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kernel/process: Migrate heap-related memory management out of the process class and into the vm manager

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Avoids a breach of responsibilities in the interface and keeps the
direct code for memory management within the VMManager class.
This commit is contained in:
Lioncash
2018-11-13 11:06:33 -05:00
parent 65bd03d74c
commit b8e885c6e5
4 changed files with 97 additions and 84 deletions
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15
src/core/hle/kernel/vm_manager.h
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@ -186,6 +186,11 @@ public:
/// Changes the permissions of a range of addresses, splitting VMAs as necessary.
ResultCode ReprotectRange(VAddr target, u64 size, VMAPermission new_perms);
ResultVal<VAddr> HeapAllocate(VAddr target, u64 size, VMAPermission perms);
ResultCode HeapFree(VAddr target, u64 size);
ResultCode MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size);
/**
* Scans all VMAs and updates the page table range of any that use the given vector as backing
* memory. This should be called after any operation that causes reallocation of the vector.
@ -343,5 +348,15 @@ private:
VAddr tls_io_region_base = 0;
VAddr tls_io_region_end = 0;
// Memory used to back the allocations in the regular heap. A single vector is used to cover
// the entire virtual address space extents that bound the allocations, including any holes.
// This makes deallocation and reallocation of holes fast and keeps process memory contiguous
// in the emulator address space, allowing Memory::GetPointer to be reasonably safe.
std::shared_ptr<std::vector<u8>> heap_memory;
// The left/right bounds of the address space covered by heap_memory.
VAddr heap_start = 0;
VAddr heap_end = 0;
u64 heap_used = 0;
};
} // namespace Kernel