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Add tests for some lock-contention cases.

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FossilOrigin-Name: f0fcb9c9a67e2bf7bbedbedbc27791b605a21dd1
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dan
2010-05-06 12:15:48 +00:00
parent e404de05c0
commit ff6dfc73fe
5 changed files with 83 additions and 20 deletions
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src/wal.c
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@@ -219,6 +219,7 @@ static void walChecksumBytes(u8 *aByte, int nByte, u32 *aCksum){
static int walSetLock(Wal *pWal, int desiredStatus){
int rc, got;
if( pWal->lockState==desiredStatus ) return SQLITE_OK;
got = pWal->lockState;
rc = pWal->pVfs->xShmLock(pWal->pVfs, pWal->pWIndex, desiredStatus, &got);
pWal->lockState = got;
if( got==SQLITE_SHM_READ_FULL || got==SQLITE_SHM_READ ){