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Source file src/sync/atomic/64bit_arm.go

Documentation: sync/atomic

     1  // Copyright 2012 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package atomic
     6  
     7  func loadUint64(addr *uint64) (val uint64) {
     8  	for {
     9  		val = *addr
    10  		if CompareAndSwapUint64(addr, val, val) {
    11  			break
    12  		}
    13  	}
    14  	return
    15  }
    16  
    17  func storeUint64(addr *uint64, val uint64) {
    18  	for {
    19  		old := *addr
    20  		if CompareAndSwapUint64(addr, old, val) {
    21  			break
    22  		}
    23  	}
    24  	return
    25  }
    26  
    27  func addUint64(val *uint64, delta uint64) (new uint64) {
    28  	for {
    29  		old := *val
    30  		new = old + delta
    31  		if CompareAndSwapUint64(val, old, new) {
    32  			break
    33  		}
    34  	}
    35  	return
    36  }
    37  
    38  func swapUint64(addr *uint64, new uint64) (old uint64) {
    39  	for {
    40  		old = *addr
    41  		if CompareAndSwapUint64(addr, old, new) {
    42  			break
    43  		}
    44  	}
    45  	return
    46  }
    47  
    48  // Additional ARM-specific assembly routines.
    49  // Declaration here to give assembly routines correct stack maps for arguments.
    50  func armCompareAndSwapUint32(addr *uint32, old, new uint32) (swapped bool)
    51  func armCompareAndSwapUint64(addr *uint64, old, new uint64) (swapped bool)
    52  func generalCAS64(addr *uint64, old, new uint64) (swapped bool)
    53  func armAddUint32(addr *uint32, delta uint32) (new uint32)
    54  func armAddUint64(addr *uint64, delta uint64) (new uint64)
    55  func armSwapUint32(addr *uint32, new uint32) (old uint32)
    56  func armSwapUint64(addr *uint64, new uint64) (old uint64)
    57  func armLoadUint64(addr *uint64) (val uint64)
    58  func armStoreUint64(addr *uint64, val uint64)
    59  

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