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1/*
2 PBUFSTDC.h
3
4 Copyright (C) 2018 Paul C. Pratt
5
6 You can redistribute this file and/or modify it under the terms
7 of version 2 of the GNU General Public License as published by
8 the Free Software Foundation. You should have received a copy
9 of the license along with this file; see the file COPYING.
10
11 This file is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 license for more details.
15*/
16
17/*
18 Parameter BUFfers implemented with STanDard C library
19*/
20
21
22#if IncludePbufs
23LOCALVAR void *PbufDat[NumPbufs];
24#endif
25
26#if IncludePbufs
27LOCALFUNC tMacErr PbufNewFromPtr(void *p, ui5b count, tPbuf *r)
28{
29 tPbuf i;
30 tMacErr err;
31
32 if (! FirstFreePbuf(&i)) {
33 free(p);
34 err = mnvm_miscErr;
35 } else {
36 *r = i;
37 PbufDat[i] = p;
38 PbufNewNotify(i, count);
39 err = mnvm_noErr;
40 }
41
42 return err;
43}
44#endif
45
46#if IncludePbufs
47LOCALPROC PbufKillToPtr(void **p, ui5r *count, tPbuf r)
48{
49 *p = PbufDat[r];
50 *count = PbufSize[r];
51
52 PbufDisposeNotify(r);
53}
54#endif
55
56#if IncludePbufs
57GLOBALOSGLUFUNC tMacErr PbufNew(ui5b count, tPbuf *r)
58{
59 tMacErr err = mnvm_miscErr;
60
61 void *p = calloc(1, count);
62 if (NULL != p) {
63 err = PbufNewFromPtr(p, count, r);
64 }
65
66 return err;
67}
68#endif
69
70#if IncludePbufs
71GLOBALOSGLUPROC PbufDispose(tPbuf i)
72{
73 void *p;
74 ui5r count;
75
76 PbufKillToPtr(&p, &count, i);
77
78 free(p);
79}
80#endif
81
82#if IncludePbufs
83LOCALPROC UnInitPbufs(void)
84{
85 tPbuf i;
86
87 for (i = 0; i < NumPbufs; ++i) {
88 if (PbufIsAllocated(i)) {
89 PbufDispose(i);
90 }
91 }
92}
93#endif
94
95#if IncludePbufs
96#define PbufHaveLock 1
97#endif
98
99#if IncludePbufs
100LOCALFUNC ui3p PbufLock(tPbuf i)
101{
102 return (ui3p)PbufDat[i];
103}
104#endif
105
106#if IncludePbufs
107#define PbufUnlock(i)
108#endif
109
110#if IncludePbufs
111GLOBALOSGLUPROC PbufTransfer(ui3p Buffer,
112 tPbuf i, ui5r offset, ui5r count, blnr IsWrite)
113{
114 void *p = ((ui3p)PbufDat[i]) + offset;
115 if (IsWrite) {
116 (void) memcpy(p, Buffer, count);
117 } else {
118 (void) memcpy(Buffer, p, count);
119 }
120}
121#endif