mirror of
https://github.com/rclone/rclone.git
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76 lines
1.8 KiB
Go
76 lines
1.8 KiB
Go
// Copyright (C) 2015 Space Monkey, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build appengine
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package monkit
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import "sync"
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// TODO(jeff): make this mutex smaller scoped, perhaps based on the arguments
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// to compare and swap?
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var bigHonkinMutex sync.Mutex
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func loadFunc(addr **Func) (s *Func) {
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bigHonkinMutex.Lock()
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s = *addr
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bigHonkinMutex.Unlock()
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return s
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}
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func compareAndSwapFunc(addr **Func, old, new *Func) bool {
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bigHonkinMutex.Lock()
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val := *addr
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if val == old {
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*addr = new
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bigHonkinMutex.Unlock()
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return true
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}
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bigHonkinMutex.Unlock()
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return false
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}
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func loadTraceWatcherRef(addr **traceWatcherRef) (val *traceWatcherRef) {
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bigHonkinMutex.Lock()
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val = *addr
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bigHonkinMutex.Unlock()
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return val
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}
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func storeTraceWatcherRef(addr **traceWatcherRef, val *traceWatcherRef) {
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bigHonkinMutex.Lock()
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*addr = val
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bigHonkinMutex.Unlock()
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}
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func compareAndSwapSpanObserverTuple(addr **spanObserverTuple,
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old, new *spanObserverTuple) bool {
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bigHonkinMutex.Lock()
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val := *addr
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if val == old {
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*addr = new
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bigHonkinMutex.Unlock()
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return true
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}
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bigHonkinMutex.Unlock()
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return false
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}
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func loadSpanObserverTuple(addr **spanObserverTuple) (val *spanObserverTuple) {
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bigHonkinMutex.Lock()
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val = *addr
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bigHonkinMutex.Unlock()
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return val
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}
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