289b30715d
This commit converts the dependency management from Godeps to the vendor folder, also switching the tool from godep to trash. Since the upstream tool lacks a few features proposed via a few PRs, until those PRs are merged in (if), use github.com/karalabe/trash. You can update dependencies via trash --update. All dependencies have been updated to their latest version. Parts of the build system are reworked to drop old notions of Godeps and invocation of the go vet command so that it doesn't run against the vendor folder, as that will just blow up during vetting. The conversion drops OpenCL (and hence GPU mining support) from ethash and our codebase. The short reasoning is that there's noone to maintain and having opencl libs in our deps messes up builds as go install ./... tries to build them, failing with unsatisfied link errors for the C OpenCL deps. golang.org/x/net/context is not vendored in. We expect it to be fetched by the user (i.e. using go get). To keep ci.go builds reproducible the package is "vendored" in build/_vendor.
92 lines
2.5 KiB
Go
Executable File
92 lines
2.5 KiB
Go
Executable File
// CookieJar - A contestant's algorithm toolbox
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// Copyright (c) 2013 Peter Szilagyi. All rights reserved.
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//
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// CookieJar is dual licensed: use of this source code is governed by a BSD
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// license that can be found in the LICENSE file. Alternatively, the CookieJar
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// toolbox may be used in accordance with the terms and conditions contained
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// in a signed written agreement between you and the author(s).
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package prque
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// The size of a block of data
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const blockSize = 4096
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// A prioritized item in the sorted stack.
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type item struct {
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value interface{}
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priority float32
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}
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// Internal sortable stack data structure. Implements the Push and Pop ops for
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// the stack (heap) functionality and the Len, Less and Swap methods for the
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// sortability requirements of the heaps.
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type sstack struct {
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size int
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capacity int
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offset int
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blocks [][]*item
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active []*item
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}
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// Creates a new, empty stack.
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func newSstack() *sstack {
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result := new(sstack)
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result.active = make([]*item, blockSize)
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result.blocks = [][]*item{result.active}
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result.capacity = blockSize
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return result
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}
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// Pushes a value onto the stack, expanding it if necessary. Required by
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// heap.Interface.
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func (s *sstack) Push(data interface{}) {
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if s.size == s.capacity {
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s.active = make([]*item, blockSize)
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s.blocks = append(s.blocks, s.active)
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s.capacity += blockSize
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s.offset = 0
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} else if s.offset == blockSize {
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s.active = s.blocks[s.size/blockSize]
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s.offset = 0
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}
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s.active[s.offset] = data.(*item)
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s.offset++
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s.size++
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}
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// Pops a value off the stack and returns it. Currently no shrinking is done.
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// Required by heap.Interface.
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func (s *sstack) Pop() (res interface{}) {
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s.size--
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s.offset--
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if s.offset < 0 {
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s.offset = blockSize - 1
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s.active = s.blocks[s.size/blockSize]
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}
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res, s.active[s.offset] = s.active[s.offset], nil
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return
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}
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// Returns the length of the stack. Required by sort.Interface.
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func (s *sstack) Len() int {
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return s.size
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}
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// Compares the priority of two elements of the stack (higher is first).
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// Required by sort.Interface.
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func (s *sstack) Less(i, j int) bool {
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return s.blocks[i/blockSize][i%blockSize].priority > s.blocks[j/blockSize][j%blockSize].priority
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}
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// Swaps two elements in the stack. Required by sort.Interface.
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func (s *sstack) Swap(i, j int) {
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ib, io, jb, jo := i/blockSize, i%blockSize, j/blockSize, j%blockSize
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s.blocks[ib][io], s.blocks[jb][jo] = s.blocks[jb][jo], s.blocks[ib][io]
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}
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// Resets the stack, effectively clearing its contents.
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func (s *sstack) Reset() {
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*s = *newSstack()
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}
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