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src/tool/pps/pps.h

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+/*
+ * Copyright © 2020 Collabora, Ltd.
+ * Author: Antonio Caggiano <[email protected]>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#pragma once
+
+#ifndef ANDROID_LIBPERFETTO
+#include <perfetto.h>
+#else
+#include <perfetto/tracing.h>
+#include <perfetto/common/gpu_counter_descriptor.gen.h>
+#include <perfetto/common/gpu_counter_descriptor.pbzero.h>
+#include <perfetto/config/gpu/gpu_counter_config.pbzero.h>
+#include <perfetto/trace/clock_snapshot.pbzero.h>
+#include <perfetto/trace/gpu/gpu_counter_event.pbzero.h>
+#endif
+
+#define PPS_LOG PERFETTO_LOG
+#define PPS_LOG_IMPORTANT PERFETTO_ILOG
+#define PPS_LOG_ERROR PERFETTO_ELOG
+#define PPS_LOG_FATAL PERFETTO_FATAL
+
+namespace pps
+{
+enum class State {
+   Stop,  // initial state, or stopped by the tracing service
+   Start, // running, sampling data
+};
+
+/// @brief Checks whether a return value is valid
+/// @param res Result from a syscall
+/// @param msg Message to prepend to strerror
+/// @return True if ok, false otherwise
+bool check(int res, const char *msg);
+
+void make_thread_rt();
+
+/// @param num Numerator
+/// @param den Denominator
+/// @return A ratio between two floating point numbers, or 0 if the denominator is 0
+constexpr double ratio(double num, double den)
+{
+   return den > 0.0 ? num / den : 0.0;
+}
+
+} // namespace pps