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private static readonly int __staticMachine = (GetMachineHash() + GetAppDomainId()) & 0x00ffffff;
private static readonly short __staticPid = GetPid();
private static int __staticIncrement = (new Random()).Next();
// public static methods
/// <summary>
/// Generates a new ObjectId with a unique value.
/// </summary>
/// <returns>An ObjectId.</returns>
public static ObjectId GenerateNewId()
{
return GenerateNewId(GetTimestampFromDateTime(DateTime.UtcNow));
}
/// <summary>
/// Generates a new ObjectId with a unique value (with the timestamp component based on a given DateTime).
/// </summary>
/// <param name="timestamp">The timestamp component (expressed as a DateTime).</param>
/// <returns>An ObjectId.</returns>
public static ObjectId GenerateNewId(DateTime timestamp)
{
return GenerateNewId(GetTimestampFromDateTime(timestamp));
}
/// <summary>
/// Generates a new ObjectId with a unique value (with the given timestamp).
/// </summary>
/// <param name="timestamp">The timestamp component.</param>
/// <returns>An ObjectId.</returns>
public static ObjectId GenerateNewId(int timestamp)
{
int increment = Interlocked.Increment(ref __staticIncrement) & 0x00ffffff; // only use low order 3 bytes
return new ObjectId(timestamp, __staticMachine, __staticPid, increment);
}
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