StarPU Handbook

starpu_util.h
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1/* StarPU --- Runtime system for heterogeneous multicore architectures.
2 *
3 * Copyright (C) 2008-2021 Université de Bordeaux, CNRS (LaBRI UMR 5800), Inria
4 *
5 * StarPU is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License as published by
7 * the Free Software Foundation; either version 2.1 of the License, or (at
8 * your option) any later version.
9 *
10 * StarPU is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 *
14 * See the GNU Lesser General Public License in COPYING.LGPL for more details.
15 */
16
17#ifndef __STARPU_UTIL_H__
18#define __STARPU_UTIL_H__
19
20#include <stdio.h>
21#include <stdlib.h>
22#include <stdint.h>
23#include <string.h>
24#include <assert.h>
25
26#include <starpu_config.h>
27
28#ifdef __GLIBC__
29#include <execinfo.h>
30#endif
31
32#ifdef STARPU_SIMGRID_MC
33#include <simgrid/modelchecker.h>
34#endif
35
36#ifdef __cplusplus
37 extern "C"
38{
39#endif
40
52#if defined __GNUC__ && defined __GNUC_MINOR__
53# define STARPU_GNUC_PREREQ(maj, min) \
54 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
55#else
56# define STARPU_GNUC_PREREQ(maj, min) 0
57#endif
58
63#ifdef __GNUC__
64# define STARPU_UNLIKELY(expr) (__builtin_expect(!!(expr),0))
65#else
66# define STARPU_UNLIKELY(expr) (expr)
67#endif
68
73#ifdef __GNUC__
74# define STARPU_LIKELY(expr) (__builtin_expect(!!(expr),1))
75#else
76# define STARPU_LIKELY(expr) (expr)
77#endif
78
82#ifdef __GNUC__
83# define STARPU_ATTRIBUTE_UNUSED __attribute__((unused))
84#else
85# define STARPU_ATTRIBUTE_UNUSED
86#endif
87
91#ifdef __GNUC__
92# define STARPU_ATTRIBUTE_NORETURN __attribute__((noreturn))
93#else
94# define STARPU_ATTRIBUTE_NORETURN
95#endif
96
100#ifdef __GNUC__
101# define STARPU_ATTRIBUTE_INTERNAL __attribute__ ((visibility ("internal")))
102#else
103# define STARPU_ATTRIBUTE_INTERNAL
104#endif
105
109#ifdef __GNUC__
110# define STARPU_ATTRIBUTE_MALLOC __attribute__((malloc))
111#else
112# define STARPU_ATTRIBUTE_MALLOC
113#endif
114
118#ifdef __GNUC__
119# define STARPU_ATTRIBUTE_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
120#else
121# define STARPU_ATTRIBUTE_WARN_UNUSED_RESULT
122#endif
123
127#ifdef __GNUC__
128# define STARPU_ATTRIBUTE_PURE __attribute__((pure))
129#else
130# define STARPU_ATTRIBUTE_PURE
131#endif
132
136#ifdef __GNUC__
137# define STARPU_ATTRIBUTE_ALIGNED(size) __attribute__((aligned(size)))
138#else
139# define STARPU_ATTRIBUTE_ALIGNED(size)
140#endif
141
142#ifdef __GNUC__
143# define STARPU_ATTRIBUTE_FORMAT(type, string, first) __attribute__((format(type, string, first)))
144#else
145# define STARPU_ATTRIBUTE_FORMAT(type, string, first)
146#endif
147
148/* Note that if we're compiling C++, then just use the "inline"
149 keyword, since it's part of C++ */
150#if defined(c_plusplus) || defined(__cplusplus)
151# define STARPU_INLINE inline
152#elif defined(_MSC_VER) || defined(__HP_cc)
153# define STARPU_INLINE __inline
154#else
155# define STARPU_INLINE __inline__
