* \code head == begin && tail == end \endcode
*/
-/*
- * $Log$
- * Revision 1.12 2004/08/02 20:20:29 aleph
- * Merge from project_ks
- *
- * Revision 1.11 2004/07/30 14:15:53 rasky
- * Nuovo supporto unificato per detect della CPU
- *
- * Revision 1.10 2004/07/29 22:57:09 bernie
- * Doxygen fix.
- *
- * Revision 1.9 2004/07/20 23:54:27 bernie
- * fifo_flush_locked(): New function;
- * Revamp documentation.
- *
- * Revision 1.8 2004/07/20 23:47:39 bernie
- * Finally remove redundant protos.
- *
- * Revision 1.7 2004/07/20 23:46:29 bernie
- * Finally remove redundant protos.
- *
- * Revision 1.6 2004/06/06 17:18:04 bernie
- * Remove redundant declaration of fifo_isempty_locked().
- *
- * Revision 1.5 2004/06/06 16:50:35 bernie
- * Import fixes for race conditions from project_ks.
- *
- * Revision 1.4 2004/06/06 16:11:17 bernie
- * Protect MetroWerks specific pragmas with #ifdef's
- */
+/*#*
+ *#* $Log$
+ *#* Revision 1.15 2004/08/29 22:05:16 bernie
+ *#* Rename BITS_PER_PTR to CPU_BITS_PER_PTR.
+ *#*
+ *#* Revision 1.14 2004/08/25 14:12:09 rasky
+ *#* Aggiornato il comment block dei log RCS
+ *#*
+ *#* Revision 1.13 2004/08/24 13:16:11 bernie
+ *#* Add type-size definitions for preprocessor.
+ *#*
+ *#* Revision 1.12 2004/08/02 20:20:29 aleph
+ *#* Merge from project_ks
+ *#*
+ *#* Revision 1.11 2004/07/30 14:15:53 rasky
+ *#* Nuovo supporto unificato per detect della CPU
+ *#*
+ *#* Revision 1.10 2004/07/29 22:57:09 bernie
+ *#* Doxygen fix.
+ *#*
+ *#* Revision 1.9 2004/07/20 23:54:27 bernie
+ *#* fifo_flush_locked(): New function;
+ *#* Revamp documentation.
+ *#*
+ *#* Revision 1.8 2004/07/20 23:47:39 bernie
+ *#* Finally remove redundant protos.
+ *#*
+ *#* Revision 1.7 2004/07/20 23:46:29 bernie
+ *#* Finally remove redundant protos.
+ *#*
+ *#* Revision 1.6 2004/06/06 17:18:04 bernie
+ *#* Remove redundant declaration of fifo_isempty_locked().
+ *#*
+ *#* Revision 1.5 2004/06/06 16:50:35 bernie
+ *#* Import fixes for race conditions from project_ks.
+ *#*
+ *#* Revision 1.4 2004/06/06 16:11:17 bernie
+ *#* Protect MetroWerks specific pragmas with #ifdef's
+ *#*/
#ifndef MWARE_FIFO_H
#define MWARE_FIFO_H
}
-#if !CPU_AVR
+#if CPU_REG_BITS >= CPU_BITS_PER_PTR
- /* No tricks needed on 16/32bit CPUs */
-# define fifo_isempty_locked(fb) fifo_isempty((fb))
-# define fifo_push_locked(fb, c) fifo_push((fb), (c))
-# define fifo_flush_locked(fb) fifo_flush((fb))
+ /*
+ * 16/32bit CPUs that can update a pointer with a single write
+ * operation, no need to disable interrupts.
+ */
+ #define fifo_isempty_locked(fb) fifo_isempty((fb))
+ #define fifo_push_locked(fb, c) fifo_push((fb), (c))
+ #define fifo_flush_locked(fb) fifo_flush((fb))
-#else /* !CPU_AVR */
+#else /* CPU_REG_BITS < CPU_BITS_PER_PTR */
/*!
* Similar to fifo_isempty(), but with stronger guarantees for
return result;
}
+
/*!
* Similar to fifo_push(), but with stronger guarantees for
* concurrent access between user and interrupt code.
ENABLE_IRQRESTORE(flags);
}
+
/*!
* Similar to fifo_flush(), but with stronger guarantees for
* concurrent access between user and interrupt code.
ENABLE_IRQRESTORE(flags);
}
-#endif /* !CPU_AVR */
+#endif /* CPU_REG_BITS < BITS_PER_PTR */
/*!