#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: os_region.c,v 1.1.1.1 2003/02/15 04:56:09 zarzycki Exp $";
#endif
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#endif
#include "db_int.h"
int
__os_r_attach(dbenv, infop, rp)
DB_ENV *dbenv;
REGINFO *infop;
REGION *rp;
{
int ret;
OS_VMROUNDOFF(rp->size);
#ifdef DB_REGIONSIZE_MAX
if (rp->size > DB_REGIONSIZE_MAX) {
__db_err(dbenv, "region size %lu is too large; maximum is %lu",
(u_long)rp->size, (u_long)DB_REGIONSIZE_MAX);
return (EINVAL);
}
#endif
if (F_ISSET(dbenv, DB_ENV_PRIVATE)) {
#if defined(MUTEX_NO_MALLOC_LOCKS)
if (F_ISSET(dbenv, DB_ENV_THREAD)) {
__db_err(dbenv, "%s",
"architecture does not support locks inside process-local (malloc) memory");
__db_err(dbenv, "%s",
"application may not specify both DB_PRIVATE and DB_THREAD");
return (EINVAL);
}
#endif
if ((ret =
__os_malloc(dbenv, rp->size, &infop->addr)) != 0)
return (ret);
#if defined(UMRW) && !defined(DIAGNOSTIC)
memset(infop->addr, CLEAR_BYTE, rp->size);
#endif
return (0);
}
if (DB_GLOBAL(j_map) != NULL)
return (DB_GLOBAL(j_map)(infop->name,
rp->size, 1, 0, &infop->addr));
return (__os_r_sysattach(dbenv, infop, rp));
}
int
__os_r_detach(dbenv, infop, destroy)
DB_ENV *dbenv;
REGINFO *infop;
int destroy;
{
REGION *rp;
rp = infop->rp;
if (F_ISSET(dbenv, DB_ENV_PRIVATE)) {
__os_free(dbenv, infop->addr);
return (0);
}
if (DB_GLOBAL(j_unmap) != NULL)
return (DB_GLOBAL(j_unmap)(infop->addr, rp->size));
return (__os_r_sysdetach(dbenv, infop, destroy));
}