/* 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
/* In libxul builds we don't ever want to export pixman symbols */
#if 1
#include "prcpucfg.h"
#ifdef HAVE_VISIBILITY_HIDDEN_ATTRIBUTE
#define CVISIBILITY_HIDDEN __attribute__((visibility(
"hidden")))
#elif defined(__SUNPRO_C) && (__SUNPRO_C >=
0x550)
#define CVISIBILITY_HIDDEN __hidden
#else
#define CVISIBILITY_HIDDEN
#endif
/* In libxul builds we don't ever want to export cairo symbols */
#define PIXMAN_EXPORT
extern CVISIBILITY_HIDDEN
#else
/* 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
#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
