| Index: third_party/sqlite/src/src/test_vfstrace.c
|
| diff --git a/third_party/sqlite/src/src/test_vfstrace.c b/third_party/sqlite/src/src/test_vfstrace.c
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..073eab631b9c0a7acfd8798856c796f153d459cd
|
| --- /dev/null
|
| +++ b/third_party/sqlite/src/src/test_vfstrace.c
|
| @@ -0,0 +1,773 @@
|
| +/*
|
| +** 2011 March 16
|
| +**
|
| +** The author disclaims copyright to this source code. In place of
|
| +** a legal notice, here is a blessing:
|
| +**
|
| +** May you do good and not evil.
|
| +** May you find forgiveness for yourself and forgive others.
|
| +** May you share freely, never taking more than you give.
|
| +**
|
| +******************************************************************************
|
| +**
|
| +** This file contains code implements a VFS shim that writes diagnostic
|
| +** output for each VFS call, similar to "strace".
|
| +*/
|
| +#include <stdlib.h>
|
| +#include <string.h>
|
| +#include "sqlite3.h"
|
| +
|
| +/*
|
| +** An instance of this structure is attached to the each trace VFS to
|
| +** provide auxiliary information.
|
| +*/
|
| +typedef struct vfstrace_info vfstrace_info;
|
| +struct vfstrace_info {
|
| + sqlite3_vfs *pRootVfs; /* The underlying real VFS */
|
| + int (*xOut)(const char*, void*); /* Send output here */
|
| + void *pOutArg; /* First argument to xOut */
|
| + const char *zVfsName; /* Name of this trace-VFS */
|
| + sqlite3_vfs *pTraceVfs; /* Pointer back to the trace VFS */
|
| +};
|
| +
|
| +/*
|
| +** The sqlite3_file object for the trace VFS
|
| +*/
|
| +typedef struct vfstrace_file vfstrace_file;
|
| +struct vfstrace_file {
|
| + sqlite3_file base; /* Base class. Must be first */
|
| + vfstrace_info *pInfo; /* The trace-VFS to which this file belongs */
|
| + const char *zFName; /* Base name of the file */
|
| + sqlite3_file *pReal; /* The real underlying file */
|
| +};
|
| +
|
| +/*
|
| +** Method declarations for vfstrace_file.
|
| +*/
|
| +static int vfstraceClose(sqlite3_file*);
|
| +static int vfstraceRead(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst);
|
| +static int vfstraceWrite(sqlite3_file*,const void*,int iAmt, sqlite3_int64);
|
| +static int vfstraceTruncate(sqlite3_file*, sqlite3_int64 size);
|
| +static int vfstraceSync(sqlite3_file*, int flags);
|
| +static int vfstraceFileSize(sqlite3_file*, sqlite3_int64 *pSize);
|
| +static int vfstraceLock(sqlite3_file*, int);
|
| +static int vfstraceUnlock(sqlite3_file*, int);
|
| +static int vfstraceCheckReservedLock(sqlite3_file*, int *);
|
| +static int vfstraceFileControl(sqlite3_file*, int op, void *pArg);
|
| +static int vfstraceSectorSize(sqlite3_file*);
|
| +static int vfstraceDeviceCharacteristics(sqlite3_file*);
|
| +static int vfstraceShmLock(sqlite3_file*,int,int,int);
|
| +static int vfstraceShmMap(sqlite3_file*,int,int,int, void volatile **);
|
| +static void vfstraceShmBarrier(sqlite3_file*);
|
| +static int vfstraceShmUnmap(sqlite3_file*,int);
|
| +
|
| +/*
|
| +** Method declarations for vfstrace_vfs.
