//
-// Open Service Platform
// Copyright (c) 2012 Samsung Electronics Co., Ltd.
//
// Licensed under the Apache License, Version 2.0 (the License);
*/
enum MemoryMappedFileFlag
{
- MEMORY_MAPPED_FILE_FLAG_SHARED = 0x01, /**< Changes are shared with other processes mapping the same file */
- MEMORY_MAPPED_FILE_FLAG_PRIVATE = 0x02, /**< Changes are not visible to other processes mapping the same file */
- MEMORY_MAPPED_FILE_FLAG_FIXED = 0x10 /**< This forces the system to use the specified mapping address exactly,
+ MEMORY_MAPPED_FILE_FLAG_SHARED = 0x01, /**< The changes are shared with other processes mapping the same file */
+ MEMORY_MAPPED_FILE_FLAG_PRIVATE = 0x02, /**< The changes are not visible to other processes mapping the same file */
+ MEMORY_MAPPED_FILE_FLAG_FIXED = 0x10 /**< The system is forced to use the specified mapping address exactly,
which should be a multiple of the page size */
};
/**
* @class MemoryMappedFile
- * @brief This class provides features mapping a file to virtual address space.
+ * @brief This class provides methods for mapping a file to virtual address space.
*
* @since 2.0
*
* @final This class is not intended for extension.
*
- * The %MemoryMappedFile class provides features for using a memory mapped file,
+ * The %MemoryMappedFile class provides methods for using a memory mapped file,
* which maps the data of a file to an application's virtual address space.
*
* @code
* #include <FApp.h>
*
* using namespace Tizen::Base;
+ * using namespace Tizen::Base::Runtime;
* using namespace Tizen::Base::Collection;
* using namespace Tizen::Io;
* using namespace Tizen::App;
* result
* MyApp::Execute(void)
* {
+ * File file;
* String filePath(App::GetInstance()->GetAppDataPath() + L”myFile.txt”);
* file.Construct(filePath, “w+);
*
public:
/**
- * The object is not fully constructed after this constructor is called. For full construction, the Construct() method must be called right after calling this constructor.
+ * The object is not fully constructed after this constructor is called. @n
+ * For full construction, the Construct() method must be called right after calling this constructor.
*
* @since 2.0
*/
~MemoryMappedFile(void);
/**
- * Initializes this instance of %MemoryMappedFile with a specified file.
+ * Initializes this instance of %MemoryMappedFile with the specified file.
*
* @since 2.0
*
* @exception E_SUCCESS The method is successful.
* @exception E_INVALID_ARG The specified @c file is not opened for reading. @n
* The opening mode should not be "w" or "a".
- * @remarks The specified @c file should be initialized by the Io::File::Construct() method.
+ * @remarks The specified @c file should be initialized by the Tizen::Io::File::Construct() method.
* @see Tizen::Io::File
*/
result Construct(const File& file);
* @since 2.0
*
* @return The mapped address space, @n
- * else @c null pointer if this method fails
- * @param[in] address A starting address of the mapping @n
+ * else @c null pointer if it fails
+ * @param[in] address The starting address of the mapping @n
* If the specified @c address is @c null, the system chooses the address.
* It should be a multiple of the page size.
* @param[in] length The length of the mapping space
* @param[in] offset The start offset of the specified file @n
* It should be a multiple of the page size.
* @exception E_SUCCESS The method is successful.
- * @exception E_ILLEGAL_ACCESS The specified @c flag is MEMORY_MAPPED_FILE_FLAG_SHARED and the specified @c
- * protection is MEMORY_PROTECTION_MODE_WRITE, but the specified file of
+ * @exception E_ILLEGAL_ACCESS The specified @c flag is ::MEMORY_MAPPED_FILE_FLAG_SHARED and the specified @c
+ * protection is Base::Runtime::MEMORY_PROTECTION_MODE_WRITE, but the specified file of
* MemoryMappedFile::Construct() is not opened with read-write mode.
- * @exception E_INVALID_ARG Either of the following conditions has occurred: @n
- * - The specified @c address or @c offset is not aligned on a page boundary. @n
- * - The specified @c length is not positive. @n
- * - The specified @c protection, @c flag, or @c offset @ is invalid. @n
- * - The specified @c flag cannot contain both MEMORY_MAPPED_FILE_FLAG_PRIVATE and
- * MEMORY_MAPPED_FILE_FLAG_SHARED.
