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/*
* Copyright (C) 2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/utilities/timestamp_pool_allocator.h"
#include "shared/source/device/device.h"
#include "shared/source/helpers/aligned_memory.h"
#include "shared/source/memory_manager/allocation_properties.h"
#include "shared/source/memory_manager/memory_manager.h"
#include "shared/source/os_interface/device_factory.h"
#include "shared/source/utilities/buffer_pool_allocator.inl"
namespace NEO {
TimestampPool::TimestampPool(Device *device, size_t poolSize)
: BaseType(device->getMemoryManager(), nullptr), device(device) {
DEBUG_BREAK_IF(device->getProductHelper().is2MBLocalMemAlignmentEnabled() &&
!isAligned(poolSize, MemoryConstants::pageSize2M));
AllocationProperties properties{device->getRootDeviceIndex(),
poolSize,
AllocationType::gpuTimestampDeviceBuffer,
device->getDeviceBitfield()};
auto graphicsAllocation = memoryManager->allocateGraphicsMemoryWithProperties(properties);
this->mainStorage.reset(graphicsAllocation);
this->chunkAllocator.reset(new HeapAllocator(params.startingOffset, poolSize, MemoryConstants::pageSize, 0u));
stackVec.push_back(graphicsAllocation);
this->mtx = std::make_unique<std::mutex>();
}
TimestampPool::TimestampPool(TimestampPool &&pool) noexcept : BaseType(std::move(pool)) {
mtx.reset(pool.mtx.release());
this->stackVec = std::move(pool.stackVec);
this->device = pool.device;
}
TimestampPool::~TimestampPool() {
if (mainStorage) {
device->getMemoryManager()->freeGraphicsMemory(mainStorage.release());
}
}
SharedTimestampAllocation *TimestampPool::allocate(size_t size) {
auto offset = static_cast<size_t>(this->chunkAllocator->allocate(size));
if (offset == 0) {
return nullptr;
}
return new SharedTimestampAllocation{this->mainStorage.get(), offset - params.startingOffset, size, mtx.get()};
}
const StackVec<GraphicsAllocation *, 1> &TimestampPool::getAllocationsVector() {
return stackVec;
}
TimestampPoolAllocator::TimestampPoolAllocator(Device *device) : device(device) {}
bool TimestampPoolAllocator::isEnabled() const {
if (NEO::debugManager.flags.EnableTimestampPoolAllocator.get() != -1) {
return NEO::debugManager.flags.EnableTimestampPoolAllocator.get();
}
return NEO::DeviceFactory::isHwModeSelected() && device->getProductHelper().is2MBLocalMemAlignmentEnabled();
}
SharedTimestampAllocation *TimestampPoolAllocator::requestGraphicsAllocationForTimestamp(size_t size) {
if (size > maxAllocationSize) {
return nullptr;
}
std::lock_guard<std::mutex> lock(allocatorMtx);
if (bufferPools.empty()) {
addNewBufferPool(TimestampPool(device, alignToPoolSize(defaultPoolSize)));
}
auto allocFromPool = allocateFromPools(size);
if (allocFromPool != nullptr) {
return allocFromPool;
}
this->drain();
allocFromPool = allocateFromPools(size);
if (allocFromPool != nullptr) {
return allocFromPool;
}
addNewBufferPool(TimestampPool(device, alignToPoolSize(defaultPoolSize)));
return allocateFromPools(size);
}
void TimestampPoolAllocator::freeSharedTimestampAllocation(SharedTimestampAllocation *sharedTimestampAllocation) {
std::unique_lock lock(allocatorMtx);
tryFreeFromPoolBuffer(sharedTimestampAllocation->getGraphicsAllocation(), sharedTimestampAllocation->getOffset(), sharedTimestampAllocation->getSize());
delete sharedTimestampAllocation;
}
SharedTimestampAllocation *TimestampPoolAllocator::allocateFromPools(size_t size) {
for (auto &pool : bufferPools) {
if (auto allocation = pool.allocate(size)) {
return allocation;
}
}
return nullptr;
}
size_t TimestampPoolAllocator::alignToPoolSize(size_t size) const {
return alignUp(size, poolAlignment);
}
} // namespace NEO
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