Questions tagged [dlclose]
6 questions
1
vote
0 answers
My executable has references to dlcose - but wherefor?
I'm trying to link some executable, built from C++ source files, and getting:
/usr/bin/ld: examples/CMakeFiles/whatever/main.cpp.o: undefined reference to symbol 'dlclose@@GLIBC_2.2.5'
Now, I know how to "fix" this:
How to fix undefined reference…
einpoklum
- 118,144
- 57
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- 684
1
vote
1 answer
Multiple load (dlopen) and unload (dlclose) of the same shared object calls resulting in segmentation fault
In my code, I have a for loop where first I am calling dlopen to load a shared object, then calling a function of the loaded library, and then dlclose to unload it. The first iteration of the loop works as expected but during the second iteration…
Aayush
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- 4
0
votes
0 answers
How to dlclose and unmap DSO even when tls_dtors exist, or reinitialize DSO when calling dlopen at second round
I want to get fresh DSO (which means it's global variable is set to init status) whenever I call dlopen. But when DSO contains tls dtor, dlclose will not unload/unmap this DSO, and at next time I dlopen it, it gives me old handler and old DSO…
0
votes
0 answers
Segmentation fault when closing a dynamic library with dlclose() where OpenMP directives are in use
I have these two files - "shared.c" and "test1.c"
/* shared.c */
#include "stdio.h"
#include "string.h"
#include "omp.h"
int ompfunc1(void){
int count = 0;
#pragma omp parallel num_threads(4)
{
#pragma omp atomic
count++;
}
…
0
votes
1 answer
Is there a way I can add a shared object file (.so) to ld.so.cache?
I wrote a simple C program that does a dlopen on an shared object:
handle = dlopen ("./MySharedObject.so", RTLD_LAZY);
if (!handle) {
fputs (dlerror(), stderr);
exit(1);
}
sleep(20)
dlclose(..)
Now I compile…
DZone
- 3
- 1
-2
votes
2 answers
Passing null to dlclose()
Is it safe to pass null (0, NULL, nullptr, ..) to dlclose()?
I could not find anything regarding this in the manual.
Joel Bodenmann
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