39 lines
917 B
C++
39 lines
917 B
C++
/*
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* Copyright © 2020 Collabora, Ltd.
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* Author: Antonio Caggiano <antonio.caggiano@collabora.com>
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*
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include <perfetto.h>
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#define PPS_LOG PERFETTO_LOG
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#define PPS_LOG_IMPORTANT PERFETTO_ILOG
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#define PPS_LOG_ERROR PERFETTO_ELOG
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#define PPS_LOG_FATAL PERFETTO_FATAL
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namespace pps
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{
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enum class State {
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Stop, // initial state, or stopped by the tracing service
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Start, // running, sampling data
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};
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/// @brief Checks whether a return value is valid
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/// @param res Result from a syscall
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/// @param msg Message to prepend to strerror
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/// @return True if ok, false otherwise
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bool check(int res, const char *msg);
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/// @param num Numerator
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/// @param den Denominator
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/// @return A ratio between two floating point numbers, or 0 if the denominator is 0
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constexpr double ratio(double num, double den)
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{
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return den > 0.0 ? num / den : 0.0;
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}
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} // namespace pps
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