diff options
| -rw-r--r-- | example/counting.cc | 22 | ||||
| -rw-r--r-- | perf.hpp | 8 | ||||
| -rw-r--r-- | pmc.hpp | 62 |
3 files changed, 74 insertions, 18 deletions
diff --git a/example/counting.cc b/example/counting.cc index a2af7f9..5d086f6 100644 --- a/example/counting.cc +++ b/example/counting.cc @@ -1,18 +1,16 @@ -#include <linux/perf_event.h> #include "perf.hpp" +#include <cstdio> + int main() { - perf_group pg({ - {.name = "CPUCLK", - .type = PERF_TYPE_SOFTWARE, - .config = PERF_COUNT_SW_CPU_CLOCK}, - {.name = "TASK", - .type = PERF_TYPE_SOFTWARE, - .config = PERF_COUNT_SW_TASK_CLOCK}, - {.name = "INSN", - .type = PERF_TYPE_HARDWARE, - .config = PERF_COUNT_HW_INSTRUCTIONS}, - }); + perf_group pg({PMC_CPU_CLK, PMC_TASK_CLK, PMC_INSN, PMC_CYCLES}); + + std::puts("- start-stop-dump"); + pg.start(); + pg.stop(); + pg.dump(); + + std::puts("- start-2nop-stop-dump"); pg.start(); asm volatile("nop"); asm volatile("nop"); @@ -25,6 +25,8 @@ #ifndef LIBPERF_HPP #define LIBPERF_HPP +#include "pmc.hpp" + #include <asm/unistd.h> #include <asm/unistd_64.h> #include <linux/perf_event.h> @@ -72,12 +74,6 @@ static inline void read(int fd, T& buf) { class perf_group { public: - struct pmc_desc { - const char* name; - uint64_t type; - uint64_t config; - }; - enum mode : bool { RUN_SINGLE = false, RUN_GROUP = true, @@ -0,0 +1,62 @@ +/** + * MIT License + * + * Copyright (c) 2024 Johannes Stölp + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + **/ + +#ifndef LIBPERF_PMC_HPP +#define LIBPERF_PMC_HPP + +#include <linux/perf_event.h> + +#include <cstdint> + +struct pmc_desc { + const char* name; + uint64_t type; + uint64_t config; +}; + +inline constexpr pmc_desc PMC_CPU_CLK{ + .name = "CPUCLK", + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_CPU_CLOCK, +}; + +inline constexpr pmc_desc PMC_TASK_CLK{ + .name = "TASK", + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_TASK_CLOCK, +}; + +inline constexpr pmc_desc PMC_INSN{ + .name = "INSN", + .type = PERF_TYPE_HARDWARE, + .config = PERF_COUNT_HW_INSTRUCTIONS, +}; + +inline constexpr pmc_desc PMC_CYCLES{ + .name = "CYCLES", + .type = PERF_TYPE_HARDWARE, + .config = PERF_COUNT_HW_CPU_CYCLES, +}; + +#endif |