Skip to content

T
TDengine

taosdata / TDengine
1 年多 前同步成功

通知 1185
Star 22016
Fork 4786
T
TDengine
提交 ca7e62d9 编写于 作者: S Shengliang Guan
浏览文件
操作

pagedbuf

上级 6834200d
隐藏空白更改
内联 并排
Showing with 131 addition and 118 deletion
include/util/tpagedbuf.h
浏览文件 @ ca7e62d9
......@@ -13,24 +13,23 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TDENGINE_TPAGEDBUF_H
#define TDENGINE_TPAGEDBUF_H
#ifndef _TD_UTIL_PAGEDBUF_H_
#define _TD_UTIL_PAGEDBUF_H_
#include "thash.h"
#include "tlist.h"
#include "tlockfree.h"
#ifdef __cplusplus
extern "C" {
#endif
#include "tlist.h"
#include "thash.h"
#include "os.h"
#include "tlockfree.h"
typedef struct SArray* SIDList;
typedef struct SPageInfo SPageInfo;
typedef struct SArray* SIDList;
typedef struct SPageInfo SPageInfo;
typedef struct SDiskbasedBuf SDiskbasedBuf;
#define DEFAULT_INTERN_BUF_PAGE_SIZE (1024L) // in bytes
#define DEFAULT_PAGE_SIZE (16384L)
#define DEFAULT_INTERN_BUF_PAGE_SIZE (1024L) // in bytes
#define DEFAULT_PAGE_SIZE (16384L)
typedef struct SFilePage {
int64_t num;
......@@ -55,7 +54,8 @@ typedef struct SDiskbasedBufStatis {
* @param handle
* @return
*/
int32_t createDiskbasedBuffer(SDiskbasedBuf** pBuf, int32_t pagesize, int32_t inMemBufSize, uint64_t qId, const char* dir);
int32_t createDiskbasedBuffer(SDiskbasedBuf** pBuf, int32_t pagesize, int32_t inMemBufSize, uint64_t qId,
const char* dir);
/**
*
......@@ -168,4 +168,4 @@ SDiskbasedBufStatis getDBufStatis(const SDiskbasedBuf* pBuf);
}
#endif
#endif // TDENGINE_TPAGEDBUF_H
#endif // _TD_UTIL_PAGEDBUF_H_
source/util/src/tpagedbuf.c
浏览文件 @ ca7e62d9
#include "tlog.h"
/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _DEFAULT_SOURCE
#include "tpagedbuf.h"
#include "taoserror.h"
#include "tcompression.h"
#include "thash.h"
#include "tlog.h"
#define GET_DATA_PAYLOAD(_p) ((char *)(_p)->pData + POINTER_BYTES)
#define GET_DATA_PAYLOAD(_p) ((char*)(_p)->pData + POINTER_BYTES)
#define NO_IN_MEM_AVAILABLE_PAGES(_b) (listNEles((_b)->lruList) >= (_b)->inMemPages)
typedef struct SFreeListItem {
......@@ -13,62 +29,63 @@ typedef struct SFreeListItem {
} SFreeListItem;
typedef struct SPageDiskInfo {
int64_t offset;
int32_t length;
int64_t offset;
int32_t length;
} SPageDiskInfo;
typedef struct SPageInfo {
SListNode* pn; // point to list node
void* pData;
int64_t offset;
int32_t pageId;
int32_t length:30;
bool used:1; // set current page is in used
bool dirty:1; // set current buffer page is dirty or not
SListNode* pn; // point to list node
void* pData;
int64_t offset;
int32_t pageId;
int32_t length : 30;
bool used : 1; // set current page is in used
bool dirty : 1; // set current buffer page is dirty or not
} SPageInfo;
typedef struct SDiskbasedBuf {
int32_t numOfPages;
int64_t totalBufSize;
uint64_t fileSize; // disk file size
uint64_t fileSize; // disk file size
TdFilePtr pFile;
int32_t allocateId; // allocated page id
char* path; // file path
int32_t pageSize; // current used page size
int32_t inMemPages; // numOfPages that are allocated in memory
SHashObj* groupSet; // id hash table
int32_t allocateId; // allocated page id
char* path; // file path
int32_t pageSize; // current used page size
int32_t inMemPages; // numOfPages that are allocated in memory
SHashObj* groupSet; // id hash table
SHashObj* all;
SList* lruList;
void* emptyDummyIdList; // dummy id list
void* assistBuf; // assistant buffer for compress/decompress data
SArray* pFree; // free area in file
bool comp; // compressed before flushed to disk
uint64_t nextPos; // next page flush position
uint64_t qId; // for debug purpose
bool printStatis; // Print statistics info when closing this buffer.
