45 lines
1.3 KiB
Plaintext
45 lines
1.3 KiB
Plaintext
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///////////////////////////////////////////////////////////////////////////////
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//
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// Microsoft Research Singularity
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// File: SeattleTrafficProxyContract.sg
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// Note: Contract definition for the Seattle Traffic service
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//
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using Microsoft.Singularity.Directory;
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using Microsoft.Singularity.Channels;
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namespace Microsoft.Singularity.SeattleTrafficProxy.Contracts
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{
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public rep struct TrafficInfo {
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// There is a lot of traffic data. For now, we'll just provide
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// the bottlenecks and the approximate lat/long for their center.
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public int minUntilFree; // estimate of time until the bottleneck clears
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public float latitude;
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public float longitude;
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}
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public contract SeattleTrafficProxyContract : ServiceContract
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{
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public const string ModuleName = "/dev/SeattleTrafficProxy";
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// Signal our identity
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out message Ready();
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in message GetTraffic();
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out message Traffic(TrafficInfo[]! in ExHeap trafficInfo);
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override state Start : one
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{
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Ready! -> ReadyState;
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}
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state ReadyState : one
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{
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GetTraffic? -> Traffic! -> ReadyState;
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}
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}
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}
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