Koichi Shiraishi zchee

	DhyveOS	DockerRoot	RancherOS	Boot2Docker	Hyper on Mac (*7)
Version	2.0.0	1.2.8	0.4.2	1.9.1	0.4.0
Size	12 MB	13.7 MB	29 MB	30 MB	4.6 MB
Kernel	4.3.3	4.3.3	4.2.3	4.1.13	4.0.4
User Land	Buildroot(uClibc) + BusyBox v1.24.1	Buildroot(GLIBC) + BusyBox v1.24.1	Buildroot(GLIBC) + BusyBox v1.23.2	Tiny Core Linux v6.4.1	-
Docker	1.9.1	1.9.1	1.9.1	1.9.1	-
Storage Driver	btrfs	overlay	overlay (*2)	aufs (*2)	VDI
TLS	-	(*9)	✓	✓	-
Vagrant box	-	✓	(v0.4.1)	(*3)	-

Profiling an application in Mac OS X

Finding which process to profile

If your system is running slowly, perhaps a process is using too much CPU time and won't let other processes run smoothly. To find out which processes are taking up a lot of CPU time, you can use Apple's Activity Monitor.

The CPU pane shows how processes are affecting CPU (processor) activity:

Install ChromiumOS

Get Chromium OS from one of the following places
1. Download the vanilla build (old but stable): http://chromeos.hexxeh.net/
  1. NOTE: Password is facepunch
2. Download the nightly build (sync doesn't work): http://download-chromiumos.appspot.com/
  1. NOTE: If you want developer mode, you must change _base_ in the download URL to _test_ as the base image does not have developer tools enabled
  2. NOTE: Password is unknown, instructions for working around this are provided later
  3. NOTE: I could not get syncing working with this build, perhaps due to no API KEYS being provided???
NOTE: I could not move past the welcome screen on the 64bit build due to no network being found (32bit worked)

Introduction

ccache is a compiler cache. It speeds up recompilation of C/C++ code by caching previous compilations and detecting when the same compilation is being done again. This often results in a significant speedup in common compilations, especially when switching between branches. This page is about using ccache on Mac with clang and ninja build system. If you want to use Xcode, please refer to the old CCacheMac page.

In order to use ccache with clang, you need to use the current git HEAD, since the most recent version (3.1.9) doesn't contain the patch needed for using chromium style plugin.

Installation

To install ccache with [homebrew](http://mxcl.

	#include <iostream>

	void setBackground(unsigned r, unsigned g, unsigned b)
	{
	std::cout << "\x1b[48;2;" << r << ';' << g << ';' << b << 'm';
	}

	int main()
	{
	int point[4][3] = { {255,0,0},

	#include <clang-c/Index.h>
	#include <cstdlib>
	#include <iostream>

	/*
	* Compile with:
	* g++ complete.cc -o complete -lclang -L/usr/lib/llvm
	* Run with:
	* LIBCLANG_TIMING=1 ./complete file.cc line column [clang args...]
	*/

	import cProfile


	def profile_this(fn):
	def profiled_fn(args, *kwargs):
	# name for profile dump
	fpath = fn.__name__ + '.profile'
	prof = cProfile.Profile()
	ret = prof.runcall(fn, args, *kwargs)
	prof.dump_stats(fpath)

	#!/bin/sh
	# Generate test coverage statistics for Go packages.
	#
	# Works around the fact that `go test -coverprofile` currently does not work
	# with multiple packages, see https://code.google.com/p/go/issues/detail?id=6909
	#
	# Usage: script/coverage [--html\|--coveralls]
	#
	# --html Additionally create HTML report and open it in browser
	# --coveralls Push coverage statistics to coveralls.io

	package main

	import (
	"crypto/rand"
	"flag"
	"log"
	mrand "math/rand"
	"net"
	"os"
	"os/signal"

	function vid2Gif {
	if [[ $# != 3 ]]; then
	print "too many or too less arguments"
	return
	fi
	ffmpeg -y -i $1.mov -vf fps=10,scale=${2}:${3}:flags=lanczos,palettegen palette_$1.png
	ffmpeg -i $1.mov -i palette_$1.png -filter_complex "fps=10,scale=${2}:${3}:flags=lanczos[x];[x][1:v]paletteuse" -f gif - \| gifsicle --optimize=3 > $1.gif
	}