Shared Library Deduplication for Lower Storage and I/O Overhead
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Solution Overview
Problem
The increasing number of applications in electronic devices leads to redundant storage of shared libraries, causing waste of storage space and affecting I/O performance and memory utilization.
Innovation Solution
An electronic device method to identify and reuse shared libraries by determining identical file data across applications, deleting redundant shared library data, and mapping only the common library to memory for invocation, thereby reducing mapped data and improving storage and memory efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each APP stores its own shared libraries independently, then application functionality is ensured, but storage space is wasted due to redundant duplicate libraries
Solution Approach 1:
The patent merges duplicate shared libraries from multiple APPs into a single shared instance. When the system detects that different APPs contain identical shared library files, it consolidates them into one shared library that can be shared across multiple APPs, thereby reducing storage space while ensuring all APPs maintain their required functionality.
Solution Approach 2:
The patent creates a universal shared library that serves multiple APPs simultaneously. Instead of each APP having its own private copy of the same shared library, the system establishes a universal library that can be invoked by any APP that requires it, making the shared library resource multi-functional and accessible to multiple applications.
2Adaptability or versatility
If duplicate shared libraries are stored for each APP, then application independence is maintained, but I/O performance deteriorates due to repeated data mapping
Solution Approach 1:
The patent merges the mapping operations for duplicate shared libraries into a single unified mapping operation. By consolidating identical shared libraries into one instance, the system performs file mapping only once for the shared library rather than separately for each APP, thereby improving I/O performance while maintaining application independence through the shared access mechanism.
3Ease of operation
If multiple copies of the same shared library are stored, then each APP can access its library independently, but memory utilization decreases due to redundant mapped data
Solution Approach 1:
The patent establishes a universal shared library that can be accessed by multiple APPs simultaneously. When a shared library is loaded into memory, it becomes a shared resource that multiple APPs can access through the same memory mapping, eliminating redundant memory allocations and improving overall memory utilization while maintaining independent access capability for each APP.
Data Source
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AI summary
Embodiments of this application relate to the field of electronic device technologies and provide a method for reusing a shared library and an electronic device, to enable different applications APPs to invoke a same shared library during running, so as to improve utilization of storage space of an electronic product. A specific solution includes: An electronic device may determine whether a second shared library having same file data as a first shared library of a first APP exists in the electronic device. If the second shared library exists in the electronic device, a correspondence between a first index node (inode) and a file name of the first shared library is stored, and the file data of the first shared library is deleted from the electronic device. Then, when the electronic device runs the first APP to invoke the first shared library, the electronic device may search for the first inode corresponding to the file name of the first shared library, to read file data of the second shared library stored in a storage area indicated by the first inode.