74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
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/*
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* Copyright (c) 1989, 1990, 1991 by the University of Washington
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* Copyright (c) 1993 by the University of Southern California
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*
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* For copying and distribution information, please see the files
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* <uw-copyright.h> and <usc-copyr.h>.
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*
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* Written by bcn 1989-91 as part of the Prospero distribution
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* Modified by bcn 1/93 changed to conform to ardp.h
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* Modified by swa 12/93 threads added.
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*/
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#include <uw-copyright.h>
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#include <usc-copyr.h>
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#include <ardp.h>
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#include <stdlib.h> /* For malloc or free */
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#include <pfs_threads.h>
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#include <mitra_macros.h>
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/* "free" conflicted with free() - Mitra */
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static PTEXT lfree = NOPKT; /* locked with p_th_mutexPTEXT */
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int ptext_count = 0;
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int ptext_max = 0;
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/*
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* ardp_ptalloc - allocate and initialize ptext structure
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*
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* ardp_ptalloc returns a pointer to an initialized structure of type
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* PTEXT. If it is unable to allocate such a structure, it
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* returns NULL (NOPKT).
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*/
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PTEXT
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ardp_ptalloc()
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{
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PTEXT pt;
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TH_STRUC_ALLOC(ptext,PTEXT,pt);
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/* Initialize and fill in default values. */
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pt->seq = 0;
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pt->length = 0;
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/* The offset is to leave room for additional headers */
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pt->start = pt->dat + ARDP_PTXT_HDR;
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pt->text = pt->start;
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pt->ioptr = pt->start;
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pt->mbz = 0;
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return(pt);
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}
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/*
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* ardp_ptfree - free a PTEXT structure
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*
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* ardp_ptfree takes a pointer to a PTEXT structure and adds it to
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* the free list for later reuse.
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*/
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void ardp_ptfree(pt)
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PTEXT pt;
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{
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TH_STRUC_FREE(ptext,PTEXT,pt);
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}
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/*
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* ardp_ptlfree - free a PTEXT structure
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*
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* ardp_ptlfree takes a pointer to a PTEXT structure frees it and any linked
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* PTEXT structures. It is used to free an entrie list of PTEXT
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* structures.
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*/
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void ardp_ptlfree(pt)
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PTEXT pt;
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{
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TH_STRUC_LFREE(PTEXT,pt,ardp_ptfree);
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}
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