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Add the sqlite3_log_hook() interface for scheduling checkpoints.

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FossilOrigin-Name: 9bda601455705475075e33bfa85687bce34b15ff
This commit is contained in:
dan
2010-04-19 18:03:51 +00:00
parent 54934f4689
commit 8d22a17411
14 changed files with 281 additions and 56 deletions
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59
src/tclsqlite.c
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@@ -123,6 +123,7 @@ struct SqliteDb {
SqlFunc *pFunc; /* List of SQL functions */
Tcl_Obj *pUpdateHook; /* Update hook script (if any) */
Tcl_Obj *pRollbackHook; /* Rollback hook script (if any) */
Tcl_Obj *pLogHook; /* WAL hook script (if any) */
Tcl_Obj *pUnlockNotify; /* Unlock notify script (if any) */
SqlCollate *pCollate; /* List of SQL collation functions */
int rc; /* Return code of most recent sqlite3_exec() */
@@ -485,6 +486,9 @@ static void DbDeleteCmd(void *db){
if( pDb->pRollbackHook ){
Tcl_DecrRefCount(pDb->pRollbackHook);
}
if( pDb->pLogHook ){
Tcl_DecrRefCount(pDb->pLogHook);
}
if( pDb->pCollateNeeded ){
Tcl_DecrRefCount(pDb->pCollateNeeded);
}
@@ -589,6 +593,32 @@ static void DbRollbackHandler(void *clientData){
}
}
static int DbLogHandler(
void *clientData,
sqlite3 *db,
const char *zDb,
int nEntry
){
int ret = 0;
Tcl_Obj *p;
SqliteDb *pDb = (SqliteDb*)clientData;
Tcl_Interp *interp = pDb->interp;
assert(pDb->pLogHook);
p = Tcl_DuplicateObj(pDb->pLogHook);
Tcl_IncrRefCount(p);
Tcl_ListObjAppendElement(interp, p, Tcl_NewStringObj(zDb, -1));
Tcl_ListObjAppendElement(interp, p, Tcl_NewIntObj(nEntry));
if( TCL_OK!=Tcl_EvalObjEx(interp, p, 0)
|| TCL_OK!=Tcl_GetIntFromObj(interp, Tcl_GetObjResult(interp), &ret)
){
Tcl_BackgroundError(interp);
}
Tcl_DecrRefCount(p);
return ret;
}
#if defined(SQLITE_TEST) && defined(SQLITE_ENABLE_UNLOCK_NOTIFY)
static void setTestUnlockNotifyVars(Tcl_Interp *interp, int iArg, int nArg){
char zBuf[64];
@@ -1540,12 +1570,12 @@ static int DbObjCmd(void *cd, Tcl_Interp *interp, int objc,Tcl_Obj *const*objv){
"complete", "copy", "enable_load_extension",
"errorcode", "eval", "exists",
"function", "incrblob", "interrupt",
"last_insert_rowid", "nullvalue", "onecolumn",
"profile", "progress", "rekey",
"restore", "rollback_hook", "status",
"timeout", "total_changes", "trace",
"transaction", "unlock_notify", "update_hook",
"version", 0
"last_insert_rowid", "log_hook", "nullvalue",
"onecolumn", "profile", "progress",
"rekey", "restore", "rollback_hook",
"status", "timeout", "total_changes",
"trace", "transaction", "unlock_notify",
"update_hook", "version", 0
};
enum DB_enum {
DB_AUTHORIZER, DB_BACKUP, DB_BUSY,
@@ -1554,12 +1584,12 @@ static int DbObjCmd(void *cd, Tcl_Interp *interp, int objc,Tcl_Obj *const*objv){
DB_COMPLETE, DB_COPY, DB_ENABLE_LOAD_EXTENSION,
DB_ERRORCODE, DB_EVAL, DB_EXISTS,
DB_FUNCTION, DB_INCRBLOB, DB_INTERRUPT,
DB_LAST_INSERT_ROWID, DB_NULLVALUE, DB_ONECOLUMN,
DB_PROFILE, DB_PROGRESS, DB_REKEY,
DB_RESTORE, DB_ROLLBACK_HOOK, DB_STATUS,
DB_TIMEOUT, DB_TOTAL_CHANGES, DB_TRACE,
DB_TRANSACTION, DB_UNLOCK_NOTIFY, DB_UPDATE_HOOK,
DB_VERSION,
DB_LAST_INSERT_ROWID, DB_LOG_HOOK, DB_NULLVALUE,
DB_ONECOLUMN, DB_PROFILE, DB_PROGRESS,
DB_REKEY, DB_RESTORE, DB_ROLLBACK_HOOK,
DB_STATUS, DB_TIMEOUT, DB_TOTAL_CHANGES,
DB_TRACE, DB_TRANSACTION, DB_UNLOCK_NOTIFY,
DB_UPDATE_HOOK, DB_VERSION
};
/* don't leave trailing commas on DB_enum, it confuses the AIX xlc compiler */
@@ -2730,9 +2760,11 @@ static int DbObjCmd(void *cd, Tcl_Interp *interp, int objc,Tcl_Obj *const*objv){
}
/*
** $db log_hook ?script?
** $db update_hook ?script?
** $db rollback_hook ?script?
*/
case DB_LOG_HOOK:
case DB_UPDATE_HOOK:
case DB_ROLLBACK_HOOK: {
@@ -2742,6 +2774,8 @@ static int DbObjCmd(void *cd, Tcl_Interp *interp, int objc,Tcl_Obj *const*objv){
Tcl_Obj **ppHook;
if( choice==DB_UPDATE_HOOK ){
ppHook = &pDb->pUpdateHook;
}else if( choice==DB_LOG_HOOK ){
ppHook = &pDb->pLogHook;
}else{
ppHook = &pDb->pRollbackHook;
}
@@ -2767,6 +2801,7 @@ static int DbObjCmd(void *cd, Tcl_Interp *interp, int objc,Tcl_Obj *const*objv){
sqlite3_update_hook(pDb->db, (pDb->pUpdateHook?DbUpdateHandler:0), pDb);
sqlite3_rollback_hook(pDb->db,(pDb->pRollbackHook?DbRollbackHandler:0),pDb);
sqlite3_log_hook(pDb->db,(pDb->pLogHook?DbLogHandler:0),pDb);
break;
}