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//
// RemoteProjectBuilder.cs
//
// Author:
// Lluis Sanchez Gual <lluis@novell.com>
//
// Copyright (c) 2009 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Diagnostics;
using System.Globalization;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using MonoDevelop.Core;
using System.IO;
using System.Linq;
namespace MonoDevelop.Projects.Formats.MSBuild
{
class RemoteBuildEngine: IBuildEngine
{
IBuildEngine engine;
Process proc;
bool alive = true;
static int count;
int busy;
public int ReferenceCount { get; set; }
public DateTime ReleaseTime { get; set; }
public RemoteBuildEngine (Process proc, IBuildEngine engine)
{
this.proc = proc;
this.engine = engine;
Interlocked.Increment (ref count);
}
public event EventHandler Disconnected;
public int AciveEngines {
get {
return count;
}
}
public IProjectBuilder LoadProject (string projectFile)
{
try {
return engine.LoadProject (projectFile);
} catch {
CheckDisconnected ();
throw;
}
}
public void UnloadProject (IProjectBuilder pb)
{
try {
engine.UnloadProject (pb);
} catch (Exception ex) {
LoggingService.LogError ("Project unloading failed", ex);
if (!CheckDisconnected ())
throw;
}
}
public void CancelTask (int taskId)
{
try {
engine.CancelTask (taskId);
} catch {
CheckDisconnected ();
throw;
}
}
public void SetCulture (CultureInfo uiCulture)
{
try {
engine.SetCulture (uiCulture);
} catch {
CheckDisconnected ();
throw;
}
}
public void SetGlobalProperties (IDictionary<string, string> properties)
{
try {
engine.SetGlobalProperties (properties);
} catch {
CheckDisconnected ();
throw;
}
}
void IBuildEngine.Ping ()
{
engine.Ping ();
}
bool CheckAlive ()
{
if (!alive)
return false;
try {
engine.Ping ();
return true;
} catch {
alive = false;
return false;
}
}
internal bool CheckDisconnected ()
{
if (!CheckAlive ()) {
if (Disconnected != null)
Disconnected (this, EventArgs.Empty);
return true;
}
return false;
}
public void Dispose ()
{
Interlocked.Decrement (ref count);
try {
alive = false;
if (proc != null) {
try {
proc.Kill ();
} catch {
}
}
else
engine.Dispose ();
} catch {
// Ignore
}
}
public bool Lock ()
{
return Interlocked.Increment (ref busy) == 1;
}
public void Unlock ()
{
Interlocked.Decrement (ref busy);
}
public bool IsBusy {
get {
return busy > 0;
}
}
}
public class RemoteProjectBuilder: IDisposable
{
RemoteBuildEngine engine;
IProjectBuilder builder;
Dictionary<string,string[]> referenceCache;
AsyncCriticalSection referenceCacheLock = new AsyncCriticalSection ();
string file;
static int lastTaskId;
internal RemoteProjectBuilder (string file, RemoteBuildEngine engine)
{
this.file = file;
this.engine = engine;
builder = engine.LoadProject (file);
referenceCache = new Dictionary<string, string[]> ();
}
public event EventHandler Disconnected;
void CheckDisconnected ()
{
if (engine != null && engine.CheckDisconnected ()) {
if (Disconnected != null)
Disconnected (this, EventArgs.Empty);
}
}
IDisposable RegisterCancellation (CancellationToken cancellationToken, int taskId)
{
return cancellationToken.Register (() => {
try {
BeginOperation ();
engine.CancelTask (taskId);
} catch (Exception ex) {
// Ignore
LoggingService.LogError ("CancelTask failed", ex);
} finally {
EndOperation ();
}
});
}
public Task<MSBuildResult> Run (
ProjectConfigurationInfo[] configurations,
ILogWriter logWriter,
MSBuildVerbosity verbosity,
string[] runTargets,
string[] evaluateItems,
string[] evaluateProperties,
Dictionary<string, string> globalProperties,
CancellationToken cancellationToken
)
{
// Get an id for the task, and get ready to cancel it if the cancellation token is signalled
var taskId = Interlocked.Increment (ref lastTaskId);
var cr = RegisterCancellation (cancellationToken, taskId);
var t = Task.Run (() => {
try {
BeginOperation ();
