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Fallback when server launch fail due to create mutex error #8000

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Sep 24, 2022
Merged

Fallback when server launch fail due to create mutex error #8000

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29 changes: 15 additions & 14 deletions src/Build/BackEnd/Client/MSBuildClient.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -390,7 +390,7 @@ private void ConfigureAndQueryConsoleProperties()

return (acceptAnsiColorCodes: acceptAnsiColorCodes, outputIsScreen: outputIsScreen);
}

private int QueryConsoleBufferWidth()
{
int consoleBufferWidth = -1;
Expand Down Expand Up @@ -454,22 +454,23 @@ private bool TrySendPacket(Func<INodePacket> packetResolver)
private bool TryLaunchServer()
{
string serverLaunchMutexName = $@"Global\msbuild-server-launch-{_handshake.ComputeHash()}";
using var serverLaunchMutex = ServerNamedMutex.OpenOrCreateMutex(serverLaunchMutexName, out bool mutexCreatedNew);
if (!mutexCreatedNew)
try
{
// Some other client process launching a server and setting a build request for it. Fallback to usual msbuild app build.
CommunicationsUtilities.Trace("Another process launching the msbuild server, falling back to former behavior.");
_exitResult.MSBuildClientExitType = MSBuildClientExitType.ServerBusy;
return false;
}
// For unknown root cause, opening mutex can sometimes throw 'Connection timed out' exception. See: https://github.com/dotnet/msbuild/issues/7993
using var serverLaunchMutex = ServerNamedMutex.OpenOrCreateMutex(serverLaunchMutexName, out bool mutexCreatedNew);
if (!mutexCreatedNew)
{
// Some other client process launching a server and setting a build request for it. Fallback to usual msbuild app build.
CommunicationsUtilities.Trace("Another process launching the msbuild server, falling back to former behavior.");
_exitResult.MSBuildClientExitType = MSBuildClientExitType.ServerBusy;
return false;
}

string[] msBuildServerOptions = new string[] {
"/nologo",
"/nodemode:8"
};
string[] msBuildServerOptions = new string[] {
"/nologo",
"/nodemode:8"
};

try
{
NodeLauncher nodeLauncher = new NodeLauncher();
CommunicationsUtilities.Trace("Starting Server...");
Process msbuildProcess = nodeLauncher.Start(_msbuildLocation, string.Join(" ", msBuildServerOptions));
Expand Down