go-ceph/internal/cutil/sync_buffer.go

30 lines
621 B
Go

//go:build !no_ptrguard
// +build !no_ptrguard
package cutil
import (
"unsafe"
)
// SyncBuffer is a C buffer connected to a data slice
type SyncBuffer struct {
pg *PtrGuard
}
// NewSyncBuffer creates a C buffer from a data slice and stores it at CPtr
func NewSyncBuffer(cPtr CPtr, data []byte) *SyncBuffer {
var v SyncBuffer
v.pg = NewPtrGuard(cPtr, unsafe.Pointer(&data[0]))
return &v
}
// Release releases the C buffer and nulls its stored pointer
func (v *SyncBuffer) Release() {
v.pg.Release()
}
// Sync asserts that changes in the C buffer are available in the data
// slice
func (*SyncBuffer) Sync() {}