MemoryMappedFile.h
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#pragma once
#include <string>
#include "File.h"
#include <map>
#include "os/Mutex.h"
namespace il2cpp
{
namespace os
{
// This enum must match the same enum in the Mono code, as it is used on the icall boundary.
enum MemoryMappedFileAccess
{
MMAP_FILE_ACCESS_READ_WRITE = 0,
MMAP_FILE_ACCESS_READ = 1,
MMAP_FILE_ACCESS_WRITE = 2,
MMAP_FILE_ACCESS_COPY_ON_WRITE = 3,
MMAP_FILE_ACCESS_READ_EXECUTE = 4,
MMAP_FILE_ACCESS_READ_WRITE_EXECUTE = 5,
};
// This enum must match the same enum in the Mono code, as it is used on the icall boundary.
enum MemoryMappedFileError
{
NO_MEMORY_MAPPED_FILE_ERROR = 0,
BAD_CAPACITY_FOR_FILE_BACKED,
CAPACITY_SMALLER_THAN_FILE_SIZE,
FILE_NOT_FOUND,
FILE_ALREADY_EXISTS,
PATH_TOO_LONG,
COULD_NOT_OPEN,
CAPACITY_MUST_BE_POSITIVE,
INVALID_FILE_MODE,
COULD_NOT_MAP_MEMORY,
ACCESS_DENIED,
CAPACITY_LARGER_THAN_LOGICAL_ADDRESS_SPACE
};
// This enum must match the same enum in the Mono code, as it is used on the icall boundary.
enum MemoryMappedFileMode
{
FILE_MODE_CREATE_NEW = 1,
FILE_MODE_CREATE = 2,
FILE_MODE_OPEN = 3,
FILE_MODE_OPEN_OR_CREATE = 4,
FILE_MODE_TRUNCATE = 5,
FILE_MODE_APPEND = 6,
};
class MemoryMappedFile
{
public:
typedef void* MemoryMappedFileHandle;
static FileHandle* Create(FileHandle* file, const char* mapName, int32_t mode, int64_t *capacity, MemoryMappedFileAccess access, int32_t options, MemoryMappedFileError* error);
static MemoryMappedFileHandle View(FileHandle* mappedFileHandle, int64_t* length, int64_t offset, MemoryMappedFileAccess access, int64_t* actualOffset, MemoryMappedFileError* error);
static void Flush(MemoryMappedFileHandle memoryMappedFileData, int64_t length);
static bool UnmapView(MemoryMappedFileHandle memoryMappedFileData, int64_t length);
static bool Close(FileHandle* file);
static void ConfigureHandleInheritability(FileHandle* file, bool inheritability);
};
}
}