Changeset cd671c3 in mainline for kernel/generic/include/ipc

Timestamp:

2012-09-05T22:36:48Z (13 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

f1d5ef8

Parents:

239acce

Message:

Reference count call_t structures.
Add ipc_call_hold() and ipc_call_release().
Hold the forgotten call during the request_forget() callback.

Location:

kernel/generic/include/ipc

Files:

• ipc.h (modified) (2 diffs)
• sysipc_ops.h (modified) (1 diff)

kernel/generic/include/ipc/ipc.h

@@ -116 +116 @@
         link_t ta_link;
 
+        atomic_t refcnt;
+
         /** Answerbox link. */
         link_t ab_link;
@@ -166 +168 @@
 extern call_t *ipc_call_alloc(unsigned int);
 extern void ipc_call_free(call_t *);
+extern void ipc_call_hold(call_t *);
+extern void ipc_call_release(call_t *);
 
 extern int ipc_call(phone_t *, call_t *);

kernel/generic/include/ipc/sysipc_ops.h

@@ -55 +55 @@
          * Context:             caller
          * Caller alive:        guaranteed
-         * Races with:          request_process(), answer_cleanup()
+         * Races with:          request_process(), answer_cleanup(),
+         *                      _ipc_answer_free_call()
          * Invoked on:          all forgotten calls
          */