coro 1.0.5

简介

弹片是一个高性能并发库。它使用 在kqueue（freebsd， OS X）或/dev/epoll（linux），主要用Pyrex/Cython编写， 支持32位和64位平台。它是 在Ironport Systems公司工作8年，该公司是一家高速铁路供应商 邮件设备。2011年底，思科系统（cisco systems）对其进行了开源。

状态

2013年4月18日：我最近合并了几家分支机构 重要功能：

• Support for pure-cython servers (branch ‘pxdfix’)
• Full DNS resolver implementation (branch ‘dns-cache’)
• Updated postgres support (branch ‘postgres’)
• Included OpenSSL support

功能

• Lightweight threads, event-driven scheduler.
• Underneath: non-blocking operations on descriptors, like sockets and pipes.
• On top, synchronous API for straight-line, simple code.
• Highly scalable - tens or hundreds of thousands of connections/threads.
• Thread synchronization primitives, like mutexes, semaphores, etc…
• with_timeout(): wrap any funcall with a timeout.
• Wait on kqueue events like file/directory changes, signals, processes, etc… [kqueue only]
• DNS resolver and cache
• HTTP server and client (plus WebSocket, RFC6455 & hixie-76)
• Support for TLS via tlslite and openssl (plus NPN for both)
• other protocols/codecs: ldap, asn1, ftp, mysql, postgres, AMQP.
• MIT License.

优点

与其他可用于python的并发包相比， 弹片给你：

• Speed and Efficiency: the entire scheduler, poller, socket layer, synchronization objects, etc… are written in Cython, with an emphasis on performance and low memory usage.
• Stock Python: Shrapnel works with out-of-the-box CPython [2.X]. No special variants of Python are needed, it will even work with your OS’s OEM python installation. So you can use all the external libraries/modules you’ve come to rely on.
• No Callbacks: no need to cuisinart your application into a thousand callbacks. No need to decompose every action into a state machine. Write simple, performant code now without having to send your programmers to class.
• Drop to Cython for speed: all the capabilities of the system are available from Cython, so you can e.g. write a server entirely in Cython for speed. You can interface with external libraries, and do thread switches from Cython or C. It’s even possible to have external C code call back into shrapnel. This makes it easy to prototype your application in Python, and then push only the hot spots into Cython.
• Timeouts: Shrapnel provides a general timeout mechanism that can be used to wrap any function call with a timeout.
• Profiler: Thread-aware profiler generates HTML reports.

教程

见http://ironport.github.com/shrapnel/tutorial.html

API文档

见http://ironport.github.com/shrapnel/