Mechanism for a computer program to load a library (or other binary) into memory at runtime. Allows retrieving addresses of functions and variables contained in the library, executing functions, accessing variables, and unloading library from memory.
Questions tagged [dynamic-loading]
378 questions
11
votes
3 answers
jQuery getScript() vs document.createElement('script')
Assuming that both of these approaches load the script properly, and that I wait the appropriate amount of time before using the script (and/or use a callback), what are the major differences between these approaches.
Note: I understand the first…
bebeastie
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11
votes
2 answers
OpenGL on Linux: dlopen libGL.so
Most applications (and libraries) using OpenGL on Linux load libGL.so at runtime using dlopen API, instead of dynamically linking against it.
Why do they do this?
The only reason I can imagine is that it's because any graphic driver vendor provides…
peoro
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11
votes
3 answers
Is it possible to uniquely identify dynamically imported functions by their name?
I used
readelf --dyn-sym my_elf_binary | grep FUNC | grep UND
to display the dynamically imported functions of my_elf_binary, from the dynamic symbol table in the .dynsym section to be precise. Example output would be:
[...]
3: 00000000 0…
langlauf.io
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11
votes
2 answers
ghc 7.4.2, Dynamically calling modules
I am trying to load and execute module dynamically,
Below is my code
TestModule.hs
module TestModule
where
evaluate = "Hello !!!"
Invoke.hs
module Invoke
where
import GHC
import DynFlags
import GHC.Paths (libdir)
import…
Xinus
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9
votes
1 answer
Dynamic Loading Without extern "C"
I'd like to use libdl to dynamically load C++ in general. The problem is identifying symbols at runtime that have been name mangled.
As described here, one solution is to remove name mangling by using extern…
Praxeolitic
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8
votes
1 answer
Typescript dynamic module loading at runtime
I have defined an abstract BaseClass in a NodeJS Typescript project and I have a list of derived classes that implement and extend this BaseClass.
// baseModule.ts
export abstract class BaseClass {
constructor() {}
abstract method():…
Michael Sutherland
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8
votes
1 answer
How does JIT compilation in Java load dynamically compiled instructions into memory?
In Java, JVMs (e.g. HotSpot) are capable of JIT compilation and this technique is used to speed up execution by compiling bytecode into native code. My question is, how does this technically happen? My understanding was that modern processors mark…
rationalrevolt
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7
votes
1 answer
Getting undefined symbol error while dynamic loading of shared library
I am getting undefined symbol error while loading library dynamically.
Here is my code snippet that generates this error :
int main ()
{
void *lib_handle = NULL;
MyClass* (*create)();
void (*destroy)(MyClass*);
char *error;
…
Yuvi
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7
votes
1 answer
How to handle "panic: the impossible happened" and continue in Haskell
I have the following code that uses the GHC API to load modules and get the type of an expression:
typeObjects :: [String] -> [String] -> IO [Type]
typeObjects modules objects = do
defaultErrorHandler defaultDynFlags $ do
runGhc (Just libdir)…
mentics
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7
votes
3 answers
How to dynamically load a C# dll from a C++ DLL
I have a C++ application. This supports users' C++ plugin DLL's, it will dynamically load these DLL's and then be able to create and use the user's types dynamically. These user types derive from base types and interfaces defined in the main…
AlwaysTraining
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7
votes
0 answers
Pickle a dynamically imported class
I have a bunch of objects created from classes imported with
module = imp.load_source(packageName, packagePath)
that I need to pickle. It all works perfectly, as long as packagePath is directly in the Python path or the working dir.
But as soon as…
Nathan.Eilisha Shiraini
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7
votes
0 answers
Dynamic code loading w/ Haskell
I've been playing around with the plugins package. I want a host application to dynamically compile and load Haskell source files in a sandboxed environment. Compilation works just fine. Loading fails as soon as the plugin references modules…
W. Davis
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6
votes
1 answer
load time relocation and virtual memory
I am wondering what load-time relocation actually means on a system with virtual memory support.I was thinking that in a system with virtual memory every executable will have addresses starting from zero and at run-time the addresses will be…
vjain27
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6
votes
1 answer
When to actually use dlopen()? Does dlopen() means dynamic loading?
I have gone through below link, through which I understood how to create and use shared library.
https://www.cprogramming.com/tutorial/shared-libraries-linux-gcc.html
Step 1: Compiling with Position Independent Code
$ gcc -c -Wall -Werror -fpic…
dev
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6
votes
3 answers
Implementing Plugin Architecture - Dynamic DLL loading
I've an application which is basically a designer with preloaded controls where you can design your pages using the controls.
I'm planning to release more and more controls in the future. I don't want to release a new build for newly added controls…
NLV
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