What is Shared library?
A library loaded at run time by dynamic linking: .so on Linux, .dll on Windows. Built as position-independent code, its code pages can be shared by many processes.
Shared library in the explanations
The OS maps the shared library into each process's virtual address space so that pages of unchanging code and constants point to the same physical pages.
When 100 processes use the same shared library, how is phys…A dynamically linked program uses, at run time, the shared library named by its soname.
On Linux, when is the version number in a shared library's …A shared library's exported symbols might be overridden by a same-named definition in another module, so even internal calls must go through the PLT or GOT.
When building a shared library, what is the advantage of ex…
Questions that mention Shared library (7)
- When 100 processes use the same shared library, how is physical memory used?
- On Linux, when is the version number in a shared library's soname, such as the ".1" in libfoo.so.1, generally increased?
- When building a shared library, what is the advantage of exporting only the public functions and giving internal functions "hidden" symbol visibility?
- What is in the .text section of an executable?
- What is an advantage of dynamic linking (shared libraries)?
- Which describes position-independent code (PIC)?
- What does running the ldd command on an executable on Linux show?
Related terms
Dynamic linker Copy-on-write Procedure linkage table (PLT) Application binary interface (ABI) Dynamic linking Position-independent code Address space layout randomization (ASLR) BSS section Entry point Executable and Linkable Format (ELF)