compute-runtime/runtime/os_interface/windows/os_context_win.cpp

/*
 * Copyright (C) 2018-2019 Intel Corporation
 *
 * SPDX-License-Identifier: MIT
 *
 */

#include "runtime/os_interface/windows/os_context_win.h"

#include "runtime/os_interface/windows/os_interface.h"
#include "runtime/os_interface/windows/wddm/wddm.h"
#include "runtime/os_interface/windows/wddm/wddm_interface.h"

namespace OCLRT {

OsContext *OsContext::create(OSInterface *osInterface, uint32_t contextId, uint32_t numDevicesSupported,
                             EngineInstanceT engineType, PreemptionMode preemptionMode) {
    if (osInterface) {
        return new OsContextWin(*osInterface->get()->getWddm(), contextId, numDevicesSupported, engineType, preemptionMode);
    }
    return new OsContext(contextId, numDevicesSupported, engineType, preemptionMode);
}

OsContextWin::OsContextWin(Wddm &wddm, uint32_t contextId, uint32_t numDevicesSupported,
                           EngineInstanceT engineType, PreemptionMode preemptionMode)
    : OsContext(contextId, numDevicesSupported, engineType, preemptionMode), wddm(wddm), residencyController(wddm, contextId) {

    UNRECOVERABLE_IF(!wddm.isInitialized());

    auto wddmInterface = wddm.getWddmInterface();
    if (!wddm.createContext(context, engineType, preemptionMode)) {
        return;
    }
    if (wddmInterface->hwQueuesSupported()) {
        if (!wddmInterface->createHwQueue(*this)) {
            return;
        }
    }
    initialized = wddmInterface->createMonitoredFence(residencyController);
    residencyController.registerCallback();
};

OsContextWin::~OsContextWin() {
    wddm.getWddmInterface()->destroyHwQueue(hwQueueHandle);
    wddm.destroyContext(context);
}

} // namespace OCLRT