void* emptyDummyIdList; // dummy id list
void* assistBuf; // assistant buffer for compress/decompress data
SArray* pFree; // free area in file
bool comp; // compressed before flushed to disk
uint64_t nextPos; // next page flush position
uint64_t qId; // for debug purpose
bool printStatis; // Print statistics info when closing this buffer.
SDiskbasedBufStatis statis;
} SDiskbasedBuf;
static void printStatisData(const SDiskbasedBuf* pBuf);
int32_t createDiskbasedBuffer(SDiskbasedBuf** pBuf, int32_t pagesize, int32_t inMemBufSize, uint64_t qId, const char* dir) {
int32_t createDiskbasedBuffer(SDiskbasedBuf** pBuf, int32_t pagesize, int32_t inMemBufSize, uint64_t qId,
const char* dir) {
*pBuf = calloc(1, sizeof(SDiskbasedBuf));
SDiskbasedBuf* pResBuf = *pBuf;
if (pResBuf == NULL) {
return TSDB_CODE_OUT_OF_MEMORY;
return TSDB_CODE_OUT_OF_MEMORY;
}
pResBuf->pageSize = pagesize;
pResBuf->numOfPages = 0; // all pages are in buffer in the first place
pResBuf->pageSize = pagesize;
pResBuf->numOfPages = 0; // all pages are in buffer in the first place
pResBuf->totalBufSize = 0;
pResBuf->inMemPages = inMemBufSize/pagesize; // maximum allowed pages, it is a soft limit.
pResBuf->allocateId = -1;
pResBuf->comp = true;
pResBuf->pFile = NULL;
pResBuf->qId = qId;
pResBuf->fileSize = 0;
pResBuf->inMemPages = inMemBufSize / pagesize; // maximum allowed pages, it is a soft limit.
pResBuf->allocateId = -1;
pResBuf->comp = true;
pResBuf->pFile = NULL;
pResBuf->qId = qId;
pResBuf->fileSize = 0;
// at least more than 2 pages must be in memory
assert(inMemBufSize >= pagesize * 2);
......@@ -76,8 +93,8 @@ static void printStatisData(const SDiskbasedBuf* pBuf);
pResBuf->lruList = tdListNew(POINTER_BYTES);
// init id hash table
pResBuf->groupSet = taosHashInit(10, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, false);
pResBuf->assistBuf = malloc(pResBuf->pageSize + 2); // EXTRA BYTES
pResBuf->groupSet = taosHashInit(10, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, false);
pResBuf->assistBuf = malloc(pResBuf->pageSize + 2); // EXTRA BYTES
pResBuf->all = taosHashInit(10, taosGetDefaultHashFunction(TSDB_DATA_TYPE_INT), true, false);
char path[PATH_MAX] = {0};
......@@ -86,8 +103,9 @@ static void printStatisData(const SDiskbasedBuf* pBuf);
pResBuf->emptyDummyIdList = taosArrayInit(1, sizeof(int32_t));
// qDebug("QInfo:0x%"PRIx64" create resBuf for output, page size:%d, inmem buf pages:%d, file:%s", qId, pResBuf->pageSize,
// pResBuf->inMemPages, pResBuf->path);
// qDebug("QInfo:0x%"PRIx64" create resBuf for output, page size:%d, inmem buf pages:%d, file:%s", qId,
// pResBuf->pageSize,
// pResBuf->inMemPages, pResBuf->path);
return TSDB_CODE_SUCCESS;
}
......@@ -96,14 +114,14 @@ static int32_t createDiskFile(SDiskbasedBuf* pBuf) {
// pBuf->file = fopen(pBuf->path, "wb+");
pBuf->pFile = taosOpenFile(pBuf->path, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_READ | TD_FILE_TRUNC);
if (pBuf->pFile == NULL) {
// qError("failed to create tmp file: %s on disk. %s", pBuf->path, strerror(errno));
