关于SHM_OPEN和SHM_UNLINK的使用问题关于SHM_OPEN和SHM_UNLINK的使用问题 C programming in the UNIX environment的编程手册,一般都会为进程间用共享内存的方法通信提供两组方法: 1. POSIX定义的: int shm_open(const char *name, int oflag, mode_t mode); int shm_unlink(const char *name); int ftruncate...
intoflag, mode_t mode);intshm_unlink(constchar*name);intftruncate(intfd, off_t length);2. SYSTEM V定义的intshmget(key_t key,intsize,intshmflg);void*shmat(intshmid,constvoid*shmaddr,intshmflg);intshmdt(constvoid*shmaddr);intshmctl(intshmid...
http://blog.csdn.net/laojing123/article/details/6109154POSIX 为创建、映射、同步和取消共享内存段提供五个入口点:shm_open():创建共享内存段或连接到现有的已命名内存段。这个系统调用返回一个文件描述符。shm_unlink():根据(
由于POSIX标准比较通用,一般建议使用该标准定义的方法集。 但是在使用shm_open和shm_unlink两个函数时,你可能遇到和我同样的问题,见如下代码。 该代码旨在测试你的系统是否支持POSIX定义的共享内存函数集。 /* This is just to test if the function is found in the libs. */ #include<stdio.h> #include<std...
Bug report Posix functions shm_open() and shm_unlink() take a null terminated C strings using PyUnicode_AsUTF8AndSize(path, NULL) which returns a pointer to char buffer which can include embedded null characters. When interpreted as C st...
#include <sys/types.h> #include <sys/mman.h> #include <fcntl.h> int shm_open(const char *path, int flags, mode_t mode); int shm_unlink(const char *path); DESCRIPTION The shm_open() system call opens (or optionally creates) a POSIX shared memory object named path. The flags arg...
shm_open() creates and opens a new, or opens an existing, POSIX shared memory object. A POSIX shared memory object is in effect a handle which can be used by unrelated processes tommap(2) the same region of shared memory. Theshm_unlink() function performs the converse operation, removing...
int shm_unlink(const char *name); 编译时要加库文件-lrt */ #define SHMNAME "shm_ram" #define OPEN_FLAG O_RDWR|O_CREAT #define OPEN_MODE 00777 #define FILE_SIZE 4096*4 int main(void) { int ret = -1; int fd = -1; char buf[4096] = {0}; ...
shm_open and shm_unlink interface for node.js. Contribute to Cloud-Automation/nodeshm development by creating an account on GitHub.
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