log_sink_set.h (1977B)
1 // Copyright 2022 The Abseil Authors. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 // 15 // ----------------------------------------------------------------------------- 16 // File: log/internal/log_sink_set.h 17 // ----------------------------------------------------------------------------- 18 19 #ifndef ABSL_LOG_INTERNAL_LOG_SINK_SET_H_ 20 #define ABSL_LOG_INTERNAL_LOG_SINK_SET_H_ 21 22 #include "absl/base/config.h" 23 #include "absl/log/log_entry.h" 24 #include "absl/log/log_sink.h" 25 #include "absl/types/span.h" 26 27 namespace absl { 28 ABSL_NAMESPACE_BEGIN 29 namespace log_internal { 30 31 // Returns true if a globally-registered `LogSink`'s `Send()` is currently 32 // being invoked on this thread. 33 bool ThreadIsLoggingToLogSink(); 34 35 // This function may log to two sets of sinks: 36 // 37 // * If `extra_sinks_only` is true, it will dispatch only to `extra_sinks`. 38 // `LogMessage::ToSinkAlso` and `LogMessage::ToSinkOnly` are used to attach 39 // extra sinks to the entry. 40 // * Otherwise it will also log to the global sinks set. This set is managed 41 // by `absl::AddLogSink` and `absl::RemoveLogSink`. 42 void LogToSinks(const absl::LogEntry& entry, 43 absl::Span<absl::LogSink*> extra_sinks, bool extra_sinks_only); 44 45 // Implementation for operations with log sink set. 46 void AddLogSink(absl::LogSink* sink); 47 void RemoveLogSink(absl::LogSink* sink); 48 void FlushLogSinks(); 49 50 } // namespace log_internal 51 ABSL_NAMESPACE_END 52 } // namespace absl 53 54 #endif // ABSL_LOG_INTERNAL_LOG_SINK_SET_H_