Changeset 79ae36dd in mainline for uspace/srv/vfs/vfs_lookup.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/vfs/vfs_lookup.c (modified) (4 diffs)

uspace/srv/vfs/vfs_lookup.c

@@ -159 +159 @@
 
         ipc_call_t answer;
-        int phone = vfs_grab_phone(root->fs_handle);
-        aid_t req = async_send_5(phone, VFS_OUT_LOOKUP, (sysarg_t) first,
+        async_exch_t *exch = vfs_exchange_grab(root->fs_handle);
+        aid_t req = async_send_5(exch, VFS_OUT_LOOKUP, (sysarg_t) first,
             (sysarg_t) (first + len - 1) % PLB_SIZE,
             (sysarg_t) root->devmap_handle, (sysarg_t) lflag, (sysarg_t) index,
@@ -167 +167 @@
         sysarg_t rc;
         async_wait_for(req, &rc);
-        vfs_release_phone(root->fs_handle, phone);
+        vfs_exchange_release(exch);
         
         fibril_mutex_lock(&plb_mutex);
@@ -208 +208 @@
 int vfs_open_node_internal(vfs_lookup_res_t *result)
 {
-        int phone = vfs_grab_phone(result->triplet.fs_handle);
+        async_exch_t *exch = vfs_exchange_grab(result->triplet.fs_handle);
         
         ipc_call_t answer;
-        aid_t req = async_send_2(phone, VFS_OUT_OPEN_NODE,
+        aid_t req = async_send_2(exch, VFS_OUT_OPEN_NODE,
             (sysarg_t) result->triplet.devmap_handle,
             (sysarg_t) result->triplet.index, &answer);
@@ -217 +217 @@
         sysarg_t rc;
         async_wait_for(req, &rc);
-        vfs_release_phone(result->triplet.fs_handle, phone);
+        vfs_exchange_release(exch);
         
         if (rc == EOK) {