dlopen

Does anyone know why a library initialized within dlopen() would initialize a static variable owned by the main program. Both the main program and shared library have a copy of the static variable, but for some reason the shared library re-initializes the main program's copy of the static variable and destructs it, causing a segfault when the main program attempts to destruct it. Is this a case of bad name mangling in the symbol table? This is a case where the runtime linker only wants a single active copy of a symbol in a process. If both a shared object and the executable have a copy of the

I want use function 'dlopen()' to invoke a dynamic library on iOS platform, is the function 'dlopen()' private API? NSProgrammer I've had success using dlopen on iOS for years. In my use case, I use dlopen to load public system frameworks on demand instead of having them loaded on app launch. Works great! [EDIT] - as of iOS 8, extensions and shared frameworks are prohibited from using dlopen , however the application itself can still use dlopen (and is now documented as being supported for not only Apple frameworks, but custom frameworks too). See the Deploying a Containing App to Older

----------------------------------------------------------------------------- dlsym ----------------------------------------------------------------------------- 测试dlsym打开的函数指针能不能多次调用 #include <stdio.h> #include <dlfcn.h> #include <unistd.h> #include <time.h> int main(){ int (*func)(int a, int b); void *handle = NULL; int c; char *myso = "./mylib.so"; if((handle = dlopen(myso, RTLD_NOW)) != NULL) { printf("success\n"); func = (void(*)())dlsym(handle, "add"); if(func != NULL){c=(*func)(1,2);} printf("1--%d",c); if(func != NULL){c=(*func)(2,2);} printf("\n2--%d",c); dlclose(handle); } else

I need to dynamically open a shared library lib.so if a specific condition is met at runtime. The library contains ~700 functions and I need to load all their symbols. A simple solution is to define the function pointers to all symbols contained in lib.so , load the library using dlopen and finally get the addresses of all symbols using dlsym . However, given the number of functions, the code implementing this solution is very cumbersome. I was wondering if a more elegant and concise solution exists, maybe with an appropriate use of macros for defining the function pointers. Thanks! You could

How can I get the path of the shared library from within the library itself? In other words, let's say that library X is loaded using dlopen() , how can I get access to the path that was used to load the said library from within the library itself? Note that I cannot have the agent that loaded the library in the first place hand me this parameter. UPDATED: Here is way that works with static variables: std::string wdir; namespace { class dynamic_library_load_unload_handler { public: dynamic_library_load_unload_handler(){ Dl_info dl_info; dladdr((void *) NP_Initialize, &dl_info); std::string

Since a couple of days, I constantly receive the same error while using MATLAB which happens at some point with dlopen . I am pretty new to MATLAB, and that is why I don't know what to do. Google doesn't seem to be helping me either. When I try to make an eigenvector, I get this: Error using eig LAPACK loading error: dlopen: cannot load any more object with static TLS I also get this while making a multiplication: Error using * BLAS loading error: dlopen: cannot load any more object with static TLS I did of course look for the solutions to this problem, but I don't understand too much and don