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Commit55ef7ab

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Rename global variable backing DSA area
The global variable backing the DSA area for Memory Context statsreporting had a too generic name, rename to be more descriptive.Independently reported by Peter and Laurenz.Author: Daniel Gustafsson <daniel@yesql.se>Reported-by: Peter Eisentraut <peter@eisentraut.org>Reported-by: Laurenz Albe <laurenz.albe@cybertec.at>Discussion:https://postgr.es/m/d51172bd4e7f4b07a18a0288ca1b1c28a71a5f6a.camel@cybertec.atDiscussion:https://postgr.es/m/25095db5-b595-4b85-9100-d358907c25b5@eisentraut.org
1 parent22cb6d2 commit55ef7ab

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3 files changed

+28
-28
lines changed

3 files changed

+28
-28
lines changed

‎src/backend/utils/adt/mcxtfuncs.c‎

Lines changed: 7 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -533,21 +533,21 @@ pg_get_process_memory_contexts(PG_FUNCTION_ARGS)
533533
*/
534534
Assert(memCxtArea->memstats_dsa_handle!=DSA_HANDLE_INVALID);
535535
/* Attach to the dsa area if we have not already done so */
536-
if (area==NULL)
536+
if (MemoryStatsDsaArea==NULL)
537537
{
538538
MemoryContextoldcontext=CurrentMemoryContext;
539539

540540
MemoryContextSwitchTo(TopMemoryContext);
541-
area=dsa_attach(memCxtArea->memstats_dsa_handle);
541+
MemoryStatsDsaArea=dsa_attach(memCxtArea->memstats_dsa_handle);
542542
MemoryContextSwitchTo(oldcontext);
543-
dsa_pin_mapping(area);
543+
dsa_pin_mapping(MemoryStatsDsaArea);
544544
}
545545

546546
/*
547547
* Backend has finished publishing the stats, project them.
548548
*/
549549
memcxt_info= (MemoryStatsEntry*)
550-
dsa_get_address(area,memCxtState[procNumber].memstats_dsa_pointer);
550+
dsa_get_address(MemoryStatsDsaArea,memCxtState[procNumber].memstats_dsa_pointer);
551551

552552
#definePG_GET_PROCESS_MEMORY_CONTEXTS_COLS12
553553
for (inti=0;i<memCxtState[procNumber].total_stats;i++)
@@ -566,15 +566,15 @@ pg_get_process_memory_contexts(PG_FUNCTION_ARGS)
566566

567567
if (DsaPointerIsValid(memcxt_info[i].name))
568568
{
569-
name= (char*)dsa_get_address(area,memcxt_info[i].name);
569+
name= (char*)dsa_get_address(MemoryStatsDsaArea,memcxt_info[i].name);
570570
values[0]=CStringGetTextDatum(name);
571571
}
572572
else
573573
nulls[0]= true;
574574

575575
if (DsaPointerIsValid(memcxt_info[i].ident))
576576
{
577-
ident= (char*)dsa_get_address(area,memcxt_info[i].ident);
577+
ident= (char*)dsa_get_address(MemoryStatsDsaArea,memcxt_info[i].ident);
578578
values[1]=CStringGetTextDatum(ident);
579579
}
580580
else
@@ -586,7 +586,7 @@ pg_get_process_memory_contexts(PG_FUNCTION_ARGS)
586586
path_datum= (Datum*)palloc(path_length*sizeof(Datum));
587587
if (DsaPointerIsValid(memcxt_info[i].path))
588588
{
589-
path_int= (int*)dsa_get_address(area,memcxt_info[i].path);
589+
path_int= (int*)dsa_get_address(MemoryStatsDsaArea,memcxt_info[i].path);
590590
for (intj=0;j<path_length;j++)
591591
path_datum[j]=Int32GetDatum(path_int[j]);
592592
path_array=construct_array_builtin(path_datum,path_length,INT4OID);

‎src/backend/utils/mmgr/mcxt.c‎

Lines changed: 20 additions & 20 deletions
Original file line numberDiff line numberDiff line change
@@ -172,7 +172,7 @@ MemoryContext CurTransactionContext = NULL;
172172

