Switch Databases to WAL mode. Set autocommit to 100. (44c529b6) · Commits · e / os / android_frameworks_base

core/jni/android_database_SQLiteDatabase.cpp

+20 −0

Original line number	Diff line number	Diff line
		@@ -101,6 +101,8 @@ static void dbopen(JNIEnv* env, jobject object, jstring pathString, jint flags)
		sqlite3_stmt * statement = NULL;
		char const * path8 = env->GetStringUTFChars(pathString, NULL);
		int sqliteFlags;
		// Error code handling for SQLite exec
		char* zErrMsg = NULL;

		// register the logging func on sqlite. needs to be done BEFORE any sqlite3 func is called.
		registerLoggingFunc(path8);
		@@ -121,6 +123,24 @@ static void dbopen(JNIEnv* env, jobject object, jstring pathString, jint flags)
		goto done;
		}

		// Configure databases to run in WAL mode.
		err = sqlite3_exec(handle,"PRAGMA journal_mode = WAL;",
		NULL, NULL,&zErrMsg);
		if (SQLITE_OK != err) {
		LOGE("sqlite3_exec to set journal_mode = WAL failed\n");
		throw_sqlite3_exception(env, handle);
		goto done;
		}

		// Set autocheckpoint = 100 pages
		err = sqlite3_wal_autocheckpoint(handle,
		100);
		if (SQLITE_OK != err) {
		LOGE("sqlite3_exec to set WAL autocheckpoint failed\n");
		throw_sqlite3_exception(env, handle);
		goto done;
		}

		// The soft heap limit prevents the page cache allocations from growing
		// beyond the given limit, no matter what the max page cache sizes are
		// set to. The limit does not, as of 3.5.0, affect any other allocations.