156#endif
157
158#if STARPU_GNUC_PREREQ(4, 3)
159# define STARPU_ATTRIBUTE_CALLOC_SIZE(num,size) __attribute__((alloc_size(num,size)))
160# define STARPU_ATTRIBUTE_ALLOC_SIZE(size) __attribute__((alloc_size(size)))
161#else
162# define STARPU_ATTRIBUTE_CALLOC_SIZE(num,size)
163# define STARPU_ATTRIBUTE_ALLOC_SIZE(size)
164#endif
165
166#if STARPU_GNUC_PREREQ(3, 1) && !defined(BUILDING_STARPU) && !defined(STARPU_USE_DEPRECATED_API) && !defined(STARPU_USE_DEPRECATED_ONE_ZERO_API)
167#define STARPU_DEPRECATED __attribute__((__deprecated__))
168#else
169#define STARPU_DEPRECATED
170#endif /* __GNUC__ */
171
172#if STARPU_GNUC_PREREQ(3,3)
173#define STARPU_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
174#else
175#define STARPU_WARN_UNUSED_RESULT
176#endif /* __GNUC__ */
177
178#define STARPU_BACKTRACE_LENGTH 32
179#ifdef __GLIBC__
180# define STARPU_DUMP_BACKTRACE() do { \
181 void *__ptrs[STARPU_BACKTRACE_LENGTH]; \
182 int __n = backtrace(__ptrs, STARPU_BACKTRACE_LENGTH); \
183 backtrace_symbols_fd(__ptrs, __n, 2); \
184} while (0)
185#else
186# define STARPU_DUMP_BACKTRACE() do { } while (0)
187#endif
188
189#ifdef STARPU_SIMGRID_MC
190#define STARPU_SIMGRID_ASSERT(x) MC_assert(!!(x))
191#else
192#define STARPU_SIMGRID_ASSERT(x)
193#endif
194
199#ifdef STARPU_NO_ASSERT
200#define STARPU_ASSERT(x) do { if (0) { (void) (x); } } while(0)
201#else
202# if defined(__CUDACC__) || defined(STARPU_HAVE_WINDOWS)
203# define STARPU_ASSERT(x) do { if (STARPU_UNLIKELY(!(x))) { STARPU_DUMP_BACKTRACE(); STARPU_SIMGRID_ASSERT(x); *(int*)NULL = 0; } } while(0)
204# else
205# define STARPU_ASSERT(x) do { if (STARPU_UNLIKELY(!(x))) { STARPU_DUMP_BACKTRACE(); STARPU_SIMGRID_ASSERT(x); assert(x); } } while (0)
206# endif
207#endif
208
209#ifdef STARPU_NO_ASSERT
210#define STARPU_ASSERT_ACCESSIBLE(x) do { if (0) { (void) (x); } } while(0)
211#else
212#define STARPU_ASSERT_ACCESSIBLE(ptr) do { volatile char __c STARPU_ATTRIBUTE_UNUSED = *(char*) (ptr); } while(0)
213#endif
214
220#ifdef STARPU_NO_ASSERT
221#define STARPU_ASSERT_MSG(x, msg, ...) do { if (0) { (void) (x); (void) msg; } } while(0)
222#else
223# if defined(__CUDACC__) || defined(STARPU_HAVE_WINDOWS)
224# define STARPU_ASSERT_MSG(x, msg, ...) do { if (STARPU_UNLIKELY(!(x))) { STARPU_DUMP_BACKTRACE(); fprintf(stderr, "\n[starpu][%s][assert failure] " msg "\n\n", __starpu_func__, ## __VA_ARGS__); STARPU_SIMGRID_ASSERT(x); *(int*)NULL = 0; }} while(0)
225# else
226# define STARPU_ASSERT_MSG(x, msg, ...) do { if (STARPU_UNLIKELY(!(x))) { STARPU_DUMP_BACKTRACE(); fprintf(stderr, "\n[starpu][%s][assert failure] " msg "\n\n", __starpu_func__, ## __VA_ARGS__); STARPU_SIMGRID_ASSERT(x); assert(x); } } while(0)
227# endif
228#endif
229
230#ifdef __APPLE_CC__
231# ifdef __clang_analyzer__
232# define _starpu_abort() exit(42)
233# else
234# define _starpu_abort() *(volatile int*)NULL = 0
235# endif
236#else
237# define _starpu_abort() abort()
238#endif
239
243#define STARPU_ABORT() do { \
244 STARPU_DUMP_BACKTRACE(); \
