1 /* Pixman uses some non-standard compiler features. This file ensures
6 * FUNC must be defined to expand to the current function
7 * PIXMAN_EXPORT should be defined to whatever is required to
8 * export functions from a shared library
9 * limits limits for various types must be defined
10 * inline must be defined
11 * force_inline must be defined
13 #if defined (__GNUC__)
14 # define FUNC ((const char*) (__PRETTY_FUNCTION__))
15 #elif defined (__sun) || (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
16 # define FUNC ((const char*) (__func__))
18 # define FUNC ((const char*) ("???"))
22 # define INT16_MIN (-32767-1)
26 # define INT16_MAX (32767)
30 # define INT32_MIN (-2147483647-1)
34 # define INT32_MAX (2147483647)
38 # define UINT32_MIN (0)
42 # define UINT32_MAX (4294967295U)
46 # define M_PI 3.14159265358979323846
50 /* 'inline' is available only in C++ in MSVC */
51 # define inline __inline
52 # define force_inline __forceinline
53 #elif defined __GNUC__ || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
54 # define inline __inline__
55 # define force_inline __inline__ __attribute__ ((__always_inline__))
58 # define force_inline inline
63 #if defined(__GNUC__) && __GNUC__ >= 4 && !defined(_WIN32)
64 # define PIXMAN_EXPORT __attribute__ ((visibility("default")))
65 /* Sun Studio 8 visibility */
66 #elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
67 # define PIXMAN_EXPORT __global
69 # define PIXMAN_EXPORT
73 #if defined(PIXMAN_NO_TLS)
75 # define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
77 # define PIXMAN_GET_THREAD_LOCAL(name) \
80 #elif defined(TOOLCHAIN_SUPPORTS__THREAD)
82 # define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
83 static __thread type name
84 # define PIXMAN_GET_THREAD_LOCAL(name) \
87 #elif defined(__MINGW32__)
89 # define _NO_W32_PSEUDO_MODIFIERS
92 # define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
93 static volatile int tls_ ## name ## _initialized = 0; \
94 static void *tls_ ## name ## _mutex = NULL; \
95 static unsigned tls_ ## name ## _index; \
98 tls_ ## name ## _alloc (void) \
100 type *value = calloc (1, sizeof (type)); \
102 TlsSetValue (tls_ ## name ## _index, value); \
106 static force_inline type * \
107 tls_ ## name ## _get (void) \
110 if (!tls_ ## name ## _initialized) \
112 if (!tls_ ## name ## _mutex) \
114 void *mutex = CreateMutexA (NULL, 0, NULL); \
115 if (InterlockedCompareExchangePointer ( \
116 &tls_ ## name ## _mutex, mutex, NULL) != NULL) \
118 CloseHandle (mutex); \
121 WaitForSingleObject (tls_ ## name ## _mutex, 0xFFFFFFFF); \
122 if (!tls_ ## name ## _initialized) \
124 tls_ ## name ## _index = TlsAlloc (); \
125 tls_ ## name ## _initialized = 1; \
127 ReleaseMutex (tls_ ## name ## _mutex); \
129 if (tls_ ## name ## _index == 0xFFFFFFFF) \
131 value = TlsGetValue (tls_ ## name ## _index); \
133 value = tls_ ## name ## _alloc (); \
137 # define PIXMAN_GET_THREAD_LOCAL(name) \
138 tls_ ## name ## _get ()
140 #elif defined(_MSC_VER)
142 # define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
143 static __declspec(thread) type name
144 # define PIXMAN_GET_THREAD_LOCAL(name) \
147 #elif defined(HAVE_PTHREAD_SETSPECIFIC)
151 # define PIXMAN_DEFINE_THREAD_LOCAL(type, name) \
152 static pthread_once_t tls_ ## name ## _once_control = PTHREAD_ONCE_INIT; \
153 static pthread_key_t tls_ ## name ## _key; \
156 tls_ ## name ## _destroy_value (void *value) \
162 tls_ ## name ## _make_key (void) \
164 pthread_key_create (&tls_ ## name ## _key, \
165 tls_ ## name ## _destroy_value); \
169 tls_ ## name ## _alloc (void) \
171 type *value = calloc (1, sizeof (type)); \
173 pthread_setspecific (tls_ ## name ## _key, value); \
177 static force_inline type * \
178 tls_ ## name ## _get (void) \
180 type *value = NULL; \
181 if (pthread_once (&tls_ ## name ## _once_control, \
182 tls_ ## name ## _make_key) == 0) \
184 value = pthread_getspecific (tls_ ## name ## _key); \
186 value = tls_ ## name ## _alloc (); \
191 # define PIXMAN_GET_THREAD_LOCAL(name) \
192 tls_ ## name ## _get ()
196 # 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."