112 lines
3.8 KiB
C++
112 lines
3.8 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_FRAMEWORKS_ML_NN_RUNTIME_EVENT_H
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#define ANDROID_FRAMEWORKS_ML_NN_RUNTIME_EVENT_H
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#include <android/sync.h>
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#include <utility>
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#include "Callbacks.h"
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#include "HalInterfaces.h"
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namespace android::nn {
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class IEvent {
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public:
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virtual ~IEvent() = default;
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virtual void wait() const = 0;
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virtual hal::ErrorStatus getStatus() const = 0;
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virtual int getSyncFenceFd(bool shouldDup) const = 0;
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};
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// The CallbackEvent wraps ExecutionCallback
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class CallbackEvent : public IEvent {
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public:
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CallbackEvent(sp<ExecutionCallback> callback) : kExecutionCallback(std::move(callback)) {
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CHECK(kExecutionCallback != nullptr);
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}
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void wait() const override { kExecutionCallback->wait(); }
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hal::ErrorStatus getStatus() const override { return kExecutionCallback->getStatus(); }
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// Always return -1 as this is not backed by a sync fence.
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int getSyncFenceFd(bool /*should_dup*/) const override { return -1; }
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private:
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const sp<ExecutionCallback> kExecutionCallback;
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};
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// The SyncFenceEvent wraps sync fence and IFencedExecutionCallback
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class SyncFenceEvent : public IEvent {
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public:
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SyncFenceEvent(int sync_fence_fd, const sp<hal::IFencedExecutionCallback>& callback)
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: kFencedExecutionCallback(callback) {
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if (sync_fence_fd > 0) {
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// Dup the provided file descriptor
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mSyncFenceFd = dup(sync_fence_fd);
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CHECK(mSyncFenceFd > 0);
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}
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}
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// Close the fd the event owns.
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~SyncFenceEvent() { close(mSyncFenceFd); }
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// Use syncWait to wait for the sync fence until the status change.
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void wait() const override { syncWait(mSyncFenceFd, -1); }
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// Get the status of the event.
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// In case of syncWait error, query the dispatch callback for detailed
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// error status.
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hal::ErrorStatus getStatus() const override {
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auto error = hal::ErrorStatus::NONE;
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if (mSyncFenceFd > 0 && syncWait(mSyncFenceFd, -1) != FenceState::SIGNALED) {
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error = hal::ErrorStatus::GENERAL_FAILURE;
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// If there is a callback available, use the callback to get the error code.
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if (kFencedExecutionCallback != nullptr) {
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const hal::Return<void> ret = kFencedExecutionCallback->getExecutionInfo(
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[&error](hal::ErrorStatus status, hal::Timing, hal::Timing) {
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error = status;
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});
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if (!ret.isOk()) {
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error = hal::ErrorStatus::GENERAL_FAILURE;
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}
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}
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}
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return error;
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}
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// Return the sync fence fd.
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// If shouldDup is true, the caller must close the fd returned:
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// - When being used internally within NNAPI runtime, set shouldDup to false.
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// - When being used to return a fd to application code, set shouldDup to
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// true.
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int getSyncFenceFd(bool shouldDup) const override {
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if (shouldDup) {
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return dup(mSyncFenceFd);
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}
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return mSyncFenceFd;
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}
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private:
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// TODO(b/148423931): used android::base::unique_fd instead.
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int mSyncFenceFd = -1;
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const sp<hal::IFencedExecutionCallback> kFencedExecutionCallback;
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};
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} // namespace android::nn
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#endif // ANDROID_FRAMEWORKS_ML_NN_RUNTIME_EVENT_H
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