/// <summary>
/// Gets the regions in this snapshot with a valid bit set.
/// </summary>
/// <returns>The regions in this snapshot with a valid bit set.</returns>
public IEnumerable <SnapshotRegion> GetValidRegions()
{
List <SnapshotRegion> validRegions = new List <SnapshotRegion>();
if (this.ValidBits == null)
{
return(validRegions);
}
for (Int32 startIndex = 0; startIndex < this.ValidBits.Length; startIndex += this.Alignment)
{
if (!this.ValidBits[startIndex])
{
continue;
}
// Get the length of this valid segment
Int32 validRegionSize = 0;
do
{
// We only care if the aligned elements are valid
validRegionSize += this.Alignment;
}while (startIndex + validRegionSize < this.ValidBits.Length && this.ValidBits[startIndex + validRegionSize]);
// Create new subregion from this valid region
SnapshotRegion subRegion = new SnapshotRegion(this.BaseAddress + startIndex, validRegionSize);
// Ensure region size is worth keeping. This can happen if we grab a misaligned segment
if (subRegion.RegionSize < Conversions.GetTypeSize(this.ElementType))
{
continue;
}
// Copy the current values and labels.
subRegion.SetCurrentValues(this.CurrentValues.LargestSubArray(startIndex, subRegion.RegionSize));
subRegion.SetPreviousValues(this.PreviousValues.LargestSubArray(startIndex, subRegion.RegionSize));
subRegion.SetElementLabels(this.ElementLabels.LargestSubArray(startIndex, subRegion.RegionSize));
validRegions.Add(subRegion);
startIndex += validRegionSize;
}
this.ValidBits = null;
return(validRegions);
}