70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef TOOLS_GN_TARGET_MANAGER_H_
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#define TOOLS_GN_TARGET_MANAGER_H_
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#include <set>
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#include <vector>
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#include "base/basictypes.h"
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#include "base/containers/hash_tables.h"
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#include "base/synchronization/lock.h"
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#include "tools/gn/target.h"
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class BuildSettings;
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class Err;
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class ItemTree;
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class LocationRange;
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class ToolchainManager;
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class Value;
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// Manages all the targets in the system. This integrates with the ItemTree
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// to manage the target-specific rules and creation.
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//
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// This class is threadsafe.
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class TargetManager {
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public:
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explicit TargetManager(const BuildSettings* settings);
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~TargetManager();
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// Gets a reference to a named target. The given target name is created if
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// it doesn't exist.
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//
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// The label should be fully specified in that it should include an
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// explicit toolchain.
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//
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// |specified_from_here| should indicate the dependency or the target
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// generator causing this access for error message generation.
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//
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// |dep_from| should be set when a target is getting a dep that it depends
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// on. |dep_from| indicates the target that specified the dependency. It
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// will be used to track outstanding dependencies so we can know when the
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// target and all of its dependencies are complete. It should be null when
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// getting a target for other reasons.
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//
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// On failure, |err| will be set.
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//
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// The returned pointer must not be dereferenced until it's generated, since
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// it could be being generated on another thread.
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Target* GetTarget(const Label& label,
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const LocationRange& specified_from_here,
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Target* dep_from,
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Err* err);
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// Called by a target when it has been loaded from the .gin file. Its
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// dependencies may or may not be resolved yet.
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bool TargetGenerationComplete(const Label& label, Err* err);
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// Returns a list of all targets.
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void GetAllTargets(std::vector<const Target*>* all_targets) const;
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private:
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const BuildSettings* build_settings_;
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DISALLOW_COPY_AND_ASSIGN(TargetManager);
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};
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#endif // TOOLS_GN_TARGET_MANAGER_H
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