github.com/scaleoutsean/fusego@v0.0.0-20220224074057-4a6429e46bb8/internal/buffer/runtime.go (about)

     1  // Copyright 2015 Google Inc. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package buffer
    16  
    17  import "unsafe"
    18  
    19  //go:noescape
    20  
    21  // Zero the n bytes starting at p.
    22  //
    23  // REQUIRES: the region does not contain any Go pointers.
    24  //go:linkname jacobsa_fuse_memclr runtime.memclrNoHeapPointers
    25  func jacobsa_fuse_memclr(p unsafe.Pointer, n uintptr)
    26  
    27  //go:noescape
    28  
    29  // Copy from src to dst, allowing overlap.
    30  //go:linkname jacobsa_fuse_memmove runtime.memmove
    31  func jacobsa_fuse_memmove(dst unsafe.Pointer, src unsafe.Pointer, n uintptr)