Changeset 79ae36dd in mainline for uspace/drv/vhc/hub.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/drv/vhc/hub.c (modified) (4 diffs)

uspace/drv/vhc/hub.c

@@ -33 +33 @@
  * @brief Virtual USB hub.
  */
+
 #include <usb/classes/classes.h>
 #include <usbvirt/device.h>
 #include <errno.h>
+#include <async.h>
 #include <str_error.h>
 #include <stdlib.h>
@@ -44 +46 @@
 
 #include "hub.h"
-//#include "hub/virthub.h"
 #include "vhcd.h"
 #include "conn.h"
@@ -97 +98 @@
          * Wait until parent device is properly initialized.
          */
-        int phone;
+        async_sess_t *sess;
         do {
-                phone = devman_device_connect(hc_dev->handle, 0);
-        } while (phone < 0);
-        async_hangup(phone);
+                sess = devman_device_connect(EXCHANGE_SERIALIZE, hc_dev->handle, 0);
+        } while (!sess);
+        async_hangup(sess);
 
         int rc;
@@ -129 +130 @@
         return 0;
 }
-        
 
 /**