pointer.h: Fix the rcu_cmpxchg_pointer documentation

[userspace-rcu.git] / urcu / compiler.h

diff --git a/urcu/compiler.h b/urcu/compiler.h
deleted file mode 100644 (file)
index ce19c74..0000000
--- a/urcu/compiler.h
+++ /dev/null
@@ -1,58 +0,0 @@
-#ifndef _URCU_COMPILER_H
-#define _URCU_COMPILER_H
-
-/*
- * compiler.h
- *
- * Compiler definitions.
- *
- * Copyright (c) 2009 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
- *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
- *
- * Permission is hereby granted to use or copy this program
- * for any purpose,  provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
- */
-
-#include <stddef.h>    /* for offsetof */
-
-#define likely(x)      __builtin_expect(!!(x), 1)
-#define unlikely(x)    __builtin_expect(!!(x), 0)
-
-#define        barrier()       asm volatile("" : : : "memory")
-
-/*
- * Instruct the compiler to perform only a single access to a variable
- * (prohibits merging and refetching). The compiler is also forbidden to reorder
- * successive instances of ACCESS_ONCE(), but only when the compiler is aware of
- * particular ordering. Compiler ordering can be ensured, for example, by
- * putting two ACCESS_ONCE() in separate C statements.
- *
- * This macro does absolutely -nothing- to prevent the CPU from reordering,
- * merging, or refetching absolutely anything at any time.  Its main intended
- * use is to mediate communication between process-level code and irq/NMI
- * handlers, all running on the same CPU.
- */
-#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
-
-#ifndef max
-#define max(a,b) ((a)>(b)?(a):(b))
-#endif
-
-#ifndef min
-#define min(a,b) ((a)<(b)?(a):(b))
-#endif
-
-#if defined(__SIZEOF_LONG__)
-#define BITS_PER_LONG  (__SIZEOF_LONG__ * 8)
-#elif defined(_LP64)
-#define BITS_PER_LONG  64
-#else
-#define BITS_PER_LONG  32
-#endif
-
-#endif /* _URCU_COMPILER_H */