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Date:      Sat, 19 Jun 2004 18:43:26 +0200
From:      Michael Nottebrock <michaelnottebrock@gmx.net>
To:        freebsd-current@FreeBSD.org
Cc:        Frerich Raabe <raabe@kde.org>
Subject:   Re: dlclose problem
Message-ID:  <200406191843.26708.michaelnottebrock@gmx.net>
In-Reply-To: <200406191820.26499.michaelnottebrock@gmx.net>
References:  <200406191820.26499.michaelnottebrock@gmx.net>
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On Saturday 19 June 2004 18:20, Michael Nottebrock wrote:
> Attached is a small testcase made by Frerich Raabe=20

Since the mailinglist strips tarballs, here is the case uncompressed.

=2D-=20
   ,_,   | Michael Nottebrock               | lofi@freebsd.org
 (/^ ^\) | FreeBSD - The Power to Serve     | http://www.freebsd.org
   \u/   | K Desktop Environment on FreeBSD | http://freebsd.kde.org

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all: plugin.o dltest

clean:
	rm -f dltest plugin.o

plugin.o:
	g++ -shared -o plugin.o plugin.cc

dltest:
	g++ -Wl,--export-dynamic -o dltest dltest.cc

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#include <dlfcn.h>

#include <iostream>

using namespace std;

int main()
{
	typedef void( *PluginFunction )();

	void *pluginHandle = dlopen( "./plugin.o", RTLD_LAZY );
	if ( !pluginHandle ) {
		cerr << dlerror() << endl;
		return 1;
	}

	PluginFunction pluginFunction = ( PluginFunction )dlsym( pluginHandle, "entry" );

	const char *error = dlerror();
	if ( error ) {
		cerr << error << endl;
		return 1;
	}

	pluginFunction();

	dlclose( pluginHandle );
}


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#include <string>
#include <iostream>
using namespace std;

extern "C" {

void entry()
{
	static std::string s;

	s = "Hi";

	cout << "Plugin says " << s << endl;
}

}

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