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Overview
| Comment: | Rename vdbeIncrMergerInit() to vdbeMergeEngineInit() - a much more accurate name. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | threads |
| Files: | files | file ages | folders |
| SHA1: |
5b084a2dd581141b2d0cd9d1a5975625 |
| User & Date: | drh 2014-07-28 19:58:41 |
Context
|
2014-07-28
| ||
| 20:16 | Remove an unnecessary parameter from vdbeMergeEngineStep(). Rename a couple other routines to be more descriptive of what they do. check-in: f2407a40 user: drh tags: threads | |
| 19:58 | Rename vdbeIncrMergerInit() to vdbeMergeEngineInit() - a much more accurate name. check-in: 5b084a2d user: drh tags: threads | |
| 18:57 | In vdbesort.c, rename vdbeSorterDoCompare() to vdbeMergeEngineCompare() and move it closer to the one place where it is called. Other minor comment changes. check-in: 09d50d9f user: drh tags: threads | |
Changes
Changes to src/vdbesort.c.
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}
}
pMerger->aTree[iOut] = iRes;
}
/*
** Allowed values for the eMode parameter to vdbeIncrMergerInit()
** and vdbePmaReaderIncrMergeInit().
*/
#define INCRINIT_NORMAL 0
#define INCRINIT_TASK 1
#define INCRINIT_ROOT 2
/* Forward reference.
................................................................................
**
** Otherwise, if eMode is any value other than INCRINIT_ROOT, then use
** vdbePmaReaderIncrMergeInit() to initialize each PmaReader that feeds data
** to pMerger.
**
** SQLITE_OK is returned if successful, or an SQLite error code otherwise.
*/
static int vdbeIncrMergerInit(
SortSubtask *pTask, /* Thread that will run pMerger */
MergeEngine *pMerger, /* MergeEngine to initialize */
int eMode /* One of the INCRINIT_XXX constants */
){
int rc = SQLITE_OK; /* Return code */
int i; /* For looping over PmaReader objects */
int nTree = pMerger->nTree;
................................................................................
static int vdbePmaReaderIncrMergeInit(PmaReader *pReadr, int eMode){
int rc = SQLITE_OK;
IncrMerger *pIncr = pReadr->pIncr;
if( pIncr ){
SortSubtask *pTask = pIncr->pTask;
sqlite3 *db = pTask->pSorter->db;
rc = vdbeIncrMergerInit(pTask, pIncr->pMerger, eMode);
/* Set up the required files for pIncr. A multi-theaded IncrMerge object
** requires two temp files to itself, whereas a single-threaded object
** only requires a region of pTask->file2. */
if( rc==SQLITE_OK ){
int mxSz = pIncr->mxSz;
#if SQLITE_MAX_WORKER_THREADS>0
................................................................................
}
if( rc==SQLITE_OK ){
rc = vdbePmaReaderIncrMergeInit(pReadr, INCRINIT_ROOT);
}
}else
#endif
{
rc = vdbeIncrMergerInit(pTask0, pMain, INCRINIT_NORMAL);
pSorter->pMerger = pMain;
pMain = 0;
}
}
if( rc!=SQLITE_OK ){
vdbeMergeEngineFree(pMain);
|
| | | | |
1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 .... 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 .... 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 .... 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 |
}
}
pMerger->aTree[iOut] = iRes;
}
/*
** Allowed values for the eMode parameter to vdbeMergeEngineInit()
** and vdbePmaReaderIncrMergeInit().
*/
#define INCRINIT_NORMAL 0
#define INCRINIT_TASK 1
#define INCRINIT_ROOT 2
/* Forward reference.
................................................................................
**
** Otherwise, if eMode is any value other than INCRINIT_ROOT, then use
** vdbePmaReaderIncrMergeInit() to initialize each PmaReader that feeds data
** to pMerger.
**
** SQLITE_OK is returned if successful, or an SQLite error code otherwise.
*/
static int vdbeMergeEngineInit(
SortSubtask *pTask, /* Thread that will run pMerger */
MergeEngine *pMerger, /* MergeEngine to initialize */
int eMode /* One of the INCRINIT_XXX constants */
){
int rc = SQLITE_OK; /* Return code */
int i; /* For looping over PmaReader objects */
int nTree = pMerger->nTree;
................................................................................
static int vdbePmaReaderIncrMergeInit(PmaReader *pReadr, int eMode){
int rc = SQLITE_OK;
IncrMerger *pIncr = pReadr->pIncr;
if( pIncr ){
SortSubtask *pTask = pIncr->pTask;
sqlite3 *db = pTask->pSorter->db;
rc = vdbeMergeEngineInit(pTask, pIncr->pMerger, eMode);
/* Set up the required files for pIncr. A multi-theaded IncrMerge object
** requires two temp files to itself, whereas a single-threaded object
** only requires a region of pTask->file2. */
if( rc==SQLITE_OK ){
int mxSz = pIncr->mxSz;
#if SQLITE_MAX_WORKER_THREADS>0
................................................................................
}
if( rc==SQLITE_OK ){
rc = vdbePmaReaderIncrMergeInit(pReadr, INCRINIT_ROOT);
}
}else
#endif
{
rc = vdbeMergeEngineInit(pTask0, pMain, INCRINIT_NORMAL);
pSorter->pMerger = pMain;
pMain = 0;
}
}
if( rc!=SQLITE_OK ){
vdbeMergeEngineFree(pMain);
|