1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
// Copyright 2014 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.skyframe;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.cmdline.PackageIdentifier;
import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
import com.google.devtools.build.lib.events.ExtendedEventHandler;
import com.google.devtools.build.lib.packages.CachingPackageLocator;
import com.google.devtools.build.lib.packages.NoSuchPackageException;
import com.google.devtools.build.lib.packages.NoSuchTargetException;
import com.google.devtools.build.lib.packages.Package;
import com.google.devtools.build.lib.packages.Target;
import com.google.devtools.build.lib.pkgcache.PackageManager;
import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
import com.google.devtools.build.lib.pkgcache.TargetPatternPreloader;
import com.google.devtools.build.lib.pkgcache.TransitivePackageLoader;
import com.google.devtools.build.lib.skyframe.SkyframeExecutor.SkyframePackageLoader;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.vfs.UnixGlob;
import com.google.devtools.build.skyframe.CyclesReporter;
import java.io.PrintStream;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
/**
* Skyframe-based package manager.
*
* <p>This is essentially a compatibility shim between the native Skyframe and non-Skyframe
* parts of Blaze and should not be long-lived.
*/
class SkyframePackageManager implements PackageManager, CachingPackageLocator {
private final SkyframePackageLoader packageLoader;
private final SkyframeExecutor.SkyframeTransitivePackageLoader transitiveLoader;
private final AtomicReference<UnixGlob.FilesystemCalls> syscalls;
private final AtomicReference<CyclesReporter> skyframeCyclesReporter;
private final AtomicReference<PathPackageLocator> pkgLocator;
private final AtomicInteger numPackagesLoaded;
private final SkyframeExecutor skyframeExecutor;
public SkyframePackageManager(SkyframePackageLoader packageLoader,
SkyframeExecutor.SkyframeTransitivePackageLoader transitiveLoader,
AtomicReference<UnixGlob.FilesystemCalls> syscalls,
AtomicReference<CyclesReporter> skyframeCyclesReporter,
AtomicReference<PathPackageLocator> pkgLocator,
AtomicInteger numPackagesLoaded,
SkyframeExecutor skyframeExecutor) {
this.packageLoader = packageLoader;
this.transitiveLoader = transitiveLoader;
this.skyframeCyclesReporter = skyframeCyclesReporter;
this.pkgLocator = pkgLocator;
this.syscalls = syscalls;
this.numPackagesLoaded = numPackagesLoaded;
this.skyframeExecutor = skyframeExecutor;
}
@ThreadSafe
@Override
public Package getPackage(ExtendedEventHandler eventHandler, PackageIdentifier packageIdentifier)
throws NoSuchPackageException, InterruptedException {
return packageLoader.getPackage(eventHandler, packageIdentifier);
}
@Override
public Target getTarget(ExtendedEventHandler eventHandler, Label label)
throws NoSuchPackageException, NoSuchTargetException, InterruptedException {
return getPackage(eventHandler, label.getPackageIdentifier()).getTarget(label.getName());
}
@Override
public PackageManagerStatistics getAndClearStatistics() {
int packagesLoaded = numPackagesLoaded.getAndSet(0);
return new PackageManagerStatistics() {
@Override
public int getPackagesLoaded() {
return packagesLoaded;
}
};
}
@Override
public boolean isPackage(ExtendedEventHandler eventHandler, PackageIdentifier packageName) {
return getBuildFileForPackage(packageName) != null;
}
@Override
public void dump(PrintStream printStream) {
skyframeExecutor.dumpPackages(printStream);
}
@ThreadSafe
@Override
public Path getBuildFileForPackage(PackageIdentifier packageName) {
// Note that this method needs to be thread-safe, as it is currently used concurrently by
// legacy blaze code.
if (packageLoader.isPackageDeleted(packageName)) {
return null;
}
// TODO(bazel-team): Use a PackageLookupValue here [skyframe-loading]
// TODO(bazel-team): The implementation in PackageCache also checks for duplicate packages, see
// BuildFileCache#getBuildFile [skyframe-loading]
return pkgLocator.get().getPackageBuildFileNullable(packageName, syscalls);
}
@Override
public PathPackageLocator getPackagePath() {
return pkgLocator.get();
}
@Override
public TransitivePackageLoader newTransitiveLoader() {
return new SkyframeLabelVisitor(transitiveLoader, skyframeCyclesReporter);
}
@Override
public TargetPatternPreloader newTargetPatternPreloader() {
return new SkyframeTargetPatternEvaluator(skyframeExecutor);
}
}
|
