new stuff and sort stuff

2 files changed, 24 insertions, 0 deletions

diff --git a/00_blog/00035_Programming/00020_IPC/.index.md.swp b/00_blog/00035_Programming/00020_IPC/.index.md.swp
new file mode 100644
index 0000000..87e0eaa
--- /dev/null
+++ b/00_blog/00035_Programming/00020_IPC/.index.md.swp
diff --git a/00_blog/00035_Programming/00020_IPC/index.md b/00_blog/00035_Programming/00020_IPC/index.md
new file mode 100644
index 0000000..e42e38f
--- /dev/null
+++ b/00_blog/00035_Programming/00020_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");
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+