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/*
* Copyright (C) 2021-2022 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/memory_manager/migration_sync_data.h"
#include "shared/source/command_stream/task_count_helper.h"
#include "shared/source/helpers/aligned_memory.h"
#include "shared/source/helpers/constants.h"
namespace NEO {
MigrationSyncData::MigrationSyncData(size_t size) {
hostPtr = alignedMalloc(size, MemoryConstants::pageSize);
}
MigrationSyncData::~MigrationSyncData() {
alignedFree(hostPtr);
}
uint32_t MigrationSyncData::getCurrentLocation() const { return currentLocation; }
bool MigrationSyncData::isUsedByTheSameContext(volatile TagAddressType *tagAddress) const { return this->tagAddress == tagAddress; }
void MigrationSyncData::setCurrentLocation(uint32_t rootDeviceIndex) {
currentLocation = rootDeviceIndex;
migrationInProgress = false;
}
void MigrationSyncData::signalUsage(volatile TagAddressType *tagAddress, TaskCountType taskCount) {
this->tagAddress = tagAddress;
latestTaskCountUsed = taskCount;
}
void MigrationSyncData::waitOnCpu() {
while (tagAddress != nullptr) {
auto taskCount = *tagAddress;
if (taskCount >= latestTaskCountUsed) {
tagAddress = nullptr;
} else {
yield();
}
};
};
void MigrationSyncData::startMigration() {
migrationInProgress = true;
}
void MigrationSyncData::yield() const {
std::this_thread::yield();
}
} // namespace NEO
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