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// Copyright 2022 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_MAGLEV_MAGLEV_CONCURRENT_DISPATCHER_H_
#define V8_MAGLEV_MAGLEV_CONCURRENT_DISPATCHER_H_
#ifdef V8_ENABLE_MAGLEV
#include <memory>
#include "src/codegen/compiler.h" // For OptimizedCompilationJob.
#include "src/utils/locked-queue.h"
namespace v8 {
namespace internal {
class Isolate;
namespace maglev {
class MaglevCompilationInfo;
// Exports needed functionality without exposing implementation details.
class ExportedMaglevCompilationInfo final {
public:
explicit ExportedMaglevCompilationInfo(MaglevCompilationInfo* info)
: info_(info) {}
Zone* zone() const;
void set_canonical_handles(
std::unique_ptr<CanonicalHandlesMap>&& canonical_handles);
private:
MaglevCompilationInfo* const info_;
};
// The job is a single actual compilation task.
class MaglevCompilationJob final : public OptimizedCompilationJob {
public:
static std::unique_ptr<MaglevCompilationJob> New(Isolate* isolate,
Handle<JSFunction> function);
virtual ~MaglevCompilationJob();
Status PrepareJobImpl(Isolate* isolate) override;
Status ExecuteJobImpl(RuntimeCallStats* stats,
LocalIsolate* local_isolate) override;
Status FinalizeJobImpl(Isolate* isolate) override;
private:
explicit MaglevCompilationJob(std::unique_ptr<MaglevCompilationInfo>&& info);
MaglevCompilationInfo* info() const { return info_.get(); }
const std::unique_ptr<MaglevCompilationInfo> info_;
};
// The public API for Maglev concurrent compilation.
// Keep this as minimal as possible.
class MaglevConcurrentDispatcher final {
class JobTask;
// TODO(jgruber): There's no reason to use locking queues here, we only use
// them for simplicity - consider replacing with lock-free data structures.
using QueueT = LockedQueue<std::unique_ptr<MaglevCompilationJob>>;
public:
explicit MaglevConcurrentDispatcher(Isolate* isolate);
~MaglevConcurrentDispatcher();
// Called from the main thread.
void EnqueueJob(std::unique_ptr<MaglevCompilationJob>&& job);
// Called from the main thread.
void FinalizeFinishedJobs();
bool is_enabled() const { return static_cast<bool>(job_handle_); }
private:
Isolate* const isolate_;
std::unique_ptr<JobHandle> job_handle_;
QueueT incoming_queue_;
QueueT outgoing_queue_;
};
} // namespace maglev
} // namespace internal
} // namespace v8
#endif // V8_ENABLE_MAGLEV
#endif // V8_MAGLEV_MAGLEV_CONCURRENT_DISPATCHER_H_
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