221446 - Examine the usefulness of Mozilla as Managed Code / .NET / CLR

Status: RESOLVED WONTFIX

(SeaMonkey :: Build Config, enhancement)

Description

[Eric Murphy]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5b) Gecko/20030827
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5b) Gecko/20030827

What does anyone here think of the possibility of building Mozilla as managed
code (running in the .NET CLR)? I was able to do this (add /clr):

        CFLAGS="$CFLAGS -TC /clr -nologo"
        CXXFLAGS="$CXXFLAGS -TP /clr -nologo"

and Mozilla compiled as managed code without any errors. When I ran it, I got an
error about PRThread, but the CLR debugger (in VS.NET) popped up and showed me
xpcom/glue/nsGenericFactory.cpp where it thinks the error(s) are.

From the perpective of .NET developers, having Mozilla available as managed code
would be a very powerful feature because now Mozilla could integrate with other
.NET code.

Here is a link that provides some brief insight into this thinking:
http://www.vertigosoftware.com/Quake2.htm. They were able to extend Quake 2 with
pure .NET code, which is very cool.

Reproducible: Always

Steps to Reproduce:

Comment 1

[Daniel (Leaf) Nunes]

I will investigate this as soon as i can get my VC7 build to work :)

Comment 2

[Eric Murphy]

I played around with this a little more in the debug mode, I got this:

'mozilla.exe': Loaded 'C:\mozilla\dist\bin\mozilla.exe', Symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\ntdll.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\kernel32.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\mozilla\dist\bin\nspr4.dll', Symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\advapi32.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\rpcrt4.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\wsock32.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\ws2_32.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\msvcrt.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\ws2help.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\msvcr71d.dll', Symbols loaded.
'mozilla.exe': Loaded 'C:\mozilla\dist\bin\plc4.dll', Symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\user32.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\gdi32.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\shell32.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\shlwapi.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\msvcp71d.dll', Symbols loaded.
'mozilla.exe': Loaded
'C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.0.0_x-ww_1382d70a\comctl32.dll',
No symbols loaded.
'mozilla.exe': Loaded 'C:\mozilla\dist\bin\xpcom.dll', Symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\mscoree.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\mozilla\dist\bin\plds4.dll', Symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\ole32.dll', No symbols loaded.
'mozilla.exe': Loaded
'C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\mscorwks.dll', No symbols loaded.
'mozilla.exe': Loaded
'C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\msvcr71.dll', Symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\fusion.dll',
No symbols loaded.
'mozilla.exe': Loaded
'C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\mscorlib.dll', No symbols loaded.
'mozilla.exe': Loaded
'C:\WINDOWS\assembly\NativeImages1_v1.1.4322\mscorlib\1.0.5000.0__b77a5c561934e089_75341187\mscorlib.dll',
No symbols loaded.
'mozilla.exe': Loaded
'C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\mscorjit.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\nview.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\psapi.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\version.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\olepro32.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\oleaut32.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\ddraw.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\dciman32.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\clbcatq.dll', No symbols loaded.
'mozilla.exe': Loaded 'C:\WINDOWS\system32\comres.dll', No symbols loaded.
First-chance exception at 0x77e6d756 in mozilla.exe: 0xE0434F4D: 0xe0434f4d.
First-chance exception at 0x77e6d756 in mozilla.exe: 0xE0434F4D: 0xe0434f4d.
First-chance exception at 0x77e6d756 in mozilla.exe: 0xE0434F4D: 0xe0434f4d.
Unhandled exception at 0x77e6d756 in mozilla.exe: 0xE0434F4D: 0xe0434f4d.

Error comes up at malloc.c line 212:

>	msvcr71d.dll!_heap_alloc_base(unsigned int size=0)  Line 212	C

That came from the call stack:

 	kernel32.dll!77e6d756() 	
 	kernel32.dll!77e6d756() 	
 	mscorwks.dll!791b9d02() 	
 	mscorwks.dll!791be271() 	
 	mscorwks.dll!791be286() 	
 	mscorwks.dll!7921020d() 	
 	kernel32.dll!77e6d756() 	
 	mscorwks.dll!79210190() 	
 	mscorwks.dll!79210144() 	
 	mscorwks.dll!79256dcb() 	
 	ntdll.dll!77f588f5() 	
>	msvcr71d.dll!_heap_alloc_base(unsigned int size=0)  Line 212	C
 	mscorwks.dll!791d6a7e() 	
 	xpcom.dll!RegisterGenericFactory(nsIComponentRegistrar * registrar=0x002ab378,
const nsModuleComponentInfo * info=0x100a7f48)  Line 210 + 0xd	C++
 	xpcom.dll!NS_InitXPCOM2(nsIServiceManager * * result=0x0012ff3c, nsIFile *
binDirectory=0x00000000, nsIDirectoryServiceProvider *
appFileLocationProvider=0x002a5060)  Line 558 + 0x1b	C++
 	mozilla.exe!NS_InitXPCOM2(nsIServiceManager * * result=0x0012ff3c, nsIFile *
binDirectory=0x00000000, nsIDirectoryServiceProvider *
appFileLocationProvider=0x002a5060)  Line 160 + 0x14	C++
 	mozilla.exe!GRE_Startup()  Line 282 + 0x23	C++
 	mozilla.exe!main(int argc=1, char * * argv=0x002a4fa8)  Line 1590 + 0x5	C++
 	mozilla.exe!mainCRTStartup()  Line 398 + 0x11	C
 	kernel32.dll!77e7eb69() 	


I am not a C programmer, so I don't know what this means. Any insight would be
appreciated.

Comment 3

[Eric Murphy]

Oops, I forgot this disassembly (where the fault is):

...
#endif  /* _WIN64 */
        return HeapAlloc(_crtheap, 0, size);
1021A6A3  mov         edx,dword ptr [size] 
1021A6A6  push        edx  
1021A6A7  push        0    
1021A6A9  mov         eax,dword ptr [__crtheap (1027F5B4h)] 
1021A6AE  push        eax  
1021A6AF  call        dword ptr [__imp__HeapAlloc@12 (10267094h)] 
}
ecx,dword ptr [ebp-10h]            << Fault is here
...

Comment 4

[Mike Shaver (:shaver emeritus)]

Being able to extend Mozilla via pure-managed code doesn't require Mozilla
itself to be built 100% managed.  Some day I'll have time to return to
xpcom.net, which should suffice.

(I'm not really interested at all in mozilla-built-as-managed, removing from cc:)

Comment 5

[Chase Phillips]

Mass reassign of open bugs for [e-mail] to [e-mail].