A data access system including a processor and a storage system including a main memory and a cache module. The cache module includes a FLC controller and a cache. The cache is configured as a FLC to be accessed prior to accessing the main memory. The processor is coupled to levels of cache separate from the FLC. The processor generates, in response to data required by the processor not being in the levels of cache, a physical address corresponding to a physical location in the storage system. The FLC controller generates a virtual address based on the physical address. The virtual address corresponds to a physical location within the FLC or the main memory. The cache module causes, in response to the virtual address not corresponding to the physical location within the FLC, the data required by the processor to be retrieved from the main memory.

In one implementation, a computer-implemented method can include receiving, at a driver running on a mobile computing device with a local power source, a command from an application for an allocation of volatile memory; allocating, by the driver, memory from a pool of volatile memory for the application; storing data in the allocated memory; detecting, by the driver, that a particular situation currently exists on the mobile computing device that will cause the data to be lost; and performing, by the driver, an operation with regard to the memory and the data that will cause the data to be preserved following a conclusion of the particular situation.

The present disclosure provides a cache cleaning method, a cache cleaning apparatus and a client, which improves a cache cleaning efficiency in a client and improves a user experience effectively. The method includes: detecting an amount of used caches in a mobile terminal; if the amount of used caches is larger than a preset threshold, sending a cache application request to an operating system of the mobile terminal so as to trigger a preset cache release rule in the operating system; and after the operating system releases corresponding caches according to the preset cache release rule, sending a cache release request to the operating system such that the operating system releases caches allocated for the cache application request according to the cache release request. The present disclosure may be used in a cache management technique of a mobile terminal.

A process running method and apparatus is disclosed. The method is: selecting a code page from a candidate process, storing only a code page of the candidate process into a swap partition, and releasing memory space occupied by the code page; updating a physical address that is of the code page and that is stored into a page entry; and when it is determined that the candidate process to which the code page belongs needs to be run, if the code page needs to be executed, directly executing the code page in the swap partition.

A linked-list-based method for application caching management is disclosed, the method including: when receiving application cached data, creating a node in a linked list for the cached data and obtaining a memory size of the cached data; obtaining a maximum memory size and a currently occupied memory size of the linked list; adding the memory size of the received cached data to the currently occupied memory size of the linked list to obtain a first memory size; and adding the node to the linked list if the first memory size is smaller than or equal to the maximum memory size. A linked-list-based device for application caching management is also provided.

Example memory reclaiming methods and apparatuses are provided to resolve a problem that application data is lost and a restart speed of an application becomes slower in a manner of reclaiming a memory by killing the application. One example memory reclaiming method includes determining an application program that occupies a to-be-reclaimed memory and selecting at least one virtual address space segment according to a running state of the application program. A virtual address space that is in the selected at least one virtual address space segment and that is occupied by the application program is reclaimed. The application program is not directly killed, but instead, only a memory occupied by application data that can be cleared in the running state is reclaimed according to the running state of the application program. Therefore, less application data is lost.

Methods and systems for performing garbage collection involving sensitive information on a mobile device are described herein. Secure information is received at a mobile device over a wireless network. The sensitive information is extracted from the secure information. A software program operating on the mobile device uses an object to access the sensitive information. Secure garbage collection is performed upon the object after the object becomes unreachable.

A storage apparatus managing method, applied to a first storage apparatus and a second storage apparatus coupled to an electronic apparatus, wherein the first storage apparatus comprises a local registering region and a global registering region, comprising: (a) receiving a read request indicating reading a target data unit from the second storage apparatus; (b) confirming whether the global registering region has the target data unit; (c) if yes, reading the target data unit from the global registering region, if not, confirming whether the local registering region has the target data unit; and (d) reading the target data unit from the local registering region if the local registering region has the target data unit, reading the target data unit from the second storage apparatus if the local registering region does not have the target data unit.

According to one general aspect, a method of preemptively caching data within a mobile device may include detecting that a triggering event has occurred. The method may also include, in response to the triggering event, automatically performing an action associated with the triggering event, wherein the action includes retrieving anticipated data from a remote device. The method may include caching at least part of the anticipated data within a memory of the mobile device. The method may include receiving a request, from a user, for requested data, wherein the requested data includes at least a portion of the anticipated data. The method may include fulfilling at least part of the request for the requested data by retrieving the anticipated data portion of the requested data from the memory of the mobile device.

A method includes, in one non-limiting embodiment, sending a request from a mass memory storage device to a host device, the request being one to allocate memory in the host device; writing data from the mass memory storage device to allocated memory of the host device; and subsequently reading the data from the allocated memory to the mass memory storage device. The memory may be embodied as flash memory, and the data may be related to a file system stored in the flash memory. The method enables the mass memory storage device to extend its internal volatile RAM to include RAM of the host device, enabling the internal RAM to be powered off while preserving data and context stored in the internal RAM.