rewrite profiler

examples/testbed/framework/json_profiler.cpp

@@ -0,0 +1,122 @@
+/*
+* Copyright (c) 2016-2016 Irlan Robson http://www.irlan.net
+*
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be held liable for any damages
+* arising from the use of this software.
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+* 1. The origin of this software must not be misrepresented; you must not
+* claim that you wrote the original software. If you use this software
+* in a product, an acknowledgment in the product documentation would be
+* appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+* misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include <testbed/framework/json_profiler.h>
+
+#define STRING(x) String(x, sizeof(x) - 1)
+
+JsonProfiler::JsonProfiler()
+{
+	m_file = nullptr;
+	m_stream = nullptr;
+	m_writer = nullptr;
+}
+
+JsonProfiler::~JsonProfiler()
+{
+
+}
+
+void JsonProfiler::BeginEvents()
+{
+	if (m_file)
+	{
+		return;
+	}
+
+	m_file = fopen("profile.json", "wt");
+	if (!m_file)
+	{
+		return;
+	}
+
+	static char buffer[512];
+	m_stream = new FileWriteStream(m_file, buffer, sizeof(buffer));
+
+	m_writer = new Writer<FileWriteStream>(*m_stream);
+
+	m_writer->StartObject();
+	m_writer->STRING("traceEvents");
+	m_writer->StartArray();
+}
+
+void JsonProfiler::EndEvents()
+{
+	if (!m_writer)
+	{
+		return;
+	}
+
+	m_writer->EndArray();
+	m_writer->EndObject();
+
+	delete m_writer;
+	m_writer = nullptr;
+
+	delete m_stream;
+	m_stream = nullptr;
+
+	fclose(m_file);
+	m_file = nullptr;
+}
+
+void JsonProfiler::BeginEvent(i32 tid, i32 pid, const char* name, float64 t)
+{
+	if (!m_writer)
+	{
+		return;
+	}
+
+	const char* phase = "B";
+
+	float64 scale = 1000.0;
+
+	m_writer->StartObject();
+	m_writer->STRING("pid");  m_writer->Int(pid);
+	m_writer->STRING("tid");  m_writer->Int(tid);
+	m_writer->STRING("ts");   m_writer->Int64((u64)(t * scale));
+	m_writer->STRING("ph");   m_writer->String(phase, 1);
+	m_writer->STRING("cat");  m_writer->STRING("physics");
+	m_writer->STRING("name"); m_writer->String(name, strlen(name));
+	m_writer->STRING("args"); m_writer->StartObject(); m_writer->EndObject();
+	m_writer->EndObject();
+}
+
+void JsonProfiler::EndEvent(i32 tid, i32 pid, const char* name, float64 t)
+{
+	if (!m_writer)
+	{
+		return;
+	}
+
+	const char* phase = "E";
+
+	float64 scale = 1000.0;
+
+	m_writer->StartObject();
+	m_writer->STRING("pid");  m_writer->Int(pid);
+	m_writer->STRING("tid");  m_writer->Int(tid);
+	m_writer->STRING("ts");   m_writer->Int64((u64)(t * scale));
+	m_writer->STRING("ph");   m_writer->String(phase, 1);
+	m_writer->STRING("cat");  m_writer->STRING("physics");
+	m_writer->STRING("name"); m_writer->String(name, strlen(name));
+	m_writer->STRING("args"); m_writer->StartObject(); m_writer->EndObject();
+	m_writer->EndObject();
+}
+
+#undef STRING