|
| +*/
|
| +static int vfstraceOpen(sqlite3_vfs*, const char *, sqlite3_file*, int , int *);
|
| +static int vfstraceDelete(sqlite3_vfs*, const char *zName, int syncDir);
|
| +static int vfstraceAccess(sqlite3_vfs*, const char *zName, int flags, int *);
|
| +static int vfstraceFullPathname(sqlite3_vfs*, const char *zName, int, char *);
|
| +static void *vfstraceDlOpen(sqlite3_vfs*, const char *zFilename);
|
| +static void vfstraceDlError(sqlite3_vfs*, int nByte, char *zErrMsg);
|
| +static void (*vfstraceDlSym(sqlite3_vfs*,void*, const char *zSymbol))(void);
|
| +static void vfstraceDlClose(sqlite3_vfs*, void*);
|
| +static int vfstraceRandomness(sqlite3_vfs*, int nByte, char *zOut);
|
| +static int vfstraceSleep(sqlite3_vfs*, int microseconds);
|
| +static int vfstraceCurrentTime(sqlite3_vfs*, double*);
|
| +static int vfstraceGetLastError(sqlite3_vfs*, int, char*);
|
| +static int vfstraceCurrentTimeInt64(sqlite3_vfs*, sqlite3_int64*);
|
| +static int vfstraceSetSystemCall(sqlite3_vfs*,const char*, sqlite3_syscall_ptr);
|
| +static sqlite3_syscall_ptr vfstraceGetSystemCall(sqlite3_vfs*, const char *);
|
| +static const char *vfstraceNextSystemCall(sqlite3_vfs*, const char *zName);
|
| +
|
| +/*
|
| +** Return a pointer to the tail of the pathname. Examples:
|
| +**
|
| +** /home/drh/xyzzy.txt -> xyzzy.txt
|
| +** xyzzy.txt -> xyzzy.txt
|
| +*/
|
| +static const char *fileTail(const char *z){
|
| + int i;
|
| + if( z==0 ) return 0;
|
| + i = strlen(z)-1;
|
| + while( i>0 && z[i-1]!='/' ){ i--; }
|
| + return &z[i];
|
| +}
|
| +
|
| +/*
|
| +** Send trace output defined by zFormat and subsequent arguments.
|
| +*/
|
| +static void vfstrace_printf(
|
| + vfstrace_info *pInfo,
|
| + const char *zFormat,
|
| + ...
|
| +){
|
| + va_list ap;
|
| + char *zMsg;
|
| + va_start(ap, zFormat);
|
| + zMsg = sqlite3_vmprintf(zFormat, ap);
|
| + va_end(ap);
|
| + pInfo->xOut(zMsg, pInfo->pOutArg);
|
| + sqlite3_free(zMsg);
|
| +}
|
| +
|
| +/*
|
| +** Convert value rc into a string and print it using zFormat. zFormat
|
| +** should have exactly one %s
|
| +*/
|
| +static void vfstrace_print_errcode(
|
| + vfstrace_info *pInfo,
|
| + const char *zFormat,
|
| + int rc
|
| +){
|
| + char zBuf[50];
|
| + char *zVal;
|
| + switch( rc ){
|
| + case SQLITE_OK: zVal = "SQLITE_OK"; break;
|
| + case SQLITE_ERROR: zVal = "SQLITE_ERROR"; break;
|
| + case SQLITE_PERM: zVal = "SQLITE_PERM"; break;
|
| + case SQLITE_ABORT: zVal = "SQLITE_ABORT"; break;
|
| + case SQLITE_BUSY: zVal = "SQLITE_BUSY"; break;
|
| + case SQLITE_NOMEM: zVal = "SQLITE_NOMEM"; break;
|
| + case SQLITE_READONLY: zVal = "SQLITE_READONLY"; break;
|
| + case SQLITE_INTERRUPT: zVal = "SQLITE_INTERRUPT"; break;
|
| + case SQLITE_IOERR: zVal = "SQLITE_IOERR"; break;
|
| + case SQLITE_CORRUPT: zVal = "SQLITE_CORRUPT"; break;
|
| + case SQLITE_FULL: zVal = "SQLITE_FULL"; break;
|
| + case SQLITE_CANTOPEN: zVal = "SQLITE_CANTOPEN"; break;
|
| + case SQLITE_PROTOCOL: zVal = "SQLITE_PROTOCOL"; break;
|
| + case SQLITE_EMPTY: zVal = "SQLITE_EMPTY"; break;
|
| + case SQLITE_SCHEMA: zVal = "SQLITE_SCHEMA"; break;
|
| + case SQLITE_CONSTRAINT: zVal = "SQLITE_CONSTRAINT"; break;
|
| + case SQLITE_MISMATCH: zVal = "SQLITE_MISMATCH"; break;
|
| + case SQLITE_MISUSE: zVal = "SQLITE_MISUSE"; break;
|
| + case SQLITE_NOLFS: zVal = "SQLITE_NOLFS"; break;
|
| + case SQLITE_IOERR_READ: zVal = "SQLITE_IOERR_READ"; break;
|
