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FIO: Make shmem behaviors reflect 3.10

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Current functionality works to some extent on Windows and x86 Linux and OS X
This commit is contained in:
Mark Pizzolato 2018-06-05 01:39:41 -07:00
parent eea30cb7a5
commit 1a7412a276
1 changed files with 37 additions and 1 deletions
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38
sim_fio.c
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@ -547,6 +547,7 @@ if ((stbuf.st_mode & S_IFIFO)) {
return -1;
}
#if defined (__linux__) || defined (__APPLE__)
#include <sys/mman.h>
struct SHMEM {
@ -616,15 +617,50 @@ free (shmem);
int32 sim_shmem_atomic_add (int32 *p, int32 v)
{
#if defined (HAVE_GCC_SYNC_BUILTINS)
return __sync_add_and_fetch((int *) p, v);
#else
return *p + v;
#endif
}
t_bool sim_shmem_atomic_cas (int32 *ptr, int32 oldv, int32 newv)
{
#if defined (HAVE_GCC_SYNC_BUILTINS)
return __sync_bool_compare_and_swap (ptr, oldv, newv);
#else
if (*ptr == oldv) {
*ptr = newv;
return 1;
}
else
return 0;
#endif
}
#endif
#else /* !(defined (__linux__) || defined (__APPLE__)) */
t_stat sim_shmem_open (const char *name, size_t size, SHMEM **shmem, void **addr)
{
return SCPE_NOFNC;
}
void sim_shmem_close (SHMEM *shmem)
{
}
int32 sim_shmem_atomic_add (int32 *p, int32 v)
{
return -1;
}
t_bool sim_shmem_atomic_cas (int32 *ptr, int32 oldv, int32 newv)
{
return FALSE;
}
#endif /* defined (__linux__) || defined (__APPLE__) */
#endif /* defined (_WIN32) */
#if defined(__VAX)
/*