1berry/postgres
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Another try at the inlined MIPS spinlock code. Can't test this myself,

Browse Source 
but for sure it's not any more broken than the prior version.
This commit is contained in:
Tom Lane 2005-08-26 22:04:42 +00:00
parent f9244df78f
commit 846319db3f
1 changed files with 12 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/include/storage/s_lock.h
View File

@ -66,7 +66,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* $PostgreSQL: pgsql/src/include/storage/s_lock.h,v 1.136 2005/08/26 14:47:35 tgl Exp $ * $PostgreSQL: pgsql/src/include/storage/s_lock.h,v 1.137 2005/08/26 22:04:42 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -464,25 +464,25 @@ typedef unsigned int slock_t;
static __inline__ int static __inline__ int
tas(volatile slock_t *lock) tas(volatile slock_t *lock)
{ {
register volatile slock_t *__l = lock; register volatile slock_t *_l = lock;
register int __r; register int _res;
register int _tmp;
__asm__ __volatile__( __asm__ __volatile__(
" .set push \n" " .set push \n"
" .set mips2 \n" " .set mips2 \n"
" .set noreorder \n" " .set noreorder \n"
" .set nomacro \n" " .set nomacro \n"
"1: ll %0, %1 \n" " ll %0, %2 \n"
" bne %0, $0, 1f \n" " or %1, %0, $1 \n"
" xori %0, 1 \n" " sc %1, %2 \n"
" sc %0, %1 \n" " xori %1, $1 \n"
" beq %0, $0, 1b \n" " or %0, %0, %1 \n"
" sync \n"
"1: .set pop " "1: .set pop "
: "=&r" (__r), "+R" (*__l) : "=&r" (_res), "=&r" (_tmp), "+R" (*_l)
: :
: "memory", "cc"); : "memory");
return __r; return _res;
} }
#endif /* __mips__ && !__sgi */ #endif /* __mips__ && !__sgi */