Changeset 0f0f8bc in mainline for uspace/lib/drv/include/ddf/driver.h

Timestamp:

2011-08-29T18:46:37Z (13 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

4d94002d

Parents:

8cc4ddb

Message:

Use reference counting to synchronize freeing of ddf_fun_t and ddf_dev_t.
This ensures that a function structure (device structure, potentially)
passed as argument to a driver entry point is not deallocated until
control returns from that entry point. We still need similar guarantee
for driver data.

File:

• uspace/lib/drv/include/ddf/driver.h (modified) (2 diffs)

uspace/lib/drv/include/ddf/driver.h

@@ -81 +81 @@
          */
         devman_handle_t handle;
+        /** Reference count */
+        atomic_t refcnt;
         
         /**
@@ -104 +106 @@
         /** Function indentifier (asigned by device manager) */
         devman_handle_t handle;
+        /** Reference count */
+        atomic_t refcnt;
         
         /** Device which this function belogs to */