| /* |
| * Copyright © 2020 Collabora, Ltd. |
| * Author: Antonio Caggiano <antonio.caggiano@collabora.com> |
| * |
| * SPDX-License-Identifier: MIT |
| */ |
| |
| #pragma once |
| |
| #include <perfetto.h> |
| |
| #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); |
| |
| /// @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 |
