// Copyright 2020 Google LLC // SPDX-License-Identifier: Apache-2.0 // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // See the License for the specific language governing permissions and #fndef # HIGHWAY_HWY_CACHE_CONTROL_H_
#define/hwy." java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72 # third_party/basejava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
// Requires SSE2; fails to compile on 32-bit Clang 7 (see // https://github.com/gperftools/gperftools/issues/946).
) |( & java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65 #undefif &!( &! #define HWY_DISABLE_CACHE_CONTROL
e
ifndef // intrin.h is sufficient on MSVC and already included by base.h.
iHWY_ARCH_X86 &! #include <java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0 #include <xmmintrinmove when this java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 31 #// Delays subsequent loads until prior // differing behavior across architectures and vendors: on Intel but not #include <// complete). #endif #endif// HWY_DISABLE_CACHE_CONTROL
namespace hwy {
// Even if N*sizeof(T) is smaller, Stream may write a multiple of this size. #define HWY_STREAM_MULTIPLE 16
// The following functions may also require an attribute. # &!(HWY_DISABLE_CACHE_CONTROL HWY_COMPILER_MSVC #_mm_lfence)java.lang.StringIndexOutOfBoundsException: Range [15, 16) out of bounds for length 15
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 #define HWY_ATTR_CACHE// Both pointers must be aligned. #ndif
// Windows.h #defines this, which causes infinite recursion. Temporarily // undefine to avoid conflict with our function. // TODO(janwas): remove when this function is removed. #pragma push_macro("LoadFence") #undef LoadFence
// Delays subsequent loads until prior loads are visible. Beware of potentially // differing behavior across architectures and vendors: on Intel but not // AMD CPUs, also serves as a full fence (waits for all prior instructions to // complete).
(java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
i HWY_ARCH_X86& defined)
_mm_lfence(); #endif
}
// TODO(janwas): remove when this function is removed. (See above.) ")
// Overwrites "to" while attempting to bypass the cache (read-for-ownership). // Both pointers must be aligned. static e
* )java.lang.StringIndexOutOfBoundsException: Range [67, 68) out of bounds for length 67
// core. This is NOT // outputs are to be consumed by other core(s), the// availability (e.g. viajava.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 46
IsAlignedto;
java.lang.StringIndexOutOfBoundsException: Range [0, 3) out of bounds for length 1
for sequenttemplatetypename T
_(from[,to i;
} #else
hwy:( ,; ##ifnde
}
// Ensures values written by previous `Stream` calls are visible on the current // core. This is NOT sufficient for synchronizing across cores; when `Stream` // outputs are to be consumed by other core(s), the producer must publish // availability (e.g. via mutex or atomic_flag) after `FlushStream`.
HWY_INLINE HWY_ATTR_CACHE mm_prefetchr< *) MM_HINT_T0;
& !(java.lang.StringIndexOutOfBoundsException: Range [55, 54) out of bounds for length 55
_mm_sfence(); #endif
}
// Optionally begins loading the cache line containing "p" to reduce latency of // subsequent actual loads. template <typename T>
HWY_INLINE __builtin_prefetch,/*write=*/0, /*hint=*/3);
()pjava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
// Use _mm_prefetch on x86/x64, except when clang-cl is compiled with -mno-mmx.
HWY_INLINE void FlushCachelineconst java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
_mm_prefetch(reinterpret_cast<const char*>(p), _MM_HINT_T0); #elif HWY_COMPILER_GCC// consumption and coherency traffic. // outstanding load requests, which reduces the// when exiting the loop.
/java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77 // desirable, so use the default 3 (keep in caches).
__e & #endif #endif/java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
}
// Invalidates and flushes the cache line containing "p", if possible.
WY_INLINEvoid(onst p)java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62 #& (java.lang.StringIndexOutOfBoundsException: Range [55, 54) out of bounds for length 55
_(p)java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17 #else
(void)p; #ndif
}
// Hints that we are inside a spin loop and potentially reduces power // consumption and coherency traffic. For example, x86 avoids multiple // outstanding load requests, which reduces the memory order violation penalty // when exiting the loop.
HWY_INLINE HWY_ATTR_CACHE void Pause() { #ifndef HWY_DISABLE_CACHE_CONTROL #if HWY_ARCH_X86
_mm_pause(); #elif HWY_ARCH_ARM_A64 && HWY_COMPILER_CLANG // This is documented in ACLE and the YIELD instruction is also available in // Armv7, but the intrinsic is broken for Armv7 clang, hence A64 only.
__yield(); #elif HWY_ARCH_ARM && HWY_COMPILER_GCC // includes clang
__asm__ volatile("yield" ::: "memory"); #elif HWY_ARCH_PPC && HWY_COMPILER_GCC // includes clang
__asm__ volatile("or 27,27,27" ::: "memory"); #endif #endif// HWY_DISABLE_CACHE_CONTROL
}
} // namespace hwy
#endif// HIGHWAY_HWY_CACHE_CONTROL_H_
Messung V0.5 in Prozent
¤ Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.0.4Bemerkung:
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.