mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
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60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
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// Copyright 2020 The LevelDB-Go and Pebble Authors. All rights reserved. Use
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// of this source code is governed by a BSD-style license that can be found in
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// the LICENSE file.
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//go:build !tracing
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// +build !tracing
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package cache
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import (
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"fmt"
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"sync/atomic"
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"github.com/cockroachdb/redact"
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)
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// refcnt provides an atomic reference count. This version is used when the
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// "tracing" build tag is not enabled. See refcnt_tracing.go for the "tracing"
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// enabled version.
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type refcnt struct {
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val atomic.Int32
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}
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// initialize the reference count to the specified value.
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func (v *refcnt) init(val int32) {
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v.val.Store(val)
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}
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func (v *refcnt) refs() int32 {
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return v.val.Load()
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}
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func (v *refcnt) acquire() {
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switch v := v.val.Add(1); {
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case v <= 1:
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panic(redact.Safe(fmt.Sprintf("pebble: inconsistent reference count: %d", v)))
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}
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}
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func (v *refcnt) release() bool {
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switch v := v.val.Add(-1); {
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case v < 0:
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panic(redact.Safe(fmt.Sprintf("pebble: inconsistent reference count: %d", v)))
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case v == 0:
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return true
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default:
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return false
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}
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}
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func (v *refcnt) trace(msg string) {
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}
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func (v *refcnt) traces() string {
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return ""
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}
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// Silence unused warning.
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var _ = (*refcnt)(nil).traces
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