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more TDB

This commit is contained in:
Hongze Cheng 2022-03-28 05:40:54 +00:00
parent 54ca6c4e8c
commit 4c43901c44
2 changed files with 69 additions and 40 deletions
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101
source/libs/tdb/src/db/tdbOs.c
View File

@ -15,55 +15,84 @@
#include "tdbInt.h"
#ifndef TDB_FOR_TDENGINE
// tdbOsRead
i64 tdbOsRead(tdb_fd_t fd, void *pBuf, i64 nBytes) {
// TODO
ASSERT(0);
return 0;
i64 tdbOsRead(tdb_fd_t fd, void *pData, i64 nBytes) {
i64 nRead = 0;
i64 iRead = 0;
u8 *pBuf = (u8 *)pData;
while (nBytes > 0) {
iRead = read(fd, pBuf, nBytes);
if (iRead < 0) {
if (errno == EINTR) {
continue;
} else {
return -1;
}
} else if (iRead == 0) {
break;
}
nRead += iRead;
pBuf += iRead;
nBytes -= iRead;
}
return nRead;
}
// tdbOsPRead
i64 tdbOsPRead(tdb_fd_t fd, void *pBuf, i64 nBytes, i64 offset) {
// TODO
ASSERT(0);
return 0;
i64 tdbOsPRead(tdb_fd_t fd, void *pData, i64 nBytes, i64 offset) {
i64 nRead = 0;
i64 iRead = 0;
i64 iOffset = offset;
u8 *pBuf = (u8 *)pData;
while (nBytes > 0) {
iRead = pread(fd, pBuf, nBytes, iOffset);
if (iRead < 0) {
if (errno == EINTR) {
continue;
} else {
return -1;
}
} else if (iRead == 0) {
break;
}
nRead += iRead;
pBuf += iRead;
iOffset += iRead;
nBytes -= iRead;
}
return nRead;
}
// tdbOsWrite
i64 taosWriteFile(tdb_fd_t fd, const void *pBuf, i64 nBytes) {
// TODO
ASSERT(0);
return 0;
}
i64 taosWriteFile(tdb_fd_t fd, const void *pData, i64 nBytes) {
i64 nWrite = 0;
i64 iWrite = 0;
u8 *pBuf = (u8 *)pData;
#if 0
int tdbPRead(int fd, void *pData, int count, i64 offset) {
void *pBuf;
int nbytes;
i64 ioffset;
int iread;
while (nBytes > 0) {
iWrite = write(fd, pBuf, nBytes);
if (iWrite < 0) {
if (errno == EINTR) {
continue;
}
pBuf = pData;
nbytes = count;
ioffset = offset;
while (nbytes > 0) {
iread = pread(fd, pBuf, nbytes, ioffset);
if (iread < 0) {
/* TODO */
} else if (iread == 0) {
return (count - iread);
return -1;
}
nbytes = nbytes - iread;
pBuf = (void *)((u8 *)pBuf + iread);
ioffset += iread;
nWrite += iWrite;
pBuf += iWrite;
nBytes -= iWrite;
}
return count;
return nWrite;
}
int tdbWrite(int fd, void *pData, int count) {
// TODO
return write(fd, pData, count);
}
#endif

8
source/libs/tdb/src/inc/tdbOs.h
View File

@ -21,7 +21,7 @@ extern "C" {
#endif
// TODO: use cmake to control the option
#define TDB_FOR_TDENGINE
// #define TDB_FOR_TDENGINE
// For memory -----------------
#ifdef TDB_FOR_TDENGINE
@ -67,9 +67,9 @@ typedef int tdb_fd_t;
#define tdbOsOpen open
#define tdbOsClose close
i64 tdbOsRead(tdb_fd_t fd, void *pBuf, i64 nBytes);
i64 tdbOsPRead(tdb_fd_t fd, void *pBuf, i64 nBytes, i64 offset);
i64 taosWriteFile(tdb_fd_t fd, const void *pBuf, i64 nBytes);
i64 tdbOsRead(tdb_fd_t fd, void *pData, i64 nBytes);
i64 tdbOsPRead(tdb_fd_t fd, void *pData, i64 nBytes, i64 offset);
i64 taosWriteFile(tdb_fd_t fd, const void *pData, i64 nBytes);
#define tdbOsFSync fsync
#define tdbOsLSeek lseek