var res = builder.Run (configurations, logWriter, verbosity, runTargets, evaluateItems, evaluateProperties, globalProperties, taskId);
if (res == null && cancellationToken.IsCancellationRequested) {
MSBuildTargetResult err = new MSBuildTargetResult (file, false, "", "", file, 1, 1, 1, 1, "Build cancelled", "");
return new MSBuildResult (new [] { err });
}
if (res == null)
throw new Exception ("Unknown failure");
return res;
} catch (Exception ex) {
CheckDisconnected ();
LoggingService.LogError ("RunTarget failed", ex);
MSBuildTargetResult err = new MSBuildTargetResult (file, false, "", "", file, 1, 1, 1, 1, "Unknown MSBuild failure. Please try building the project again", "");
MSBuildResult res = new MSBuildResult (new [] { err });
return res;
} finally {
EndOperation ();
}
});
// Dispose the cancel registration
t.ContinueWith (r => cr.Dispose ());
return t;
}
public async Task<string[]> ResolveAssemblyReferences (ProjectConfigurationInfo[] configurations, CancellationToken cancellationToken)
{
string[] refs = null;
var id = configurations [0].Configuration + "|" + configurations [0].Platform;
using (await referenceCacheLock.EnterAsync ()) {
// Check the cache before starting the task
if (referenceCache.TryGetValue (id, out refs))
return refs;
}
// Get an id for the task, it will be used later on to cancel the task if necessary
var taskId = Interlocked.Increment (ref lastTaskId);
IDisposable cr = null;
refs = await Task.Run (() => {
using (referenceCacheLock.Enter ()) {
// Check again the cache, maybe the value was set while the task was starting
if (referenceCache.TryGetValue (id, out refs))
return refs;
// Get ready to cancel the task if the cancellation token is signalled
cr = RegisterCancellation (cancellationToken, taskId);
MSBuildResult result;
try {
BeginOperation ();
lock (engine) {
// FIXME: This lock should not be necessary, but remoting seems to have problems when doing many concurrent calls.
result = builder.Run (
configurations, null, MSBuildVerbosity.Normal,
new [] { "ResolveAssemblyReferences" }, new [] { "ReferencePath" }, null, null, taskId
);
}
} catch (Exception ex) {
CheckDisconnected ();
LoggingService.LogError ("ResolveAssemblyReferences failed", ex);
return new string [0];
} finally {
EndOperation ();
}
List<MSBuildEvaluatedItem> items;
if (result.Items.TryGetValue ("ReferencePath", out items) && items != null) {
refs = items.Select (i => i.ItemSpec).ToArray ();
} else
refs = new string[0];
referenceCache [id] = refs;
}
return refs;
});
// Dispose the cancel registration
if (cr != null)
cr.Dispose ();
return refs;
}
public async Task Refresh ()
{
using (await referenceCacheLock.EnterAsync ())
referenceCache.Clear ();
await Task.Run (() => {
try {
BeginOperation ();
builder.Refresh ();
} catch (Exception ex) {
LoggingService.LogError ("MSBuild refresh failed", ex);
CheckDisconnected ();
} finally {
EndOperation ();
}
});
}
public async Task RefreshWithContent (string projectContent)
{
using (await referenceCacheLock.EnterAsync ())
referenceCache.Clear ();
await Task.Run (() => {
try {
BeginOperation ();
builder.RefreshWithContent (projectContent);
} catch (Exception ex) {
LoggingService.LogError ("MSBuild refresh failed", ex);
CheckDisconnected ();
} finally {
EndOperation ();
}
});
}
public void Dispose ()
{
if (!MSBuildProjectService.ShutDown && engine != null) {
try {
if (builder != null)
engine.UnloadProject (builder);
MSBuildProjectService.ReleaseProjectBuilder (engine);
} catch {
// Ignore
}
GC.SuppressFinalize (this);
engine = null;
builder = null;
}
}
~RemoteProjectBuilder ()
{
Dispose ();
}
void BeginOperation ()
{
engine.Lock ();
}
void EndOperation ()
{
if (engine != null)
engine.Unlock ();
}
public void Lock ()
{
BeginOperation ();
}
public void Unlock ()
{
EndOperation ();
}
public bool IsBusy {
get {
return engine.IsBusy;
}
}
}
}
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