Changeset 632 for soft/giet_vm/giet_common/kernel_locks.h

Timestamp:

Jul 18, 2015, 3:18:32 PM (9 years ago)

Author:

alain

Message:

Introduce two new atomic read-the-write functions, that can be used
to set or reset a bit field in a shared 32 bits word:

_atomic_or()
_atpmic_and()

File:

• soft/giet_vm/giet_common/kernel_locks.h (modified) (2 diffs)

soft/giet_vm/giet_common/kernel_locks.h

@@ -13 +13 @@
 
 #include "hard_config.h"
+
+
+//////////////////////////////////////////////////////////////////////////////
+//      Atomic access functions using LL/SC instructions
+//////////////////////////////////////////////////////////////////////////////
+
+extern unsigned int _atomic_increment( unsigned int* ptr,
+                                       int  increment );
+
+extern void _atomic_or( unsigned int* ptr,
+                        unsigned int  mask );
+
+extern void _atomic_and( unsigned int* ptr,
+                         unsigned int  mask );
 
 //////////////////////////////////////////////////////////////////////////////
@@ -38 +52 @@
     unsigned int padding[14];    // for 64 bytes alignment
 } spin_lock_t;
-
-extern unsigned int _atomic_increment( unsigned int* ptr,
-                                       int  increment );
 
 extern void _spin_lock_init( spin_lock_t* lock );