Changeset 13964ef in mainline for kernel/generic/src/proc/thread.c

Timestamp:

2008-11-22T17:10:12Z (16 years ago)

Author:

Jiri Svoboda <jirik.svoboda@…>

Branches:

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

Children:

0aa1665

Parents:

2eb893b

Message:

Fix race that allowed Udebug to report THREAD_B events for threads already reported with THREAD_READ.

File:

• kernel/generic/src/proc/thread.c (modified) (1 diff)

kernel/generic/src/proc/thread.c

@@ -764 +764 @@
                          }
                 }
+#ifdef CONFIG_UDEBUG
+                /*
+                 * Generate udebug THREAD_B event and attach the thread.
+                 * This must be done atomically (with the debug locks held),
+                 * otherwise we would either miss some thread or receive
+                 * THREAD_B events for threads that already existed
+                 * and could be detected with THREAD_READ before.
+                 */
+                udebug_thread_b_event_attach(t, TASK);
+#else
                 thread_attach(t, TASK);
+#endif
                 thread_ready(t);
-
-#ifdef CONFIG_UDEBUG
-                /* Generate udebug THREAD_B event */
-                udebug_thread_b_event(t);
-#endif
 
                 return 0;