| + case SQLITE_IOERR_SHORT_READ: zVal = "SQLITE_IOERR_SHORT_READ"; break;
|
| + case SQLITE_IOERR_WRITE: zVal = "SQLITE_IOERR_WRITE"; break;
|
| + case SQLITE_IOERR_FSYNC: zVal = "SQLITE_IOERR_FSYNC"; break;
|
| + case SQLITE_IOERR_DIR_FSYNC: zVal = "SQLITE_IOERR_DIR_FSYNC"; break;
|
| + case SQLITE_IOERR_TRUNCATE: zVal = "SQLITE_IOERR_TRUNCATE"; break;
|
| + case SQLITE_IOERR_FSTAT: zVal = "SQLITE_IOERR_FSTAT"; break;
|
| + case SQLITE_IOERR_UNLOCK: zVal = "SQLITE_IOERR_UNLOCK"; break;
|
| + case SQLITE_IOERR_RDLOCK: zVal = "SQLITE_IOERR_RDLOCK"; break;
|
| + case SQLITE_IOERR_DELETE: zVal = "SQLITE_IOERR_DELETE"; break;
|
| + case SQLITE_IOERR_BLOCKED: zVal = "SQLITE_IOERR_BLOCKED"; break;
|
| + case SQLITE_IOERR_NOMEM: zVal = "SQLITE_IOERR_NOMEM"; break;
|
| + case SQLITE_IOERR_ACCESS: zVal = "SQLITE_IOERR_ACCESS"; break;
|
| + case SQLITE_IOERR_CHECKRESERVEDLOCK:
|
| + zVal = "SQLITE_IOERR_CHECKRESERVEDLOCK"; break;
|
| + case SQLITE_IOERR_LOCK: zVal = "SQLITE_IOERR_LOCK"; break;
|
| + case SQLITE_IOERR_CLOSE: zVal = "SQLITE_IOERR_CLOSE"; break;
|
| + case SQLITE_IOERR_DIR_CLOSE: zVal = "SQLITE_IOERR_DIR_CLOSE"; break;
|
| + case SQLITE_IOERR_SHMOPEN: zVal = "SQLITE_IOERR_SHMOPEN"; break;
|
| + case SQLITE_IOERR_SHMSIZE: zVal = "SQLITE_IOERR_SHMSIZE"; break;
|
| + case SQLITE_IOERR_SHMLOCK: zVal = "SQLITE_IOERR_SHMLOCK"; break;
|
| + case SQLITE_LOCKED_SHAREDCACHE: zVal = "SQLITE_LOCKED_SHAREDCACHE"; break;
|
| + case SQLITE_BUSY_RECOVERY: zVal = "SQLITE_BUSY_RECOVERY"; break;
|
| + case SQLITE_CANTOPEN_NOTEMPDIR: zVal = "SQLITE_CANTOPEN_NOTEMPDIR"; break;
|
| + default: {
|
| + sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", rc);
|
| + zVal = zBuf;
|
| + break;
|
| + }
|
| + }
|
| + vfstrace_printf(pInfo, zFormat, zVal);
|
| +}
|
| +
|
| +/*
|
| +** Append to a buffer.
|
| +*/
|
| +static void strappend(char *z, int *pI, const char *zAppend){
|
| + int i = *pI;
|
| + while( zAppend[0] ){ z[i++] = *(zAppend++); }
|
| + z[i] = 0;
|
| + *pI = i;
|
| +}
|
| +
|
| +/*
|
| +** Close an vfstrace-file.
|
| +*/
|
| +static int vfstraceClose(sqlite3_file *pFile){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xClose(%s)", pInfo->zVfsName, p->zFName);
|
| + rc = p->pReal->pMethods->xClose(p->pReal);
|
| + vfstrace_print_errcode(pInfo, " -> %s\n", rc);
|
| + if( rc==SQLITE_OK ){
|
| + sqlite3_free((void*)p->base.pMethods);
|
| + p->base.pMethods = 0;
|
| + }
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Read data from an vfstrace-file.
|
| +*/
|
| +static int vfstraceRead(
|
| + sqlite3_file *pFile,
|
| + void *zBuf,
|
| + int iAmt,
|
| + sqlite_int64 iOfst
|
| +){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xRead(%s,n=%d,ofst=%lld)",
|
| + pInfo->zVfsName, p->zFName, iAmt, iOfst);
|
| + rc = p->pReal->pMethods->xRead(p->pReal, zBuf, iAmt, iOfst);
|
| + vfstrace_print_errcode(pInfo, " -> %s\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Write data to an vfstrace-file.
|
| +*/
|
| +static int vfstraceWrite(
|
| + sqlite3_file *pFile,
|
| + const void *zBuf,
|
| + int iAmt,
|
| + sqlite_int64 iOfst
|
| +){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xWrite(%s,n=%d,ofst=%lld)",
|
| + pInfo->zVfsName, p->zFName, iAmt, iOfst);
|
| + rc = p->pReal->pMethods->xWrite(p->pReal, zBuf, iAmt, iOfst);
|
| + vfstrace_print_errcode(pInfo, " -> %s\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Truncate an vfstrace-file.
