N.P. :)
The problem is that runFunction expects a function returning void taking
a void ptr, (as can be seen by void (*)(void*)). The type of your
'runFunction' is actually void (TestFader::*)(void*), since it is a
member function.
I suggest you make 'runFunction' static, that should do the trick. Or,
if you want to run a member function on an object, you could do somethin
like this:
void launcher(void* p) {
reinterpret_cast<TestFader*>(p)->runFunction();
}
which, of course, could be static in TestFader as well.
Regards
/Marcus
Markus Straub wrote:
Oh, sorry for forgetting to post the error message!
I get a compiler error:
TestFader.cpp: In member function `int TestFader::startThread()':
TestFader.cpp:17: error: no matching function for call to `osg::Thread::
runFunction(<unknown type>, int, NULL)'
/usr/local/include/OpenSG/OSGThread.h:186: error: candidates are: bool
osg::PThreadBase::runFunction(void (*)(void*), unsigned int, void*)
make: *** [t] Error 1
the Makefile: (I just added all the compileflags that are used in the
OpenSG/Tutorials)
//-------------<begin Makefile>------------------
CC = g++
COMPILEFLAGS = -lopenal -D_GNU_SOURCE -DQT_CLEAN_NAMESPACE
-DOSG_WITH_GLUT -DOSG_WITH_TIF -DOSG_WITH_JPG -DOSG_WITH_PNG
-D_OSG_HAVE_CONFIGURED_H_ -DQT_NO_XINERAMA -DQT_NO_XRENDER
-DQT_NO_XFTFREETYPE -DQT_NO_XKB -DQT_NO_SM_SUPPORT -DQT_NO_IMAGEIO_MNG
-DQT_NO_IMAGEIO_JPEG -DQT_NO_STYLE_AQUA -DQT_NO_STYLE_MAC
-DQT_NO_STYLE_INTERLACE -DQT_NO_STYLE_COMPACT -ansi
-use_readonly_const -ftemplate-depth-100 -g -DOSG_DEBUG
-DOSG_WITH_GLUT -DOSG_WITH_TIF -DOSG_WITH_JPG -DOSG_WITH_PNG
-I/usr/include -I/usr/local/include -g -L/usr/lib
-L/usr/local/lib/dbg -lOSGWindowGLUT -lOSGSystem -lOSGBase -ltiff
-ljpeg -lpng -lz -lglut -lGLU -lGL -lXmu -lXi -lXt -lX11 -lpthread
-ldl -lm -L/usr/X11R6/lib
t:
$(CC) $(COMPILEFLAGS) -o t.out TestFader.cpp -Wall -pedantic
./t.out
//-------------<end Makefile>------------------
Kind regards, Markus
Marcus Lindblom wrote:
What is it that doesn't work? Compiler error? Link error? Runtime error?
Regards,
/Marcus
Markus Straub wrote:
Hi all,
I would like to know, if it is possible, to create an osg::Thread
from a c++ class-member-function. My guess is, that the osg::Thread
is not designed for that purpose, it relies on pthreads, doesn't it?
I created a simple program which uses threads in C:
//-------------<begin TestFader.c>------------------
#include <iostream.h>
#include <OpenSG/OSGGLUTWindow.h>
osg::Thread* tfadeOut;
void fadeOut(void *ptr){
cout << "it works!\n";
}
int startThread(){
// declaration & start of the thread
tfadeOut = dynamic_cast<osg::Thread
*>(osg::ThreadManager::the()->getThread("fOut"));
tfadeOut->runFunction(fadeOut, 0, NULL);
return 0;
}
int main(int argc, char **argv){
osg::osgInit(argc,argv);
startThread();
osg::Thread::join(tfadeOut);
return 0;
}
//-------------<end TestFader.c>------------------
This code works perfectly and prints out "it works". Nevertheless my
attempts to put the same code into a class won't bring any positive
results. My C++ code looks like this:
//-------------<begin TestFader.cpp>------------------
#include <iostream.h>
#include <OpenSG/OSGGLUTWindow.h>
class TestFader{
public:
osg::Thread* tfadeOut;
void fadeOut(void *ptr){
cout << "it works!\n";
}
int startThread(){
// declaration & start of the thread
tfadeOut = dynamic_cast<osg::Thread
*>(osg::ThreadManager::the()->getThread("fOut"));
tfadeOut->runFunction(TestFader::fadeOut, 0, NULL);
cout << "it works!\n";
return 0;
}
};
int main(int argc, char **argv){
TestFader *f = new TestFader();
osg::osgInit(argc,argv);
f->startThread();
osg::Thread::join(f->tfadeOut);
return 0;
}
//-------------<end TestFader.cpp>------------------
So has anybody got a hint for me on how to create threads from c++
class-member-functions with OSG-Threads? That would really be
appreciated.
Thanks, Markus
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