245 fprintf(stderr, "[starpu][abort][%s()@%s:%d]\n", __starpu_func__, __FILE__, __LINE__); \
246 _starpu_abort(); \
247} while(0)
248
254#define STARPU_ABORT_MSG(msg, ...) do { \
255 STARPU_DUMP_BACKTRACE(); \
256 fprintf(stderr, "[starpu][abort][%s()@%s:%d] " msg "\n", __starpu_func__, __FILE__, __LINE__, ## __VA_ARGS__); \
257 _starpu_abort(); \
258} while(0)
259
260#if defined(_MSC_VER)
261 #undef STARPU_HAVE_STRERROR_R
262#endif
263
264#if defined(STARPU_HAVE_STRERROR_R)
265#if (! defined(__GLIBC__) || !__GLIBC__) || ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && (! defined(_GNU_SOURCE)))
266/* XSI-compliant version of strerror_r returns an int */
267# define starpu_strerror_r(errnum, buf, buflen) \
268 do \
269 { \
270 int _ret = strerror_r((errnum), (buf), (buflen)); \
271 STARPU_ASSERT(_ret == 0); \
272 } \
273 while (0)
274#else
275/* GNU-specific version of strerror_r returns a char * */
276# define starpu_strerror_r(errnum, buf, buflen) \
277 do \
278 { \
279 char * const _user_buf = (buf); \
280 const size_t _user_buflen = (buflen); \
281 /* the GNU-specific behaviour when 'buf' == NULL cannot be emulated with the XSI-compliant version */ \
282 STARPU_ASSERT((buf) != NULL); \
283 char * _tmp_buf = strerror_r((errnum), _user_buf, _user_buflen); \
284 if (_tmp_buf != _user_buf) \
285 { \
286 if (_user_buflen > 0) \
287 { \
288 strncpy(_user_buf, _tmp_buf, _user_buflen-1); \
289 _user_buf[_user_buflen-1] = '\0'; \
290 } \
291 } \
292 } \
293 while (0)
294#endif /* strerror_r ABI version */
295#endif /* STARPU_HAVE_STRERROR_R */
296
301#if defined(STARPU_HAVE_STRERROR_R)
302# define STARPU_CHECK_RETURN_VALUE(err, message, ...) {if (STARPU_UNLIKELY(err != 0)) { \
303 char xmessage[256]; starpu_strerror_r(-err, xmessage, 256); \
304 fprintf(stderr, "[starpu] Unexpected value: <%d:%s> returned for " message "\n", err, xmessage, ## __VA_ARGS__); \
305 STARPU_ABORT(); }}
306#else
307# define STARPU_CHECK_RETURN_VALUE(err, message, ...) {if (STARPU_UNLIKELY(err != 0)) { \
308 fprintf(stderr, "[starpu] Unexpected value: <%d> returned for " message "\n", err, ## __VA_ARGS__); \
309 STARPU_ABORT(); }}
310#endif
311
316#if defined(STARPU_HAVE_STRERROR_R)
317# define STARPU_CHECK_RETURN_VALUE_IS(err, value, message, ...) {if (STARPU_UNLIKELY(err != value)) { \
318 char xmessage[256]; starpu_strerror_r(-err, xmessage, 256); \
319 fprintf(stderr, "[starpu] Unexpected value: <%d!=%d:%s> returned for " message "\n", err, value, xmessage, ## __VA_ARGS__); \
320 STARPU_ABORT(); }}
321#else
322# define STARPU_CHECK_RETURN_VALUE_IS(err, value, message, ...) {if (STARPU_UNLIKELY(err != value)) { \
323 fprintf(stderr, "[starpu] Unexpected value: <%d != %d> returned for " message "\n", err, value, ## __VA_ARGS__); \
324 STARPU_ABORT(); }}
325#endif
326
327/* Note: do not use _starpu_cmpxchg / _starpu_xchg / _starpu_cmpxchgl /
328 * _starpu_xchgl / _starpu_cmpxchg64 / _starpu_xchg64, which only
329 * assembly-hand-written fallbacks used when building with an old gcc.