// qError("failed to create tmp file: %s on disk. %s", pBuf->path, strerror(errno));
return TAOS_SYSTEM_ERROR(errno);
}
return TSDB_CODE_SUCCESS;
}
static char* doCompressData(void* data, int32_t srcSize, int32_t *dst, SDiskbasedBuf* pBuf) { // do nothing
static char* doCompressData(void* data, int32_t srcSize, int32_t* dst, SDiskbasedBuf* pBuf) { // do nothing
if (!pBuf->comp) {
*dst = srcSize;
return data;
......@@ -115,13 +133,14 @@ static char* doCompressData(void* data, int32_t srcSize, int32_t *dst, SDiskbase
return data;
}
static char* doDecompressData(void* data, int32_t srcSize, int32_t *dst, SDiskbasedBuf* pBuf) { // do nothing
static char* doDecompressData(void* data, int32_t srcSize, int32_t* dst, SDiskbasedBuf* pBuf) { // do nothing
if (!pBuf->comp) {
*dst = srcSize;
return data;
}
*dst = tsDecompressString(data, srcSize, 1, pBuf->assistBuf, pBuf->pageSize+sizeof(SFilePage), ONE_STAGE_COMP, NULL, 0);
*dst = tsDecompressString(data, srcSize, 1, pBuf->assistBuf, pBuf->pageSize + sizeof(SFilePage), ONE_STAGE_COMP, NULL,
0);
if (*dst > 0) {
memcpy(data, pBuf->assistBuf, *dst);
}
......@@ -135,7 +154,7 @@ static uint64_t allocatePositionInFile(SDiskbasedBuf* pBuf, size_t size) {
int32_t offset = -1;
size_t num = taosArrayGetSize(pBuf->pFree);
for(int32_t i = 0; i < num; ++i) {
for (int32_t i = 0; i < num; ++i) {
SFreeListItem* pi = taosArrayGet(pBuf->pFree, i);
if (pi->len >= size) {
offset = pi->offset;
......@@ -157,7 +176,7 @@ static char* doFlushPageToDisk(SDiskbasedBuf* pBuf, SPageInfo* pg) {
int32_t size = -1;
char* t = NULL;
if (pg->offset == -1 || pg->dirty) {
SFilePage* pPage = (SFilePage*) GET_DATA_PAYLOAD(pg);
SFilePage* pPage = (SFilePage*)GET_DATA_PAYLOAD(pg);
t = doCompressData(pPage->data, pBuf->pageSize, &size, pBuf);
}
......@@ -174,7 +193,7 @@ static char* doFlushPageToDisk(SDiskbasedBuf* pBuf, SPageInfo* pg) {
return NULL;
}
ret = (int32_t) taosWriteFile(pBuf->pFile, t, size);
ret = (int32_t)taosWriteFile(pBuf->pFile, t, size);
if (ret != size) {
terrno = TAOS_SYSTEM_ERROR(errno);
return NULL;
......@@ -205,7 +224,7 @@ static char* doFlushPageToDisk(SDiskbasedBuf* pBuf, SPageInfo* pg) {
return NULL;
}
ret = (int32_t) taosWriteFile(pBuf->pFile, t, size);
ret = (int32_t)taosWriteFile(pBuf->pFile, t, size);
if (ret != size) {
terrno = TAOS_SYSTEM_ERROR(errno);
return NULL;
......@@ -222,16 +241,16 @@ static char* doFlushPageToDisk(SDiskbasedBuf* pBuf, SPageInfo* pg) {
char* pDataBuf = pg->pData;
memset(pDataBuf, 0, pBuf->pageSize + sizeof(SFilePage));
pg->pData = NULL; // this means the data is not in buffer
pg->pData = NULL; // this means the data is not in buffer
pg->length = size;
pg->dirty = false;
pg->dirty = false;
return pDataBuf;
}
static char* flushPageToDisk(SDiskbasedBuf* pBuf, SPageInfo* pg) {
int32_t ret = TSDB_CODE_SUCCESS;
assert(((int64_t) pBuf->numOfPages * pBuf->pageSize) == pBuf->totalBufSize && pBuf->numOfPages >= pBuf->inMemPages);
assert(((int64_t)pBuf->numOfPages * pBuf->pageSize) == pBuf->totalBufSize && pBuf->numOfPages >= pBuf->inMemPages);
