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Addded "interpretRid" which knows how to call the "dereference*" functions.

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This commit is contained in:
Sears Russell 2006-08-11 02:24:01 +00:00
parent 33ca0d3254
commit 7dada65a13
3 changed files with 40 additions and 37 deletions
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30
src/lladd/page.c
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@ -88,6 +88,8 @@ terms specified in this license.
#include <lladd/compensations.h>
#include "page/slotted.h"
#include "page/fixed.h"
#include "page/indirect.h"
#include <lladd/operations/arrayList.h>
#include <lladd/bufferPool.h>
#include <lladd/truncation.h>
void pageWriteLSN(int xid, Page * page, lsn_t lsn) {
@ -263,3 +265,31 @@ void writeRecordUnlocked(int xid, Page * p, lsn_t lsn, recordid rid, const void
}
recordid interpretRidUnlocked(int xid, recordid rid, Page * p) {
int page_type = *page_type_ptr(p);
if(page_type == SLOTTED_PAGE || page_type == FIXED_PAGE || (!page_type) || page_type == BOUNDARY_TAG_PAGE ) {
} else if(page_type == INDIRECT_PAGE) {
rid = dereferenceRIDUnlocked(xid, rid);
} else if(page_type == ARRAY_LIST_PAGE) {
rid = dereferenceArrayListRidUnlocked(p, rid.slot);
} else {
abort();
}
return rid;
}
recordid interpretRid(int xid, recordid rid, Page * p) {
int page_type = *page_type_ptr(p);
if(page_type == SLOTTED_PAGE || page_type == FIXED_PAGE || (!page_type) || page_type == BOUNDARY_TAG_PAGE ) {
} else if(page_type == INDIRECT_PAGE) {
rid = dereferenceRID(xid, rid);
} else if(page_type == ARRAY_LIST_PAGE) {
rid = dereferenceArrayListRid(p, rid.slot);
} else {
abort();
}
return rid;
}

3
src/lladd/page.h
View file

@ -278,6 +278,9 @@ int getRecordTypeUnlocked(int xid, Page * p, recordid rid);
*/
int getRecordLength(int xid, Page * p, recordid rid);
recordid interpretRid(int xid, recordid rid, Page * p);
recordid interpretRidUnlocked(int xid, recordid rid, Page * p);
END_C_DECLS
#endif

44
src/lladd/transactional2.c
View file

@ -214,7 +214,7 @@ compensated_function void Tupdate(int xid, recordid rid, const void *dat, int op
rid = dereferenceRID(xid, rid);
p = loadPage(xid, rid.page);
} end;
/** @todo Kludge! Shouldn't special case operations in transactional2. */
// @todo Kludge! Shouldn't special case operations in transactional2.
} else if(*page_type_ptr(p) == ARRAY_LIST_PAGE &&
op != OPERATION_LINEAR_INSERT &&
op != OPERATION_UNDO_LINEAR_INSERT &&
@ -240,25 +240,11 @@ void TreadUnlocked(int xid, recordid rid, void * dat) {
try {
p = loadPage(xid, rid.page);
} end;
int page_type = *page_type_ptr(p);
if(page_type == SLOTTED_PAGE || page_type == FIXED_PAGE || (!page_type) || page_type == BOUNDARY_TAG_PAGE ) {
} else if(page_type == INDIRECT_PAGE) {
rid = interpretRidUnlocked(xid, rid, p);
if(rid.page != p->id) {
releasePage(p);
try {
rid = dereferenceRIDUnlocked(xid, rid);
p = loadPage(xid, rid.page);
} end;
} else if(page_type == ARRAY_LIST_PAGE) {
rid = dereferenceArrayListRidUnlocked(p, rid.slot);
releasePage(p);
try {
p = loadPage(xid, rid.page);
} end;
} else {
abort();
p = loadPage(xid, rid.page);
}
readRecordUnlocked(xid, p, rid, dat);
releasePage(p);
@ -269,27 +255,11 @@ compensated_function void Tread(int xid, recordid rid, void * dat) {
try {
p = loadPage(xid, rid.page);
} end;
int page_type = *page_type_ptr(p);
if(page_type == SLOTTED_PAGE || page_type == FIXED_PAGE || (!page_type) || page_type == BOUNDARY_TAG_PAGE ) {
} else if(page_type == INDIRECT_PAGE) {
rid = interpretRid(xid, rid, p);
if(rid.page != p->id) {
releasePage(p);
try {
rid = dereferenceRID(xid, rid);
} end;
try {
p = loadPage(xid, rid.page);
} end;
} else if(page_type == ARRAY_LIST_PAGE) {
rid = dereferenceArrayListRid(p, rid.slot);
releasePage(p);
try {
p = loadPage(xid, rid.page);
} end;
} else {
abort();
p = loadPage(xid, rid.page);
}
readRecord(xid, p, rid, dat);
releasePage(p);