michael@0: /* Pixman uses some non-standard compiler features. This file ensures
michael@0:  * they exist
michael@0:  *
michael@0:  * The features are:
michael@0:  *
michael@0:  *    FUNC	     must be defined to expand to the current function
michael@0:  *    PIXMAN_EXPORT  should be defined to whatever is required to
michael@0:  *                   export functions from a shared library
michael@0:  *    limits	     limits for various types must be defined
michael@0:  *    inline         must be defined
michael@0:  *    force_inline   must be defined
michael@0:  */
michael@0: #if defined (__GNUC__)
michael@0: #  define FUNC     ((const char*) (__PRETTY_FUNCTION__))
michael@0: #elif defined (__sun) || (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
michael@0: #  define FUNC     ((const char*) (__func__))
michael@0: #else
michael@0: #  define FUNC     ((const char*) ("???"))
michael@0: #endif
michael@0: 
michael@0: #if defined (__GNUC__)
michael@0: #  define MAYBE_UNUSED  __attribute__((unused))
michael@0: #else
michael@0: #  define MAYBE_UNUSED
michael@0: #endif
michael@0: 
michael@0: #ifndef INT16_MIN
michael@0: # define INT16_MIN              (-32767-1)
michael@0: #endif
michael@0: 
michael@0: #ifndef INT16_MAX
michael@0: # define INT16_MAX              (32767)
michael@0: #endif
michael@0: 
michael@0: #ifndef INT32_MIN
michael@0: # define INT32_MIN              (-2147483647-1)
michael@0: #endif
michael@0: 
michael@0: #ifndef INT32_MAX
michael@0: # define INT32_MAX              (2147483647)
michael@0: #endif
michael@0: 
michael@0: #ifndef UINT32_MIN
michael@0: # define UINT32_MIN             (0)
michael@0: #endif
michael@0: 
michael@0: #ifndef UINT32_MAX
michael@0: # define UINT32_MAX             (4294967295U)
michael@0: #endif
michael@0: 
michael@0: #ifndef INT64_MIN
michael@0: # define INT64_MIN              (-9223372036854775807-1)
michael@0: #endif
michael@0: 
michael@0: #ifndef INT64_MAX
michael@0: # define INT64_MAX              (9223372036854775807)
michael@0: #endif
michael@0: 
michael@0: #ifndef SIZE_MAX
michael@0: # define SIZE_MAX               ((size_t)-1)
michael@0: #endif
michael@0: 
michael@0: 
michael@0: #ifndef M_PI
michael@0: # define M_PI			3.14159265358979323846
michael@0: #endif
michael@0: 
michael@0: #ifdef _MSC_VER
michael@0: /* 'inline' is available only in C++ in MSVC */
michael@0: #   define inline __inline
michael@0: #   define force_inline __forceinline
michael@0: #   define noinline __declspec(noinline)
michael@0: #elif defined __GNUC__ || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
michael@0: #   define inline __inline__
michael@0: #   define force_inline __inline__ __attribute__ ((__always_inline__))
michael@0: #   define noinline __attribute__((noinline))
michael@0: #else
michael@0: #   ifndef force_inline
michael@0: #      define force_inline inline
michael@0: #   endif
michael@0: #   ifndef noinline
michael@0: #      define noinline
michael@0: #   endif
michael@0: #endif
michael@0: 
michael@0: /* In libxul builds we don't ever want to export pixman symbols */
michael@0: #if 1
michael@0: #include "prcpucfg.h"
michael@0: 
michael@0: #ifdef HAVE_VISIBILITY_HIDDEN_ATTRIBUTE
michael@0: #define CVISIBILITY_HIDDEN __attribute__((visibility("hidden")))
michael@0: #elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
michael@0: #define CVISIBILITY_HIDDEN __hidden
michael@0: #else
michael@0: #define CVISIBILITY_HIDDEN
michael@0: #endif
michael@0: 
michael@0: /* In libxul builds we don't ever want to export cairo symbols */
michael@0: #define PIXMAN_EXPORT extern CVISIBILITY_HIDDEN
michael@0: 
michael@0: #else
michael@0: 
michael@0: /* GCC visibility */
michael@0: #if defined(__GNUC__) && __GNUC__ >= 4 && !defined(_WIN32)
michael@0: #   define PIXMAN_EXPORT __attribute__ ((visibility("default")))
michael@0: /* Sun Studio 8 visibility */
michael@0: #elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
michael@0: #   define PIXMAN_EXPORT __global
michael@0: #else
michael@0: #   define PIXMAN_EXPORT
michael@0: #endif
michael@0: 
michael@0: #endif
michael@0: 
michael@0: /* member offsets */
michael@0: #define CONTAINER_OF(type, member, data)				\
michael@0:     ((type *)(((uint8_t *)data) - offsetof (type, member)))
michael@0: 
michael@0: /* TLS */
michael@0: #if defined(PIXMAN_NO_TLS)
michael@0: 
michael@0: #   define PIXMAN_DEFINE_THREAD_LOCAL(type, name)			\
michael@0:     static type name
michael@0: #   define PIXMAN_GET_THREAD_LOCAL(name)				\
michael@0:     (&name)
michael@0: 
michael@0: #elif defined(TLS)
michael@0: 
michael@0: #   define PIXMAN_DEFINE_THREAD_LOCAL(type, name)			\
michael@0:     static TLS type name
michael@0: #   define PIXMAN_GET_THREAD_LOCAL(name)				\
