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-rw-r--r--src/bench/bench.cpp4
-rw-r--r--src/bench/perf.cpp53
-rw-r--r--src/bench/perf.h37
3 files changed, 0 insertions, 94 deletions
diff --git a/src/bench/bench.cpp b/src/bench/bench.cpp
index 21329a5151..de3e57b04f 100644
--- a/src/bench/bench.cpp
+++ b/src/bench/bench.cpp
@@ -3,7 +3,6 @@
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <bench/bench.h>
-#include <bench/perf.h>
#include <assert.h>
#include <iostream>
@@ -96,7 +95,6 @@ benchmark::BenchRunner::BenchRunner(std::string name, benchmark::BenchFunction f
void benchmark::BenchRunner::RunAll(Printer& printer, uint64_t num_evals, double scaling, const std::string& filter, bool is_list_only)
{
- perf_init();
if (!std::ratio_less_equal<benchmark::clock::period, std::micro>::value) {
std::cerr << "WARNING: Clock precision is worse than microsecond - benchmarks may be less accurate!\n";
}
@@ -126,8 +124,6 @@ void benchmark::BenchRunner::RunAll(Printer& printer, uint64_t num_evals, double
}
printer.footer();
-
- perf_fini();
}
bool benchmark::State::UpdateTimer(const benchmark::time_point current_time)
diff --git a/src/bench/perf.cpp b/src/bench/perf.cpp
deleted file mode 100644
index f92d08c56e..0000000000
--- a/src/bench/perf.cpp
+++ /dev/null
@@ -1,53 +0,0 @@
-// Copyright (c) 2016-2017 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#include <bench/perf.h>
-
-#if defined(__i386__) || defined(__x86_64__)
-
-/* These architectures support querying the cycle counter
- * from user space, no need for any syscall overhead.
- */
-void perf_init(void) { }
-void perf_fini(void) { }
-
-#elif defined(__linux__)
-
-#include <unistd.h>
-#include <sys/syscall.h>
-#include <linux/perf_event.h>
-
-static int fd = -1;
-static struct perf_event_attr attr;
-
-void perf_init(void)
-{
- attr.type = PERF_TYPE_HARDWARE;
- attr.config = PERF_COUNT_HW_CPU_CYCLES;
- fd = syscall(__NR_perf_event_open, &attr, 0, -1, -1, 0);
-}
-
-void perf_fini(void)
-{
- if (fd != -1) {
- close(fd);
- }
-}
-
-uint64_t perf_cpucycles(void)
-{
- uint64_t result = 0;
- if (fd == -1 || read(fd, &result, sizeof(result)) < (ssize_t)sizeof(result)) {
- return 0;
- }
- return result;
-}
-
-#else /* Unhandled platform */
-
-void perf_init(void) { }
-void perf_fini(void) { }
-uint64_t perf_cpucycles(void) { return 0; }
-
-#endif
diff --git a/src/bench/perf.h b/src/bench/perf.h
deleted file mode 100644
index 73ea8b9647..0000000000
--- a/src/bench/perf.h
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright (c) 2016 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-/** Functions for measurement of CPU cycles */
-#ifndef BITCOIN_BENCH_PERF_H
-#define BITCOIN_BENCH_PERF_H
-
-#include <stdint.h>
-
-#if defined(__i386__)
-
-static inline uint64_t perf_cpucycles(void)
-{
- uint64_t x;
- __asm__ volatile (".byte 0x0f, 0x31" : "=A" (x));
- return x;
-}
-
-#elif defined(__x86_64__)
-
-static inline uint64_t perf_cpucycles(void)
-{
- uint32_t hi, lo;
- __asm__ __volatile__ ("rdtsc" : "=a"(lo), "=d"(hi));
- return ((uint64_t)lo)|(((uint64_t)hi)<<32);
-}
-#else
-
-uint64_t perf_cpucycles(void);
-
-#endif
-
-void perf_init(void);
-void perf_fini(void);
-
-#endif // BITCOIN_BENCH_PERF_H