|
| +*/
|
| +static int vfstraceTruncate(sqlite3_file *pFile, sqlite_int64 size){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xTruncate(%s,%lld)", pInfo->zVfsName, p->zFName,
|
| + size);
|
| + rc = p->pReal->pMethods->xTruncate(p->pReal, size);
|
| + vfstrace_printf(pInfo, " -> %d\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Sync an vfstrace-file.
|
| +*/
|
| +static int vfstraceSync(sqlite3_file *pFile, int flags){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + int i;
|
| + char zBuf[100];
|
| + memcpy(zBuf, "|0", 3);
|
| + i = 0;
|
| + if( flags & SQLITE_SYNC_FULL ) strappend(zBuf, &i, "|FULL");
|
| + else if( flags & SQLITE_SYNC_NORMAL ) strappend(zBuf, &i, "|NORMAL");
|
| + if( flags & SQLITE_SYNC_DATAONLY ) strappend(zBuf, &i, "|DATAONLY");
|
| + if( flags & ~(SQLITE_SYNC_FULL|SQLITE_SYNC_DATAONLY) ){
|
| + sqlite3_snprintf(sizeof(zBuf)-i, &zBuf[i], "|0x%x", flags);
|
| + }
|
| + vfstrace_printf(pInfo, "%s.xSync(%s,%s)", pInfo->zVfsName, p->zFName,
|
| + &zBuf[1]);
|
| + rc = p->pReal->pMethods->xSync(p->pReal, flags);
|
| + vfstrace_printf(pInfo, " -> %d\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Return the current file-size of an vfstrace-file.
|
| +*/
|
| +static int vfstraceFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xFileSize(%s)", pInfo->zVfsName, p->zFName);
|
| + rc = p->pReal->pMethods->xFileSize(p->pReal, pSize);
|
| + vfstrace_print_errcode(pInfo, " -> %s,", rc);
|
| + vfstrace_printf(pInfo, " size=%lld\n", *pSize);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Return the name of a lock.
|
| +*/
|
| +static const char *lockName(int eLock){
|
| + const char *azLockNames[] = {
|
| + "NONE", "SHARED", "RESERVED", "PENDING", "EXCLUSIVE"
|
| + };
|
| + if( eLock<0 || eLock>=sizeof(azLockNames)/sizeof(azLockNames[0]) ){
|
| + return "???";
|
| + }else{
|
| + return azLockNames[eLock];
|
| + }
|
| +}
|
| +
|
| +/*
|
| +** Lock an vfstrace-file.
|
| +*/
|
| +static int vfstraceLock(sqlite3_file *pFile, int eLock){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xLock(%s,%s)", pInfo->zVfsName, p->zFName,
|
| + lockName(eLock));
|
| + rc = p->pReal->pMethods->xLock(p->pReal, eLock);
|
| + vfstrace_print_errcode(pInfo, " -> %s\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Unlock an vfstrace-file.
|
| +*/
|
| +static int vfstraceUnlock(sqlite3_file *pFile, int eLock){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xUnlock(%s,%s)", pInfo->zVfsName, p->zFName,
|
| + lockName(eLock));
|
| + rc = p->pReal->pMethods->xUnlock(p->pReal, eLock);
|
| + vfstrace_print_errcode(pInfo, " -> %s\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Check if another file-handle holds a RESERVED lock on an vfstrace-file.
|
| +*/
|
| +static int vfstraceCheckReservedLock(sqlite3_file *pFile, int *pResOut){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xCheckReservedLock(%s,%d)",
|
| + pInfo->zVfsName, p->zFName);
|
| + rc = p->pReal->pMethods->xCheckReservedLock(p->pReal, pResOut);
|
| + vfstrace_print_errcode(pInfo, " -> %s", rc);
|
| + vfstrace_printf(pInfo, ", out=%d\n", *pResOut);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** File control method. For custom operations on an vfstrace-file.