330 * Rather use STARPU_VAL_COMPARE_AND_SWAP and STARPU_VAL_EXCHANGE available on
331 * all platforms with a recent-enough gcc */
332
333#if defined(__i386__) || defined(__x86_64__)
334 static __starpu_inline unsigned _starpu_cmpxchg(unsigned *ptr, unsigned old, unsigned next)
335{
336 __asm__ __volatile__("lock cmpxchgl %2,%1": "+a" (old), "+m" (*ptr) : "q" (next) : "memory");
337 return old;
338}
339#define STARPU_HAVE_CMPXCHG
340 static __starpu_inline unsigned _starpu_xchg(unsigned *ptr, unsigned next)
341{
342 /* Note: xchg is always locked already */
343 __asm__ __volatile__("xchgl %1,%0": "+m" (*ptr), "+q" (next) : : "memory");
344 return next;
345}
346#define STARPU_HAVE_XCHG
347
348 static __starpu_inline uint32_t _starpu_cmpxchg32(uint32_t *ptr, uint32_t old, uint32_t next)
349{
350 __asm__ __volatile__("lock cmpxchgl %2,%1": "+a" (old), "+m" (*ptr) : "q" (next) : "memory");
351 return old;
352}
353#define STARPU_HAVE_CMPXCHG32
354 static __starpu_inline uint32_t _starpu_xchg32(uint32_t *ptr, uint32_t next)
355{
356 /* Note: xchg is always locked already */
357 __asm__ __volatile__("xchgl %1,%0": "+m" (*ptr), "+q" (next) : : "memory");
358 return next;
359}
360#define STARPU_HAVE_XCHG32
361
362#if defined(__i386__)
363 static __starpu_inline unsigned long _starpu_cmpxchgl(unsigned long *ptr, unsigned long old, unsigned long next)
364{
365 __asm__ __volatile__("lock cmpxchgl %2,%1": "+a" (old), "+m" (*ptr) : "q" (next) : "memory");
366 return old;
367}
368#define STARPU_HAVE_CMPXCHGL
369 static __starpu_inline unsigned long _starpu_xchgl(unsigned long *ptr, unsigned long next)
370{
371 /* Note: xchg is always locked already */
372 __asm__ __volatile__("xchgl %1,%0": "+m" (*ptr), "+q" (next) : : "memory");
373 return next;
374}
375#define STARPU_HAVE_XCHGL
376#endif
377
378#if defined(__x86_64__)
379 static __starpu_inline unsigned long _starpu_cmpxchgl(unsigned long *ptr, unsigned long old, unsigned long next)
380{
381 __asm__ __volatile__("lock cmpxchgq %2,%1": "+a" (old), "+m" (*ptr) : "q" (next) : "memory");
382 return old;
383}
384#define STARPU_HAVE_CMPXCHGL
385 static __starpu_inline unsigned long _starpu_xchgl(unsigned long *ptr, unsigned long next)
386{
387 /* Note: xchg is always locked already */
388 __asm__ __volatile__("xchgq %1,%0": "+m" (*ptr), "+q" (next) : : "memory");
389 return next;
390}
391#define STARPU_HAVE_XCHGL
392#endif
393
394#if defined(__i386__)
395 static __starpu_inline uint64_t _starpu_cmpxchg64(uint64_t *ptr, uint64_t old, uint64_t next)
396{
397 uint32_t next_hi = next >> 32;
398 uint32_t next_lo = next & 0xfffffffful;
399 __asm__ __volatile__("lock cmpxchg8b %1": "+A" (old), "+m" (*ptr) : "c" (next_hi), "b" (next_lo) : "memory");
400 return old;
401}
402#define STARPU_HAVE_CMPXCHG64
403#endif
404
405#if defined(__x86_64__)
406 static __starpu_inline uint64_t _starpu_cmpxchg64(uint64_t *ptr, uint64_t old, uint64_t next)
407{
408 __asm__ __volatile__("lock cmpxchgq %2,%1": "+a" (old), "+m" (*ptr) : "q" (next) : "memory");
409 return old;
410}
