81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/****************************************************************
|
|
* *
|
|
* Copyright 2009, 2010 Fidelity Information Services, Inc *
|
|
* *
|
|
* This source code contains the intellectual property *
|
|
* of its copyright holder(s), and is made available *
|
|
* under a license. If you do not know the terms of *
|
|
* the license, please stop and do not read further. *
|
|
* *
|
|
****************************************************************/
|
|
|
|
#include "mdef.h"
|
|
#include "gtm_string.h"
|
|
#include "gdsroot.h"
|
|
#include "gtm_facility.h"
|
|
#include "fileinfo.h"
|
|
#include "gdsbt.h"
|
|
#include "gdsfhead.h"
|
|
#include "error.h"
|
|
#include "filestruct.h"
|
|
#include "gdsblk.h"
|
|
#include "gdsbml.h"
|
|
#include "sleep_cnt.h"
|
|
#include "util.h"
|
|
#include "gtmmsg.h"
|
|
#include "wcs_sleep.h"
|
|
#include "interlock.h"
|
|
#include "mu_int_wait_rdonly.h"
|
|
|
|
#define NO_WRITE_ACCESS_ERR_STRING "Database requires flushing, which can't be performed without write access"
|
|
/* If a database is read-only then, wcs_flu cannot be called as the database is read-only. In such cases, we might
|
|
* want to wait for sometime for all the active writers to empty their write queues.
|
|
*/
|
|
boolean_t mu_int_wait_rdonly(sgmnt_addrs *csa, char *waiting_process)
|
|
{
|
|
int lcnt;
|
|
gd_region *reg;
|
|
cache_que_head_ptr_t crq;
|
|
VMS_ONLY(
|
|
cache_que_head_ptr_t crqwip;
|
|
)
|
|
boolean_t ok, was_crit;
|
|
|
|
error_def(ERR_BUFFLUFAILED);
|
|
error_def(ERR_DBRDONLY);
|
|
error_def(ERR_TEXT);
|
|
|
|
reg = csa->region;
|
|
crq = &csa->acc_meth.bg.cache_state->cacheq_active;
|
|
VMS_ONLY(crqwip = &csa->acc_meth.bg.cache_state->cacheq_wip;)
|
|
assert(reg->read_only);
|
|
for (lcnt = 1; (lcnt <= BUF_OWNER_STUCK) && ((0 != crq->fl) VMS_ONLY(|| (0 != crqwip->fl))); lcnt++)
|
|
{
|
|
# ifdef VMS
|
|
if (0 != crqwip->fl)
|
|
{
|
|
was_crit = csa->now_crit;
|
|
if (!was_crit)
|
|
grab_crit(reg);
|
|
ok = wcs_wtfini(reg);
|
|
if (!was_crit)
|
|
rel_crit(reg);
|
|
if (!ok)
|
|
{
|
|
gtm_putmsg(VARLSTCNT(6) ERR_BUFFLUFAILED, 4, LEN_AND_STR(waiting_process), DB_LEN_STR(reg));
|
|
return FALSE;
|
|
}
|
|
}
|
|
# endif
|
|
assert(!csa->now_crit); /* We better not hold crit before we start sleeping */
|
|
if (0 != crq->fl)
|
|
wcs_sleep(lcnt);
|
|
}
|
|
if (0 != crq->fl VMS_ONLY(|| 0 != crqwip->fl))
|
|
{ /* Cannot proceed for read-only data files */
|
|
gtm_putmsg(VARLSTCNT(8) ERR_DBRDONLY, 2, DB_LEN_STR(reg), ERR_TEXT, 2, LEN_AND_LIT(NO_WRITE_ACCESS_ERR_STRING));
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|