2 * Copyright 2004-present Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 #include <folly/experimental/logging/Init.h>
17 #include <folly/experimental/logging/xlog.h>
18 #include <folly/init/Init.h>
20 DEFINE_string(logging, "", "Logging category configuration string");
24 "Log handler style: async, immediate, or none");
29 "Crash with a message to this category instead of the default");
31 using folly::LogLevel;
34 * This is a simple helper program to exercise the LOG(FATAL) functionality.
36 int main(int argc, char* argv[]) {
37 // Call folly::init() and then initialize log levels and handlers
38 folly::init(&argc, &argv);
40 if (FLAGS_handler_style == "async") {
41 initLoggingGlogStyle(FLAGS_logging, LogLevel::INFO, true);
42 } else if (FLAGS_handler_style == "immediate") {
43 initLoggingGlogStyle(FLAGS_logging, LogLevel::INFO, false);
44 } else if (FLAGS_handler_style != "none") {
45 XLOGF(FATAL, "unknown log handler style \"{}\"", FLAGS_handler_style);
48 if (!FLAGS_category.empty()) {
49 folly::Logger logger{FLAGS_category};
50 FB_LOG(logger, FATAL, "crashing to category ", FLAGS_category);
53 XLOG(FATAL) << "test program crashing!";
54 // Even though main() is defined to return an integer, the compiler
55 // should be able to detect that XLOG(FATAL) never returns. It shouldn't
56 // complain that we don't return an integer here.