0,0 → 1,232 |
/* 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 |
#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_PTHREAD_SETSPECIFIC) |
|
#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 |