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// Copyright 2018 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "VkQueryPool.hpp"
#include <chrono>
#include <cstring>
#include <new>
namespace vk {
Query::Query(VkQueryType type)
: finished(marl::Event::Mode::Manual)
, state(UNAVAILABLE)
, type(type)
, value(0)
{}
void Query::reset()
{
finished.clear();
auto prevState = state.exchange(UNAVAILABLE);
ASSERT(prevState != ACTIVE);
value = 0;
}
void Query::start()
{
auto prevState = state.exchange(ACTIVE);
ASSERT(prevState != FINISHED); // Must be reset first
wg.add();
}
void Query::finish()
{
if(wg.done())
{
auto prevState = state.exchange(FINISHED);
ASSERT(prevState == ACTIVE);
finished.signal();
}
}
Query::Data Query::getData() const
{
Data out;
out.state = state;
out.value = value;
return out;
}
VkQueryType Query::getType() const
{
return type;
}
void Query::wait()
{
finished.wait();
}
void Query::set(int64_t v)
{
value = v;
}
void Query::add(int64_t v)
{
value += v;
}
QueryPool::QueryPool(const VkQueryPoolCreateInfo *pCreateInfo, void *mem)
: pool(reinterpret_cast<Query *>(mem))
, type(pCreateInfo->queryType)
, count(pCreateInfo->queryCount)
{
// According to the Vulkan 1.2 spec, section 30. Features:
// "pipelineStatisticsQuery specifies whether the pipeline statistics
// queries are supported. If this feature is not enabled, queries of
// type VK_QUERY_TYPE_PIPELINE_STATISTICS cannot be created, and
// none of the VkQueryPipelineStatisticFlagBits bits can be set in the
// pipelineStatistics member of the VkQueryPoolCreateInfo structure."
if(type == VK_QUERY_TYPE_PIPELINE_STATISTICS)
{
UNSUPPORTED("VkPhysicalDeviceFeatures::pipelineStatisticsQuery");
}
// Construct all queries
for(uint32_t i = 0; i < count; i++)
{
new(&pool[i]) Query(type);
}
}
void QueryPool::destroy(const VkAllocationCallbacks *pAllocator)
{
for(uint32_t i = 0; i < count; i++)
{
pool[i].~Query();
}
vk::freeHostMemory(pool, pAllocator);
}
size_t QueryPool::ComputeRequiredAllocationSize(const VkQueryPoolCreateInfo *pCreateInfo)
{
return sizeof(Query) * pCreateInfo->queryCount;
}
VkResult QueryPool::getResults(uint32_t firstQuery, uint32_t queryCount, size_t dataSize,
void *pData, VkDeviceSize stride, VkQueryResultFlags flags) const
{
// dataSize must be large enough to contain the result of each query
ASSERT(static_cast<size_t>(stride * queryCount) <= dataSize);
// The sum of firstQuery and queryCount must be less than or equal to the number of queries
ASSERT((firstQuery + queryCount) <= count);
VkResult result = VK_SUCCESS;
uint8_t *data = static_cast<uint8_t *>(pData);
for(uint32_t i = firstQuery; i < (firstQuery + queryCount); i++, data += stride)
{
auto &query = pool[i];
if(flags & VK_QUERY_RESULT_WAIT_BIT) // Must wait for query to finish
{
query.wait();
}
const auto current = query.getData();
// "If VK_QUERY_RESULT_WAIT_BIT and VK_QUERY_RESULT_PARTIAL_BIT are both not set
// then no result values are written to pData for queries that are in the
// unavailable state at the time of the call, and vkGetQueryPoolResults returns
// VK_NOT_READY. However, availability state is still written to pData for those
// queries if VK_QUERY_RESULT_WITH_AVAILABILITY_BIT is set."
bool writeResult = true;
if(current.state == Query::ACTIVE || (current.state == Query::UNAVAILABLE && !(flags & VK_QUERY_RESULT_WAIT_BIT)))
{
result = VK_NOT_READY;
writeResult = (flags & VK_QUERY_RESULT_PARTIAL_BIT); // Allow writing partial results
}
if(flags & VK_QUERY_RESULT_64_BIT)
{
uint64_t *result64 = reinterpret_cast<uint64_t *>(data);
if(writeResult)
{
result64[0] = current.value;
}
if(flags & VK_QUERY_RESULT_WITH_AVAILABILITY_BIT) // Output query availablity
{
result64[1] = current.state;
}
}
else
{
uint32_t *result32 = reinterpret_cast<uint32_t *>(data);
if(writeResult)
{
result32[0] = static_cast<uint32_t>(current.value);
}
if(flags & VK_QUERY_RESULT_WITH_AVAILABILITY_BIT) // Output query availablity
{
result32[1] = current.state;
}
}
}
return result;
}
void QueryPool::begin(uint32_t query, VkQueryControlFlags flags)
{
ASSERT(query < count);
// Only accept flags with valid bits set.
if(flags & ~(VK_QUERY_CONTROL_PRECISE_BIT))
{
UNSUPPORTED("vkCmdBeginQuery::flags %d", int(flags));
}
pool[query].start();
}
void QueryPool::end(uint32_t query)
{
ASSERT(query < count);
pool[query].finish();
}
void QueryPool::reset(uint32_t firstQuery, uint32_t queryCount)
{
// The sum of firstQuery and queryCount must be less than or equal to the number of queries
ASSERT((firstQuery + queryCount) <= count);
for(uint32_t i = firstQuery; i < (firstQuery + queryCount); i++)
{
pool[i].reset();
}
}
void QueryPool::writeTimestamp(uint32_t query)
{
ASSERT(query < count);
ASSERT(type == VK_QUERY_TYPE_TIMESTAMP);
pool[query].start();
pool[query].set(std::chrono::time_point_cast<std::chrono::nanoseconds>(
std::chrono::steady_clock::now())
.time_since_epoch()
.count());
pool[query].finish();
}
} // namespace vk