1 files changed, 58 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/rtc_event_log_output_file.h b/third_party/libwebrtc/api/rtc_event_log_output_file.h
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index 0000000000..c9ae0a8ede
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+++ b/third_party/libwebrtc/api/rtc_event_log_output_file.h
@@ -0,0 +1,58 @@
+/*
+ *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef API_RTC_EVENT_LOG_OUTPUT_FILE_H_
+#define API_RTC_EVENT_LOG_OUTPUT_FILE_H_
+
+#include <stddef.h>
+#include <stdio.h>
+
+#include <string>
+
+#include "api/rtc_event_log_output.h"
+#include "rtc_base/system/file_wrapper.h"
+
+namespace webrtc {
+
+class RtcEventLogOutputFile final : public RtcEventLogOutput {
+ public:
+  static const size_t kMaxReasonableFileSize;  // Explanation at declaration.
+
+  // Unlimited/limited-size output file (by filename).
+  explicit RtcEventLogOutputFile(const std::string& file_name);
+  RtcEventLogOutputFile(const std::string& file_name, size_t max_size_bytes);
+
+  // Limited-size output file (by FILE*). This class takes ownership
+  // of the FILE*, and closes it on destruction.
+  RtcEventLogOutputFile(FILE* file, size_t max_size_bytes);
+
+  ~RtcEventLogOutputFile() override = default;
+
+  bool IsActive() const override;
+
+  bool Write(absl::string_view output) override;
+
+ private:
+  RtcEventLogOutputFile(FileWrapper file, size_t max_size_bytes);
+
+  // IsActive() can be called either from outside or from inside, but we don't
+  // want to incur the overhead of a virtual function call if called from inside
+  // some other function of this class.
+  inline bool IsActiveInternal() const;
+
+  // Maximum size, or zero for no limit.
+  const size_t max_size_bytes_;
+  size_t written_bytes_{0};
+  FileWrapper file_;
+};
+
+}  // namespace webrtc
+
+#endif  // API_RTC_EVENT_LOG_OUTPUT_FILE_H_