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Add SQLITE_LIMIT_WORKER_THREADS for controlling the maximum number of

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worker threads.

FossilOrigin-Name: 1b598c68f32db635d1cea1373bedc434aa60cf08
This commit is contained in:
drh
2014-08-29 16:20:47 +00:00
parent 503ae86508
commit 111544cbb4
7 changed files with 38 additions and 20 deletions
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8
src/main.c
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@@ -2078,6 +2078,7 @@ static const int aHardLimit[] = {
SQLITE_MAX_LIKE_PATTERN_LENGTH,
SQLITE_MAX_VARIABLE_NUMBER, /* IMP: R-38091-32352 */
SQLITE_MAX_TRIGGER_DEPTH,
SQLITE_MAX_WORKER_THREADS,
};
/*
@@ -2113,6 +2114,9 @@ static const int aHardLimit[] = {
#if SQLITE_MAX_TRIGGER_DEPTH<1
# error SQLITE_MAX_TRIGGER_DEPTH must be at least 1
#endif
#if SQLITE_MAX_WORKER_THREADS<0 || SQLITE_MAX_WORKER_THREADS>50
# error SQLITE_MAX_WORKER_THREADS must be between 0 and 50
#endif
/*
@@ -2146,7 +2150,8 @@ int sqlite3_limit(sqlite3 *db, int limitId, int newLimit){
SQLITE_MAX_LIKE_PATTERN_LENGTH );
assert( aHardLimit[SQLITE_LIMIT_VARIABLE_NUMBER]==SQLITE_MAX_VARIABLE_NUMBER);
assert( aHardLimit[SQLITE_LIMIT_TRIGGER_DEPTH]==SQLITE_MAX_TRIGGER_DEPTH );
assert( SQLITE_LIMIT_TRIGGER_DEPTH==(SQLITE_N_LIMIT-1) );
assert( aHardLimit[SQLITE_LIMIT_WORKER_THREADS]==SQLITE_MAX_WORKER_THREADS );
assert( SQLITE_LIMIT_WORKER_THREADS==(SQLITE_N_LIMIT-1) );
if( limitId<0 || limitId>=SQLITE_N_LIMIT ){
@@ -2493,6 +2498,7 @@ static int openDatabase(
assert( sizeof(db->aLimit)==sizeof(aHardLimit) );
memcpy(db->aLimit, aHardLimit, sizeof(db->aLimit));
db->aLimit[SQLITE_LIMIT_WORKER_THREADS] = 0;
db->autoCommit = 1;
db->nextAutovac = -1;
db->szMmap = sqlite3GlobalConfig.szMmap;