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kernel/vm_manager: Move variables closer to usage spots in MapPhysicalMemory/UnmapPhysicalMemory
Narrows the scope of variables down to where they're only necessary.
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96cc9a9279
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@ -296,12 +296,6 @@ ResultVal<VAddr> VMManager::SetHeapSize(u64 size) {
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}
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ResultCode VMManager::MapPhysicalMemory(VAddr target, u64 size) {
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const auto end_addr = target + size;
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const auto last_addr = end_addr - 1;
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VAddr cur_addr = target;
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ResultCode result = RESULT_SUCCESS;
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// Check how much memory we've already mapped.
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const auto mapped_size_result = SizeOfAllocatedVMAsInRange(target, size);
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if (mapped_size_result.Failed()) {
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@ -324,10 +318,13 @@ ResultCode VMManager::MapPhysicalMemory(VAddr target, u64 size) {
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// Keep track of the memory regions we unmap.
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std::vector<std::pair<u64, u64>> mapped_regions;
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ResultCode result = RESULT_SUCCESS;
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// Iterate, trying to map memory.
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{
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cur_addr = target;
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const auto end_addr = target + size;
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const auto last_addr = end_addr - 1;
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VAddr cur_addr = target;
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auto iter = FindVMA(target);
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ASSERT(iter != vma_map.end());
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@ -381,12 +378,6 @@ ResultCode VMManager::MapPhysicalMemory(VAddr target, u64 size) {
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}
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ResultCode VMManager::UnmapPhysicalMemory(VAddr target, u64 size) {
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const auto end_addr = target + size;
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const auto last_addr = end_addr - 1;
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VAddr cur_addr = target;
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ResultCode result = RESULT_SUCCESS;
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// Check how much memory is currently mapped.
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const auto mapped_size_result = SizeOfUnmappablePhysicalMemoryInRange(target, size);
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if (mapped_size_result.Failed()) {
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@ -401,10 +392,13 @@ ResultCode VMManager::UnmapPhysicalMemory(VAddr target, u64 size) {
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// Keep track of the memory regions we unmap.
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std::vector<std::pair<u64, u64>> unmapped_regions;
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ResultCode result = RESULT_SUCCESS;
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// Try to unmap regions.
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{
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cur_addr = target;
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const auto end_addr = target + size;
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const auto last_addr = end_addr - 1;
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VAddr cur_addr = target;
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auto iter = FindVMA(target);
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ASSERT(iter != vma_map.end());
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@ -443,8 +437,8 @@ ResultCode VMManager::UnmapPhysicalMemory(VAddr target, u64 size) {
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if (result.IsError()) {
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for (const auto [map_address, map_size] : unmapped_regions) {
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const auto remap_res =
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MapMemoryBlock(map_address, std::make_shared<PhysicalMemory>(map_size), 0,
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map_size, MemoryState::Heap, VMAPermission::None);
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MapMemoryBlock(map_address, std::make_shared<PhysicalMemory>(map_size), 0, map_size,
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MemoryState::Heap, VMAPermission::None);
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ASSERT_MSG(remap_res.Succeeded(), "Failed to remap a memory block.");
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}
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