Changeset 79ae36dd in mainline for uspace/srv/bd/rd/rd.c

Timestamp:

2011-06-08T19:01:55Z (13 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

0eff68e

Parents:

764d71e

Message:

new async framework with integrated exchange tracking

• strict isolation between low-level IPC and high-level async framework with integrated exchange tracking
  • each IPC connection is represented by an async_sess_t structure
  • each IPC exchange is represented by an async_exch_t structure
  • exchange management is either based on atomic messages (EXCHANGE_ATOMIC), locking (EXCHANGE_SERIALIZE) or connection cloning (EXCHANGE_CLONE)
• async_obsolete: temporary compatibility layer to keep old async clients working (several pieces of code are currently broken, but only non-essential functionality)
• IPC_M_PHONE_HANGUP is now method no. 0 (for elegant boolean evaluation)
• IPC_M_DEBUG_ALL has been renamed to IPC_M_DEBUG
• IPC_M_PING has been removed (VFS protocol now has VFS_IN_PING)
• console routines in libc have been rewritten for better abstraction
• additional use for libc-private header files (FILE structure opaque to the client)
• various cstyle changes (typos, indentation, missing externs in header files, improved comments, etc.)

File:

• uspace/srv/bd/rd/rd.c (modified) (3 diffs)

uspace/srv/bd/rd/rd.c

@@ -123 +123 @@
         while (true) {
                 callid = async_get_call(&call);
-                switch (IPC_GET_IMETHOD(call)) {
-                case IPC_M_PHONE_HUNGUP:
+                
+                if (!IPC_GET_IMETHOD(call)) {
                         /*
                          * The other side has hung up.
-                         * Answer the message and exit the fibril.
+                         * Exit the fibril.
                          */
                         async_answer_0(callid, EOK);
                         return;
+                }
+                
+                switch (IPC_GET_IMETHOD(call)) {
                 case BD_READ_BLOCKS:
                         ba = MERGE_LOUP32(IPC_GET_ARG1(call),
@@ -243 +246 @@
                 return false;
         }
-
+        
         fibril_rwlock_initialize(&rd_lock);
         
@@ -258 +261 @@
         printf("%s: Accepting connections\n", NAME);
         async_manager();
-
+        
         /* Never reached */
         return 0;