RE: Solaris/AMD64 - RTESys_MemoryBarrier.s + Coroutines

> >Is the reason maybe an unimplemented assembler function in 
> >RTESys_MemoryBarrier.s? I used the "dummy" function provided in 
> >SPARC32...
> 
> Try the inline assembler from the Linux/x86_64 port 
> (translated to S10 syntax).
> 
> /* from RTESys_MemoryBarrier.h */
> #elif defined(LINUX) && defined(X86_64)
> 
> /* from #include <asm-x86_64/system.h> mb(),rmb(),wmb() definitions */
> 
> # define RTESys_MemoryBarrier()      __asm__ 
> __volatile__("mfence":::"memory")
> # define RTESys_ReadMemoryBarrier()  __asm__ 
> __volatile__("lfence":::"memory") # define 
> RTESys_WriteMemoryBarrier() __asm__ __volatile__("sfence":::"memory")
> 
> The developer who did the Linux/x86_64 port has vague 
> memories that there were also problems using a dummy implementation.

Inline is not working unfortunately, that's what I tried, because the syntax
is different. Instead I have done something like 

&if  $MACH == AMD64 and $OSSPEC = SVR4
        .file   "RTESys_MemoryBarrier.s"
        .text

        .globl RTESys_MemoryBarrier
        .align 4
        .globl RTESys_ReadMemoryBarrier
        .align 4
        .globl RTESys_WriteMemoryBarrier
        .align 4

RTESys_MemoryBarrier:
        sfence
        ret

RTESys_ReadMemoryBarrier:
        lfence
        ret

RTESys_WriteMemoryBarrier:
        mfence
        ret
&endif


This seems (!) to work now :-) thanx for the hint!

I can now bring the database to ADMIN but only, if I disable the coroutines,
with USE_COROUTINES YES, it coredumps in makecontext(), whether explicitly
aligned or not. 

(dbx) where
current thread: t@17
  [1] _makecontext(0x20000103d00, 0x1, 0xfffffd7ffedcbaf0,
0xfffffd7ffedcaf94, 0x200019a9000, 0x1), at 0xfffffd7ffed4a2ac
  [2] _elf_rtbndr(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0xfffffd7fff3c7e50
=>[3] en88RunCoroutineUKT(arg = 0xfffffd7ffec872b0), line 427 in "ven88.cpp"
  [4] eo07_PthreadEntry(arg = 0x20000122390), line 2356 in "veo07-k.c"
  [5] _thr_setup(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0xfffffd7ffedc7b4b
  [6] _lwp_start(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0xfffffd7ffedc7d80


Greetz,


SIEGENIA-AUBI KG
Informationswesen
 
i.A.
 
Markus Döhr
SAP-CC/BC, SAPDB-DBA

Tel.:    +49 6503 917-152
Fax:     +49 6503 917-7152
E-Mail: markus.doehr@xxxxxxxxxxxxxxxxx
Internet: http://www.siegenia-aubi.com 
  
> 

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