411#define STARPU_HAVE_CMPXCHG64
412 static __starpu_inline uint64_t _starpu_xchg64(uint64_t *ptr, uint64_t next)
413{
414 /* Note: xchg is always locked already */
415 __asm__ __volatile__("xchgq %1,%0": "+m" (*ptr), "+q" (next) : : "memory");
416 return next;
417}
418#define STARPU_HAVE_XCHG64
419#endif
420
421#endif
422
423#define STARPU_ATOMIC_SOMETHING(name,expr) \
424 static __starpu_inline unsigned starpu_atomic_##name(unsigned *ptr, unsigned value) \
425{ \
426 unsigned old, next; \
427 while (1) \
428 { \
429 old = *ptr; \
430 next = expr; \
431 if (_starpu_cmpxchg(ptr, old, next) == old) \
432 break; \
433 }; \
434 return expr; \
435}
436#define STARPU_ATOMIC_SOMETHINGL(name,expr) \
437 static __starpu_inline unsigned long starpu_atomic_##name##l(unsigned long *ptr, unsigned long value) \
438{ \
439 unsigned long old, next; \
440 while (1) \
441 { \
442 old = *ptr; \
443 next = expr; \
444 if (_starpu_cmpxchgl(ptr, old, next) == old) \
445 break; \
446 }; \
447 return expr; \
448}
449#define STARPU_ATOMIC_SOMETHING64(name,expr) \
450 static __starpu_inline uint64_t starpu_atomic_##name##64(uint64_t *ptr, uint64_t value) \
451{ \
452 uint64_t old, next; \
453 while (1) \
454 { \
455 old = *ptr; \
456 next = expr; \
457 if (_starpu_cmpxchg64(ptr, old, next) == old) \
458 break; \
459 }; \
460 return expr; \
461}
462
463/* Returns the new value */
464#ifdef STARPU_HAVE_SYNC_FETCH_AND_ADD
465#define STARPU_ATOMIC_ADD(ptr, value) (__sync_fetch_and_add ((ptr), (value)) + (value))
466#define STARPU_ATOMIC_ADDL(ptr, value) (__sync_fetch_and_add ((ptr), (value)) + (value))
467#define STARPU_ATOMIC_ADD64(ptr, value) (__sync_fetch_and_add ((ptr), (value)) + (value))
468#else
469#if defined(STARPU_HAVE_CMPXCHG)
470STARPU_ATOMIC_SOMETHING(add, old + value)
471#define STARPU_ATOMIC_ADD(ptr, value) starpu_atomic_add(ptr, value)
472#endif
473#if defined(STARPU_HAVE_CMPXCHGL)
474STARPU_ATOMIC_SOMETHINGL(add, old + value)
475#define STARPU_ATOMIC_ADDL(ptr, value) starpu_atomic_addl(ptr, value)
476#endif
477#if defined(STARPU_HAVE_CMPXCHG64)
478STARPU_ATOMIC_SOMETHING64(add, old + value)
479#define STARPU_ATOMIC_ADD64(ptr, value) starpu_atomic_add64(ptr, value)
480#endif
481#endif
482
483#ifdef STARPU_HAVE_SYNC_FETCH_AND_OR
484#define STARPU_ATOMIC_OR(ptr, value) (__sync_fetch_and_or ((ptr), (value)))
485#define STARPU_ATOMIC_ORL(ptr, value) (__sync_fetch_and_or ((ptr), (value)))
486#define STARPU_ATOMIC_OR64(ptr, value) (__sync_fetch_and_or ((ptr), (value)))
487#else
488#if defined(STARPU_HAVE_CMPXCHG)
489STARPU_ATOMIC_SOMETHING(or, old | value)
490#define STARPU_ATOMIC_OR(ptr, value) starpu_atomic_or(ptr, value)
491#endif
492#if defined(STARPU_HAVE_CMPXCHGL)
493STARPU_ATOMIC_SOMETHINGL(or, old | value)
494#define STARPU_ATOMIC_ORL(ptr, value) starpu_atomic_orl(ptr, value)
495#endif
496#if defined(STARPU_HAVE_CMPXCHG64)
497STARPU_ATOMIC_SOMETHING64(or, old | value)
498#define STARPU_ATOMIC_OR64(ptr, value) starpu_atomic_or64(ptr, value)
499#endif
500#endif
501
