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Diffstat (limited to '00_blog/00035_Programming/00010_IPC')
| -rw-r--r-- | 00_blog/00035_Programming/00010_IPC/.index.md.swp | bin | 0 -> 12288 bytes | |||
| -rw-r--r-- | 00_blog/00035_Programming/00010_IPC/index.md | 24 |
2 files changed, 24 insertions, 0 deletions
diff --git a/00_blog/00035_Programming/00010_IPC/.index.md.swp b/00_blog/00035_Programming/00010_IPC/.index.md.swp Binary files differnew file mode 100644 index 0000000..87e0eaa --- /dev/null +++ b/00_blog/00035_Programming/00010_IPC/.index.md.swp diff --git a/00_blog/00035_Programming/00010_IPC/index.md b/00_blog/00035_Programming/00010_IPC/index.md new file mode 100644 index 0000000..e42e38f --- /dev/null +++ b/00_blog/00035_Programming/00010_IPC/index.md @@ -0,0 +1,24 @@ +# Inter Process Communication + March 14, 2018 + +We can attach nicely to same memory segment from 2 different processes: + +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ {.c .numberLines} +// ipc via shared mem +// attach to shared memory; +key_t my_ftok = ftok("~/surf-webext-dom-shared-mem",'a'); + +int mem_seg=shmget(my_ftok,1024*1024,IPC_CREAT|0660); +if(mem_seg==-1) +{ +g_print("shmget failed: %s\n",strerror(errno)); +} + +shared_buf=shmat(mem_seg,NULL,0); +if(shared_buf==(void*)-1) +{ +g_print("shmat failed: %s\n",strerror(errno)); +} +g_print("attached to shared memory.\n"); +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + |