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Revise the implementation of OP_Once so that it is smaller, faster, and uses

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less memory.  This also fixes an obscure bug introduced 3 days ago by check-in
[5990a1bdb4a073].

FossilOrigin-Name: 6bf5ba10d28f1b0a32aa9a560ae3143a1235eadb
This commit is contained in:
drh
2016-09-18 16:08:10 +00:00
parent 598f7c59e1
commit 9e5eb9c8cc
12 changed files with 53 additions and 56 deletions
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src/sqliteInt.h
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@@ -2896,7 +2896,6 @@ struct Parse {
int nTab; /* Number of previously allocated VDBE cursors */
int nMem; /* Number of memory cells used so far */
int nSet; /* Number of sets used so far */
int nOnce; /* Number of OP_Once instructions so far */
int nOpAlloc; /* Number of slots allocated for Vdbe.aOp[] */
int szOpAlloc; /* Bytes of memory space allocated for Vdbe.aOp[] */
int iFixedOp; /* Never back out opcodes iFixedOp-1 or earlier */
@@ -3230,6 +3229,7 @@ struct Sqlite3Config {
int (*xTestCallback)(int); /* Invoked by sqlite3FaultSim() */
#endif
int bLocaltimeFault; /* True to fail localtime() calls */
int iOnceResetThreshold; /* When to reset OP_Once counters */
};
/*