• Zarathustra <adam.chrapkowski gmail.com> May 25 2008

Zarathustra <adam.chrapkowski gmail.com> writes:

torhu Wrote:

 Zarathustra wrote:
 
 Oh, I find out something.
 The most crashes occur in similar calls (in DLL) like following:
 ________________________________________________________
 offs += fprintf(gl2ps->stream, "%%PDF-1.4\n");
 ________________________________________________________
 it looks like DLL haven't got access to FILE(gl2ps->stream), but why?
 The FILE is operand of gl2psBeginPage.
 Call of gl2psBeginPage function in my D code is in following function:
 ________________________________________________________
 extern (C) void
 SaveFile(){
 	FILE* fp;
 	int state = GL2PS_OVERFLOW;
 	int buffsize = 0;
             		
 	try{
 		fp = fopen("out.pdf", "wb");
 		while(state == GL2PS_OVERFLOW){
 			buffsize += 1024*1024;
 
 			gl2psBeginPage(
 				"test", 
 				"gl2psTestSimple", 
 				null, 
 				GL2PS_PDF, 
 				GL2PS_SIMPLE_SORT,
 				GL2PS_DRAW_BACKGROUND | GL2PS_USE_CURRENT_VIEWPORT,
 				GL_RGBA, 
 				0, 
 				null, 
 				0, 
 				0, 
 				0, 
 				buffsize, 
 				fp, 
 				"out.pdf"
 			);
 			
 			RenderFrame();
 			state = gl2psEndPage();
 		}
 		fclose(fp);
 		MessageBoxA(null, "File saved", "Information", MB_OK | MB_ICONINFORMATION);
 	}
 	catch(Object o){
 		MessageBoxA(null, cast(char*)o.toString(), "Critical Error", MB_OK |
MB_ICONERROR);
 	}
 }
 ________________________________________________________
 exactly: gl2ps->stream = fp;
 


 Have you tried debugging this code with ddbg, and checked what the 
 actual values of gl2ps and gl2ps->stream are when it crashes?
 
 http://ddbg.mainia.de/


I converted all gl2ps code to d and then started debugging with ddbg.
I have got a problem with allocating memory. I have got the following code:

if(gl2ps.bgcolor is cast(GL2PSrgba*)null){
    gl2ps.bgcolor = cast(GL2PSrgba*)malloc(GL2PSrgba.sizeof);
}

and error:
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at
?Alloc RTLPool  QAEPAXXZ (0x0042e8a9) thread(5368)

I don't know what does it mean.