if (pBuf->pFile == NULL) {
if ((ret = createDiskFile(pBuf)) != TSDB_CODE_SUCCESS) {
......@@ -251,7 +270,7 @@ static int32_t loadPageFromDisk(SDiskbasedBuf* pBuf, SPageInfo* pg) {
return ret;
}
SFilePage* pPage = (SFilePage*) GET_DATA_PAYLOAD(pg);
SFilePage* pPage = (SFilePage*)GET_DATA_PAYLOAD(pg);
ret = (int32_t)taosReadFile(pBuf->pFile, pPage->data, pg->length);
if (ret != pg->length) {
ret = TAOS_SYSTEM_ERROR(errno);
......@@ -267,7 +286,7 @@ static int32_t loadPageFromDisk(SDiskbasedBuf* pBuf, SPageInfo* pg) {
}
static SIDList addNewGroup(SDiskbasedBuf* pBuf, int32_t groupId) {
assert(taosHashGet(pBuf->groupSet, (const char*) &groupId, sizeof(int32_t)) == NULL);
assert(taosHashGet(pBuf->groupSet, (const char*)&groupId, sizeof(int32_t)) == NULL);
SArray* pa = taosArrayInit(1, POINTER_BYTES);
int32_t ret = taosHashPut(pBuf->groupSet, (const char*)&groupId, sizeof(int32_t), &pa, POINTER_BYTES);
......@@ -283,21 +302,21 @@ static SPageInfo* registerPage(SDiskbasedBuf* pBuf, int32_t groupId, int32_t pag
if (p == NULL) { // it is a new group id
list = addNewGroup(pBuf, groupId);
} else {
list = (SIDList) (*p);
list = (SIDList)(*p);
}
pBuf->numOfPages += 1;
SPageInfo* ppi = malloc(sizeof(SPageInfo));//{ .info = PAGE_INFO_INITIALIZER, .pageId = pageId, .pn = NULL};
SPageInfo* ppi = malloc(sizeof(SPageInfo)); //{ .info = PAGE_INFO_INITIALIZER, .pageId = pageId, .pn = NULL};
ppi->pageId = pageId;
ppi->pData = NULL;
ppi->pData = NULL;
ppi->offset = -1;
ppi->length = -1;
ppi->used = true;
ppi->pn = NULL;
ppi->used = true;
ppi->pn = NULL;
return *(SPageInfo**) taosArrayPush(list, &ppi);
return *(SPageInfo**)taosArrayPush(list, &ppi);
}
static SListNode* getEldestUnrefedPage(SDiskbasedBuf* pBuf) {
......@@ -305,10 +324,10 @@ static SListNode* getEldestUnrefedPage(SDiskbasedBuf* pBuf) {
tdListInitIter(pBuf->lruList, &iter, TD_LIST_BACKWARD);
SListNode* pn = NULL;
while((pn = tdListNext(&iter)) != NULL) {
while ((pn = tdListNext(&iter)) != NULL) {
assert(pn != NULL);
SPageInfo* pageInfo = *(SPageInfo**) pn->data;
SPageInfo* pageInfo = *(SPageInfo**)pn->data;
assert(pageInfo->pageId >= 0 && pageInfo->pn == pn);
if (!pageInfo->used) {
......@@ -320,7 +339,7 @@ static SListNode* getEldestUnrefedPage(SDiskbasedBuf* pBuf) {
}
static char* evacOneDataPage(SDiskbasedBuf* pBuf) {
char* bufPage = NULL;
char* bufPage = NULL;
SListNode* pn = getEldestUnrefedPage(pBuf);
// all pages are referenced by user, try to allocate new space
......@@ -331,12 +350,12 @@ static char* evacOneDataPage(SDiskbasedBuf* pBuf) {
// increase by 50% of previous mem pages
pBuf->inMemPages = (int32_t)(pBuf->inMemPages * 1.5f);
// qWarn("%p in memory buf page not sufficient, expand from %d to %d, page size:%d", pBuf, prev,
// pBuf->inMemPages, pBuf->pageSize);
// qWarn("%p in memory buf page not sufficient, expand from %d to %d, page size:%d", pBuf, prev,
// pBuf->inMemPages, pBuf->pageSize);
} else {
tdListPopNode(pBuf->lruList, pn);
SPageInfo* d = *(SPageInfo**) pn->data;
SPageInfo* d = *(SPageInfo**)pn->data;
assert(d->pn == pn);
