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author | bunnei <bunneidev@gmail.com> | 2021-05-08 08:30:17 +0200 |
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committer | GitHub <noreply@github.com> | 2021-05-08 08:30:17 +0200 |
commit | faa067f175cbf5e916ed75776817f0046e6731c4 (patch) | |
tree | 8ab02a72a6e4d6578848c8da2c02af02684aeec7 /src/core/hle/kernel/k_shared_memory.cpp | |
parent | Merge pull request #6287 from lioncash/ldr-copy (diff) | |
parent | hle: kernel: KPageTable: CanContain should not be constexpr. (diff) | |
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Diffstat (limited to 'src/core/hle/kernel/k_shared_memory.cpp')
-rw-r--r-- | src/core/hle/kernel/k_shared_memory.cpp | 84 |
1 files changed, 59 insertions, 25 deletions
diff --git a/src/core/hle/kernel/k_shared_memory.cpp b/src/core/hle/kernel/k_shared_memory.cpp index 9b14f42b5..1da57a4c3 100644 --- a/src/core/hle/kernel/k_shared_memory.cpp +++ b/src/core/hle/kernel/k_shared_memory.cpp @@ -8,50 +8,74 @@ #include "core/hle/kernel/k_scoped_resource_reservation.h" #include "core/hle/kernel/k_shared_memory.h" #include "core/hle/kernel/kernel.h" +#include "core/hle/kernel/svc_results.h" namespace Kernel { -KSharedMemory::KSharedMemory(KernelCore& kernel, Core::DeviceMemory& device_memory) - : Object{kernel}, device_memory{device_memory} {} +KSharedMemory::KSharedMemory(KernelCore& kernel) : KAutoObjectWithSlabHeapAndContainer{kernel} {} KSharedMemory::~KSharedMemory() { kernel.GetSystemResourceLimit()->Release(LimitableResource::PhysicalMemory, size); } -std::shared_ptr<KSharedMemory> KSharedMemory::Create( - KernelCore& kernel, Core::DeviceMemory& device_memory, Process* owner_process, - KPageLinkedList&& page_list, KMemoryPermission owner_permission, - KMemoryPermission user_permission, PAddr physical_address, std::size_t size, std::string name) { +ResultCode KSharedMemory::Initialize(KernelCore& kernel_, Core::DeviceMemory& device_memory_, + KProcess* owner_process_, KPageLinkedList&& page_list_, + Svc::MemoryPermission owner_permission_, + Svc::MemoryPermission user_permission_, + PAddr physical_address_, std::size_t size_, + std::string name_) { + // Set members. + owner_process = owner_process_; + device_memory = &device_memory_; + page_list = std::move(page_list_); + owner_permission = owner_permission_; + user_permission = user_permission_; + physical_address = physical_address_; + size = size_; + name = name_; - const auto resource_limit = kernel.GetSystemResourceLimit(); - KScopedResourceReservation memory_reservation(resource_limit, LimitableResource::PhysicalMemory, - size); - ASSERT(memory_reservation.Succeeded()); + // Get the resource limit. + KResourceLimit* reslimit = kernel.GetSystemResourceLimit(); - std::shared_ptr<KSharedMemory> shared_memory{ - std::make_shared<KSharedMemory>(kernel, device_memory)}; - - shared_memory->owner_process = owner_process; - shared_memory->page_list = std::move(page_list); - shared_memory->owner_permission = owner_permission; - shared_memory->user_permission = user_permission; - shared_memory->physical_address = physical_address; - shared_memory->size = size; - shared_memory->name = name; + // Reserve memory for ourselves. + KScopedResourceReservation memory_reservation(reslimit, LimitableResource::PhysicalMemory, + size_); + R_UNLESS(memory_reservation.Succeeded(), ResultLimitReached); + // Commit our reservation. memory_reservation.Commit(); - return shared_memory; + + // Set our resource limit. + resource_limit = reslimit; + resource_limit->Open(); + + // Mark initialized. + is_initialized = true; + + // Clear all pages in the memory. + std::memset(device_memory_.GetPointer(physical_address_), 0, size_); + + return RESULT_SUCCESS; +} + +void KSharedMemory::Finalize() { + // Release the memory reservation. + resource_limit->Release(LimitableResource::PhysicalMemory, size); + resource_limit->Close(); + + // Perform inherited finalization. + KAutoObjectWithSlabHeapAndContainer<KSharedMemory, KAutoObjectWithList>::Finalize(); } -ResultCode KSharedMemory::Map(Process& target_process, VAddr address, std::size_t size, - KMemoryPermission permissions) { +ResultCode KSharedMemory::Map(KProcess& target_process, VAddr address, std::size_t size, + Svc::MemoryPermission permissions) { const u64 page_count{(size + PageSize - 1) / PageSize}; if (page_list.GetNumPages() != page_count) { UNIMPLEMENTED_MSG("Page count does not match"); } - const KMemoryPermission expected = + const Svc::MemoryPermission expected = &target_process == owner_process ? owner_permission : user_permission; if (permissions != expected) { @@ -59,7 +83,17 @@ ResultCode KSharedMemory::Map(Process& target_process, VAddr address, std::size_ } return target_process.PageTable().MapPages(address, page_list, KMemoryState::Shared, - permissions); + ConvertToKMemoryPermission(permissions)); +} + +ResultCode KSharedMemory::Unmap(KProcess& target_process, VAddr address, std::size_t size) { + const u64 page_count{(size + PageSize - 1) / PageSize}; + + if (page_list.GetNumPages() != page_count) { + UNIMPLEMENTED_MSG("Page count does not match"); + } + + return target_process.PageTable().UnmapPages(address, page_list, KMemoryState::Shared); } } // namespace Kernel |