ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libecb/ecb.h
(Generate patch)

Comparing libecb/ecb.h (file contents):
Revision 1.78 by root, Sat Feb 4 15:17:22 2012 UTC vs.
Revision 1.90 by root, Tue May 29 14:09:49 2012 UTC

… …
28 */ 28 */
29 29
30#ifndef ECB_H 30#ifndef ECB_H
31#define ECB_H 31#define ECB_H
32 32
33/* 16 bits major, 16 bits minor */
34#define ECB_VERSION 0x00010001
35
33#ifdef _WIN32 36#ifdef _WIN32
34 typedef signed char int8_t; 37 typedef signed char int8_t;
35 typedef unsigned char uint8_t; 38 typedef unsigned char uint8_t;
36 typedef signed short int16_t; 39 typedef signed short int16_t;
37 typedef unsigned short uint16_t; 40 typedef unsigned short uint16_t;
… …
42 typedef unsigned long long uint64_t; 45 typedef unsigned long long uint64_t;
43 #else /* _MSC_VER || __BORLANDC__ */ 46 #else /* _MSC_VER || __BORLANDC__ */
44 typedef signed __int64 int64_t; 47 typedef signed __int64 int64_t;
45 typedef unsigned __int64 uint64_t; 48 typedef unsigned __int64 uint64_t;
46 #endif 49 #endif
50 #ifdef _WIN64
51 #define ECB_PTRSIZE 8
52 typedef uint64_t uintptr_t;
53 typedef int64_t intptr_t;
54 #else
55 #define ECB_PTRSIZE 4
56 typedef uint32_t uintptr_t;
57 typedef int32_t intptr_t;
58 #endif
59 typedef intptr_t ptrdiff_t;
47#else 60#else
48 #include <inttypes.h> 61 #include <inttypes.h>
62 #if UINTMAX_MAX > 0xffffffffU
63 #define ECB_PTRSIZE 8
64 #else
65 #define ECB_PTRSIZE 4
66 #endif
49#endif 67#endif
50 68
51/* many compilers define _GNUC_ to some versions but then only implement 69/* many compilers define _GNUC_ to some versions but then only implement
52 * what their idiot authors think are the "more important" extensions, 70 * what their idiot authors think are the "more important" extensions,
53 * causing enormous grief in return for some better fake benchmark numbers. 71 * causing enormous grief in return for some better fake benchmark numbers.
54 * or so. 72 * or so.
55 * we try to detect these and simply assume they are not gcc - if they have 73 * we try to detect these and simply assume they are not gcc - if they have
56 * an issue with that they should have done it right in the first place. 74 * an issue with that they should have done it right in the first place.
57 */ 75 */
58#ifndef ECB_GCC_VERSION 76#ifndef ECB_GCC_VERSION
59 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 77 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
60 #define ECB_GCC_VERSION(major,minor) 0 78 #define ECB_GCC_VERSION(major,minor) 0
61 #else 79 #else
62 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 80 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
63 #endif 81 #endif
64#endif 82#endif
65 83
84#define ECB_C99 (__STDC_VERSION__ >= 199901L)
85#define ECB_C11 (__STDC_VERSION__ >= 201112L)
86
66/*****************************************************************************/ 87/*****************************************************************************/
67 88
68/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 89/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
69/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 90/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
70 91
92#if ECB_NO_THREADS
93# define ECB_NO_SMP 1
94#endif
95
71#if ECB_NO_THREADS || ECB_NO_SMP 96#if ECB_NO_THREADS || ECB_NO_SMP
72 #define ECB_MEMORY_FENCE do { } while (0) 97 #define ECB_MEMORY_FENCE do { } while (0)
73#endif 98#endif
74 99
75#ifndef ECB_MEMORY_FENCE 100#ifndef ECB_MEMORY_FENCE
101 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
102 /* we assume that these memory fences work on all variables/all memory accesses, */
103 /* not just C11 atomics and atomic accesses */
104 #include <stdatomic.h>
105 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_acq_rel)
106 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
107 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
108 #endif
109#endif
110
111#ifndef ECB_MEMORY_FENCE
76 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 112 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
77 #if __i386 || __i386__ 113 #if __i386 || __i386__
78 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 114 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
79 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 115 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
80 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 116 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
81 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 117 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
82 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 118 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
83 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 119 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
84 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 120 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
85 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 121 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
86 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 122 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
87 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 123 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
88 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 124 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
89 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 125 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
90 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 126 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
91 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 127 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
92 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 128 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
93 #elif __sparc || __sparc__ 129 #elif __sparc || __sparc__
94 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 130 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
