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71029cea2d
This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>
33 lines
609 B
Go
33 lines
609 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package syncs
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import (
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"sync"
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)
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// AssertLocked panics if m is not locked.
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func AssertLocked(m *sync.Mutex) {
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if m.TryLock() {
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m.Unlock()
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panic("mutex is not locked")
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}
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}
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// AssertRLocked panics if rw is not locked for reading or writing.
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func AssertRLocked(rw *sync.RWMutex) {
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if rw.TryLock() {
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rw.Unlock()
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panic("mutex is not locked")
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}
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}
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// AssertWLocked panics if rw is not locked for writing.
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func AssertWLocked(rw *sync.RWMutex) {
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if rw.TryRLock() {
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rw.RUnlock()
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panic("mutex is not rlocked")
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}
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}
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