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/* Pixman uses some non-standard compiler features. This file ensures
* they exist
*
* The features are:
*
* FUNC must be defined to expand to the current function
* PIXMAN_EXPORT should be defined to whatever is required to
* export functions from a shared library
* limits limits for various types must be defined
* inline must be defined
* force_inline must be defined
*/
#if defined (__GNUC__)
# define FUNC ((const char*) (__PRETTY_FUNCTION__))
#elif defined (__sun) || (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
# define FUNC ((const char*) (__func__))
#else
# define FUNC ((const char*) ("???"))
#endif
#if defined (__GNUC__)
# define unlikely(expr) __builtin_expect ((expr), 0)
#else
# define unlikely(expr) (expr)
#endif
#if defined (__GNUC__)
# define MAYBE_UNUSED __attribute__((unused))
#else
# define MAYBE_UNUSED
#endif
#ifndef INT16_MIN
# define INT16_MIN (-32767-1)
#endif
#ifndef INT16_MAX
# define INT16_MAX (32767)
#endif
#ifndef INT32_MIN
# define INT32_MIN (-2147483647-1)
#endif
#ifndef INT32_MAX
# define INT32_MAX (2147483647)
#endif
#ifndef UINT32_MIN
# define UINT32_MIN (0)
#endif
#ifndef UINT32_MAX
# define UINT32_MAX (4294967295U)
#endif
#ifndef INT64_MIN
# define INT64_MIN (-9223372036854775807-1)
#endif
#ifndef INT64_MAX
# define INT64_MAX (9223372036854775807)
#endif
#ifndef SIZE_MAX
# define SIZE_MAX ((size_t)-1)
#endif
#ifndef M_PI
# define M_PI 3.14159265358979323846
#endif
#ifdef _MSC_VER
/* 'inline' is available only in C++ in MSVC */
# define inline __inline
# define force_inline __forceinline
# define noinline __declspec(noinline)
#elif defined __GNUC__ || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
# define inline __inline__
# define force_inline __inline__ __attribute__ ((__always_inline__))
# define noinline __attribute__((noinline))
#else
# ifndef force_inline
# define force_inline inline
# endif
# ifndef noinline
# define noinline
# endif
#endif
/* GCC visibility */
#if defined(__GNUC__) && __GNUC__ >= 4 && !defined(_WIN32)
# define PIXMAN_EXPORT __attribute__ ((visibility("default")))
/* Sun Studio 8 visibility */
#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
# define PIXMAN_EXPORT __global
#elif defined (_MSC_VER) || defined(__MINGW32__)
# define PIXMAN_EXPORT PIXMAN_API
#else
# define PIXMAN_EXPORT
#endif
/* member offsets */
#define CONTAINER_OF(type, member, data) \
((type *)(((uint8_t *)data) - offsetof (type, member)))
/* TLS */
#if defined(PIXMAN_NO_TLS)
# define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
static type name
# define PIXMAN_GET_THREAD_LOCAL(name) \
(&name)
#elif defined(TLS)
# define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
static TLS type name
# define PIXMAN_GET_THREAD_LOCAL(name) \
(&name)
#elif defined(__MINGW32__)
# define _NO_W32_PSEUDO_MODIFIERS
# include <windows.h>
# define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
static volatile int tls_ ## name ## _initialized = 0; \
static void *tls_ ## name ## _mutex = NULL; \
static unsigned tls_ ## name ## _index; \
\
static type * \
tls_ ## name ## _alloc (void) \
{ \
type *value = calloc (1, sizeof (type)); \
if (value) \
TlsSetValue (tls_ ## name ## _index, value); \
return value; \
} \
\
static force_inline type * \
tls_ ## name ## _get (void) \
{ \
type *value; \
if (!tls_ ## name ## _initialized) \
{ \
if (!tls_ ## name ## _mutex) \
{ \
void *mutex = CreateMutexA (NULL, 0, NULL); \
if (InterlockedCompareExchangePointer ( \
&tls_ ## name ## _mutex, mutex, NULL) != NULL) \
{ \
CloseHandle (mutex); \
} \
} \
WaitForSingleObject (tls_ ## name ## _mutex, 0xFFFFFFFF); \
if (!tls_ ## name ## _initialized) \
{ \
tls_ ## name ## _index = TlsAlloc (); \
tls_ ## name ## _initialized = 1; \
} \
ReleaseMutex (tls_ ## name ## _mutex); \
} \
if (tls_ ## name ## _index == 0xFFFFFFFF) \
return NULL; \
value = TlsGetValue (tls_ ## name ## _index); \
if (!value) \
value = tls_ ## name ## _alloc (); \
return value; \
}
# define PIXMAN_GET_THREAD_LOCAL(name) \
tls_ ## name ## _get ()
#elif defined(_MSC_VER)
# define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
static __declspec(thread) type name
# define PIXMAN_GET_THREAD_LOCAL(name) \
(&name)
#elif defined(HAVE_PTHREADS)
#include <pthread.h>
# define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
static pthread_once_t tls_ ## name ## _once_control = PTHREAD_ONCE_INIT; \
static pthread_key_t tls_ ## name ## _key; \
\
static void \
tls_ ## name ## _destroy_value (void *value) \
{ \
free (value); \
} \
\
static void \
tls_ ## name ## _make_key (void) \
{ \
pthread_key_create (&tls_ ## name ## _key, \
tls_ ## name ## _destroy_value); \
} \
\
static type * \
tls_ ## name ## _alloc (void) \
{ \
type *value = calloc (1, sizeof (type)); \
if (value) \
pthread_setspecific (tls_ ## name ## _key, value); \
return value; \
} \
\
static force_inline type * \
tls_ ## name ## _get (void) \
{ \
type *value = NULL; \
if (pthread_once (&tls_ ## name ## _once_control, \
tls_ ## name ## _make_key) == 0) \
{ \
value = pthread_getspecific (tls_ ## name ## _key); \
if (!value) \
value = tls_ ## name ## _alloc (); \
} \
return value; \
}
# define PIXMAN_GET_THREAD_LOCAL(name) \
tls_ ## name ## _get ()
#else
# 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."
#endif
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