95 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 131 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
96 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 132 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
97 #elif defined(__s390__) || defined(__s390x__) 133 #elif defined __s390__ || defined __s390x__
98 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 134 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
135 #elif defined __mips__
136 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
137 #elif defined __alpha__
138 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
99 #endif 139 #endif
100 #endif 140 #endif
101#endif 141#endif
102 142
103#ifndef ECB_MEMORY_FENCE 143#ifndef ECB_MEMORY_FENCE
104 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 144 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
105 #define ECB_MEMORY_FENCE __sync_synchronize () 145 #define ECB_MEMORY_FENCE __sync_synchronize ()
106 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 146 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
107 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 147 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
108 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 148 #elif _MSC_VER >= 1400 /* VC++ 2005 */
109 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 149 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
110 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 150 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
111 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 151 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
112 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 152 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
113 #elif defined(_WIN32) 153 #elif defined _WIN32
114 #include <WinNT.h> 154 #include <WinNT.h>
115 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 155 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
116 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 156 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
117 #include <mbarrier.h> 157 #include <mbarrier.h>
118 #define ECB_MEMORY_FENCE __machine_rw_barrier () 158 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
119 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 159 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
120 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 160 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
161 #elif __xlC__
162 #define ECB_MEMORY_FENCE __sync ()
121 #endif 163 #endif
122#endif 164#endif
123 165
124#ifndef ECB_MEMORY_FENCE 166#ifndef ECB_MEMORY_FENCE
125 #if !ECB_AVOID_PTHREADS 167 #if !ECB_AVOID_PTHREADS
… …
137 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 179 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
138 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 180 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
139 #endif 181 #endif
140#endif 182#endif
141 183
142#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 184#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
143 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 185 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
144#endif 186#endif
145 187
146#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 188#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
147 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 189 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
148#endif 190#endif
149 191
150/*****************************************************************************/ 192/*****************************************************************************/
151
152#define ECB_C99 (__STDC_VERSION__ >= 199901L)
153 193
154#if __cplusplus 194#if __cplusplus
155 #define ecb_inline static inline 195 #define ecb_inline static inline
156#elif ECB_GCC_VERSION(2,5) 196#elif ECB_GCC_VERSION(2,5)
157 #define ecb_inline static __inline__ 197 #define ecb_inline static __inline__
… …
196#elif ECB_GCC_VERSION(3,0) 236#elif ECB_GCC_VERSION(3,0)
197 #define ecb_decltype(x) __typeof(x) 237 #define ecb_decltype(x) __typeof(x)
198#endif 238#endif
199 239
200#define ecb_noinline ecb_attribute ((__noinline__)) 240#define ecb_noinline ecb_attribute ((__noinline__))
201#define ecb_noreturn ecb_attribute ((__noreturn__))
202#define ecb_unused ecb_attribute ((__unused__)) 241#define ecb_unused ecb_attribute ((__unused__))
203#define ecb_const ecb_attribute ((__const__)) 242#define ecb_const ecb_attribute ((__const__))
204#define ecb_pure ecb_attribute ((__pure__)) 243#define ecb_pure ecb_attribute ((__pure__))
244
245#if ECB_C11
246 #define ecb_noreturn _Noreturn
247#else
248 #define ecb_noreturn ecb_attribute ((__noreturn__))
249#endif
205 250
206#if ECB_GCC_VERSION(4,3) 251#if ECB_GCC_VERSION(4,3)
207 #define ecb_artificial ecb_attribute ((__artificial__)) 252 #define ecb_artificial ecb_attribute ((__artificial__))
208 #define ecb_hot ecb_attribute ((__hot__)) 253 #define ecb_hot ecb_attribute ((__hot__))
209 #define ecb_cold ecb_attribute ((__cold__)) 254 #define ecb_cold ecb_attribute ((__cold__))
… …
300 345
301 return r + ecb_ld32 (x); 346 return r + ecb_ld32 (x);
302 } 347 }
303#endif 348#endif
304 349
350ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
351ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
352ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
353ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
354
305ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 355ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
306ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 356ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
307{ 357{
308 return ( (x * 0x0802U & 0x22110U) 358 return ( (x * 0x0802U & 0x22110U)
309 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 359 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines