diff options
Diffstat (limited to 'vendor/codeberg.org/gruf/go-mempool')
| -rw-r--r-- | vendor/codeberg.org/gruf/go-mempool/LICENSE | 9 | ||||
| -rw-r--r-- | vendor/codeberg.org/gruf/go-mempool/README.md | 3 | ||||
| -rw-r--r-- | vendor/codeberg.org/gruf/go-mempool/pool.go | 139 | ||||
| -rw-r--r-- | vendor/codeberg.org/gruf/go-mempool/simple.go | 111 |
4 files changed, 0 insertions, 262 deletions
diff --git a/vendor/codeberg.org/gruf/go-mempool/LICENSE b/vendor/codeberg.org/gruf/go-mempool/LICENSE deleted file mode 100644 index d6f08d0ab..000000000 --- a/vendor/codeberg.org/gruf/go-mempool/LICENSE +++ /dev/null @@ -1,9 +0,0 @@ -MIT License - -Copyright (c) gruf - -Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/vendor/codeberg.org/gruf/go-mempool/README.md b/vendor/codeberg.org/gruf/go-mempool/README.md deleted file mode 100644 index 1acc23d26..000000000 --- a/vendor/codeberg.org/gruf/go-mempool/README.md +++ /dev/null @@ -1,3 +0,0 @@ -# go-mempool - -very simple memory pool implementation diff --git a/vendor/codeberg.org/gruf/go-mempool/pool.go b/vendor/codeberg.org/gruf/go-mempool/pool.go deleted file mode 100644 index 5bb80234c..000000000 --- a/vendor/codeberg.org/gruf/go-mempool/pool.go +++ /dev/null @@ -1,139 +0,0 @@ -package mempool - -import ( - "sync" - "sync/atomic" - "unsafe" - - "golang.org/x/sys/cpu" -) - -// Pool provides a form of SimplePool -// with the addition of concurrency safety. -type Pool[T any] struct { - UnsafePool - - // New is an optionally provided - // allocator used when no value - // is available for use in pool. - New func() T - - // Reset is an optionally provided - // value resetting function called - // on passed value to Put(). - Reset func(T) bool -} - -func NewPool[T any](new func() T, reset func(T) bool, check func(current, victim int) bool) Pool[T] { - return Pool[T]{ - New: new, - Reset: reset, - UnsafePool: NewUnsafePool(check), - } -} - -func (p *Pool[T]) Get() T { - if ptr := p.UnsafePool.Get(); ptr != nil { - return *(*T)(ptr) - } - var t T - if p.New != nil { - t = p.New() - } - return t -} - -func (p *Pool[T]) Put(t T) { - if p.Reset != nil && !p.Reset(t) { - return - } - ptr := unsafe.Pointer(&t) - p.UnsafePool.Put(ptr) -} - -// UnsafePool provides a form of UnsafeSimplePool -// with the addition of concurrency safety. -type UnsafePool struct { - internal - _ [cache_line_size - unsafe.Sizeof(internal{})%cache_line_size]byte -} - -func NewUnsafePool(check func(current, victim int) bool) UnsafePool { - return UnsafePool{internal: internal{ - pool: UnsafeSimplePool{Check: check}, - }} -} - -const ( - // current platform integer size. - int_size = 32 << (^uint(0) >> 63) - - // platform CPU cache line size to avoid false sharing. - cache_line_size = unsafe.Sizeof(cpu.CacheLinePad{}) -) - -type internal struct { - // fast-access ring-buffer of - // pointers accessible by index. - // - // if Go ever exposes goroutine IDs - // to us we can make this a lot faster. - ring [int_size / 4]unsafe.Pointer - index atomic.Uint64 - - // underlying pool and - // slow mutex protection. - pool UnsafeSimplePool - mutex sync.Mutex -} - -func (p *internal) Check(fn func(current, victim int) bool) func(current, victim int) bool { - p.mutex.Lock() - if fn == nil { - if p.pool.Check == nil { - fn = defaultCheck - } else { - fn = p.pool.Check - } - } else { - p.pool.Check = fn - } - p.mutex.Unlock() - return fn -} - -func (p *internal) Get() unsafe.Pointer { - if ptr := atomic.SwapPointer(&p.ring[p.index.Load()%uint64(cap(p.ring))], nil); ptr != nil { - p.index.Add(^uint64(0)) // i.e. -1 - return ptr - } - p.mutex.Lock() - ptr := p.pool.Get() - p.mutex.Unlock() - return ptr -} - -func (p *internal) Put(ptr unsafe.Pointer) { - if atomic.CompareAndSwapPointer(&p.ring[p.index.Add(1)%uint64(cap(p.ring))], nil, ptr) { - return - } - p.mutex.Lock() - p.pool.Put(ptr) - p.mutex.Unlock() -} - -func (p *internal) GC() { - for i := range p.ring { - atomic.StorePointer(&p.ring[i], nil) - } - p.mutex.Lock() - p.pool.GC() - p.mutex.Unlock() -} - -func (p *internal) Size() int { - p.mutex.Lock() - sz := p.pool.Size() - p.mutex.Unlock() - return sz -} diff --git a/vendor/codeberg.org/gruf/go-mempool/simple.go b/vendor/codeberg.org/gruf/go-mempool/simple.go deleted file mode 100644 index c9f459890..000000000 --- a/vendor/codeberg.org/gruf/go-mempool/simple.go +++ /dev/null @@ -1,111 +0,0 @@ -package mempool - -import ( - "unsafe" -) - -// SimplePool provides a type-safe form -// of UnsafePool using generics. -// -// Note it is NOT safe for concurrent -// use, you must protect it yourself! -type SimplePool[T any] struct { - UnsafeSimplePool - - // New is an optionally provided - // allocator used when no value - // is available for use in pool. - New func() T - - // Reset is an optionally provided - // value resetting function called - // on passed value to Put(). - Reset func(T) bool -} - -func (p *SimplePool[T]) Get() T { - if ptr := p.UnsafeSimplePool.Get(); ptr != nil { - return *(*T)(ptr) - } - var t T - if p.New != nil { - t = p.New() - } - return t -} - -func (p *SimplePool[T]) Put(t T) { - if p.Reset != nil && !p.Reset(t) { - return - } - ptr := unsafe.Pointer(&t) - p.UnsafeSimplePool.Put(ptr) -} - -// UnsafeSimplePool provides an incredibly -// simple memory pool implementation -// that stores ptrs to memory values, -// and regularly flushes internal pool -// structures according to CheckGC(). -// -// Note it is NOT safe for concurrent -// use, you must protect it yourself! -type UnsafeSimplePool struct { - - // Check determines how often to flush - // internal pools based on underlying - // current and victim pool sizes. It gets - // called on every pool Put() operation. - // - // A flush will start a new current - // pool, make victim the old current, - // and drop the existing victim pool. - Check func(current, victim int) bool - - current []unsafe.Pointer - victim []unsafe.Pointer -} - -func (p *UnsafeSimplePool) Get() unsafe.Pointer { - // First try current list. - if len(p.current) > 0 { - ptr := p.current[len(p.current)-1] - p.current = p.current[:len(p.current)-1] - return ptr - } - - // Fallback to victim. - if len(p.victim) > 0 { - ptr := p.victim[len(p.victim)-1] - p.victim = p.victim[:len(p.victim)-1] - return ptr - } - - return nil -} - -func (p *UnsafeSimplePool) Put(ptr unsafe.Pointer) { - p.current = append(p.current, ptr) - - // Get GC check func. - if p.Check == nil { - p.Check = defaultCheck - } - - if p.Check(len(p.current), len(p.victim)) { - p.GC() // garbage collection time! - } -} - -func (p *UnsafeSimplePool) GC() { - p.victim = p.current - p.current = nil -} - -func (p *UnsafeSimplePool) Size() int { - return len(p.current) + len(p.victim) -} - -func defaultCheck(current, victim int) bool { - return current-victim > 128 || victim > 256 -} |
