1 files changed, 0 insertions, 114 deletions
diff --git a/syncutil/cachemap.go b/syncutil/cachemap.go
deleted file mode 100644
index 8c4dfc5..0000000
--- a/syncutil/cachemap.go
+++ /dev/null
@@ -1,114 +0,0 @@
-// Copyright (C) 2023  Luke Shumaker <lukeshu@lukeshu.com>
-//
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-package syncutil
-
-import (
-	"git.lukeshu.com/go/containers/typedsync"
-)
-
-type cacheVal[V any] struct {
-	wg typedsync.WaitGroup
-	v  V
-}
-
-// The techniques used by CacheMap are similar to the techniques used
-// by encoding/json's type cache.
-
-// A CacheMap is similar to a typedsync.Map, but also has a
-// .LoadOrCompute sibling to .LoadOrStore.  This is useful for caching
-// the results of computation where it is undesirable for concurrent
-// calls to duplicate work.
-//
-// Compared to a plain typedsync.Map, a CacheMap has both more space
-// overhead and more time overhead.
-type CacheMap[K mapkey, V any] struct {
-	inner typedsync.Map[K, *cacheVal[V]]
-	pool  typedsync.Pool[*cacheVal[V]]
-}
-
-func (m *CacheMap[K, V]) Delete(key K) {
-	m.inner.Delete(key)
-}
-
-// Load returns the value stored in the map for a key.  If the value
-// for that key is actively being computed by LoadOrCompute, this
-// blocks until the value has been computed.
-func (m *CacheMap[K, V]) Load(key K) (value V, ok bool) {
-	_value, ok := m.inner.Load(key)
-	if !ok {
-		var zero V
-		return zero, false
-	}
-	_value.wg.Wait()
-	return _value.v, true
-}
-
-// LoadAndDelete deletes the value for a key, returning the previous
-// value if any.  The loaded result reports whether the key was
-// present.  If the value for that key was actively being computed by
-// LoadOrCompute, this immediately removes the partial value from the
-// CacheMap, but does not return until the computation has finished.
-func (m *CacheMap[K, V]) LoadAndDelete(key K) (value V, loaded bool) {
-	_value, ok := m.inner.LoadAndDelete(key)
-	if !ok {
-		var zero V
-		return zero, false
-	}
-	_value.wg.Wait()
-	return _value.v, true
-}
-
-// LoadOrStore returns the existing value for the key if
-// present. Otherwise, it stores and returns the given value.  The
-// loaded result is true if the value was loaded, false if stored.  If
-// the value for that key is actively being computed by LoadOrCompute,
-// this blocks until the value has been computed.
-func (m *CacheMap[K, V]) LoadOrStore(key K, value V) (actual V, loaded bool) {
-	_value, _ := m.pool.Get()
-	if _value == nil {
-		_value = new(cacheVal[V])
-	}
-	_value.v = value
-	_actual, loaded := m.inner.LoadOrStore(key, _value)
-	if loaded {
-		*_value = cacheVal[V]{}
-		m.pool.Put(_value)
-		_actual.wg.Wait()
-	}
-	return _actual.v, loaded
-}
-
-// LoadOrCompute returns the existing value for the key if present.
-// Otherwise, it computes and stores a value using the given function.
-// The loaded result is true if the value was loaded, false if
-// computed.  If a prior call to LoadOrCompute is still computing the
-// value for that key, a latter call blocks until the computation is
-// complete, and then returns the initial call's value.
-func (m *CacheMap[K, V]) LoadOrCompute(key K, fn func(K) V) (actual V, loaded bool) {
-	_value, _ := m.pool.Get()
-	if _value == nil {
-		_value = new(cacheVal[V])
-	}
-	_value.wg.Add(1)
-	_actual, loaded := m.inner.LoadOrStore(key, _value)
-	if loaded {
-		*_value = cacheVal[V]{}
-		m.pool.Put(_value)
-		_actual.wg.Wait()
-	} else {
-		_actual.v = fn(key)
-		_actual.wg.Done()
-	}
-	return _actual.v, loaded
-}
-
-func (m *CacheMap[K, V]) Store(key K, value V) {
-	_value, _ := m.pool.Get()
-	if _value == nil {
-		_value = new(cacheVal[V])
-	}
-	_value.v = value
-	m.inner.Store(key, _value)
-}