|
| +*/
|
| +static int vfstraceFileControl(sqlite3_file *pFile, int op, void *pArg){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + char zBuf[100];
|
| + char *zOp;
|
| + switch( op ){
|
| + case SQLITE_FCNTL_LOCKSTATE: zOp = "LOCKSTATE"; break;
|
| + case SQLITE_GET_LOCKPROXYFILE: zOp = "GET_LOCKPROXYFILE"; break;
|
| + case SQLITE_SET_LOCKPROXYFILE: zOp = "SET_LOCKPROXYFILE"; break;
|
| + case SQLITE_LAST_ERRNO: zOp = "LAST_ERRNO"; break;
|
| + case SQLITE_FCNTL_SIZE_HINT: {
|
| + sqlite3_snprintf(sizeof(zBuf), zBuf, "SIZE_HINT,%lld",
|
| + *(sqlite3_int64*)pArg);
|
| + zOp = zBuf;
|
| + break;
|
| + }
|
| + case SQLITE_FCNTL_CHUNK_SIZE: {
|
| + sqlite3_snprintf(sizeof(zBuf), zBuf, "CHUNK_SIZE,%d", *(int*)pArg);
|
| + zOp = zBuf;
|
| + break;
|
| + }
|
| + case SQLITE_FCNTL_FILE_POINTER: zOp = "FILE_POINTER"; break;
|
| + case SQLITE_FCNTL_SYNC_OMITTED: zOp = "SYNC_OMITTED"; break;
|
| + case 0xca093fa0: zOp = "DB_UNCHANGED"; break;
|
| + default: {
|
| + sqlite3_snprintf(sizeof zBuf, zBuf, "%d", op);
|
| + zOp = zBuf;
|
| + break;
|
| + }
|
| + }
|
| + vfstrace_printf(pInfo, "%s.xFileControl(%s,%s)",
|
| + pInfo->zVfsName, p->zFName, zOp);
|
| + rc = p->pReal->pMethods->xFileControl(p->pReal, op, pArg);
|
| + vfstrace_print_errcode(pInfo, " -> %s\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Return the sector-size in bytes for an vfstrace-file.
|
| +*/
|
| +static int vfstraceSectorSize(sqlite3_file *pFile){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xSectorSize(%s)", pInfo->zVfsName, p->zFName);
|
| + rc = p->pReal->pMethods->xSectorSize(p->pReal);
|
| + vfstrace_printf(pInfo, " -> %d\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Return the device characteristic flags supported by an vfstrace-file.
|
| +*/
|
| +static int vfstraceDeviceCharacteristics(sqlite3_file *pFile){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xDeviceCharacteristics(%s)",
|
| + pInfo->zVfsName, p->zFName);
|
| + rc = p->pReal->pMethods->xDeviceCharacteristics(p->pReal);
|
| + vfstrace_printf(pInfo, " -> 0x%08x\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Shared-memory operations.
|
| +*/
|
| +static int vfstraceShmLock(sqlite3_file *pFile, int ofst, int n, int flags){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + char zLck[100];
|
| + int i = 0;
|
| + memcpy(zLck, "|0", 3);
|
| + if( flags & SQLITE_SHM_UNLOCK ) strappend(zLck, &i, "|UNLOCK");
|
| + if( flags & SQLITE_SHM_LOCK ) strappend(zLck, &i, "|LOCK");
|
| + if( flags & SQLITE_SHM_SHARED ) strappend(zLck, &i, "|SHARED");
|
| + if( flags & SQLITE_SHM_EXCLUSIVE ) strappend(zLck, &i, "|EXCLUSIVE");
|
| + if( flags & ~(0xf) ){
|
| + sqlite3_snprintf(sizeof(zLck)-i, &zLck[i], "|0x%x", flags);
|
| + }
|
| + vfstrace_printf(pInfo, "%s.xShmLock(%s,ofst=%d,n=%d,%s)",
|
| + pInfo->zVfsName, p->zFName, ofst, n, &zLck[1]);
|
| + rc = p->pReal->pMethods->xShmLock(p->pReal, ofst, n, flags);
|
| + vfstrace_print_errcode(pInfo, " -> %s\n", rc);
|
| + return rc;
|
| +}
|
| +static int vfstraceShmMap(
|
| + sqlite3_file *pFile,
|
| + int iRegion,
|
| + int szRegion,
|
| + int isWrite,
|
| + void volatile **pp
|
| +){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xShmMap(%s,iRegion=%d,szRegion=%d,isWrite=%d,*)",
|
| + pInfo->zVfsName, p->zFName, iRegion, szRegion, isWrite);
|
| + rc = p->pReal->pMethods->xShmMap(p->pReal, iRegion, szRegion, isWrite, pp);
|
| + vfstrace_print_errcode(pInfo, " -> %s\n", rc);
|
| + return rc;
|
| +}
|
| +static void vfstraceShmBarrier(sqlite3_file *pFile){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + vfstrace_printf(pInfo, "%s.xShmBarrier(%s)\n", pInfo->zVfsName, p->zFName);
|
| + p->pReal->pMethods->xShmBarrier(p->pReal);
|
| +}
|
| +static int vfstraceShmUnmap(sqlite3_file *pFile, int delFlag){
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = p->pInfo;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xShmUnmap(%s,delFlag=%d)",
|
| + pInfo->zVfsName, p->zFName, delFlag);
|
| + rc = p->pReal->pMethods->xShmUnmap(p->pReal, delFlag);
|
| + vfstrace_print_errcode(pInfo, " -> %s\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +
|
| +
|
| +/*
|
| +** Open an vfstrace file handle.
