1 files changed, 144 insertions, 0 deletions
diff --git a/tests/benchmark/PMUCounter.cpp b/tests/benchmark/PMUCounter.cpp
new file mode 100644
index 0000000000..e87dae82e6
--- /dev/null
+++ b/tests/benchmark/PMUCounter.cpp
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * 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.
+ */
+#include "PMUCounter.h"
+
+#include "Utils.h"
+
+#define _GNU_SOURCE 1
+#include <asm/unistd.h>
+#include <csignal>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <fcntl.h>
+#include <linux/hw_breakpoint.h>
+#include <linux/perf_event.h>
+#include <stdexcept>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+namespace arm_compute
+{
+namespace test
+{
+namespace benchmark
+{
+CycleCounter::CycleCounter()
+{
+    const pid_t pid = getpid();
+
+    struct perf_event_attr perf_config
+    {
+    };
+    memset(&perf_config, 0, sizeof(struct perf_event_attr));
+
+    perf_config.config = PERF_COUNT_HW_CPU_CYCLES;
+    perf_config.size   = sizeof(struct perf_event_attr);
+    perf_config.type   = PERF_TYPE_HARDWARE;
+    // The inherit bit specifies that this counter should count events of child
+    // tasks as well as the task specified
+    perf_config.inherit = 1;
+    // Enables saving of event counts on context switch for inherited tasks
+    perf_config.inherit_stat = 1;
+
+    _fd = syscall(__NR_perf_event_open, &perf_config, pid, -1, -1, 0);
+
+    if(_fd < 0)
+    {
+        throw std::runtime_error("perf_event_open for cycles failed");
+    }
+}
+
+std::string CycleCounter::id() const
+{
+    return "Cycle Counter";
+}
+
+void CycleCounter::start()
+{
+    ioctl(_fd, PERF_EVENT_IOC_RESET, 0);
+    ioctl(_fd, PERF_EVENT_IOC_ENABLE, 0);
+}
+
+void CycleCounter::stop()
+{
+    ioctl(_fd, PERF_EVENT_IOC_DISABLE, 0);
+    read(_fd, &_cycles, sizeof(_cycles));
+}
+
+std::unique_ptr<Instrument::IMeasurement> CycleCounter::get_measurement() const
+{
+    return ::arm_compute::test::cpp14::make_unique<Instrument::Measurement<long long>>(_cycles);
+}
+
+InstructionCounter::InstructionCounter()
+{
+    const pid_t pid = getpid();
+
+    struct perf_event_attr perf_config
+    {
+    };
+    memset(&perf_config, 0, sizeof(struct perf_event_attr));
+
+    perf_config.config = PERF_COUNT_HW_INSTRUCTIONS;
+    perf_config.size   = sizeof(struct perf_event_attr);
+    perf_config.type   = PERF_TYPE_HARDWARE;
+    // The inherit bit specifies that this counter should count events of child
+    // tasks as well as the task specified
+    perf_config.inherit = 1;
+    // Enables saving of event counts on context switch for inherited tasks
+    perf_config.inherit_stat = 1;
+
+    _fd = syscall(__NR_perf_event_open, &perf_config, pid, -1, -1, 0);
+
+    if(_fd < 0)
+    {
+        throw std::runtime_error("perf_event_open for instructions failed");
+    }
+}
+
+std::string InstructionCounter::id() const
+{
+    return "Instruction Counter";
+}
+
+void InstructionCounter::start()
+{
+    ioctl(_fd, PERF_EVENT_IOC_RESET, 0);
+    ioctl(_fd, PERF_EVENT_IOC_ENABLE, 0);
+}
+
+void InstructionCounter::stop()
+{
+    ioctl(_fd, PERF_EVENT_IOC_DISABLE, 0);
+    read(_fd, &_instructions, sizeof(_instructions));
+}
+
+std::unique_ptr<Instrument::IMeasurement> InstructionCounter::get_measurement() const
+{
+    return std::unique_ptr<Instrument::IMeasurement>(new Instrument::Measurement<long long>(_instructions));
+}
+} // namespace benchmark
+} // namespace test
+} // namespace arm_compute