gcc/libcilkrts/include/cilk/common.h
Rainer Orth 954d457405 Only use visibility if supported
* configure.ac (libcilkrts_cv_have_attribute_visibility): Check
	for __attribute__((visibility)).
	* configure: Regenerate.
	* include/cilk/common.h (CILK_EXPORT, CILK_EXPORT_DATA): Only use
	__attribute__((visibility)) if HAVE_ATTRIBUTE_VISIBILITY.

From-SVN: r205254
2013-11-22 11:44:56 +00:00

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/** common.h
*
* @copyright
* Copyright (C) 2010-2013, Intel Corporation
* All rights reserved.
*
* @copyright
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* @copyright
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/** @file common.h
*
* @brief Defines common macros and structures used by the Intel Cilk Plus
* runtime.
*
* @ingroup common
*/
/** @defgroup common Common Definitions
* Macro, structure, and class definitions used elsewhere in the runtime.
* @{
*/
#ifndef INCLUDED_CILK_COMMON
#define INCLUDED_CILK_COMMON
#ifdef __cplusplus
/** Namespace for all Cilk definitions that can be included in user code.
*/
namespace cilk {
/** Namespace for definitions that are primarily intended for use
* in other Cilk definitions.
*/
namespace internal {}
}
#endif
/** Cilk library version = 1.01
*/
#define CILK_LIBRARY_VERSION 102
#ifdef __cplusplus
# include <cassert>
#else
# include <assert.h>
#endif
/**
* Prefix standard library function and type names with __STDNS in order to
* get correct lookup in both C and C++.
*/
#ifdef __cplusplus
# define __STDNS std::
#else
# define __STDNS
#endif
/**
* @def CILK_EXPORT
* Define export of runtime functions from shared library.
* Should be exported only from cilkrts*.dll/cilkrts*.so
* @def CILK_EXPORT_DATA
* Define export of runtime data from shared library.
*/
#ifdef _WIN32
# ifdef IN_CILK_RUNTIME
# define CILK_EXPORT __declspec(dllexport)
# define CILK_EXPORT_DATA __declspec(dllexport)
# else
# define CILK_EXPORT __declspec(dllimport)
# define CILK_EXPORT_DATA __declspec(dllimport)
# endif /* IN_CILK_RUNTIME */
#elif defined(__CYGWIN__) || defined(__APPLE__) || defined(_DARWIN_C_SOURCE)
# define CILK_EXPORT /* nothing */
# define CILK_EXPORT_DATA /* nothing */
#else /* Unix/gcc */
# if defined(IN_CILK_RUNTIME) && defined(HAVE_ATTRIBUTE_VISIBILITY)
# define CILK_EXPORT __attribute__((visibility("protected")))
# define CILK_EXPORT_DATA __attribute__((visibility("protected")))
# else
# define CILK_EXPORT /* nothing */
# define CILK_EXPORT_DATA /* nothing */
# endif /* IN_CILK_RUNTIME */
#endif /* Unix/gcc */
/**
* @def __CILKRTS_BEGIN_EXTERN_C
* Macro to denote the start of a section in which all names have "C" linkage.
* That is, none of the names are to be mangled.
* @see __CILKRTS_END_EXTERN_C
* @see __CILKRTS_EXTERN_C
*
* @def __CILKRTS_END_EXTERN_C
* Macro to denote the end of a section in which all names have "C" linkage.
* That is, none of the names are to be mangled.
* @see __CILKRTS_BEGIN_EXTERN_C
* @see __CILKRTS_EXTERN_C
*
* @def __CILKRTS_EXTERN_C
* Macro to prefix a single definition which has "C" linkage.
* That is, the defined name is not to be mangled.
* @see __CILKRTS_BEGIN_EXTERN_C
* @see __CILKRTS_END_EXTERN_C
*/
#ifdef __cplusplus
# define __CILKRTS_BEGIN_EXTERN_C extern "C" {
# define __CILKRTS_END_EXTERN_C }
# define __CILKRTS_EXTERN_C extern "C"
#else
# define __CILKRTS_BEGIN_EXTERN_C
# define __CILKRTS_END_EXTERN_C
# define __CILKRTS_EXTERN_C
#endif
/**
* OS-independent macro to specify a function which is known to not throw
* an exception.
