shared-libraries

I am developing an open-source emulator project, and it has multiple, customizable native plug-ins. These plug-ins are built as native shared object libraries (.so files), and have various interfaces between native and Java through JNI. Rather than distribute the APK with every single plug-in ever created, and in order to allow folks to build their own custom plug-ins, I need a method of importing these .so files any time after the app has been installed. I've found that I can copy files to the folder /data/data/[package_name], but not to the lib/ sub-folder (because it is owned by the "system

We use a shared library defined in the websphere admin console to share classes between several applications. I was wondering if it is possible to use CDI (Context and Dependecy Injection) in these classes? If so do I just need to put the beans.xml in the jar that is in the shared library, or are there further steps? Note: I can't move away from using a shared library, as this would be too much refactoring work. No, classes included in a shared library are not considered as CDI beans. Only archives included in the application itself can be considered for CDI. 来源： https://stackoverflow.com

Is it possible to share executable pages on Linux for the sake of preserving space? I know that there are shared memory APIs that can be used to share memory between different processes but I don't think that is meant to be used for that. Basically, I want to have a shared memory region where some commonly used shared libraries can be loaded into. I want to get the dynamic linker to link against the preloaded (read only) images instead of having to load all of the shared library images into every single process (which seems like a waste). Is this possible on the Linux kernel? The Darwin kernel

I need to run a Python 2.7 script into a client critical machine, so I have permission to install nothing, and when I say nothing I mean nothing even into local dirs, so the solution I found is to pass him the script as a binary created with the batteries-included tool "freeze.py" http://wiki.python.org/moin/Freeze , and I also added required and unembedable .so libraries into the same folder (_io.so, _heapd.so, ...) and give them executable permisions. But when I try to execute the binary I get: Traceback (most recent call last): File "/usr/lib/python2.7/site.py", line 562, in <module> File "

While loading dynamic libraries by ::dlopen() , exporting symbols from executables can be done by -rdynamic option, but it exports all the symbols of the executable, which results in bigger binary size. Is there a way to export just specific function(s)? For example, I have testlib.cpp and main.cpp as below: testlib.cpp extern void func_export(int i); extern "C" void func_test(void) { func_export(4); } main.cpp #include <cstdio> #include <dlfcn.h> void func_export(int i) { ::fprintf(stderr, "%s: %d\n", __func__, i); } void func_not_export(int i) { ::fprintf(stderr, "%s: %d\n", __func__, i); }