|
| +*/
|
| +static int vfstraceOpen(
|
| + sqlite3_vfs *pVfs,
|
| + const char *zName,
|
| + sqlite3_file *pFile,
|
| + int flags,
|
| + int *pOutFlags
|
| +){
|
| + int rc;
|
| + vfstrace_file *p = (vfstrace_file *)pFile;
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + p->pInfo = pInfo;
|
| + p->zFName = zName ? fileTail(zName) : "<temp>";
|
| + p->pReal = (sqlite3_file *)&p[1];
|
| + rc = pRoot->xOpen(pRoot, zName, p->pReal, flags, pOutFlags);
|
| + vfstrace_printf(pInfo, "%s.xOpen(%s,flags=0x%x)",
|
| + pInfo->zVfsName, p->zFName, flags);
|
| + if( p->pReal->pMethods ){
|
| + sqlite3_io_methods *pNew = sqlite3_malloc( sizeof(*pNew) );
|
| + const sqlite3_io_methods *pSub = p->pReal->pMethods;
|
| + memset(pNew, 0, sizeof(*pNew));
|
| + pNew->iVersion = pSub->iVersion;
|
| + pNew->xClose = vfstraceClose;
|
| + pNew->xRead = vfstraceRead;
|
| + pNew->xWrite = vfstraceWrite;
|
| + pNew->xTruncate = vfstraceTruncate;
|
| + pNew->xSync = vfstraceSync;
|
| + pNew->xFileSize = vfstraceFileSize;
|
| + pNew->xLock = vfstraceLock;
|
| + pNew->xUnlock = vfstraceUnlock;
|
| + pNew->xCheckReservedLock = vfstraceCheckReservedLock;
|
| + pNew->xFileControl = vfstraceFileControl;
|
| + pNew->xSectorSize = vfstraceSectorSize;
|
| + pNew->xDeviceCharacteristics = vfstraceDeviceCharacteristics;
|
| + if( pNew->iVersion>=2 ){
|
| + pNew->xShmMap = pSub->xShmMap ? vfstraceShmMap : 0;
|
| + pNew->xShmLock = pSub->xShmLock ? vfstraceShmLock : 0;
|
| + pNew->xShmBarrier = pSub->xShmBarrier ? vfstraceShmBarrier : 0;
|
| + pNew->xShmUnmap = pSub->xShmUnmap ? vfstraceShmUnmap : 0;
|
| + }
|
| + pFile->pMethods = pNew;
|
| + }
|
| + vfstrace_print_errcode(pInfo, " -> %s", rc);
|
| + if( pOutFlags ){
|
| + vfstrace_printf(pInfo, ", outFlags=0x%x\n", *pOutFlags);
|
| + }else{
|
| + vfstrace_printf(pInfo, "\n");
|
| + }
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Delete the file located at zPath. If the dirSync argument is true,
|
| +** ensure the file-system modifications are synced to disk before
|
| +** returning.
|
| +*/
|
| +static int vfstraceDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xDelete(\"%s\",%d)",
|
| + pInfo->zVfsName, zPath, dirSync);
|
| + rc = pRoot->xDelete(pRoot, zPath, dirSync);
|
| + vfstrace_print_errcode(pInfo, " -> %s\n", rc);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Test for access permissions. Return true if the requested permission
|
| +** is available, or false otherwise.
|
| +*/
|
| +static int vfstraceAccess(
|
| + sqlite3_vfs *pVfs,
|
| + const char *zPath,
|
| + int flags,
|
| + int *pResOut
|
| +){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xDelete(\"%s\",%d)",
|
| + pInfo->zVfsName, zPath, flags);
|
| + rc = pRoot->xAccess(pRoot, zPath, flags, pResOut);
|
| + vfstrace_print_errcode(pInfo, " -> %s", rc);
|
| + vfstrace_printf(pInfo, ", out=%d\n", *pResOut);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Populate buffer zOut with the full canonical pathname corresponding
|
| +** to the pathname in zPath. zOut is guaranteed to point to a buffer
|
| +** of at least (DEVSYM_MAX_PATHNAME+1) bytes.
