52 lines
1.6 KiB
C
52 lines
1.6 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 "gtm_string.h"
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#include "rtnhdr.h"
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#include "zbreak.h"
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zbrk_struct *zr_get_free(z_records *zrecs, zb_code *addr)
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{
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z_records temp;
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zbrk_struct *z_ptr;
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/* NOTE: records are stored by decreasing addresses */
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assert(zrecs->free < zrecs->end);
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for (z_ptr = zrecs->beg; z_ptr < zrecs->free; z_ptr++)
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{
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if (z_ptr->mpc == addr)
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return (z_ptr);
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if (z_ptr->mpc < addr) /* insert here */
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break;
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}
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assert(z_ptr == zrecs->free || z_ptr->mpc < addr);
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if (1 == zrecs->end - zrecs->free) /* expand if necessary */
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{
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temp = *zrecs;
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zr_init(zrecs, 2 * (int)(zrecs->end - zrecs->beg));
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assert(2 * (temp.end - temp.beg) == (zrecs->end - zrecs->beg));
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memcpy((char *)zrecs->beg, (char *)temp.beg, (temp.free - temp.beg) * SIZEOF(zbrk_struct));
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assert(zrecs->free == zrecs->beg);
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zrecs->free += (temp.free - temp.beg);
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z_ptr = zrecs->beg + (z_ptr - temp.beg);
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free(temp.beg);
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}
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/* shift records down into the bottom spot which was allocated */
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memmove((char *)(z_ptr + 1), (char *)z_ptr, (zrecs->free - z_ptr) * SIZEOF(zbrk_struct));
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memset((char *)z_ptr, 0, SIZEOF(zbrk_struct));
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z_ptr->mpc = addr;
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zrecs->free++;
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return (z_ptr);
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}
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