netdev-dpdk: fix mbuf leaks

[cascardo/ovs.git] / lib / compiler.h

diff --git a/lib/compiler.h b/lib/compiler.h
index f3cbe96..9e44d46 100644 (file)
--- a/lib/compiler.h
+++ b/lib/compiler.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,80 +17,28 @@
 #ifndef COMPILER_H
 #define COMPILER_H 1
 
+#include "openvswitch/compiler.h"
+
 #if __GNUC__ && !__CHECKER__
-#define NO_RETURN __attribute__((__noreturn__))
-#define OVS_UNUSED __attribute__((__unused__))
-#define PRINTF_FORMAT(FMT, ARG1) __attribute__((__format__(printf, FMT, ARG1)))
 #define STRFTIME_FORMAT(FMT) __attribute__((__format__(__strftime__, FMT, 0)))
 #define MALLOC_LIKE __attribute__((__malloc__))
 #define ALWAYS_INLINE __attribute__((always_inline))
-#define WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
 #define SENTINEL(N) __attribute__((sentinel(N)))
-#define OVS_LIKELY(CONDITION) __builtin_expect(!!(CONDITION), 1)
-#define OVS_UNLIKELY(CONDITION) __builtin_expect(!!(CONDITION), 0)
 #else
-#define NO_RETURN
-#define OVS_UNUSED
-#define PRINTF_FORMAT(FMT, ARG1)
 #define STRFTIME_FORMAT(FMT)
 #define MALLOC_LIKE
 #define ALWAYS_INLINE
-#define WARN_UNUSED_RESULT
 #define SENTINEL(N)
-#define OVS_LIKELY(CONDITION) (!!(CONDITION))
-#define OVS_UNLIKELY(CONDITION) (!!(CONDITION))
 #endif
 
-#ifdef __CHECKER__
-/* "sparse" annotations for mutexes and mutex-like constructs.
- *
- * In a function prototype, OVS_ACQUIRES(MUTEX) indicates that the function
- * must be called without MUTEX acquired and that it returns with MUTEX
- * acquired.  OVS_RELEASES(MUTEX) indicates the reverse.  OVS_MUST_HOLD
- * indicates that the function must be called with MUTEX acquired by the
- * caller and that the function does not release MUTEX.
- *
- * In practice, sparse ignores the MUTEX argument.  It need not even be a
- * valid expression.  It is meant to indicate to human readers what mutex is
- * being acquired.
- *
- * Since sparse ignores MUTEX, it need not be an actual mutex.  It can be
- * any construct on which paired acquire and release semantics make sense:
- * read/write locks, temporary memory allocations, whatever.
- *
- * OVS_ACQUIRE, OVS_RELEASE, and OVS_HOLDS are suitable for use within macros,
- * where there is no function prototype to annotate. */
-#define OVS_ACQUIRES(MUTEX) __attribute__((context(MUTEX, 0, 1)))
-#define OVS_RELEASES(MUTEX) __attribute__((context(MUTEX, 1, 0)))
-#define OVS_MUST_HOLD(MUTEX) __attribute__((context(MUTEX, 1, 1)))
-#define OVS_ACQUIRE(MUTEX) __context__(MUTEX, 0, 1)
-#define OVS_RELEASE(MUTEX) __context__(MUTEX, 1, 0)
-#define OVS_HOLDS(MUTEX) __context__(MUTEX, 1, 1)
-#else
-#define OVS_ACQUIRES(MUTEX)
-#define OVS_RELEASES(MUTEX)
-#define OVS_MUST_HOLD(MUTEX)
-#define OVS_ACQUIRE(MUTEX)
-#define OVS_RELEASE(MUTEX)
-#define OVS_HOLDS(MUTEX)
-#endif
-
-/* ISO C says that a C implementation may choose any integer type for an enum
- * that is sufficient to hold all of its values.  Common ABIs (such as the
- * System V ABI used on i386 GNU/Linux) always use a full-sized "int", even
- * when a smaller type would suffice.
- *
- * In GNU C, "enum __attribute__((packed)) name { ... }" defines 'name' as an
- * enum compatible with a type that is no bigger than necessary.  This is the
- * intended use of OVS_PACKED_ENUM.
- *
- * OVS_PACKED_ENUM is intended for use only as a space optimization, since it
- * only works with GCC.  That means that it must not be used in wire protocols
- * or otherwise exposed outside of a single process. */
-#if __GNUC__ && !__CHECKER__
-#define OVS_PACKED_ENUM __attribute__((__packed__))
+/* Output a message (not an error) while compiling without failing the
+ * compilation process */
+#if HAVE_PRAGMA_MESSAGE
+#define DO_PRAGMA(x) _Pragma(#x)
+#define BUILD_MESSAGE(x) \
+    DO_PRAGMA(message(x))
 #else
-#define OVS_PACKED_ENUM
+#define BUILD_MESSAGE(x)
 #endif
 
 #endif /* compiler.h */