compute-runtime/shared/source/os_interface/linux/os_context_linux.h

/*
 * Copyright (C) 2018-2022 Intel Corporation
 *
 * SPDX-License-Identifier: MIT
 *
 */

#pragma once

#include "shared/source/helpers/mt_helpers.h"
#include "shared/source/os_interface/os_context.h"

#include <atomic>
#include <vector>

namespace NEO {
class Drm;

class OsContextLinux : public OsContext {
  public:
    OsContextLinux() = delete;
    ~OsContextLinux() override;
    OsContextLinux(Drm &drm, uint32_t contextId, const EngineDescriptor &engineDescriptor);

    unsigned int getEngineFlag() const { return engineFlag; }
    void setEngineFlag(unsigned int engineFlag) { this->engineFlag = engineFlag; }
    const std::vector<uint32_t> &getDrmContextIds() const { return drmContextIds; }
    const std::vector<uint32_t> &getDrmVmIds() const { return drmVmIds; }
    void setNewResourceBound() {
        tlbFlushCounter++;
    };

    uint32_t peekTlbFlushCounter() const { return tlbFlushCounter.load(); }

    void setTlbFlushed(uint32_t newCounter) {
        NEO::MultiThreadHelpers::interlockedMax(lastFlushedTlbFlushCounter, newCounter);
    };
    bool isTlbFlushRequired() const {
        return (tlbFlushCounter.load() > lastFlushedTlbFlushCounter.load());
    };
    bool isDirectSubmissionSupported(const HardwareInfo &hwInfo) const override;
    Drm &getDrm() const;
    void waitForPagingFence();
    static OsContext *create(OSInterface *osInterface, uint32_t contextId, const EngineDescriptor &engineDescriptor);
    void reInitializeContext() override;

  protected:
    void initializeContext() override;

    std::atomic<uint32_t> tlbFlushCounter{0};
    std::atomic<uint32_t> lastFlushedTlbFlushCounter{0};
    unsigned int engineFlag = 0;
    std::vector<uint32_t> drmContextIds;
    std::vector<uint32_t> drmVmIds;
    Drm &drm;
};
} // namespace NEO