9f82b75e57
* removed packer.Cache and references since packer.Cache is never used except in the download step. The download step now uses the new func packer.CachePath(targetPath) for this, the behavior is the same. * removed download code from packer that was reimplemented into the go-getter library: progress bar, http download restart, checksuming from file, skip already downloaded files, symlinking, make a download cancellable by context. * on windows if packer is running without symlinking rights and we are getting a local file, the file will be copied instead to avoid errors. * added unit tests for step_download that are now CI tested on windows, mac & linux. * files are now downloaded under cache dir `sha1(filename + "?checksum=" + checksum) + file_extension` * since the output dir is based on the source url and the checksum, when the checksum fails, the file is auto deleted. * a download file is protected and locked by a file lock, * updated docs * updated go modules and vendors
44 lines
613 B
Go
44 lines
613 B
Go
package yamux
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import (
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"sync"
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"time"
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)
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var (
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timerPool = &sync.Pool{
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New: func() interface{} {
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timer := time.NewTimer(time.Hour * 1e6)
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timer.Stop()
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return timer
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},
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}
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)
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// asyncSendErr is used to try an async send of an error
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func asyncSendErr(ch chan error, err error) {
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if ch == nil {
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return
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}
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select {
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case ch <- err:
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default:
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}
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}
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// asyncNotify is used to signal a waiting goroutine
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func asyncNotify(ch chan struct{}) {
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select {
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case ch <- struct{}{}:
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default:
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}
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}
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// min computes the minimum of two values
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func min(a, b uint32) uint32 {
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if a < b {
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return a
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}
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return b
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}
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