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Merge pull request #1734 from lioncash/shared

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kernel/shared_memory: Make data members private, plus minor interface changes
This commit is contained in:
bunnei 2018-11-20 16:13:30 -08:00 committed by GitHub
parent ab292c501c 233e495c14
commit aa7e53ab5c
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 49 additions and 33 deletions
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20
src/core/hle/kernel/shared_memory.cpp
View file

@ -61,7 +61,7 @@ SharedPtr<SharedMemory> SharedMemory::Create(KernelCore& kernel, SharedPtr<Proce
}
SharedPtr<SharedMemory> SharedMemory::CreateForApplet(
KernelCore& kernel, std::shared_ptr<std::vector<u8>> heap_block, u32 offset, u32 size,
KernelCore& kernel, std::shared_ptr<std::vector<u8>> heap_block, std::size_t offset, u64 size,
MemoryPermission permissions, MemoryPermission other_permissions, std::string name) {
SharedPtr<SharedMemory> shared_memory(new SharedMemory(kernel));
@ -78,10 +78,10 @@ SharedPtr<SharedMemory> SharedMemory::CreateForApplet(
return shared_memory;
}
ResultCode SharedMemory::Map(Process* target_process, VAddr address, MemoryPermission permissions,
ResultCode SharedMemory::Map(Process& target_process, VAddr address, MemoryPermission permissions,
MemoryPermission other_permissions) {
const MemoryPermission own_other_permissions =
target_process == owner_process ? this->permissions : this->other_permissions;
&target_process == owner_process ? this->permissions : this->other_permissions;
// Automatically allocated memory blocks can only be mapped with other_permissions = DontCare
if (base_address == 0 && other_permissions != MemoryPermission::DontCare) {
@ -106,7 +106,7 @@ ResultCode SharedMemory::Map(Process* target_process, VAddr address, MemoryPermi
VAddr target_address = address;
// Map the memory block into the target process
auto result = target_process->VMManager().MapMemoryBlock(
auto result = target_process.VMManager().MapMemoryBlock(
target_address, backing_block, backing_block_offset, size, MemoryState::Shared);
if (result.Failed()) {
LOG_ERROR(
@ -116,14 +116,14 @@ ResultCode SharedMemory::Map(Process* target_process, VAddr address, MemoryPermi
return result.Code();
}
return target_process->VMManager().ReprotectRange(target_address, size,
return target_process.VMManager().ReprotectRange(target_address, size,
ConvertPermissions(permissions));
}
ResultCode SharedMemory::Unmap(Process* target_process, VAddr address) {
ResultCode SharedMemory::Unmap(Process& target_process, VAddr address) {
// TODO(Subv): Verify what happens if the application tries to unmap an address that is not
// mapped to a SharedMemory.
return target_process->VMManager().UnmapRange(address, size);
return target_process.VMManager().UnmapRange(address, size);
}
VMAPermission SharedMemory::ConvertPermissions(MemoryPermission permission) {
@ -132,7 +132,11 @@ VMAPermission SharedMemory::ConvertPermissions(MemoryPermission permission) {
return static_cast<VMAPermission>(masked_permissions);
}
u8* SharedMemory::GetPointer(u32 offset) {
u8* SharedMemory::GetPointer(std::size_t offset) {
return backing_block->data() + backing_block_offset + offset;
}
const u8* SharedMemory::GetPointer(std::size_t offset) const {
return backing_block->data() + backing_block_offset + offset;
}

56
src/core/hle/kernel/shared_memory.h
View file

@ -64,7 +64,7 @@ public:
*/
static SharedPtr<SharedMemory> CreateForApplet(KernelCore& kernel,
std::shared_ptr<std::vector<u8>> heap_block,
u32 offset, u32 size,
std::size_t offset, u64 size,
MemoryPermission permissions,
MemoryPermission other_permissions,
std::string name = "Unknown Applet");
@ -81,6 +81,11 @@ public:
return HANDLE_TYPE;
}
/// Gets the size of the underlying memory block in bytes.
u64 GetSize() const {
return size;
}
/**
* Converts the specified MemoryPermission into the equivalent VMAPermission.
* @param permission The MemoryPermission to convert.
@ -94,44 +99,51 @@ public:
* @param permissions Memory block map permissions (specified by SVC field)
* @param other_permissions Memory block map other permissions (specified by SVC field)
*/
ResultCode Map(Process* target_process, VAddr address, MemoryPermission permissions,
ResultCode Map(Process& target_process, VAddr address, MemoryPermission permissions,
MemoryPermission other_permissions);
/**
* Unmaps a shared memory block from the specified address in system memory
* @param target_process Process from which to umap the memory block.
* @param target_process Process from which to unmap the memory block.
* @param address Address in system memory where the shared memory block is mapped
* @return Result code of the unmap operation
*/
ResultCode Unmap(Process* target_process, VAddr address);
ResultCode Unmap(Process& target_process, VAddr address);
/**
* Gets a pointer to the shared memory block
* @param offset Offset from the start of the shared memory block to get pointer
* @return Pointer to the shared memory block from the specified offset
* @return A pointer to the shared memory block from the specified offset
*/
u8* GetPointer(u32 offset = 0);
u8* GetPointer(std::size_t offset = 0);
/// Process that created this shared memory block.
SharedPtr<Process> owner_process;
/// Address of shared memory block in the owner process if specified.
VAddr base_address;
/// Backing memory for this shared memory block.
std::shared_ptr<std::vector<u8>> backing_block;
/// Offset into the backing block for this shared memory.
std::size_t backing_block_offset;
/// Size of the memory block. Page-aligned.
u64 size;
/// Permission restrictions applied to the process which created the block.
MemoryPermission permissions;
/// Permission restrictions applied to other processes mapping the block.
MemoryPermission other_permissions;
/// Name of shared memory object.
std::string name;
/**
* Gets a constant pointer to the shared memory block
* @param offset Offset from the start of the shared memory block to get pointer
* @return A constant pointer to the shared memory block from the specified offset
*/
const u8* GetPointer(std::size_t offset = 0) const;
private:
explicit SharedMemory(KernelCore& kernel);
~SharedMemory() override;
/// Backing memory for this shared memory block.
std::shared_ptr<std::vector<u8>> backing_block;
/// Offset into the backing block for this shared memory.
std::size_t backing_block_offset = 0;
/// Size of the memory block. Page-aligned.
u64 size = 0;
/// Permission restrictions applied to the process which created the block.
MemoryPermission permissions{};
/// Permission restrictions applied to other processes mapping the block.
MemoryPermission other_permissions{};
/// Process that created this shared memory block.
SharedPtr<Process> owner_process;
/// Address of shared memory block in the owner process if specified.
VAddr base_address = 0;
/// Name of shared memory object.
std::string name;
};
} // namespace Kernel

4
src/core/hle/kernel/svc.cpp
View file

@ -789,7 +789,7 @@ static ResultCode MapSharedMemory(Handle shared_memory_handle, VAddr addr, u64 s
return ERR_INVALID_MEMORY_RANGE;
}
return shared_memory->Map(current_process, addr, permissions_type, MemoryPermission::DontCare);
return shared_memory->Map(*current_process, addr, permissions_type, MemoryPermission::DontCare);
}
static ResultCode UnmapSharedMemory(Handle shared_memory_handle, VAddr addr, u64 size) {
@ -819,7 +819,7 @@ static ResultCode UnmapSharedMemory(Handle shared_memory_handle, VAddr addr, u64
return ERR_INVALID_MEMORY_RANGE;
}
return shared_memory->Unmap(current_process, addr);
return shared_memory->Unmap(*current_process, addr);
}
/// Query process memory