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moby--moby/libcontainerd/process_windows.go
Tonis Tiigi 6d26464502 Fix issues with fifos blocking on open
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
2016-10-20 17:02:02 -07:00

54 lines
1.3 KiB
Go

package libcontainerd
import (
"io"
"sync"
"github.com/Microsoft/hcsshim"
"github.com/docker/docker/pkg/ioutils"
)
// process keeps the state for both main container process and exec process.
type process struct {
processCommon
// Platform specific fields are below here.
// commandLine is to support returning summary information for docker top
commandLine string
hcsProcess hcsshim.Process
}
type autoClosingReader struct {
io.ReadCloser
sync.Once
}
func (r *autoClosingReader) Read(b []byte) (n int, err error) {
n, err = r.ReadCloser.Read(b)
if err == io.EOF {
r.Once.Do(func() { r.ReadCloser.Close() })
}
return
}
func createStdInCloser(pipe io.WriteCloser, process hcsshim.Process) io.WriteCloser {
return ioutils.NewWriteCloserWrapper(pipe, func() error {
if err := pipe.Close(); err != nil {
return err
}
// We do not need to lock container ID here, even though
// we are calling into hcsshim. This is safe, because the
// only place that closes this process handle is this method.
err := process.CloseStdin()
if err != nil && !hcsshim.IsNotExist(err) {
// This error will occur if the compute system is currently shutting down
if perr, ok := err.(*hcsshim.ProcessError); ok && perr.Err != hcsshim.ErrVmcomputeOperationInvalidState {
return err
}
}
return err
})
}