d->pn = NULL;
......@@ -348,13 +367,13 @@ static char* evacOneDataPage(SDiskbasedBuf* pBuf) {
return bufPage;
}
static void lruListPushFront(SList *pList, SPageInfo* pi) {
static void lruListPushFront(SList* pList, SPageInfo* pi) {
tdListPrepend(pList, &pi);
SListNode* front = tdListGetHead(pList);
pi->pn = front;
}
static void lruListMoveToFront(SList *pList, SPageInfo* pi) {
static void lruListMoveToFront(SList* pList, SPageInfo* pi) {
tdListPopNode(pList, pi->pn);
tdListPrependNode(pList, pi->pn);
}
......@@ -401,7 +420,7 @@ SFilePage* getNewDataBuf(SDiskbasedBuf* pBuf, int32_t groupId, int32_t* pageId)
((void**)pi->pData)[0] = pi;
pi->used = true;
return (void *)(GET_DATA_PAYLOAD(pi));
return (void*)(GET_DATA_PAYLOAD(pi));
}
SFilePage* getBufPage(SDiskbasedBuf* pBuf, int32_t id) {
......@@ -411,22 +430,22 @@ SFilePage* getBufPage(SDiskbasedBuf* pBuf, int32_t id) {
SPageInfo** pi = taosHashGet(pBuf->all, &id, sizeof(int32_t));
assert(pi != NULL && *pi != NULL);
if ((*pi)->pData != NULL) { // it is in memory
if ((*pi)->pData != NULL) { // it is in memory
// no need to update the LRU list if only one page exists
if (pBuf->numOfPages == 1) {
(*pi)->used = true;
return (void *)(GET_DATA_PAYLOAD(*pi));
return (void*)(GET_DATA_PAYLOAD(*pi));
}
SPageInfo** pInfo = (SPageInfo**) ((*pi)->pn->data);
SPageInfo** pInfo = (SPageInfo**)((*pi)->pn->data);
assert(*pInfo == *pi);
lruListMoveToFront(pBuf->lruList, (*pi));
(*pi)->used = true;
return (void *)(GET_DATA_PAYLOAD(*pi));
return (void*)(GET_DATA_PAYLOAD(*pi));
} else { // not in memory
} else { // not in memory
assert((*pi)->pData == NULL && (*pi)->pn == NULL && (*pi)->length >= 0 && (*pi)->offset >= 0);
char* availablePage = NULL;
......@@ -453,16 +472,16 @@ SFilePage* getBufPage(SDiskbasedBuf* pBuf, int32_t id) {
return NULL;
}
return (void *)(GET_DATA_PAYLOAD(*pi));
return (void*)(GET_DATA_PAYLOAD(*pi));
}
}
void releaseBufPage(SDiskbasedBuf* pBuf, void* page) {
assert(pBuf != NULL && page != NULL);
int32_t offset = offsetof(SPageInfo, pData);
char* p = page - offset;
char* p = page - offset;
SPageInfo* ppi = ((SPageInfo**) p)[0];
SPageInfo* ppi = ((SPageInfo**)p)[0];
releaseBufPageInfo(pBuf, ppi);
}
......@@ -484,7 +503,7 @@ SIDList getDataBufPagesIdList(SDiskbasedBuf* pBuf, int32_t groupId) {
if (p == NULL) { // it is a new group id
return pBuf->emptyDummyIdList;
} else {
return (SArray*) (*p);
return (SArray*)(*p);
}
}
......@@ -496,30 +515,34 @@ void destroyResultBuf(SDiskbasedBuf* pBuf) {
printStatisData(pBuf);
if (pBuf->pFile != NULL) {
uDebug("Paged buffer closed, total:%.2f Kb (%d Pages), inmem size:%.2f Kb (%d Pages), file size:%.2f Kb, page size:%.2f Kb, %"PRIx64"\n",
pBuf->totalBufSize/1024.0, pBuf->numOfPages, listNEles(pBuf->lruList) * pBuf->pageSize / 1024.0,
listNEles(pBuf->lruList), pBuf->fileSize/1024.0, pBuf->pageSize/1024.0f, pBuf->qId);
uDebug(
"Paged buffer closed, total:%.2f Kb (%d Pages), inmem size:%.2f Kb (%d Pages), file size:%.2f Kb, page "
"size:%.2f Kb, %" PRIx64 "\n",