*/
#ifdef __cplusplus
# ifdef _WIN32
# define __CILKRTS_NOTHROW __declspec(nothrow)
# else /* Unix/gcc */
# define __CILKRTS_NOTHROW __attribute__((nothrow))
# endif /* Unix/gcc */
#else
# define __CILKRTS_NOTHROW /* nothing */
#endif /* __cplusplus */
/** Cache alignment. (Good enough for most architectures.)
*/
#define __CILKRTS_CACHE_LINE__ 64
/**
* Macro to specify alignment of a data member in a structure.
* Because of the way that gccs alignment attribute is defined, @a n must
* be a numeric literal, not just a compile-time constant expression.
*/
#ifdef _WIN32
# define CILK_ALIGNAS(n) __declspec(align(n))
#else /* Unix/gcc */
# define CILK_ALIGNAS(n) __attribute__((__aligned__(n)))
#endif
/**
* Macro to specify cache-line alignment of a data member in a structure.
*/
#define __CILKRTS_CACHE_ALIGN CILK_ALIGNAS(__CILKRTS_CACHE_LINE__)
/**
* Macro to specify a class as being at least as strictly aligned as some
* type on Windows. gcc does not provide a way of doing this, so on Unix,
* this just specifies the largest natural type alignment. Put the macro
* between the `class` keyword and the class name:
*
* class CILK_ALIGNAS_TYPE(foo) bar { ... };
*/
#ifdef _WIN32
# define CILK_ALIGNAS_TYPE(t) __declspec(align(__alignof(t)))
#else /* Unix/gcc */
# define CILK_ALIGNAS_TYPE(t) __attribute__((__aligned__))
#endif
/**
* @def CILK_API(RET_TYPE)
* A function called explicitly by the programmer.
* @def CILK_ABI(RET_TYPE)
* A function called by compiler-generated code.
* @def CILK_ABI_THROWS(RET_TYPE)
* An ABI function that may throw an exception
*
* Even when these are the same definitions, they should be separate macros so
* that they can be easily found in the code.
*/
#ifdef _WIN32
# define CILK_API(RET_TYPE) CILK_EXPORT RET_TYPE __CILKRTS_NOTHROW __cdecl
# define CILK_ABI(RET_TYPE) CILK_EXPORT RET_TYPE __CILKRTS_NOTHROW __cdecl
# define CILK_ABI_THROWS(RET_TYPE) CILK_EXPORT RET_TYPE __cdecl
#else
# define CILK_API(RET_TYPE) CILK_EXPORT RET_TYPE __CILKRTS_NOTHROW
# define CILK_ABI(RET_TYPE) CILK_EXPORT RET_TYPE __CILKRTS_NOTHROW
# define CILK_ABI_THROWS(RET_TYPE) CILK_EXPORT RET_TYPE
#endif
/**
* __CILKRTS_ASSERT should be defined for debugging only, otherwise it
* interferes with vectorization. Since NDEBUG is not reliable (it must be
* set by the user), we must use a platform-specific detection of debug mode.
*/
#if defined(_WIN32) && defined(_DEBUG)
/* Windows debug */
# define __CILKRTS_ASSERT(e) assert(e)
#elif (! defined(_WIN32)) && ! defined(__OPTIMIZE__)
/* Unix non-optimized */
# define __CILKRTS_ASSERT(e) assert(e)
#elif defined __cplusplus
/* C++ non-debug */
# define __CILKRTS_ASSERT(e) static_cast<void>(0)
#else
/* C non-debug */
# define __CILKRTS_ASSERT(e) ((void) 0)
#endif
/**
* OS-independent macro to specify a function that should be inlined
*/
#ifdef __cpluspus
// C++
# define __CILKRTS_INLINE inline
#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
// C99
# define __CILKRTS_INLINE static inline
#elif defined(_MSC_VER)
// C89 on Windows
# define __CILKRTS_INLINE __inline
#else
// C89 on GCC-compatible systems
# define __CILKRTS_INLINE extern __inline__
#endif
/**
* Functions marked as CILK_EXPORT_AND_INLINE have both
* inline versions defined in the Cilk API, as well as
* non-inlined versions that are exported (for
* compatibility with previous versions that did not
* inline the functions).