502/* Try to replace `old' with `value' at `ptr'. Returns true iff the swap was successful. */
503#ifdef STARPU_HAVE_SYNC_BOOL_COMPARE_AND_SWAP
504#define STARPU_BOOL_COMPARE_AND_SWAP(ptr, old, value) (__sync_bool_compare_and_swap ((ptr), (old), (value)))
505#define STARPU_BOOL_COMPARE_AND_SWAP32(ptr, old, value) STARPU_BOOL_COMPARE_AND_SWAP(ptr, old, value)
506#define STARPU_BOOL_COMPARE_AND_SWAP64(ptr, old, value) STARPU_BOOL_COMPARE_AND_SWAP(ptr, old, value)
507#else
508#ifdef STARPU_HAVE_CMPXCHG
509#define STARPU_BOOL_COMPARE_AND_SWAP(ptr, old, value) (_starpu_cmpxchg((ptr), (old), (value)) == (old))
510#endif
511#ifdef STARPU_HAVE_CMPXCHG32
512#define STARPU_BOOL_COMPARE_AND_SWAP32(ptr, old, value) (_starpu_cmpxchg32((ptr), (old), (value)) == (old))
513#endif
514#ifdef STARPU_HAVE_CMPXCHG64
515#define STARPU_BOOL_COMPARE_AND_SWAP64(ptr, old, value) (_starpu_cmpxchg64((ptr), (old), (value)) == (old))
516#endif
517#endif
518
519#if UINTPTR_MAX == UINT64_MAX
520#define STARPU_BOOL_COMPARE_AND_SWAP_PTR(ptr, old, value) STARPU_BOOL_COMPARE_AND_SWAP64(ptr, old, value)
521#else
522#define STARPU_BOOL_COMPARE_AND_SWAP_PTR(ptr, old, value) STARPU_BOOL_COMPARE_AND_SWAP32(ptr, old, value)
523#endif
524
525/* Try to replace `old' with `value' at `ptr'. Returns the value actually seen at `ptr'. */
526#ifdef STARPU_HAVE_SYNC_VAL_COMPARE_AND_SWAP
527#define STARPU_VAL_COMPARE_AND_SWAP(ptr, old, value) (__sync_val_compare_and_swap ((ptr), (old), (value)))
528#define STARPU_VAL_COMPARE_AND_SWAP32(ptr, old, value) STARPU_VAL_COMPARE_AND_SWAP(ptr, old, value)
529#define STARPU_VAL_COMPARE_AND_SWAP64(ptr, old, value) STARPU_VAL_COMPARE_AND_SWAP(ptr, old, value)
530#else
531#ifdef STARPU_HAVE_CMPXCHG
532#define STARPU_VAL_COMPARE_AND_SWAP(ptr, old, value) (_starpu_cmpxchg((ptr), (old), (value)))
533#endif
534#ifdef STARPU_HAVE_CMPXCHG32
535#define STARPU_VAL_COMPARE_AND_SWAP32(ptr, old, value) (_starpu_cmpxchg32((ptr), (old), (value)))
536#endif
537#ifdef STARPU_HAVE_CMPXCHG64
538#define STARPU_VAL_COMPARE_AND_SWAP64(ptr, old, value) (_starpu_cmpxchg64((ptr), (old), (value)))
539#endif
540#endif
541
542#if UINTPTR_MAX == UINT64_MAX
543#define STARPU_VAL_COMPARE_AND_SWAP_PTR(ptr, old, value) STARPU_VAL_COMPARE_AND_SWAP64(ptr, old, value)
544#else
545#define STARPU_VAL_COMPARE_AND_SWAP_PTR(ptr, old, value) STARPU_VAL_COMPARE_AND_SWAP32(ptr, old, value)
546#endif
547
548#ifdef STARPU_HAVE_ATOMIC_EXCHANGE_N
549#define STARPU_VAL_EXCHANGE(ptr, value) (__atomic_exchange_n((ptr), (value), __ATOMIC_SEQ_CST))
550#define STARPU_VAL_EXCHANGEL(ptr, value) STARPU_VAL_EXCHANGE((ptr) (value))
551#define STARPU_VAL_EXCHANGE32(ptr, value) STARPU_VAL_EXCHANGE((ptr) (value))
552#define STARPU_VAL_EXCHANGE64(ptr, value) STARPU_VAL_EXCHANGE((ptr) (value))
553#else
554#ifdef STARPU_HAVE_XCHG
555#define STARPU_VAL_EXCHANGE(ptr, value) (_starpu_xchg((ptr), (value)))
556#endif
557#ifdef STARPU_HAVE_XCHGL
558#define STARPU_VAL_EXCHANGEL(ptr, value) (_starpu_xchgl((ptr), (value)))
559#endif
560#ifdef STARPU_HAVE_XCHG32
561#define STARPU_VAL_EXCHANGE32(ptr, value) (_starpu_xchg32((ptr), (value)))
