singrdk/base/Services/RamDisk/Contracts/RamDiskClientContract.sg

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2008-11-17 18:29:00 -05:00
///////////////////////////////////////////////////////////////////////////////
//
// Microsoft Research Singularity
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// File: RamDiskClientContract.sg
//
// Note: Contract between the RAM disk client manager and a single RAM disk device.
//
using System;
using Microsoft.Singularity.Channels;
using Microsoft.SingSharp;
using Microsoft.Singularity.Directory;
namespace Microsoft.Singularity.Services.RamDisk.Contracts
{
public contract RamDiskClientContract
{
in message Create(char []! in ExHeap diskName, ulong diskSizeBytes);
out message Success();
out message Fail(RamDiskContractErrorCode reason);
in message Destroy(bool force);
state Start : one {
Create? -> CreatePending;
}
state CreatePending : one {
Success! -> Running;
Fail! -> Done;
}
state Running : one {
Destroy? -> DestroyPending;
}
state DestroyPending : one {
Fail! -> Running;
Success! -> Done;
}
state Done : one {
}
}
}