*/
#ifdef COMPILING_CILK_API_FUNCTIONS
# define CILK_EXPORT_AND_INLINE CILK_EXPORT
#else
# define CILK_EXPORT_AND_INLINE __CILKRTS_INLINE
#endif
/**
* Try to determine if compiler supports rvalue references.
*/
#if defined(__cplusplus) && !defined(__CILKRTS_RVALUE_REFERENCES)
# if __cplusplus >= 201103L // C++11
# define __CILKRTS_RVALUE_REFERENCES 1
# elif defined(__GXX_EXPERIMENTAL_CXX0X__)
# define __CILKRTS_RVALUE_REFERENCES 1
# elif __cplusplus >= 199711L && __cplusplus < 201103L
// Compiler recognizes a language version prior to C++11
# elif __INTEL_COMPILER == 1200 && defined(__STDC_HOSTED__)
// Intel compiler version 12.0
// __cplusplus has a non-standard definition. In the absence of a
// proper definition, look for the C++0x macro, __STDC_HOSTED__.
# define __CILKRTS_RVALUE_REFERENCES 1
# elif __INTEL_COMPILER > 1200 && defined(CHAR16T)
// Intel compiler version >= 12.1
// __cplusplus has a non-standard definition. In the absence of a
// proper definition, look for the Intel macro, CHAR16T
# define __CILKRTS_RVALUE_REFERENCES 1
# endif
#endif
/*
* Include stdint.h to define the standard integer types.
*
* Unfortunately Microsoft doesn't provide stdint.h until Visual Studio 2010,
* so use our own definitions until those are available
*/
#if ! defined(_MSC_VER) || (_MSC_VER >= 1600)
# include <stdint.h>
#else
# ifndef __MS_STDINT_TYPES_DEFINED__
# define __MS_STDINT_TYPES_DEFINED__
typedef signed char int8_t;
typedef short int16_t;
typedef int int32_t;
typedef __int64 int64_t;
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned int uint32_t;
typedef unsigned __int64 uint64_t;
# endif /* __MS_STDINT_TYPES_DEFINED__ */
#endif /* ! defined(_MSC_VER) || (_MSC_VER >= 1600) */
/**
* @brief Application Binary Interface version of the Cilk runtime library.
*
* The ABI version is determined by the compiler used. An object file
* compiled with a higher ABI version is not compatible with a library that is
* compiled with a lower ABI version. An object file compiled with a lower
* ABI version, however, can be used with a library compiled with a higher ABI
* version unless otherwise stated.
*/
#ifndef __CILKRTS_ABI_VERSION
# ifdef IN_CILK_RUNTIME
# define __CILKRTS_ABI_VERSION 1
# elif __INTEL_COMPILER > 1200
// Intel compiler version >= 12.1
# define __CILKRTS_ABI_VERSION 1
# else
// Compiler does not support ABI version 1
// (Non-Intel compiler or Intel compiler prior to version 12.1).
# define __CILKRTS_ABI_VERSION 0
# endif
#endif
// These structs are exported because the inlining of
// the internal version of API methods require a worker
// structure as parameter.
__CILKRTS_BEGIN_EXTERN_C
/// Worker struct, exported for inlined API methods
/// @ingroup api
struct __cilkrts_worker;
/// Worker struct, exported for inlined API methods
/// @ingroup api
typedef struct __cilkrts_worker __cilkrts_worker;
/// Worker struct pointer, exported for inlined API methods
/// @ingroup api
typedef struct __cilkrts_worker *__cilkrts_worker_ptr;
/// Fetch the worker out of TLS.
CILK_ABI(__cilkrts_worker_ptr) __cilkrts_get_tls_worker(void);
/// void *, defined to work around complaints from the compiler
/// about using __declspec(nothrow) after the "void *" return type
typedef void * __cilkrts_void_ptr;
__CILKRTS_END_EXTERN_C
#if __CILKRTS_ABI_VERSION >= 1
// Pedigree API is available only for compilers that use ABI version >= 1.
/** Pedigree information kept in the worker and stack frame.
* @ingroup api
*/
typedef struct __cilkrts_pedigree
{
/** Rank at start of spawn helper. Saved rank for spawning functions */
uint64_t rank;
/** Link to next in chain */
const struct __cilkrts_pedigree *parent;
} __cilkrts_pedigree;
#endif // __CILKRTS_ABI_VERSION >= 1
/// @}
#endif /* INCLUDED_CILK_COMMON */