562#endif
563#ifdef STARPU_HAVE_XCHG64
564#define STARPU_VAL_EXCHANGE64(ptr, value) (_starpu_xchg64((ptr), (value)))
565#endif
566#endif
567
568/* Returns the previous value */
569#ifdef STARPU_HAVE_SYNC_LOCK_TEST_AND_SET
570#define STARPU_TEST_AND_SET(ptr, value) (__sync_lock_test_and_set ((ptr), (value)))
571#define STARPU_RELEASE(ptr) (__sync_lock_release ((ptr)))
572#elif defined(STARPU_HAVE_XCHG)
573#define STARPU_TEST_AND_SET(ptr, value) (_starpu_xchg((ptr), (value)))
574#define STARPU_RELEASE(ptr) (_starpu_xchg((ptr), 0))
575#endif
576
577#ifdef STARPU_HAVE_SYNC_SYNCHRONIZE
578#define STARPU_SYNCHRONIZE() __sync_synchronize()
579#elif defined(__i386__)
580#define STARPU_SYNCHRONIZE() __asm__ __volatile__("lock; addl $0,0(%%esp)" ::: "memory")
581#elif defined(__KNC__) || defined(__KNF__)
582#define STARPU_SYNCHRONIZE() __asm__ __volatile__("lock; addl $0,0(%%rsp)" ::: "memory")
583#elif defined(__x86_64__)
584#define STARPU_SYNCHRONIZE() __asm__ __volatile__("mfence" ::: "memory")
585#elif defined(__ppc__) || defined(__ppc64__)
586#define STARPU_SYNCHRONIZE() __asm__ __volatile__("sync" ::: "memory")
587#endif
588
592#if defined(__x86_64__)
593#define STARPU_RMB() __asm__ __volatile__("lfence" ::: "memory")
594#elif defined(__aarch64__)
595#define STARPU_RMB() __asm__ __volatile__("dsb ld" ::: "memory")
596#else
597#define STARPU_RMB() STARPU_SYNCHRONIZE()
598#endif
599
603#if defined(__x86_64__)
604#define STARPU_WMB() __asm__ __volatile__("sfence" ::: "memory")
605#elif defined(__aarch64__)
606#define STARPU_WMB() __asm__ __volatile__("dsb st" ::: "memory")
607#else
608#define STARPU_WMB() STARPU_SYNCHRONIZE()
609#endif
610
611#if defined(__i386__) || defined(__x86_64__)
612#define STARPU_CACHELINE_SIZE 64
613#elif defined(__ppc__) || defined(__ppc64__) || defined(__ia64__)
614#define STARPU_CACHELINE_SIZE 128
615#elif defined(__s390__) || defined(__s390x__)
616#define STARPU_CACHELINE_SIZE 256
617#else
618/* Conservative default */
619#define STARPU_CACHELINE_SIZE 1024
620#endif
621
622#ifdef _WIN32
623/* Try to fetch the system definition of timespec */
624#include <sys/types.h>
625#include <sys/stat.h>
626#ifdef HAVE_UNISTD_H
627#include <unistd.h>
628#endif
629#include <time.h>
630#if !defined(_MSC_VER) || defined(BUILDING_STARPU)
631#include <pthread.h>
632#endif
633#if !defined(STARPU_HAVE_STRUCT_TIMESPEC) || (defined(_MSC_VER) && _MSC_VER < 1900)
634/* If it didn't get defined in the standard places, then define it ourself */
635#ifndef STARPU_TIMESPEC_DEFINED
636#define STARPU_TIMESPEC_DEFINED 1
637 struct timespec
638{
639 time_t tv_sec; /* Seconds */
640 long tv_nsec; /* Nanoseconds */
641};
642#endif /* STARPU_TIMESPEC_DEFINED */
643#endif /* STARPU_HAVE_STRUCT_TIMESPEC */
644/* Fetch gettimeofday on mingw/cygwin */
645#if defined(__MINGW32__) || defined(__CYGWIN__)
646#include <sys/time.h>
647#endif
648#else
649#include <sys/time.h>
650#endif /* _WIN32 */
651
654#ifdef __cplusplus
655}
656#endif
657
658#endif /* __STARPU_UTIL_H__ */
starpu_config.h