173173
/* This is a transient link to the active portal's memory context: */
174174
MemoryContextPortalContext=NULL;
175-
dsa_area*area=NULL;
175+
dsa_area*MemoryStatsDsaArea=NULL;
176176

177177
staticvoidMemoryContextDeleteOnly(MemoryContextcontext);
178178
staticvoidMemoryContextCallResetCallbacks(MemoryContextcontext);
@@ -1499,19 +1499,19 @@ ProcessGetMemoryContextInterrupt(void)
14991499

15001500
MemoryContextSwitchTo(TopMemoryContext);
15011501

1502-
area=dsa_create(memCxtArea->lw_lock.tranche);
1502+
MemoryStatsDsaArea=dsa_create(memCxtArea->lw_lock.tranche);
15031503

1504-
handle=dsa_get_handle(area);
1504+
handle=dsa_get_handle(MemoryStatsDsaArea);
15051505
MemoryContextSwitchTo(oldcontext);
15061506

1507-
dsa_pin_mapping(area);
1507+
dsa_pin_mapping(MemoryStatsDsaArea);
15081508

15091509
/*
15101510
* Pin the DSA area, this is to make sure the area remains attachable
15111511
* even if current backend exits. This is done so that the statistics
15121512
* are published even if the process exits while a client is waiting.
15131513
*/
1514-
dsa_pin(area);
1514+
dsa_pin(MemoryStatsDsaArea);
15151515

15161516
/* Set the handle in shared memory */
15171517
memCxtArea->memstats_dsa_handle=handle;
@@ -1521,14 +1521,14 @@ ProcessGetMemoryContextInterrupt(void)
15211521
* If DSA exists, created by another process publishing statistics, attach
15221522
* to it.
15231523
*/
1524-
elseif (area==NULL)
1524+
elseif (MemoryStatsDsaArea==NULL)
15251525
{
15261526
MemoryContextoldcontext=CurrentMemoryContext;
15271527

15281528
MemoryContextSwitchTo(TopMemoryContext);
1529-
area=dsa_attach(memCxtArea->memstats_dsa_handle);
1529+
MemoryStatsDsaArea=dsa_attach(memCxtArea->memstats_dsa_handle);
15301530
MemoryContextSwitchTo(oldcontext);
1531-
dsa_pin_mapping(area);
1531+
dsa_pin_mapping(MemoryStatsDsaArea);
15321532
}
15331533
LWLockRelease(&memCxtArea->lw_lock);
15341534

@@ -1545,7 +1545,7 @@ ProcessGetMemoryContextInterrupt(void)
15451545
* Free any previous allocations, free the name, ident and path
15461546
* pointers before freeing the pointer that contains them.
15471547
*/
1548-
free_memorycontextstate_dsa(area,memCxtState[idx].total_stats,
1548+
free_memorycontextstate_dsa(MemoryStatsDsaArea,memCxtState[idx].total_stats,
15491549
memCxtState[idx].memstats_dsa_pointer);
15501550
}
15511551

@@ -1556,10 +1556,10 @@ ProcessGetMemoryContextInterrupt(void)
15561556
*/
15571557
memCxtState[idx].total_stats=stats_num;
15581558
memCxtState[idx].memstats_dsa_pointer=
1559-
dsa_allocate0(area,stats_num*sizeof(MemoryStatsEntry));
1559+
dsa_allocate0(MemoryStatsDsaArea,stats_num*sizeof(MemoryStatsEntry));
15601560

15611561
meminfo= (MemoryStatsEntry*)
1562-
dsa_get_address(area,memCxtState[idx].memstats_dsa_pointer);
1562+
dsa_get_address(MemoryStatsDsaArea,memCxtState[idx].memstats_dsa_pointer);
15631563

15641564
if (summary)
15651565
{
@@ -1572,7 +1572,7 @@ ProcessGetMemoryContextInterrupt(void)
15721572
&stat, true);
15731573
path=lcons_int(1,path);
15741574
PublishMemoryContext(meminfo,cxt_id,TopMemoryContext,path,stat,
1575-
1,area,100);
1575+
1,MemoryStatsDsaArea,100);
15761576
cxt_id=cxt_id+1;
15771577

