48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
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/****************************************************************
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* *
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* Copyright 2001, 2009 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include "gdsroot.h"
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#include "gdsblk.h"
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#include "gdsbml.h"
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#include "gtm_facility.h"
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#include "fileinfo.h"
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#include "gdsbt.h"
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#include "gdsfhead.h"
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#include "dse.h"
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/* Include prototypes */
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#include "dse_is_blk_free.h"
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#include "t_qread.h"
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GBLREF sgmnt_addrs *cs_addrs;
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bool dse_is_blk_free (block_id blk, sm_int_ptr_t cycle, cache_rec_ptr_ptr_t cr)
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{
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uint4 status;
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uint4 index, offset;
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sm_uc_ptr_t bp;
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error_def(ERR_DSEBLKRDFAIL);
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index = (blk / cs_addrs->hdr->bplmap) * cs_addrs->hdr->bplmap;
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offset = blk - index;
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if(!(bp = t_qread (index, cycle, cr)))
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rts_error(VARLSTCNT(1) ERR_DSEBLKRDFAIL);
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status = dse_lm_blk_free(offset * BML_BITS_PER_BLK, bp + SIZEOF(blk_hdr));
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if (0 == status) /* status == 00 => blk is busy */
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return FALSE;
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else /* status == 01 and 11 => blk is free.
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Also illegal value is considered as free */
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return TRUE;
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}
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