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#region Copyright notice and license
// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using System;
using System.IO;
using System.Threading;
using Grpc.Core.Internal;
namespace Grpc.Core.Profiling
{
internal static class Profilers
{
static readonly NopProfiler defaultProfiler = new NopProfiler();
static readonly ThreadLocal<IProfiler> profilers = new ThreadLocal<IProfiler>();
public static IProfiler ForCurrentThread()
{
return profilers.Value ?? defaultProfiler;
}
public static void SetForCurrentThread(IProfiler profiler)
{
profilers.Value = profiler;
}
public static ProfilerScope NewScope(this IProfiler profiler, string tag)
{
return new ProfilerScope(profiler, tag);
}
}
internal class NopProfiler : IProfiler
{
public void Begin(string tag)
{
}
public void End(string tag)
{
}
public void Mark(string tag)
{
}
}
// Profiler using Timespec.PreciseNow
internal class BasicProfiler : IProfiler
{
ProfilerEntry[] entries;
int count;
public BasicProfiler() : this(1024*1024)
{
}
public BasicProfiler(int capacity)
{
this.entries = new ProfilerEntry[capacity];
}
public void Begin(string tag) {
AddEntry(new ProfilerEntry(Timespec.PreciseNow, ProfilerEntry.Type.BEGIN, tag));
}
public void End(string tag) {
AddEntry(new ProfilerEntry(Timespec.PreciseNow, ProfilerEntry.Type.END, tag));
}
public void Mark(string tag) {
AddEntry(new ProfilerEntry(Timespec.PreciseNow, ProfilerEntry.Type.MARK, tag));
}
public void Reset()
{
count = 0;
}
public void Dump(string filepath)
{
using (var stream = new StreamWriter(filepath))
{
Dump(stream);
}
}
public void Dump(TextWriter stream)
{
for (int i = 0; i < count; i++)
{
var entry = entries[i];
stream.WriteLine(entry.ToString());
}
}
// NOT THREADSAFE!
void AddEntry(ProfilerEntry entry) {
entries[count++] = entry;
}
}
}
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