+ * @exception E_INVALID_ARG Either of the following conditions has occurred:
+ * - The specified @c address or @c offset is not aligned on a page boundary.
+ * - The specified @c length is not positive.
+ * - The specified @c protection, @c flag, or @c offset is invalid.
+ * - The specified @c flag cannot contain both ::MEMORY_MAPPED_FILE_FLAG_PRIVATE and
+ * ::MEMORY_MAPPED_FILE_FLAG_SHARED.
* @exception E_MAX_EXCEEDED The number of mapped regions has exceeded the maximum limit.
* @exception E_OBJECT_LOCKED The mapped file has been locked.
- * @exception E_OUT_OF_MEMORY Either of the following conditions has occurred: @n
- * - The memory is insufficient. @n
- * - The specified @c flag is MEMORY_MAPPED_FILE_FLAG_FIXED, and the specified address
- * range exceeds that allowed for the address space of a current process.
- * @exception E_IO Either of the following conditions has occurred: @n
- * - The underlying file system does not support memory mapping. @n
- * - The specified @c protection is MEMORY_PROTECTION_MODE_EXEC, but the mapped file
- * exists on a file system that has been mounted no-exec.
- * @remarks The specific error code can be accessed using the GetLastResult() method. @n
- * When this instance is destructed, all mappings are deleted automatically.
+ * @exception E_OUT_OF_MEMORY Either of the following conditions has occurred:
+ * - The memory is insufficient.
+ * - The specified @c flag is ::MEMORY_MAPPED_FILE_FLAG_FIXED, and the specified @c address
+ * range exceeds that allowed for the address space of a current process.
+ * @exception E_IO Either of the following conditions has occurred:
+ * - The underlying file system does not support memory mapping.
+ * - The specified @c protection is Base::Runtime::MEMORY_PROTECTION_MODE_EXEC, but the mapped file
+ * exists on a file system that has been mounted no-exec.
+ * @remarks
+ * - The specific error code can be accessed using the GetLastResult() method.
+ * - When this instance is destructed, all mappings are deleted automatically.
* @see Tizen::Base::Runtime::MemoryManager
*/
void* Map(void* address, long long length, unsigned long protection, unsigned long flag, long long offset);
/**
* Deletes the mapping of the specified address space. @n
* Further references to the addresses within the range result in generation of an invalid memory access. @n
- * This method flushes all changes of a shared mapping to the correlated file on the permanent storage.
+ * This method flushes all the changes of a shared mapping to the correlated file on the permanent storage.
*
* @since 2.0
*
* @param[in] address The memory mapping address to unmap
* @param[in] length The length of the mapping space
* @exception E_SUCCESS The method is successful.
- * @exception E_INVALID_ARG Either of the following conditions has occurred: @n
- * - The specified @c address is not aligned on a page boundary. @n
- * - The specified @c length is not positive. @n
- * - The specified address range is out of the valid address space of a current process.
+ * @exception E_INVALID_ARG Either of the following conditions has occurred:
+ * - The specified @c address is not aligned on a page boundary.
+ * - The specified @c length is not positive.
+ * - The specified address range is out of the valid address space of the current process.
* @remarks When this instance is destructed, all mappings of the instance are not unmapped automatically.
*/
result Unmap(void* address, long long length);
/**
- * Flushes all changes of an address range to the correlated file on the permanent storage.
+ * Flushes all the changes of an address range to the correlated file on the permanent storage.
*
* @since 2.0
*
* @param[in] length The length of the mapping space
* @param[in] syncFlag The synchronization option
* @exception E_SUCCESS The method is successful.
- * @exception E_INVALID_ARG Either of the following conditions has occurred: @n
- * - The specified @c address is not aligned on a page boundary. @n
- * - The specified @c length is not positive. @n
- * - The specified @c syncFlag is invalid. @n
+ * @exception E_INVALID_ARG Either of the following conditions has occurred:
+ * - The specified @c address is not aligned on a page boundary.
+ * - The specified @c length is not positive.
+ * - The specified @c syncFlag is invalid.
* - The specified @c address space is not mapped.
- * @exception E_IO Either of the following conditions has occurred: @n
- * - An unexpected device failure has occurred as the media ejected suddenly. @n
+ * @exception E_IO Either of the following conditions has occurred:
+ * - An unexpected device failure has occurred as the media ejected suddenly.
* - %File corruption is detected.
* @remarks The specific page size of a current file system is provided by Tizen::System::SystemInfo class with
* "StorageInfo" key.
projects / platform / framework / native / appfw.git / blobdiff