michael@0:     (&name)
michael@0: 
michael@0: #elif defined(__MINGW32__) || defined(PIXMAN_USE_XP_DLL_TLS_WORKAROUND)
michael@0: 
michael@0: #   define _NO_W32_PSEUDO_MODIFIERS
michael@0: #   include <windows.h>
michael@0: #undef IN
michael@0: #undef OUT
michael@0: 
michael@0: #   define PIXMAN_DEFINE_THREAD_LOCAL(type, name)			\
michael@0:     static volatile int tls_ ## name ## _initialized = 0;		\
michael@0:     static void *tls_ ## name ## _mutex = NULL;				\
michael@0:     static unsigned tls_ ## name ## _index;				\
michael@0: 									\
michael@0:     static type *							\
michael@0:     tls_ ## name ## _alloc (void)					\
michael@0:     {									\
michael@0:         type *value = calloc (1, sizeof (type));			\
michael@0:         if (value)							\
michael@0:             TlsSetValue (tls_ ## name ## _index, value);		\
michael@0:         return value;							\
michael@0:     }									\
michael@0: 									\
michael@0:     static force_inline type *						\
michael@0:     tls_ ## name ## _get (void)						\
michael@0:     {									\
michael@0: 	type *value;							\
michael@0: 	if (!tls_ ## name ## _initialized)				\
michael@0: 	{								\
michael@0: 	    if (!tls_ ## name ## _mutex)				\
michael@0: 	    {								\
michael@0: 		void *mutex = CreateMutexA (NULL, 0, NULL);		\
michael@0: 		if (InterlockedCompareExchangePointer (			\
michael@0: 			&tls_ ## name ## _mutex, mutex, NULL) != NULL)	\
michael@0: 		{							\
michael@0: 		    CloseHandle (mutex);				\
michael@0: 		}							\
michael@0: 	    }								\
michael@0: 	    WaitForSingleObject (tls_ ## name ## _mutex, 0xFFFFFFFF);	\
michael@0: 	    if (!tls_ ## name ## _initialized)				\
michael@0: 	    {								\
michael@0: 		tls_ ## name ## _index = TlsAlloc ();			\
michael@0: 		tls_ ## name ## _initialized = 1;			\
michael@0: 	    }								\
michael@0: 	    ReleaseMutex (tls_ ## name ## _mutex);			\
michael@0: 	}								\
michael@0: 	if (tls_ ## name ## _index == 0xFFFFFFFF)			\
michael@0: 	    return NULL;						\
michael@0: 	value = TlsGetValue (tls_ ## name ## _index);			\
michael@0: 	if (!value)							\
michael@0: 	    value = tls_ ## name ## _alloc ();				\
michael@0: 	return value;							\
michael@0:     }
michael@0: 
michael@0: #   define PIXMAN_GET_THREAD_LOCAL(name)				\
michael@0:     tls_ ## name ## _get ()
michael@0: 
michael@0: #elif defined(_MSC_VER)
michael@0: 
michael@0: #   define PIXMAN_DEFINE_THREAD_LOCAL(type, name)			\
michael@0:     static __declspec(thread) type name
michael@0: #   define PIXMAN_GET_THREAD_LOCAL(name)				\
michael@0:     (&name)
michael@0: 
michael@0: #elif defined(HAVE_PTHREAD_SETSPECIFIC)
michael@0: 
michael@0: #include <pthread.h>
michael@0: 
michael@0: #  define PIXMAN_DEFINE_THREAD_LOCAL(type, name)			\
michael@0:     static pthread_once_t tls_ ## name ## _once_control = PTHREAD_ONCE_INIT; \
michael@0:     static pthread_key_t tls_ ## name ## _key;				\
michael@0: 									\
michael@0:     static void								\
michael@0:     tls_ ## name ## _destroy_value (void *value)			\
michael@0:     {									\
michael@0: 	free (value);							\
michael@0:     }									\
michael@0: 									\
michael@0:     static void								\
michael@0:     tls_ ## name ## _make_key (void)					\
michael@0:     {									\
michael@0: 	pthread_key_create (&tls_ ## name ## _key,			\
michael@0: 			    tls_ ## name ## _destroy_value);		\
michael@0:     }									\
michael@0: 									\
michael@0:     static type *							\
michael@0:     tls_ ## name ## _alloc (void)					\
michael@0:     {									\
michael@0: 	type *value = calloc (1, sizeof (type));			\
michael@0: 	if (value)							\
michael@0: 	    pthread_setspecific (tls_ ## name ## _key, value);		\
michael@0: 	return value;							\
michael@0:     }									\
michael@0: 									\
michael@0:     static force_inline type *						\
michael@0:     tls_ ## name ## _get (void)						\
michael@0:     {									\
michael@0: 	type *value = NULL;						\
michael@0: 	if (pthread_once (&tls_ ## name ## _once_control,		\
michael@0: 			  tls_ ## name ## _make_key) == 0)		\
michael@0: 	{								\
michael@0: 	    value = pthread_getspecific (tls_ ## name ## _key);		\
michael@0: 	    if (!value)							\
michael@0: 		value = tls_ ## name ## _alloc ();			\
michael@0: 	}								\
michael@0: 	return value;							\
michael@0:     }
michael@0: 
michael@0: #   define PIXMAN_GET_THREAD_LOCAL(name)				\
michael@0:     tls_ ## name ## _get ()
michael@0: 
michael@0: #else
michael@0: 
michael@0: #    error "Unknown thread local support for this system. Pixman will not work with multiple threads. Define PIXMAN_NO_TLS to acknowledge and accept this limitation and compile pixman without thread-safety support."
michael@0: 
michael@0: #endif