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buffer_cache: Use boost::container::small_vector for maps in range

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Most overlaps in the buffer cache only contain one mapped address.
We can avoid close to all heap allocations once the buffer cache is
warmed up by using a small_vector with a stack size of one.
This commit is contained in:
ReinUsesLisp 2020-05-20 23:55:40 -03:00
parent 891236124c
commit 19d4f28001
1 changed files with 15 additions and 13 deletions
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28
src/video_core/buffer_cache/buffer_cache.h
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@ -12,6 +12,7 @@
#include <utility>
#include <vector>
#include <boost/container/small_vector.hpp>
#include <boost/icl/interval_map.hpp>
#include <boost/icl/interval_set.hpp>
#include <boost/intrusive/set.hpp>
@ -33,6 +34,10 @@ namespace VideoCommon {
template <typename OwnerBuffer, typename BufferType, typename StreamBuffer>
class BufferCache {
using IntervalSet = boost::icl::interval_set<VAddr>;
using IntervalType = typename IntervalSet::interval_type;
using VectorMapInterval = boost::container::small_vector<MapInterval*, 1>;
public:
using BufferInfo = std::pair<BufferType, u64>;
@ -133,7 +138,7 @@ public:
void FlushRegion(VAddr addr, std::size_t size) {
std::lock_guard lock{mutex};
std::vector<MapInterval*> objects = GetMapsInRange(addr, size);
VectorMapInterval objects = GetMapsInRange(addr, size);
std::sort(objects.begin(), objects.end(),
[](MapInterval* lhs, MapInterval* rhs) { return lhs->ticks < rhs->ticks; });
for (MapInterval* object : objects) {
@ -148,7 +153,7 @@ public:
bool MustFlushRegion(VAddr addr, std::size_t size) {
std::lock_guard lock{mutex};
const std::vector<MapInterval*> objects = GetMapsInRange(addr, size);
const VectorMapInterval objects = GetMapsInRange(addr, size);
return std::any_of(objects.cbegin(), objects.cend(), [](const MapInterval* map) {
return map->is_modified && map->is_registered;
});
@ -158,8 +163,7 @@ public:
void InvalidateRegion(VAddr addr, u64 size) {
std::lock_guard lock{mutex};
std::vector<MapInterval*> objects = GetMapsInRange(addr, size);
for (auto& object : objects) {
for (auto& object : GetMapsInRange(addr, size)) {
if (object->is_registered) {
Unregister(object);
}
@ -314,7 +318,7 @@ protected:
private:
MapInterval* MapAddress(const OwnerBuffer& block, GPUVAddr gpu_addr, VAddr cpu_addr,
std::size_t size) {
std::vector<MapInterval*> overlaps = GetMapsInRange(cpu_addr, size);
const VectorMapInterval overlaps = GetMapsInRange(cpu_addr, size);
if (overlaps.empty()) {
auto& memory_manager = system.GPU().MemoryManager();
const VAddr cpu_addr_end = cpu_addr + size;
@ -368,7 +372,7 @@ private:
}
void UpdateBlock(const OwnerBuffer& block, VAddr start, VAddr end,
std::vector<MapInterval*>& overlaps) {
const VectorMapInterval& overlaps) {
const IntervalType base_interval{start, end};
IntervalSet interval_set{};
interval_set.add(base_interval);
@ -387,14 +391,13 @@ private:
}
}
std::vector<MapInterval*> GetMapsInRange(VAddr addr, std::size_t size) {
VectorMapInterval GetMapsInRange(VAddr addr, std::size_t size) {
VectorMapInterval result;
if (size == 0) {
return {};
return result;
}
std::vector<MapInterval*> result;
const VAddr addr_end = addr + size;
auto it = mapped_addresses.lower_bound(addr);
if (it != mapped_addresses.begin()) {
--it;
@ -574,10 +577,9 @@ private:
u64 buffer_offset = 0;
u64 buffer_offset_base = 0;
using IntervalSet = boost::icl::interval_set<VAddr>;
using IntervalType = typename IntervalSet::interval_type;
std::list<MapInterval> mapped_addresses_storage; // Temporary hack
boost::intrusive::set<MapInterval, boost::intrusive::compare<MapIntervalCompare>> mapped_addresses;
boost::intrusive::set<MapInterval, boost::intrusive::compare<MapIntervalCompare>>
mapped_addresses;
static constexpr u64 write_page_bit = 11;
std::unordered_map<u64, u32> written_pages;