add hello world example and edit source tree

examples/testbed/framework/profiler.cpp

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+/*
+* 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/profiler.h>
+#include <bounce/common/profiler.h>
+#include <bounce/common/time.h>
+#include <bounce/common/template/queue.h>
+
+struct Event
+{
+	i32 tid;
+	i32 pid;
+	const char* name;
+	float64 t0;
+	float64 t1;
+	Event* parent;
+};
+
+static b3Time time;
+static b3BoundedQueue<Event, 256> events;
+static Event* top = NULL;
+
+bool b3PushProfileScope(const char* name)
+{
+	time.Update();
+
+	Event e;
+	e.tid = -1;
+	e.pid = -1;
+	e.t0 = time.GetCurrentMilis();
+	e.t1 = 0;
+	e.name = name;
+	e.parent = top;
+
+	Event* back = events.Push(e);
+	if (back)
+	{
+		top = back;
+	}
+
+	return back != NULL;
+}
+
+void b3PopProfileScope()
+{
+	B3_ASSERT(top);
+	B3_ASSERT(top->t1 == 0);
+
+	time.Update();
+	top->t1 = time.GetCurrentMilis();
+	B3_ASSERT(top->t1 != 0);
+	top = top->parent;
+}
+
+void ProfileBegin()
+{
+	B3_ASSERT(events.IsEmpty());
+}
+
+void ProfileEnd()
+{
+	ProfileBeginEvents();
+
+	while (events.IsEmpty() == false)
+	{
+		const Event& e = events.Front();
+		events.Pop();
+
+		ProfileEvent(e.tid, e.pid, e.name, e.t0, e_begin);
+		ProfileEvent(e.tid, e.pid, e.name, e.t1, e_end);
+		ProfileEvent(e.tid, e.pid, e.name, e.t1 - e.t0);
+	}
+
+	B3_ASSERT(events.IsEmpty());
+
+	ProfileEndEvents();
+}
+
+//
+
+#define PROFILER_SCREEN 1
+#define PROFILER_JSON 2
+
+#define PROFILER_OUTPUT PROFILER_SCREEN
+
+#if PROFILER_OUTPUT == PROFILER_SCREEN
+
+extern Profiler* g_profiler;
+
+void ProfileBeginEvents()
+{
+
+}
+
+void ProfileEvent(i32 tid, i32 pid, const char* name, float64 time, ProfileType type)
+{
+
+}
+
+void ProfileEvent(i32 tid, i32 pid, const char* name, float64 elapsed)
+{
+	g_profiler->Add(name, elapsed);
+}
+
+void ProfileEndEvents()
+{
+
+}
+
+#elif PROFILER_OUTPUT == PROFILER_JSON
+
+#include <rapidjson/filewritestream.h>
+#include <rapidjson/writer.h>
+
+using namespace rapidjson;
+
+static FILE* file = NULL;
+static FileWriteStream* stream = NULL;
+static Writer<FileWriteStream>* writer = NULL;
+
+#define STRING(x) String(x, sizeof(x) - 1)
+
+void ProfileBeginEvents()
+{
+	if (file)
+	{
+		return;
+	}
+
+	file = fopen("profile.json", "wt");
+	if (!file)
+	{
+		return;
+	}
+
+	static char buffer[512];
+	stream = new FileWriteStream(file, buffer, sizeof(buffer));
+
+	writer = new Writer<FileWriteStream>(*stream);
+
+	writer->StartObject();
+	writer->STRING("traceEvents");
+	writer->StartArray();
+}
+
+void ProfileEvent(i32 tid, i32 pid, const char* name, float64 time, ProfileType type)
+{
+	if (!writer)
+	{
+		return;
+	}
+
+	const char* phase = 0;
+	switch (type)
+	{
+	case ProfileType::e_begin:  phase = "B"; break;
+	case ProfileType::e_end:    phase = "E"; break;
+	default: B3_ASSERT(false);
+	}
+
+	float64 scale = 1000.0;
+
+	writer->StartObject();
+	writer->STRING("pid");  writer->Int(pid);
+	writer->STRING("tid");  writer->Int(tid);
+	writer->STRING("ts");   writer->Int64((u64)(time * scale));
+	writer->STRING("ph");   writer->String(phase, 1);
+	writer->STRING("cat");  writer->STRING("physics");
+	writer->STRING("name"); writer->String(name, strlen(name));
+	writer->STRING("args"); writer->StartObject(); writer->EndObject();
+	writer->EndObject();
+}
+
+void ProfileEvent(i32 tid, i32 pid, const char* name, float64 elapsed)
+{
+}
+
+void ProfileEndEvents()
+{
+	if (!writer)
+	{
+		return;
+	}
+
+	writer->EndArray();
+	writer->EndObject();
+
+	delete writer;
+	writer = NULL;
+
+	delete stream;
+	stream = NULL;
+
+	fclose(file);
+	file = NULL;
+}
+
+#undef STRING
+
+#else
+
+#endif