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How does this milw0rm heap spraying exploit work?
...e chunk, the probability of jumping there is high). When we jump there the CPU will keep executing or cl, [edx] instructions until in reaches the beginning of shellcode that's put in memory.
I've disassembled the shellcode:
00000000 C9 leave
00000001 2B1F sub ebx,[edi...
multiprocessing: sharing a large read-only object between processes?
... the time that
Process.start() was called.
Example
On Windows (single CPU):
#!/usr/bin/env python
import os, sys, time
from multiprocessing import Pool
x = 23000 # replace `23` due to small integers share representation
z = [] # integers are immutable, let's try mutable object
def printx(...
Building and running app via Gradle and Android Studio is slower than via Eclipse
...ject with gradle files and indexing tasks). Measure build time and process CPU with and without antivirus enabled to see if it is related.
Profiling a build
Gradle has built-in support for profiling projects. Different projects are using a different combination of plugins and custom scripts. Usin...
Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...浮点数会慢（除非大于100,000,000,000,000），或是会有精度问题。
你可以以如下的方式表示数字，0x开头的16进制和C是很像的。
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num = 1024
num = 3.0
num = 3.1416
num = 314.16e-2
num = 0.31416E1
num = ...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
...程来处理的 IO 模型，但是效率相对比较差，也很容易出问题，所以暂时不做介绍了）。在这些多路复用的模式中，异步阻塞/非阻塞模式的扩展性和性能最好。
引入阻塞/非阻塞,、同步/异步比喻很形象的一段话：
有A，B，C，D...
When should I use Lazy?
... I believe the main trade-off is between memory usage (lazy) and cpu usage (not-lazy). Because lazy has to do some extra book-keeping, InitLazy would use more memory than the other solutions. It also might have a minor performance hit on each access, while it checks whether it already has ...
Structs versus classes
... as simple a guarantee of correctness as I can and hence not have to waste CPU cycles and brain cycles on checks and edge-cases, and being appropriately mutable or immutable helps there), but it would counter any knee-jerk reaction to your saying immutability can be slower.
– J...
What is the list of possible values for navigator.platform as of today? [closed]
...his definition is a bit vague. A decade ago a 'platform' would either be a CPU architecture or an operating system. In recent years handheld and media devices can be platforms too.
The interpretation
As with everything on the web, our fate is in the hands of the mighty browser vendors. In this case...
What's the use of Jade or Handlebars when writing AngularJs apps
...l. Mentally parsing a JADE template vs. raw HTML requires equal 'wetware' cpu time for me. I won't go so far as to say you're unprofessional if you disagree, but to me it's the same thing. @ Philipp, your analogy of parsing C/C++ to assembly being equal to parsing JADE to HTML is poor, there are ...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...lers like clang choose not to use reciprocal + Newton for scalar on recent CPUs, because it's usually not faster. In most loops, div isn't the only operation, so total uop throughput is often the bottleneck even when there's a divps or divss. See Floating point division vs floating point multiplic...