pBuf->totalBufSize / 1024.0, pBuf->numOfPages, listNEles(pBuf->lruList) * pBuf->pageSize / 1024.0,
listNEles(pBuf->lruList), pBuf->fileSize / 1024.0, pBuf->pageSize / 1024.0f, pBuf->qId);
taosCloseFile(&pBuf->pFile);
taosCloseFile(&pBuf->pFile);
} else {
uDebug("Paged buffer closed, total:%.2f Kb, no file created, %"PRIx64, pBuf->totalBufSize/1024.0, pBuf->qId);
uDebug("Paged buffer closed, total:%.2f Kb, no file created, %" PRIx64, pBuf->totalBufSize / 1024.0, pBuf->qId);
}
// print the statistics information
{
SDiskbasedBufStatis *ps = &pBuf->statis;
uDebug("Get/Release pages:%d/%d, flushToDisk:%.2f Kb (%d Pages), loadFromDisk:%.2f Kb (%d Pages), avgPageSize:%.2f Kb\n"
, ps->getPages, ps->releasePages, ps->flushBytes/1024.0f, ps->flushPages, ps->loadBytes/1024.0f, ps->loadPages
, ps->loadBytes/(1024.0 * ps->loadPages));
SDiskbasedBufStatis* ps = &pBuf->statis;
uDebug(
"Get/Release pages:%d/%d, flushToDisk:%.2f Kb (%d Pages), loadFromDisk:%.2f Kb (%d Pages), avgPageSize:%.2f "
"Kb\n",
ps->getPages, ps->releasePages, ps->flushBytes / 1024.0f, ps->flushPages, ps->loadBytes / 1024.0f,
ps->loadPages, ps->loadBytes / (1024.0 * ps->loadPages));
}
remove(pBuf->path);
tfree(pBuf->path);
SArray** p = taosHashIterate(pBuf->groupSet, NULL);
while(p) {
while (p) {
size_t n = taosArrayGetSize(*p);
for(int32_t i = 0; i < n; ++i) {
for (int32_t i = 0; i < n; ++i) {
SPageInfo* pi = taosArrayGetP(*p, i);
tfree(pi->pData);
tfree(pi);
......@@ -539,7 +562,7 @@ void destroyResultBuf(SDiskbasedBuf* pBuf) {
}
SPageInfo* getLastPageInfo(SIDList pList) {
size_t size = taosArrayGetSize(pList);
size_t size = taosArrayGetSize(pList);
SPageInfo* pPgInfo = taosArrayGetP(pList, size - 1);
return pPgInfo;
}
......@@ -549,33 +572,23 @@ int32_t getPageId(const SPageInfo* pPgInfo) {
return pPgInfo->pageId;
}
int32_t getBufPageSize(const SDiskbasedBuf* pBuf) {
return pBuf->pageSize;
}
int32_t getBufPageSize(const SDiskbasedBuf* pBuf) { return pBuf->pageSize; }
int32_t getNumOfInMemBufPages(const SDiskbasedBuf* pBuf) {
return pBuf->inMemPages;
}
int32_t getNumOfInMemBufPages(const SDiskbasedBuf* pBuf) { return pBuf->inMemPages; }
bool isAllDataInMemBuf(const SDiskbasedBuf* pBuf) {
return pBuf->fileSize == 0;
}
bool isAllDataInMemBuf(const SDiskbasedBuf* pBuf) { return pBuf->fileSize == 0; }
void setBufPageDirty(SFilePage* pPage, bool dirty) {
int32_t offset = offsetof(SPageInfo, pData); // todo extract method
char* p = (char*)pPage - offset;
char* p = (char*)pPage - offset;
SPageInfo* ppi = ((SPageInfo**) p)[0];
SPageInfo* ppi = ((SPageInfo**)p)[0];
ppi->dirty = dirty;
}
void printStatisBeforeClose(SDiskbasedBuf* pBuf) {
pBuf->printStatis = true;
}
void printStatisBeforeClose(SDiskbasedBuf* pBuf) { pBuf->printStatis = true; }
SDiskbasedBufStatis getDBufStatis(const SDiskbasedBuf* pBuf) {
return pBuf->statis;
}
SDiskbasedBufStatis getDBufStatis(const SDiskbasedBuf* pBuf) { return pBuf->statis; }
void printStatisData(const SDiskbasedBuf* pBuf) {
if (!pBuf->printStatis) {
......
Markdown is supported
0% 或 .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑！
想要评论请 注册 或