Hello, I know nothing about this except what I have learned in the past 4 hours so.........
After looking at the interlocked code and reading how PEACE and Mono implement these functions I think this will work. This is assuming that the SUN code for implementing this is compatible with pthreads. I only get one warrning about a cast in interlocked_xchg_ptr so I assume I am on the right track with this. I have not done any work at this low level before so is there was something wrong with using pthreads here? I am not worried about breaking compatiblity with exsting Win32/64 AXP apps as there are few left.
Changlog: Implement interlocked* function for the Alpha CPU
Index: wine/libs/port/interlocked.c =================================================================== RCS file: /home/wine/wine/libs/port/interlocked.c,v retrieving revision 1.3 diff -u -r1.3 interlocked.c --- wine/libs/port/interlocked.c 2 Jul 2003 04:29:33 -0000 1.3 +++ wine/libs/port/interlocked.c 20 Sep 2003 02:07:04 -0000 @@ -244,6 +244,65 @@ _lwp_mutex_unlock( &interlocked_mutex ); return retv; } + +#elif defined(__ALPHA__) || defined(__AXP__) +/* This code was adapted from the Sparc port. After checking + * the way Mono and PEACE implement interlocked functions on + * pthreads I think it will work. + */ +#include <pthread.h> + +static pthread_mutex_t interlocked_mutex = PTHREAD_MUTEX_INITIALIZER; + +long interlocked_cmpxchg( long *dest, long xchg, long compare ) +{ + pthread_mutex_lock( &interlocked_mutex ); + if (*dest == compare) *dest = xchg; + else compare = *dest; + pthread_mutex_unlock( &interlocked_mutex ); + return compare; +} + +void *interlocked_cmpxchg_ptr( void **dest, void *xchg, void *compare ) +{ + pthread_mutex_lock( &interlocked_mutex ); + if (*dest == compare) *dest = xchg; + else compare = *dest; + pthread_mutex_unlock( &interlocked_mutex ); + return compare; +} + +long interlocked_xchg( long *dest, long val ) +{ + long retv; + pthread_mutex_lock( &interlocked_mutex ); + retv = *dest; + *dest = val; + pthread_mutex_unlock( &interlocked_mutex ); + return retv; +} + +void *interlocked_xchg_ptr( void **dest, void *val ) +{ + long retv; + pthread_mutex_lock( &interlocked_mutex ); + retv = *dest; + *dest = val; + pthread_mutex_unlock( &interlocked_mutex ); + return retv; +} + +long interlocked_xchg_add( long *dest, long incr ) +{ + long retv; + pthread_mutex_lock( &interlocked_mutex ); + retv = *dest; + *dest += incr; + pthread_mutex_unlock( &interlocked_mutex ); + return retv; +} + #else # error You must implement the interlocked* functions for your CPU #endif +
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