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Python±Ï¾¹ÊǽâÊÍÐ͵ÄÓïÑÔ£¬ÔÚ¸´ÔÓËã·¨ÉϵÄËÙ¶È»¹ÊDZÈCÒª²îÒ»µã¡£ÁíÍâ´óÁ¿µÄCµÄLibraryµÄÖØÓÃÒ²ÊÇÒ»¸öºÜÖØÒªµÄ»°Ìâ¡£ºÃÔÚPython¿ÉÒÔºÜÈÝÒ×µÄʹÓÃC±àдµÄmoduleÀ´Ìá¸ß¹Ø¼ü·¾¶µÄÐÔÄܺ͸´ÓÃÒÑÓеÄCµÄLibrary¡£ OK£¬ÎÒÃÇÏÈÀ´Ð´¸ö´óÕûÊý³Ë·¨À´¿´Ò»ÏÂPythonµÄÐÔÄÜ¡£ÎÒ¶ÔÐÔÄÜ·½Ãæ²»ÊǸßÊÖ£¬Õâ¸öÀý×Ó²»Ò»¶¨Ç¡µ±¡£È«µ±ÊǸöСʵÑé¡£ÁíÍâÖØµã»¹ÊÇ·ÅÔÚÈçºÎʹÓÃC±àдµÄÄ£¿éÉÏ¡£ÎªÁËÍ»³öÖØµã£¬¾Í¼ÙÉèÎÒÃÇÓÐCµÄLibraryµÄsource code£¬»òÕßCµÄmodule¾ÍÊÇΪÁËPython³ÌÐò¿ª·¢µÄ¡£ºÃ£¬¿ªÊ¼¡£ÏÈд¸öPythonµÄʵÏÖ¡£ #! /usr/bin/python #main.py import time import timeP import timeC t1 = time.time() timeP.time() t2 = time.time() timeC.time() t3 = time.time() print "ython module time: %f seconds" % (t2 - t1) print "C module time: %f seconds" % (t3 - t2) timePÊÇÓÃPythonдµÄModule£¬¶øtimeC¾ÍÊÇÓÃCдµÄÁË¡£¼ÆËãµÄÄÚÈݶ¼ÊÇÒ»ÑùµÄ¡£ #! /usr/bin/python #timeP.py def time(): for i in range(0,100000): x = 123498 y = 98082432 z = x * y ÔÚ¿´CµÄmodule֮ǰ¡£ÎÒÃÇÒªÏÈѧϰ¼¸¸ö»ù´¡ÖªÊ¶¡£Ê×ÏÈ£¬Ã¿Ò»¸ömodule¶¼Òª¸æËßPython Interpreterµ½µ×Õâ¸öÄ£¿éÓм¸¸öº¯Êý¡£Õâ¸öÊÇÓÉ"initMODULE_NAME"º¯ÊýÀ´ÊµÏֵ쬯äʵ¾ÍÊǰÑÒ»¸öList×÷Ϊ²ÎÊý´«¸øPython/C APIÀïµÄÒ»¸öÌØÊ⺯Êý×öµ½µÄ¡£ ÁíÍâΪÁ˽»»»Êý¾Ý£¬cµÄmoduleÀïµÄº¯ÊýÒªÒÔPyObject*×÷Ϊ·µ»ØÀàÐÍ£¬¼´Ê¹ÊDz»ÐèÒª·µ»ØÖµµÄ£¬Ò²Òª·µ»ØPy_None£¬¾ÍÊÇPythonÀïµÄNoneÀ²¡£°³¾ÍÊÇÒ»¿ªÊ¼Ã»ÓÐ×¢Ò⣬½á¹ûÒ»Ö±segmentation fault¡£ ×îºó£¬Ò»¶¨Òªinclude Python.h£¨·Ï»°£© #include #include "time_test.h" ///timeC.c /// the wrapper for time_test.c static PyObject* timeC_time() { time_test(); return Py_None; } static PyMethodDef timeCMethods[] = { {"time", timeC_time, METH_VARARGS, "Execute a shell command."}, {NULL, NULL, 0, NULL} /* Sentinel, end of list of functions*/ }; PyMODINIT_FUNC inittimeC() { Py_InitModule("timeC", timeCMethods); } Õâ¸ömoduleÆäʵÊÇÒ»¸öCµÄLibrary£¨¿âµÄÀý×Ó£¬Ã»ÓÐÕâôminiµÄ¿âÀ²£¬ºÇºÇ£©µÄwrapper¡£ÎÒ˳±ã°ÑCµÄLibraryµÄcodeÒ²ÌùÔÚÕâÀ #ifndef _TIME_TEST_H #define _TIME_TEST_H extern void time_test(); #endif #include "time_test.h" ///time_test.c void time_test() { int x = 123498; int y = 98082432; int z = 0; int i; for (i = 0 ; i < 100 ; i++) { z = x * y; } } int main() { time_test(); return 0; } ½ÓÏÂÀ´¸Ã±àÒëÁË£¨ÐèÒª±àÒëµÄÓïÑÔºÃÂé·³£¬:p£©¡£PythonÌṩÁ˱àÒëCµÄmoduleµÄ¼òµ¥·½·¨¡£¾ÍÊÇдһ¸ösetup½Å±¾£º #! /usr/bin/python from distutils.core import setup, Extension module1 = Extension('timeC', sources = ['timeC.c', 'time_test.c']) setup (name = 'PackageName', version = '1.0', description = 'This is a demo package', ext_modules = [module1]) Ö»ÒªÖ´ÐÐÒ»ÏÂ./setup.py build£¬¾Í¿ÉÒÔ±àÒëÁË¡£ ±àÒëºÃÁËÖ®ºó£¬°ÑÉú³ÉµÄ.soÎļþcopyµ½µ±Ç°Ä¿Â¼¡£RunÒ»ÏÂmain.py¿´¿´½á¹û¡£ÎҵĻúÆ÷ÊÇP4 1.8, RHEL4WS¡£½á¹ûÈçÏ£º Python module time: 4.386378 seconds C module time: 0.000432 seconds [ Last edited by csfn on 2008-12-29 at 19:54 ] |
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