bits32 kinds, const char *name, const char *desc, const cha
745741
(validator) (default_val);
746742

747743
newoption= (relopt_string*)allocate_reloption(kinds,RELOPT_TYPE_STRING,
748-
name,desc);
744+
name,desc,lockmode);
749745
newoption->validate_cb=validator;
750746
if (default_val)
751747
{

‎src/include/access/reloptions.h

Lines changed: 7 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -247,13 +247,16 @@ typedef struct
247247

248248
externrelopt_kindadd_reloption_kind(void);
249249
externvoidadd_bool_reloption(bits32kinds,constchar*name,constchar*desc,
250-
booldefault_val);
250+
booldefault_val,LOCKMODElockmode);
251251
externvoidadd_int_reloption(bits32kinds,constchar*name,constchar*desc,
252-
intdefault_val,intmin_val,intmax_val);
252+
intdefault_val,intmin_val,intmax_val,
253+
LOCKMODElockmode);
253254
externvoidadd_real_reloption(bits32kinds,constchar*name,constchar*desc,
254-
doubledefault_val,doublemin_val,doublemax_val);
255+
doubledefault_val,doublemin_val,doublemax_val,
256+
LOCKMODElockmode);
255257
externvoidadd_string_reloption(bits32kinds,constchar*name,constchar*desc,
256-
constchar*default_val,validate_string_reloptvalidator);
258+
constchar*default_val,validate_string_reloptvalidator,
259+
LOCKMODElockmode);
257260

258261
externDatumtransformRelOptions(DatumoldOptions,List*defList,
259262
constchar*namspace,char*validnsps[],

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