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Speed up memory page mapping (#2141) 

- Memory::MapPages total samplecount was reduced from 4.6% to 1.06%.
- From main menu into the game from 1.03% to 0.35%
This commit is contained in:
Annomatg 2019-02-27 23:22:47 +01:00 committed by bunnei
parent 532dda0499
commit ef84c70d22
1 changed files with 11 additions and 6 deletions
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13
src/core/memory.cpp
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@ -71,17 +71,22 @@ static void MapPages(PageTable& page_table, VAddr base, u64 size, u8* memory, Pa
FlushMode::FlushAndInvalidate);
VAddr end = base + size;
while (base != end) {
ASSERT_MSG(base < page_table.pointers.size(), "out of range mapping at {:016X}", base);
ASSERT_MSG(end <= page_table.pointers.size(), "out of range mapping at {:016X}",
base + page_table.pointers.size());
page_table.attributes[base] = type;
std::fill(page_table.attributes.begin() + base, page_table.attributes.begin() + end, type);
if (memory == nullptr) {
std::fill(page_table.pointers.begin() + base, page_table.pointers.begin() + end, memory);
} else {
while (base != end) {
page_table.pointers[base] = memory;
base += 1;
if (memory != nullptr)
memory += PAGE_SIZE;
}
}
}
void MapMemoryRegion(PageTable& page_table, VAddr base, u64 size, u8* target) {
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: {:016X}", size);