Changeset 2d5a54f3 in mainline for generic/include/ipc

Timestamp:

2006-03-16T00:25:50Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

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

Children:

2fb49101

Parents:

c23502d

Message:

Implemented callback IPC call (connect_to_me).

Location:

generic/include/ipc

Files:

• ipc.h (modified) (3 diffs)
• sysipc.h (moved) (moved from generic/include/ipc/ns.h ) (1 diff)

generic/include/ipc/ipc.h

@@ -69 +69 @@
 #define PHONE_NS              0
 
+/* System-specific methods - only through special syscalls
+ * These methods have special behaviour
+ */
+#define IPC_M_IAMCONNECTING   0
+/** Protocol for CONNECT - TO - ME 
+ *
+ * Calling process asks the callee to create a callback connection,
+ * so that it can start initiating new messages.
+ *
+ * The protocol for negotiating is as follows:
+ * - sys_connecttome - sends a message IPC_M_CONNECTTOME
+ * - sys_wait_for_call - upon receipt tries to allocate new phone
+ *                       - if it fails, responds with ELIMIT
+ *                     - passes call to userspace. If userspace
+ *                       responds with error, phone is deallocated and
+ *                       error is sent back to caller. Otherwise 
+ *                       the call is accepted and the response is sent back.
+ *                     - the allocated phoneid is passed to userspace as
+ *                       ARG3 of the call.
+ *                     - the caller obtains taskid of the called thread
+ */
+#define IPC_M_CONNECTTOME     1
+#define IPC_M_CONNECTMETO     2
+
+
+/* Well-known methods */
+#define IPC_M_FIRST_USER      512
+#define IPC_M_PING            512
+/* User methods */
+#define FIRST_USER_METHOD     1024
+
 #ifdef KERNEL
 
@@ -77 +108 @@
 #define IPC_MAX_PHONES  16
 
-
 typedef struct answerbox answerbox_t;
+typedef __native ipc_data_t[IPC_CALL_LEN];
 
 typedef struct {
@@ -85 +116 @@
         int flags;
         task_t *sender;
-        __native data[IPC_CALL_LEN];
+        ipc_data_t data;
 } call_t;
 
 struct answerbox {
         SPINLOCK_DECLARE(lock);
+
+        task_t *task;
 
         mutex_t mutex;

generic/include/ipc/sysipc.h

@@ -27 +27 @@
  */
 
-#ifndef __NS_H_
-#define __NS_H_
+#ifndef __SYSIPC_H__
+#define __SYSIPC_H__
 
-/* NameService methods */
-
-/** Ping name service */
-#define NS_PING   1
-
-
-#ifdef KERNEL
-
-#include <ipc/ipc.h>
-
-extern void ns_start(void);
+__native sys_ipc_call_sync_fast(__native phoneid, __native method, 
+                                __native arg1, __native *data);
+__native sys_ipc_call_sync(__native phoneid, __native *question, 
+                           __native *reply);
+__native sys_ipc_call_async_fast(__native phoneid, __native method, 
+                                 __native arg1, __native arg2);
+__native sys_ipc_call_async(__native phoneid, __native *data);
+__native sys_ipc_answer_fast(__native callid, __native retval, 
+                             __native arg1, __native arg2);
+__native sys_ipc_answer(__native callid, __native *data);
+__native sys_ipc_connect_to_me(__native phoneid, __native arg1,
+                               __native arg2, task_id_t *taskid);
+__native sys_ipc_wait_for_call(ipc_data_t *calldata, task_id_t *taskid,
+                               __native flags);
 
 #endif
-
-#endif