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Overview
| Comment: | Revise mutex handling by the sqlite3_win32_reset_heap() function. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
eacb3b7baa910e84f984b8e45695a2a2 |
| User & Date: | mistachkin 2014-12-10 17:34:48 |
Context
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2014-12-10
| ||
| 20:29 | Add new test file e_walhook.test. (check-in: 2eb6d3e4 user: dan tags: trunk) | |
| 17:34 | Revise mutex handling by the sqlite3_win32_reset_heap() function. (check-in: eacb3b7b user: mistachkin tags: trunk) | |
| 04:58 | Fix typos in the documentation for sqlite3_table_column_metadata(). No changes to code. (check-in: 3528f8dd user: drh tags: trunk) | |
Changes
Changes to src/os_win.c.
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** the sqlite3_memory_used() function does not return zero, SQLITE_BUSY will
** be returned and no changes will be made to the Win32 native heap.
*/
int sqlite3_win32_reset_heap(){
int rc;
MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */
MUTEX_LOGIC( sqlite3_mutex *pMem; ) /* The memsys static mutex */
MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
MUTEX_LOGIC( pMem = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); )
sqlite3_mutex_enter(pMaster);
sqlite3_mutex_enter(pMem);
winMemAssertMagic();
if( winMemGetHeap()!=NULL && winMemGetOwned() && sqlite3_memory_used()==0 ){
/*
** At this point, there should be no outstanding memory allocations on
** the heap. Also, since both the master and memsys locks are currently
|
| | |
1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 |
** the sqlite3_memory_used() function does not return zero, SQLITE_BUSY will
** be returned and no changes will be made to the Win32 native heap.
*/
int sqlite3_win32_reset_heap(){
int rc;
MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */
MUTEX_LOGIC( sqlite3_mutex *pMem; ) /* The memsys static mutex */
MUTEX_LOGIC( pMaster = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MASTER); )
MUTEX_LOGIC( pMem = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MEM); )
sqlite3_mutex_enter(pMaster);
sqlite3_mutex_enter(pMem);
winMemAssertMagic();
if( winMemGetHeap()!=NULL && winMemGetOwned() && sqlite3_memory_used()==0 ){
/*
** At this point, there should be no outstanding memory allocations on
** the heap. Also, since both the master and memsys locks are currently
|