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Comparing cf.schmorp.de/Deliantra-Client/ecb.h (file contents):
Revision 1.2 by root, Mon Nov 19 00:56:08 2018 UTC vs.
Revision 1.3 by root, Sat Jan 11 02:10:03 2020 UTC

40 40
41#ifndef ECB_H 41#ifndef ECB_H
42#define ECB_H 42#define ECB_H
43 43
44/* 16 bits major, 16 bits minor */ 44/* 16 bits major, 16 bits minor */
45#define ECB_VERSION 0x00010005 45#define ECB_VERSION 0x00010007
46 46
47#ifdef _WIN32 47#ifdef _WIN32
48 typedef signed char int8_t; 48 typedef signed char int8_t;
49 typedef unsigned char uint8_t; 49 typedef unsigned char uint8_t;
50 typedef signed short int16_t; 50 typedef signed short int16_t;
77#endif 77#endif
78 78
79#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) 79#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
80#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) 80#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
81 81
82#ifndef ECB_OPTIMIZE_SIZE
83 #if __OPTIMIZE_SIZE__
84 #define ECB_OPTIMIZE_SIZE 1
85 #else
86 #define ECB_OPTIMIZE_SIZE 0
87 #endif
88#endif
89
82/* work around x32 idiocy by defining proper macros */ 90/* work around x32 idiocy by defining proper macros */
83#if ECB_GCC_AMD64 || ECB_MSVC_AMD64 91#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
84 #if _ILP32 92 #if _ILP32
85 #define ECB_AMD64_X32 1 93 #define ECB_AMD64_X32 1
86 #else 94 #else
164 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ 172 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
165#endif 173#endif
166 174
167#ifndef ECB_MEMORY_FENCE 175#ifndef ECB_MEMORY_FENCE
168 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 176 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
177 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
169 #if __i386 || __i386__ 178 #if __i386 || __i386__
170 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 179 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
171 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 180 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
172 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") 181 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
173 #elif ECB_GCC_AMD64 182 #elif ECB_GCC_AMD64
223 #if ECB_GCC_VERSION(4,7) 232 #if ECB_GCC_VERSION(4,7)
224 /* see comment below (stdatomic.h) about the C11 memory model. */ 233 /* see comment below (stdatomic.h) about the C11 memory model. */
225 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 234 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
226 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 235 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
227 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 236 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
237 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
228 238
229 #elif ECB_CLANG_EXTENSION(c_atomic) 239 #elif ECB_CLANG_EXTENSION(c_atomic)
230 /* see comment below (stdatomic.h) about the C11 memory model. */ 240 /* see comment below (stdatomic.h) about the C11 memory model. */
231 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 241 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
232 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 242 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
233 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 243 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
244 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
234 245
235 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 246 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
236 #define ECB_MEMORY_FENCE __sync_synchronize () 247 #define ECB_MEMORY_FENCE __sync_synchronize ()
237 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 248 #elif _MSC_VER >= 1500 /* VC++ 2008 */
238 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 249 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
248 #elif defined _WIN32 259 #elif defined _WIN32
249 #include <WinNT.h> 260 #include <WinNT.h>
250 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 261 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
251 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 262 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
252 #include <mbarrier.h> 263 #include <mbarrier.h>
253 #define ECB_MEMORY_FENCE __machine_rw_barrier () 264 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
254 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 265 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
255 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 266 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
267 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
256 #elif __xlC__ 268 #elif __xlC__
257 #define ECB_MEMORY_FENCE __sync () 269 #define ECB_MEMORY_FENCE __sync ()
258 #endif 270 #endif
259#endif 271#endif
260 272
261#ifndef ECB_MEMORY_FENCE 273#ifndef ECB_MEMORY_FENCE
262 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 274 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
263 /* we assume that these memory fences work on all variables/all memory accesses, */ 275 /* we assume that these memory fences work on all variables/all memory accesses, */
264 /* not just C11 atomics and atomic accesses */ 276 /* not just C11 atomics and atomic accesses */
265 #include <stdatomic.h> 277 #include <stdatomic.h>
266 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
267 /* any fence other than seq_cst, which isn't very efficient for us. */
268 /* Why that is, we don't know - either the C11 memory model is quite useless */
269 /* for most usages, or gcc and clang have a bug */
270 /* I *currently* lean towards the latter, and inefficiently implement */
271 /* all three of ecb's fences as a seq_cst fence */
272 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
273 /* for all __atomic_thread_fence's except seq_cst */
274 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 278 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
279 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
280 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
275 #endif 281 #endif
276#endif 282#endif
277 283
278#ifndef ECB_MEMORY_FENCE 284#ifndef ECB_MEMORY_FENCE
279 #if !ECB_AVOID_PTHREADS 285 #if !ECB_AVOID_PTHREADS
297 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 303 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
298#endif 304#endif
299 305
300#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 306#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
301 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 307 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
308#endif
309
310#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
311 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
302#endif 312#endif
303 313
304/*****************************************************************************/ 314/*****************************************************************************/
305 315
306#if ECB_CPP 316#if ECB_CPP

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