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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef ProfilerThreadRegistrationInfo_h
+#define ProfilerThreadRegistrationInfo_h
+
+#include "mozilla/BaseAndGeckoProfilerDetail.h"
+#include "mozilla/ProfilerUtils.h"
+#include "mozilla/TimeStamp.h"
+
+#include <string>
+
+namespace mozilla::profiler {
+
+// This class contains immutable information about a thread which needs to be
+// stored across restarts of the profiler and which can be useful even after the
+// thread has stopped running.
+class ThreadRegistrationInfo {
+ public:
+ // Construct on the thread.
+ explicit ThreadRegistrationInfo(const char* aName) : mName(aName) {}
+
+ // Construct for a foreign thread (e.g., Java).
+ ThreadRegistrationInfo(const char* aName, ProfilerThreadId aThreadId,
+ bool aIsMainThread, const TimeStamp& aRegisterTime)
+ : mName(aName),
+ mRegisterTime(aRegisterTime),
+ mThreadId(aThreadId),
+ mIsMainThread(aIsMainThread) {}
+
+ // Only allow move construction, for extraction when the thread ends.
+ ThreadRegistrationInfo(ThreadRegistrationInfo&&) = default;
+
+ // Other copies/moves disallowed.
+ ThreadRegistrationInfo(const ThreadRegistrationInfo&) = delete;
+ ThreadRegistrationInfo& operator=(const ThreadRegistrationInfo&) = delete;
+ ThreadRegistrationInfo& operator=(ThreadRegistrationInfo&&) = delete;
+
+ [[nodiscard]] const char* Name() const { return mName.c_str(); }
+ [[nodiscard]] const TimeStamp& RegisterTime() const { return mRegisterTime; }
+ [[nodiscard]] ProfilerThreadId ThreadId() const { return mThreadId; }
+ [[nodiscard]] bool IsMainThread() const { return mIsMainThread; }
+
+ private:
+ static TimeStamp ExistingRegisterTimeOrNow() {
+ TimeStamp registerTime = baseprofiler::detail::GetThreadRegistrationTime();
+ if (!registerTime) {
+ registerTime = TimeStamp::Now();
+ }
+ return registerTime;
+ }
+
+ const std::string mName;
+ const TimeStamp mRegisterTime = ExistingRegisterTimeOrNow();
+ const ProfilerThreadId mThreadId = profiler_current_thread_id();
+ const bool mIsMainThread = profiler_is_main_thread();
+};
+
+} // namespace mozilla::profiler
+
+#endif // ProfilerThreadRegistrationInfo_h