mrkline

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

CoolOppo

How to Embed an exe Inside Another exe as a Resource and Then Launch It

While working on a utility project today, I stumbled upon wanting to embed an executable inside another executable. Sounds fun doesn’t it? And what is even more fun is to be able to launch the embedded exe!

Basically, here’s how it works. You embed Foo.exe inside Bar.exe. And by embed I mean, add Foo.exe as a resource in Bar.exe and then, from Bar.exe’s code, you can launch Foo.exe using CreateProcess().

So before answering the "Why?" lets answer the "How?"

Rename Foo.exe to Foo.txt. We do this just to be safe and to prevent the resource compiler (manager) from throwing unwanted errors. Now add Foo.txt as a normal resource in Bar.exe. Create an entry in Bar.exe’s resource script as below:

rise-worlds

for 4.2.4 or higher, 4.2.5,4.2.6,4.3.7, it's works, this is the way which makes Always in evaluation mode.

1. open Terminal, go to the dir : cd /Applications/Beyond Compare.app/Contents/MacOS
2. change the name BCompare to BCompare.bak: mv BCompare BCompare.bak
3. touch a file name BCompare , and chmod a+ux BCompare : touch BCompare && chmod a+ux BCompare
4. open BCompare with text editor, insert the script :

#!/bin/bash
rm "/Users/$(whoami)/Library/Application Support/Beyond Compare/registry.dat"
"`dirname "$0"`"/BCompare.bak $@