|
| +*/
|
| +static int vfstraceFullPathname(
|
| + sqlite3_vfs *pVfs,
|
| + const char *zPath,
|
| + int nOut,
|
| + char *zOut
|
| +){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + int rc;
|
| + vfstrace_printf(pInfo, "%s.xFullPathname(\"%s\")",
|
| + pInfo->zVfsName, zPath);
|
| + rc = pRoot->xFullPathname(pRoot, zPath, nOut, zOut);
|
| + vfstrace_print_errcode(pInfo, " -> %s", rc);
|
| + vfstrace_printf(pInfo, ", out=\"%.*s\"\n", nOut, zOut);
|
| + return rc;
|
| +}
|
| +
|
| +/*
|
| +** Open the dynamic library located at zPath and return a handle.
|
| +*/
|
| +static void *vfstraceDlOpen(sqlite3_vfs *pVfs, const char *zPath){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + vfstrace_printf(pInfo, "%s.xDlOpen(\"%s\")\n", pInfo->zVfsName, zPath);
|
| + return pRoot->xDlOpen(pRoot, zPath);
|
| +}
|
| +
|
| +/*
|
| +** Populate the buffer zErrMsg (size nByte bytes) with a human readable
|
| +** utf-8 string describing the most recent error encountered associated
|
| +** with dynamic libraries.
|
| +*/
|
| +static void vfstraceDlError(sqlite3_vfs *pVfs, int nByte, char *zErrMsg){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + vfstrace_printf(pInfo, "%s.xDlError(%d)", pInfo->zVfsName, nByte);
|
| + pRoot->xDlError(pRoot, nByte, zErrMsg);
|
| + vfstrace_printf(pInfo, " -> \"%s\"", zErrMsg);
|
| +}
|
| +
|
| +/*
|
| +** Return a pointer to the symbol zSymbol in the dynamic library pHandle.
|
| +*/
|
| +static void (*vfstraceDlSym(sqlite3_vfs *pVfs,void *p,const char *zSym))(void){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + vfstrace_printf(pInfo, "%s.xDlSym(\"%s\")\n", pInfo->zVfsName, zSym);
|
| + return pRoot->xDlSym(pRoot, p, zSym);
|
| +}
|
| +
|
| +/*
|
| +** Close the dynamic library handle pHandle.
|
| +*/
|
| +static void vfstraceDlClose(sqlite3_vfs *pVfs, void *pHandle){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + vfstrace_printf(pInfo, "%s.xDlOpen()\n", pInfo->zVfsName);
|
| + pRoot->xDlClose(pRoot, pHandle);
|
| +}
|
| +
|
| +/*
|
| +** Populate the buffer pointed to by zBufOut with nByte bytes of
|
| +** random data.
|
| +*/
|
| +static int vfstraceRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + vfstrace_printf(pInfo, "%s.xRandomness(%d)\n", pInfo->zVfsName, nByte);
|
| + return pRoot->xRandomness(pRoot, nByte, zBufOut);
|
| +}
|
| +
|
| +/*
|
| +** Sleep for nMicro microseconds. Return the number of microseconds
|
| +** actually slept.
|
| +*/
|
| +static int vfstraceSleep(sqlite3_vfs *pVfs, int nMicro){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + return pRoot->xSleep(pRoot, nMicro);
|
| +}
|
| +
|
| +/*
|
| +** Return the current time as a Julian Day number in *pTimeOut.
|
| +*/
|
| +static int vfstraceCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + return pRoot->xCurrentTime(pRoot, pTimeOut);
|
| +}
|
| +static int vfstraceCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *pTimeOut){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + return pRoot->xCurrentTimeInt64(pRoot, pTimeOut);
|
| +}
|
| +
|
| +/*
|
| +** Return th3 emost recent error code and message
|
| +*/
|
| +static int vfstraceGetLastError(sqlite3_vfs *pVfs, int iErr, char *zErr){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + return pRoot->xGetLastError(pRoot, iErr, zErr);
|
| +}
|
| +
|
| +/*
|
| +** Override system calls.
|
| +*/
|
| +static int vfstraceSetSystemCall(
|
| + sqlite3_vfs *pVfs,
|
| + const char *zName,
|
| + sqlite3_syscall_ptr pFunc
|
| +){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + return pRoot->xSetSystemCall(pRoot, zName, pFunc);
|
| +}
|
| +static sqlite3_syscall_ptr vfstraceGetSystemCall(
|
| + sqlite3_vfs *pVfs,
|
| + const char *zName
|
| +){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + return pRoot->xGetSystemCall(pRoot, zName);
|
| +}
|
| +static const char *vfstraceNextSystemCall(sqlite3_vfs *pVfs, const char *zName){
|
| + vfstrace_info *pInfo = (vfstrace_info*)pVfs->pAppData;
|
| + sqlite3_vfs *pRoot = pInfo->pRootVfs;
|
| + return pRoot->xNextSystemCall(pRoot, zName);
|
| +}
|
| +
|
| +
|
| +/*
|
| +** Clients invoke this routine to construct a new trace-vfs shim.