15781578
/*
@@ -1602,7 +1602,7 @@ ProcessGetMemoryContextInterrupt(void)
16021602
*/
16031603
memCxtState[idx].total_stats=cxt_id++;
16041604
PublishMemoryContext(meminfo,cxt_id,c,path,
1605-
grand_totals,num_contexts,area,100);
1605+
grand_totals,num_contexts,MemoryStatsDsaArea,100);
16061606
}
16071607
memCxtState[idx].total_stats=cxt_id;
16081608

@@ -1632,7 +1632,7 @@ ProcessGetMemoryContextInterrupt(void)
16321632
if (context_id< (max_stats-1)||stats_count <=max_stats)
16331633
{
16341634
/* Copy statistics to DSA memory */
1635-
PublishMemoryContext(meminfo,context_id,cur,path,stat,1,area,100);
1635+
PublishMemoryContext(meminfo,context_id,cur,path,stat,1,MemoryStatsDsaArea,100);
16361636
}
16371637
else
16381638
{
@@ -1657,8 +1657,8 @@ ProcessGetMemoryContextInterrupt(void)
16571657
intnamelen=strlen("Remaining Totals");
16581658

16591659
num_individual_stats=context_id+1;
1660-
meminfo[max_stats-1].name=dsa_allocate(area,namelen+1);
1661-
nameptr=dsa_get_address(area,meminfo[max_stats-1].name);
1660+
meminfo[max_stats-1].name=dsa_allocate(MemoryStatsDsaArea,namelen+1);
1661+
nameptr=dsa_get_address(MemoryStatsDsaArea,meminfo[max_stats-1].name);
16621662
strncpy(nameptr,"Remaining Totals",namelen);
16631663
meminfo[max_stats-1].ident=InvalidDsaPointer;
16641664
meminfo[max_stats-1].path=InvalidDsaPointer;
@@ -1921,18 +1921,18 @@ AtProcExit_memstats_cleanup(int code, Datum arg)
19211921
}
19221922

19231923
/* If the dsa mapping could not be found, attach to the area */
1924-
if (area==NULL)
1925-
area=dsa_attach(memCxtArea->memstats_dsa_handle);
1924+
if (MemoryStatsDsaArea==NULL)
1925+
MemoryStatsDsaArea=dsa_attach(memCxtArea->memstats_dsa_handle);
19261926

19271927
/*
19281928
* Free the memory context statistics, free the name, ident and path
19291929
* pointers before freeing the pointer that contains these pointers and
19301930
* integer statistics.
19311931
*/
1932-
free_memorycontextstate_dsa(area,memCxtState[idx].total_stats,
1932+
free_memorycontextstate_dsa(MemoryStatsDsaArea,memCxtState[idx].total_stats,
19331933
memCxtState[idx].memstats_dsa_pointer);
19341934

1935-
dsa_detach(area);
1935+
dsa_detach(MemoryStatsDsaArea);
19361936
LWLockRelease(&memCxtState[idx].lw_lock);
19371937
}
19381938

‎src/include/utils/memutils.h‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -394,11 +394,11 @@ typedef struct MemoryStatsContextId
394394

395395
externPGDLLIMPORTMemoryStatsBackendState*memCxtState;
396396
externPGDLLIMPORTMemoryStatsCtl*memCxtArea;
397+
externPGDLLIMPORTdsa_area*MemoryStatsDsaArea;
397398
externvoidProcessGetMemoryContextInterrupt(void);
398399
externconstchar*ContextTypeToString(NodeTagtype);
399400
externvoidHandleGetMemoryContextInterrupt(void);
400401
externSizeMemoryContextReportingShmemSize(void);
401402
externvoidMemoryContextReportingShmemInit(void);
402403
externvoidAtProcExit_memstats_cleanup(intcode,Datumarg);
403-
externdsa_area*area;
404404
#endif/* MEMUTILS_H */

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