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Comment:Add xShmXXX() methods to the test VFS in test_devsym.test.
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SHA1: 1d20342424b452ea96aaf161de1f98f26a9155a0
User & Date: dan 2010-04-30 16:19:40
Context
2010-04-30
16:24
Reapply commits [837d82a929] and [c05e7dca17] that were accidentally overwritten. (check-in: 598de527 user: dan tags: wal)
16:19
Add xShmXXX() methods to the test VFS in test_devsym.test. (check-in: 1d203424 user: dan tags: wal)
16:12
Correctly record the fact that the SHM lock reached PENDING if it did so but failed to reach CHECKPOINT. (check-in: d9250e84 user: drh tags: wal)
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Changes to src/test_devsym.c. 

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static void (*devsymDlSym(sqlite3_vfs*,void*, const char *zSymbol))(void);
static void devsymDlClose(sqlite3_vfs*, void*);
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
static int devsymRandomness(sqlite3_vfs*, int nByte, char *zOut);
static int devsymSleep(sqlite3_vfs*, int microseconds);
static int devsymCurrentTime(sqlite3_vfs*, double*);









static sqlite3_vfs devsym_vfs = {
  1,                     /* iVersion */
  sizeof(devsym_file),      /* szOsFile */
  DEVSYM_MAX_PATHNAME,      /* mxPathname */
  0,                     /* pNext */
  DEVSYM_VFS_NAME,          /* zName */
  0,                     /* pAppData */
  devsymOpen,               /* xOpen */
  devsymDelete,             /* xDelete */
................................................................................
  0,                        /* xDlError */
  0,                        /* xDlSym */
  0,                        /* xDlClose */
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
  devsymRandomness,         /* xRandomness */
  devsymSleep,              /* xSleep */
  devsymCurrentTime,        /* xCurrentTime */












};

static sqlite3_io_methods devsym_io_methods = {
  1,                            /* iVersion */
  devsymClose,                      /* xClose */
  devsymRead,                       /* xRead */
  devsymWrite,                      /* xWrite */
................................................................................
/*
** Return the current time as a Julian Day number in *pTimeOut.
*/
static int devsymCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){
  return sqlite3OsCurrentTime(g.pVfs, pTimeOut);
}

































/*
** This procedure registers the devsym vfs with SQLite. If the argument is
** true, the devsym vfs becomes the new default vfs. It is the only publicly
** available function in this file.
*/
void devsym_register(int iDeviceChar, int iSectorSize){
  if( g.pVfs==0 ){
    g.pVfs = sqlite3_vfs_find(0);
    devsym_vfs.szOsFile += g.pVfs->szOsFile;







    sqlite3_vfs_register(&devsym_vfs, 0);
  }
  if( iDeviceChar>=0 ){
    g.iDeviceChar = iDeviceChar;
  }else{
    g.iDeviceChar = 0;
  }








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static void (*devsymDlSym(sqlite3_vfs*,void*, const char *zSymbol))(void);
static void devsymDlClose(sqlite3_vfs*, void*);
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
static int devsymRandomness(sqlite3_vfs*, int nByte, char *zOut);
static int devsymSleep(sqlite3_vfs*, int microseconds);
static int devsymCurrentTime(sqlite3_vfs*, double*);

static int devsymShmOpen(sqlite3_vfs *, const char *, sqlite3_shm **);
static int devsymShmSize(sqlite3_shm *, int , int *);
static int devsymShmGet(sqlite3_shm *, int , int *, void **);
static int devsymShmRelease(sqlite3_shm *);
static int devsymShmLock(sqlite3_shm *, int , int *);
static int devsymShmClose(sqlite3_shm *);
static int devsymShmDelete(sqlite3_vfs *, const char *);

static sqlite3_vfs devsym_vfs = {
  2,                     /* iVersion */
  sizeof(devsym_file),      /* szOsFile */
  DEVSYM_MAX_PATHNAME,      /* mxPathname */
  0,                     /* pNext */
  DEVSYM_VFS_NAME,          /* zName */
  0,                     /* pAppData */
  devsymOpen,               /* xOpen */
  devsymDelete,             /* xDelete */
................................................................................
  0,                        /* xDlError */
  0,                        /* xDlSym */
  0,                        /* xDlClose */
#endif /* SQLITE_OMIT_LOAD_EXTENSION */
  devsymRandomness,         /* xRandomness */
  devsymSleep,              /* xSleep */
  devsymCurrentTime,        /* xCurrentTime */
  0,                        /* xGetLastError */
  devsymShmOpen,
  devsymShmSize,
  devsymShmGet,
  devsymShmRelease,
  0,
  0,
  devsymShmLock,
  devsymShmClose,
  devsymShmDelete,
  0,
  0,
};

static sqlite3_io_methods devsym_io_methods = {
  1,                            /* iVersion */
  devsymClose,                      /* xClose */
  devsymRead,                       /* xRead */
  devsymWrite,                      /* xWrite */
................................................................................
/*
** Return the current time as a Julian Day number in *pTimeOut.
*/
static int devsymCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){
  return sqlite3OsCurrentTime(g.pVfs, pTimeOut);
}


static int devsymShmOpen(
  sqlite3_vfs *pVfs, 
  const char *zName, 
  sqlite3_shm **pp
){
  return g.pVfs->xShmOpen(g.pVfs, zName, pp);
}
static int devsymShmSize(sqlite3_shm *p, int reqSize, int *pNewSize){
  return g.pVfs->xShmSize(p, reqSize, pNewSize);
}
static int devsymShmGet(
  sqlite3_shm *p, 
  int reqMapSize, 
  int *pMapSize, 
  void **pp
){
  return g.pVfs->xShmGet(p, reqMapSize, pMapSize, pp);
}
static int devsymShmRelease(sqlite3_shm *p){
  return g.pVfs->xShmRelease(p);
}
static int devsymShmLock(sqlite3_shm *p, int desiredLock, int *gotLock){
  return g.pVfs->xShmLock(p, desiredLock, gotLock);
}
static int devsymShmClose(sqlite3_shm *p){
  return g.pVfs->xShmClose(p);
}
static int devsymShmDelete(sqlite3_vfs *pVfs, const char *zName){
  return g.pVfs->xShmDelete(g.pVfs, zName);
}

/*
** This procedure registers the devsym vfs with SQLite. If the argument is
** true, the devsym vfs becomes the new default vfs. It is the only publicly
** available function in this file.
*/
void devsym_register(int iDeviceChar, int iSectorSize){
  if( g.pVfs==0 ){
    g.pVfs = sqlite3_vfs_find(0);
    devsym_vfs.szOsFile += g.pVfs->szOsFile;
    devsym_vfs.xShmOpen = (g.pVfs->xShmOpen ? devsymShmOpen : 0);
    devsym_vfs.xShmSize = (g.pVfs->xShmSize ? devsymShmSize : 0);
    devsym_vfs.xShmGet = (g.pVfs->xShmGet ? devsymShmGet : 0);
    devsym_vfs.xShmRelease = (g.pVfs->xShmRelease ? devsymShmRelease : 0);
    devsym_vfs.xShmLock = (g.pVfs->xShmLock ? devsymShmLock : 0);
    devsym_vfs.xShmClose = (g.pVfs->xShmClose ? devsymShmClose : 0);
    devsym_vfs.xShmDelete = (g.pVfs->xShmDelete ? devsymShmDelete : 0);
    sqlite3_vfs_register(&devsym_vfs, 0);
  }
  if( iDeviceChar>=0 ){
    g.iDeviceChar = iDeviceChar;
  }else{
    g.iDeviceChar = 0;
  }

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