|
| +**
|
| +** Return SQLITE_OK on success.
|
| +**
|
| +** SQLITE_NOMEM is returned in the case of a memory allocation error.
|
| +** SQLITE_NOTFOUND is returned if zOldVfsName does not exist.
|
| +*/
|
| +int vfstrace_register(
|
| + const char *zTraceName, /* Name of the newly constructed VFS */
|
| + const char *zOldVfsName, /* Name of the underlying VFS */
|
| + int (*xOut)(const char*,void*), /* Output routine. ex: fputs */
|
| + void *pOutArg, /* 2nd argument to xOut. ex: stderr */
|
| + int makeDefault /* True to make the new VFS the default */
|
| +){
|
| + sqlite3_vfs *pNew;
|
| + sqlite3_vfs *pRoot;
|
| + vfstrace_info *pInfo;
|
| + int nName;
|
| + int nByte;
|
| +
|
| + pRoot = sqlite3_vfs_find(zOldVfsName);
|
| + if( pRoot==0 ) return SQLITE_NOTFOUND;
|
| + nName = strlen(zTraceName);
|
| + nByte = sizeof(*pNew) + sizeof(*pInfo) + nName + 1;
|
| + pNew = sqlite3_malloc( nByte );
|
| + if( pNew==0 ) return SQLITE_NOMEM;
|
| + memset(pNew, 0, nByte);
|
| + pInfo = (vfstrace_info*)&pNew[1];
|
| + pNew->iVersion = pRoot->iVersion;
|
| + pNew->szOsFile = pRoot->szOsFile + sizeof(vfstrace_file);
|
| + pNew->mxPathname = pRoot->mxPathname;
|
| + pNew->zName = (char*)&pInfo[1];
|
| + memcpy((char*)&pInfo[1], zTraceName, nName+1);
|
| + pNew->pAppData = pInfo;
|
| + pNew->xOpen = vfstraceOpen;
|
| + pNew->xDelete = vfstraceDelete;
|
| + pNew->xAccess = vfstraceAccess;
|
| + pNew->xFullPathname = vfstraceFullPathname;
|
| + pNew->xDlOpen = pRoot->xDlOpen==0 ? 0 : vfstraceDlOpen;
|
| + pNew->xDlError = pRoot->xDlError==0 ? 0 : vfstraceDlError;
|
| + pNew->xDlSym = pRoot->xDlSym==0 ? 0 : vfstraceDlSym;
|
| + pNew->xDlClose = pRoot->xDlClose==0 ? 0 : vfstraceDlClose;
|
| + pNew->xRandomness = vfstraceRandomness;
|
| + pNew->xSleep = vfstraceSleep;
|
| + pNew->xCurrentTime = vfstraceCurrentTime;
|
| + pNew->xGetLastError = pRoot->xGetLastError==0 ? 0 : vfstraceGetLastError;
|
| + if( pNew->iVersion>=2 ){
|
| + pNew->xCurrentTimeInt64 = pRoot->xCurrentTimeInt64==0 ? 0 :
|
| + vfstraceCurrentTimeInt64;
|
| + if( pNew->iVersion>=3 ){
|
| + pNew->xSetSystemCall = pRoot->xSetSystemCall==0 ? 0 :
|
| + vfstraceSetSystemCall;
|
| + pNew->xGetSystemCall = pRoot->xGetSystemCall==0 ? 0 :
|
| + vfstraceGetSystemCall;
|
| + pNew->xNextSystemCall = pRoot->xNextSystemCall==0 ? 0 :
|
| + vfstraceNextSystemCall;
|
| + }
|
| + }
|
| + pInfo->pRootVfs = pRoot;
|
| + pInfo->xOut = xOut;
|
| + pInfo->pOutArg = pOutArg;
|
| + pInfo->zVfsName = pNew->zName;
|
| + pInfo->pTraceVfs = pNew;
|
| + vfstrace_printf(pInfo, "%s.enabled_for(\"%s\")\n",
|
| + pInfo->zVfsName, pRoot->zName);
|
| + return sqlite3_vfs_register(pNew, makeDefault);
|
| +}
|
|
|
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