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author | Lioncash <mathew1800@gmail.com> | 2018-12-06 16:59:22 +0100 |
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committer | Lioncash <mathew1800@gmail.com> | 2018-12-06 21:02:17 +0100 |
commit | d4c1b9d311c978a6354574d09c451522ceb74e82 (patch) | |
tree | 4fd85da1f82ec31892c6645e45d2a04f6e010b9f /src/core/hle/kernel | |
parent | Merge pull request #1870 from heapo/pagetable_shrink_to_fit (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/shared_memory.cpp | 8 | ||||
-rw-r--r-- | src/core/hle/kernel/svc.cpp | 20 | ||||
-rw-r--r-- | src/core/hle/kernel/vm_manager.cpp | 4 | ||||
-rw-r--r-- | src/core/hle/kernel/vm_manager.h | 26 |
4 files changed, 36 insertions, 22 deletions
diff --git a/src/core/hle/kernel/shared_memory.cpp b/src/core/hle/kernel/shared_memory.cpp index 0494581f5..d1ca60125 100644 --- a/src/core/hle/kernel/shared_memory.cpp +++ b/src/core/hle/kernel/shared_memory.cpp @@ -39,15 +39,15 @@ SharedPtr<SharedMemory> SharedMemory::Create(KernelCore& kernel, SharedPtr<Proce shared_memory->backing_block.get()); } } else { - auto& vm_manager = shared_memory->owner_process->VMManager(); + const auto& vm_manager = shared_memory->owner_process->VMManager(); // The memory is already available and mapped in the owner process. - auto vma = vm_manager.FindVMA(address); - ASSERT_MSG(vma != vm_manager.vma_map.end(), "Invalid memory address"); + const auto vma = vm_manager.FindVMA(address); + ASSERT_MSG(vm_manager.IsValidHandle(vma), "Invalid memory address"); ASSERT_MSG(vma->second.backing_block, "Backing block doesn't exist for address"); // The returned VMA might be a bigger one encompassing the desired address. - auto vma_offset = address - vma->first; + const auto vma_offset = address - vma->first; ASSERT_MSG(vma_offset + size <= vma->second.size, "Shared memory exceeds bounds of mapped block"); diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index e6c77f9db..049d756d0 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -239,7 +239,7 @@ static ResultCode SetMemoryPermission(VAddr addr, u64 size, u32 prot) { } const VMManager::VMAHandle iter = vm_manager.FindVMA(addr); - if (iter == vm_manager.vma_map.end()) { + if (!vm_manager.IsValidHandle(iter)) { LOG_ERROR(Kernel_SVC, "Unable to find VMA for address=0x{:016X}", addr); return ERR_INVALID_ADDRESS_STATE; } @@ -1077,19 +1077,23 @@ static ResultCode QueryProcessMemory(MemoryInfo* memory_info, PageInfo* /*page_i process_handle); return ERR_INVALID_HANDLE; } - auto vma = process->VMManager().FindVMA(addr); + + const auto& vm_manager = process->VMManager(); + const auto vma = vm_manager.FindVMA(addr); + memory_info->attributes = 0; - if (vma == process->VMManager().vma_map.end()) { - memory_info->base_address = 0; - memory_info->permission = static_cast<u32>(VMAPermission::None); - memory_info->size = 0; - memory_info->type = static_cast<u32>(MemoryState::Unmapped); - } else { + if (vm_manager.IsValidHandle(vma)) { memory_info->base_address = vma->second.base; memory_info->permission = static_cast<u32>(vma->second.permissions); memory_info->size = vma->second.size; memory_info->type = static_cast<u32>(vma->second.meminfo_state); + } else { + memory_info->base_address = 0; + memory_info->permission = static_cast<u32>(VMAPermission::None); + memory_info->size = 0; + memory_info->type = static_cast<u32>(MemoryState::Unmapped); } + return RESULT_SUCCESS; } diff --git a/src/core/hle/kernel/vm_manager.cpp b/src/core/hle/kernel/vm_manager.cpp index 100f8f6bf..6187993ce 100644 --- a/src/core/hle/kernel/vm_manager.cpp +++ b/src/core/hle/kernel/vm_manager.cpp @@ -87,6 +87,10 @@ VMManager::VMAHandle VMManager::FindVMA(VAddr target) const { } } +bool VMManager::IsValidHandle(VMAHandle handle) const { + return handle != vma_map.cend(); +} + ResultVal<VMManager::VMAHandle> VMManager::MapMemoryBlock(VAddr target, std::shared_ptr<std::vector<u8>> block, std::size_t offset, u64 size, diff --git a/src/core/hle/kernel/vm_manager.h b/src/core/hle/kernel/vm_manager.h index d522404fe..a12419d1e 100644 --- a/src/core/hle/kernel/vm_manager.h +++ b/src/core/hle/kernel/vm_manager.h @@ -113,16 +113,10 @@ struct VirtualMemoryArea { * - http://duartes.org/gustavo/blog/post/page-cache-the-affair-between-memory-and-files/ */ class VMManager final { + using VMAMap = std::map<VAddr, VirtualMemoryArea>; + public: - /** - * A map covering the entirety of the managed address space, keyed by the `base` field of each - * VMA. It must always be modified by splitting or merging VMAs, so that the invariant - * `elem.base + elem.size == next.base` is preserved, and mergeable regions must always be - * merged when possible so that no two similar and adjacent regions exist that have not been - * merged. - */ - std::map<VAddr, VirtualMemoryArea> vma_map; - using VMAHandle = decltype(vma_map)::const_iterator; + using VMAHandle = VMAMap::const_iterator; VMManager(); ~VMManager(); @@ -133,6 +127,9 @@ public: /// Finds the VMA in which the given address is included in, or `vma_map.end()`. VMAHandle FindVMA(VAddr target) const; + /// Indicates whether or not the given handle is within the VMA map. + bool IsValidHandle(VMAHandle handle) const; + // TODO(yuriks): Should these functions actually return the handle? /** @@ -281,7 +278,7 @@ public: Memory::PageTable page_table; private: - using VMAIter = decltype(vma_map)::iterator; + using VMAIter = VMAMap::iterator; /// Converts a VMAHandle to a mutable VMAIter. VMAIter StripIterConstness(const VMAHandle& iter); @@ -328,6 +325,15 @@ private: /// Clears out the page table void ClearPageTable(); + /** + * A map covering the entirety of the managed address space, keyed by the `base` field of each + * VMA. It must always be modified by splitting or merging VMAs, so that the invariant + * `elem.base + elem.size == next.base` is preserved, and mergeable regions must always be + * merged when possible so that no two similar and adjacent regions exist that have not been + * merged. + */ + VMAMap vma_map; + u32 address_space_width = 0; VAddr address_space_base = 0; VAddr address_space_end = 0; |