Changeset 43ac0cc in mainline for kernel/generic/src/proc/thread.c

Timestamp:

2011-06-13T18:53:42Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

9934f7d

Parents:

e8a69913

Message:

More lightweight implementation of delay() in kernel.

File:

• kernel/generic/src/proc/thread.c (modified) (2 diffs)

kernel/generic/src/proc/thread.c

@@ -322 +322 @@
         thread->cpu = NULL;
         thread->flags = flags;
+        thread->nomigrate = 0;
         thread->state = Entering;
         
@@ -482 +483 @@
         /* Not reached */
         while (true);
+}
+
+/** Prevent the current thread from being migrated to another processor. */
+void thread_migration_disable(void)
+{
+        ASSERT(THREAD);
+
+        THREAD->nomigrate++;
+}
+
+/** Allow the current thread to be migrated to another processor. */
+void thread_migration_enable(void)
+{
+        ASSERT(THREAD);
+        ASSERT(THREAD->nomigrate > 0);
+
+        THREAD->nomigrate--;
 }