COMPMID-415: New framework - printers [4/5]

Change-Id: Ibbaced7b01c16361843f4381fbf6cd15a4487062
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/79758
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>

1 files changed, 133 insertions, 0 deletions

diff --git a/framework/printers/JSONPrinter.cpp b/framework/printers/JSONPrinter.cpp
new file mode 100644
index 0000000000..66973bb1ab
--- /dev/null
+++ b/framework/printers/JSONPrinter.cpp
@@ -0,0 +1,133 @@
+/*
+ * 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 "JSONPrinter.h"
+
+#include <algorithm>
+
+namespace arm_compute
+{
+namespace test
+{
+namespace framework
+{
+void JSONPrinter::print_separator(bool &flag)
+{
+    if(flag)
+    {
+        flag = false;
+    }
+    else
+    {
+        *_stream << ",";
+    }
+}
+
+void JSONPrinter::print_entry(const std::string &name, const std::string &value)
+{
+    print_separator(_first_entry);
+
+    *_stream << R"(")" << name << R"(" : ")" << value << R"(")";
+}
+
+void JSONPrinter::print_global_header()
+{
+    *_stream << "{";
+}
+
+void JSONPrinter::print_global_footer()
+{
+    *_stream << "}\n";
+}
+
+void JSONPrinter::print_run_header()
+{
+    print_separator(_first_entry);
+
+    *_stream << R"("tests" : {)";
+}
+
+void JSONPrinter::print_run_footer()
+{
+    *_stream << "}";
+}
+
+void JSONPrinter::print_test_header(const std::string &name)
+{
+    print_separator(_first_test);
+
+    *_stream << R"(")" << name << R"(" : {)";
+}
+
+void JSONPrinter::print_test_footer()
+{
+    *_stream << "}";
+}
+
+void JSONPrinter::print_measurements(const Profiler::MeasurementsMap &measurements)
+{
+    for(auto i_it = measurements.cbegin(), i_end = measurements.cend(); i_it != i_end;)
+    {
+        *_stream << R"(")" << i_it->first << R"(" : {)";
+
+        auto add_measurements = [](double a, const Instrument::Measurement & b)
+        {
+            return a + b.value;
+        };
+
+        auto cmp_measurements = [](const Instrument::Measurement & a, const Instrument::Measurement & b)
+        {
+            return a.value < b.value;
+        };
+
+        double     sum_values    = std::accumulate(i_it->second.cbegin(), i_it->second.cend(), 0., add_measurements);
+        int        num_values    = i_it->second.size();
+        const auto minmax_values = std::minmax_element(i_it->second.begin(), i_it->second.end(), cmp_measurements);
+
+        if(num_values > 2)
+        {
+            sum_values -= minmax_values.first->value + minmax_values.second->value;
+            num_values -= 2;
+        }
+
+        auto measurement_to_string = [](const Instrument::Measurement & measurement)
+        {
+            return support::cpp11::to_string(measurement.value);
+        };
+
+        *_stream << R"("avg" : )" << (sum_values / num_values) << ",";
+        *_stream << R"("min" : )" << minmax_values.first->value << ",";
+        *_stream << R"("max" : )" << minmax_values.second->value << ",";
+        *_stream << R"("raw" : [)" << join(i_it->second.begin(), i_it->second.end(), ",", measurement_to_string) << "],";
+        *_stream << R"("unit" : ")" << minmax_values.first->unit << R"(")";
+        *_stream << "}";
+
+        if(++i_it != i_end)
+        {
+            *_stream << ",";
+        }
+    }
+}
+} // namespace framework
+} // namespace test
+} // namespace arm_compute