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-rw-r--r--src/core/device_memory_manager.h15
-rw-r--r--src/core/device_memory_manager.inc18
2 files changed, 19 insertions, 14 deletions
diff --git a/src/core/device_memory_manager.h b/src/core/device_memory_manager.h
index 63823602c..0568a821b 100644
--- a/src/core/device_memory_manager.h
+++ b/src/core/device_memory_manager.h
@@ -5,6 +5,7 @@
#include <array>
#include <atomic>
+#include <bit>
#include <deque>
#include <memory>
#include <mutex>
@@ -181,24 +182,28 @@ private:
}
Common::VirtualBuffer<VAddr> cpu_backing_address;
- static constexpr size_t subentries = 8 / sizeof(u8);
+ using CounterType = u8;
+ using CounterAtomicType = std::atomic_uint8_t;
+ static constexpr size_t subentries = 8 / sizeof(CounterType);
static constexpr size_t subentries_mask = subentries - 1;
+ static constexpr size_t subentries_shift =
+ std::countr_zero(sizeof(u64)) - std::countr_zero(sizeof(CounterType));
class CounterEntry final {
public:
CounterEntry() = default;
- std::atomic_uint8_t& Count(std::size_t page) {
+ CounterAtomicType& Count(std::size_t page) {
return values[page & subentries_mask];
}
- const std::atomic_uint8_t& Count(std::size_t page) const {
+ const CounterAtomicType& Count(std::size_t page) const {
return values[page & subentries_mask];
}
private:
- std::array<std::atomic_uint8_t, subentries> values{};
+ std::array<CounterAtomicType, subentries> values{};
};
- static_assert(sizeof(CounterEntry) == subentries * sizeof(u8),
+ static_assert(sizeof(CounterEntry) == subentries * sizeof(CounterType),
"CounterEntry should be 8 bytes!");
static constexpr size_t num_counter_entries =
diff --git a/src/core/device_memory_manager.inc b/src/core/device_memory_manager.inc
index 0a59000aa..7afe54949 100644
--- a/src/core/device_memory_manager.inc
+++ b/src/core/device_memory_manager.inc
@@ -213,8 +213,8 @@ void DeviceMemoryManager<Traits>::Free(DAddr start, size_t size) {
}
template <typename Traits>
-void DeviceMemoryManager<Traits>::Map(DAddr address, VAddr virtual_address, size_t size,
- Asid asid, bool track) {
+void DeviceMemoryManager<Traits>::Map(DAddr address, VAddr virtual_address, size_t size, Asid asid,
+ bool track) {
Core::Memory::Memory* process_memory = registered_processes[asid.id];
size_t start_page_d = address >> Memory::YUZU_PAGEBITS;
size_t num_pages = Common::AlignUp(size, Memory::YUZU_PAGESIZE) >> Memory::YUZU_PAGEBITS;
@@ -522,10 +522,10 @@ void DeviceMemoryManager<Traits>::UpdatePagesCachedCount(DAddr addr, size_t size
size_t vpage = base_vaddress >> Memory::YUZU_PAGEBITS;
auto* memory_device_inter = registered_processes[asid.id];
for (; page != page_end; ++page) {
- std::atomic_uint8_t& count = cached_pages->at(page >> 3).Count(page);
+ CounterAtomicType& count = cached_pages->at(page >> subentries_shift).Count(page);
if (delta > 0) {
- ASSERT_MSG(count.load(std::memory_order::relaxed) < std::numeric_limits<u8>::max(),
+ ASSERT_MSG(count.load(std::memory_order::relaxed) < std::numeric_limits<CounterType>::max(),
"Count may overflow!");
} else if (delta < 0) {
ASSERT_MSG(count.load(std::memory_order::relaxed) > 0, "Count may underflow!");
@@ -534,7 +534,7 @@ void DeviceMemoryManager<Traits>::UpdatePagesCachedCount(DAddr addr, size_t size
}
// Adds or subtracts 1, as count is a unsigned 8-bit value
- count.fetch_add(static_cast<u8>(delta), std::memory_order_release);
+ count.fetch_add(static_cast<CounterType>(delta), std::memory_order_release);
// Assume delta is either -1 or 1
if (count.load(std::memory_order::relaxed) == 0) {
@@ -553,15 +553,15 @@ void DeviceMemoryManager<Traits>::UpdatePagesCachedCount(DAddr addr, size_t size
}
cache_bytes += Memory::YUZU_PAGESIZE;
} else if (cache_bytes > 0) {
- MarkRegionCaching(memory_device_inter, cache_begin << Memory::YUZU_PAGEBITS, cache_bytes,
- true);
+ MarkRegionCaching(memory_device_inter, cache_begin << Memory::YUZU_PAGEBITS,
+ cache_bytes, true);
cache_bytes = 0;
}
vpage++;
}
if (uncache_bytes > 0) {
- MarkRegionCaching(memory_device_inter, uncache_begin << Memory::YUZU_PAGEBITS, uncache_bytes,
- false);
+ MarkRegionCaching(memory_device_inter, uncache_begin << Memory::YUZU_PAGEBITS,
+ uncache_bytes, false);
}
if (cache_bytes > 0) {
MarkRegionCaching(memory_device_inter, cache_begin << Memory::YUZU_PAGEBITS, cache_bytes,