src/utils.c

Mon, 03 Apr 2023 19:48:00 +0200

author
Mike Becker <universe@uap-core.de>
date
Mon, 03 Apr 2023 19:48:00 +0200
changeset 675
765cf785b7fa
parent 674
dc514a5d42a5
child 736
70885c3d15b0
permissions
-rw-r--r--

simplify cx_stream_ncopy()

483
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
1 /*
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
3 *
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
5 *
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
6 * Redistribution and use in source and binary forms, with or without
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
7 * modification, are permitted provided that the following conditions are met:
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
8 *
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
9 * 1. Redistributions of source code must retain the above copyright
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
10 * notice, this list of conditions and the following disclaimer.
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
11 *
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
12 * 2. Redistributions in binary form must reproduce the above copyright
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
13 * notice, this list of conditions and the following disclaimer in the
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
14 * documentation and/or other materials provided with the distribution.
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
15 *
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
26 * POSSIBILITY OF SUCH DAMAGE.
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
27 */
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
28
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
29 #include "cx/utils.h"
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
30
674
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
31 #define CX_STREAM_BCOPY_BUF_SIZE 8192
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
32 #define CX_STREAM_COPY_BUF_SIZE 1024
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
33
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
34 size_t cx_stream_bncopy(
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
35 void *src,
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
36 void *dest,
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
37 cx_read_func rfnc,
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
38 cx_write_func wfnc,
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
39 char *buf,
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
40 size_t bufsize,
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
41 size_t n
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
42 ) {
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
43 if (n == 0) {
483
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
44 return 0;
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
45 }
674
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
46
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
47 char *lbuf;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
48 size_t ncp = 0;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
49
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
50 if (buf) {
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
51 if (bufsize == 0) return 0;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
52 lbuf = buf;
483
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
53 } else {
674
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
54 if (bufsize == 0) bufsize = CX_STREAM_BCOPY_BUF_SIZE;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
55 lbuf = malloc(bufsize);
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
56 if (lbuf == NULL) {
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
57 return 0;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
58 }
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
59 }
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
60
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
61 size_t r;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
62 size_t rn = bufsize > n ? n : bufsize;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
63 while ((r = rfnc(lbuf, 1, rn, src)) != 0) {
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
64 r = wfnc(lbuf, 1, r, dest);
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
65 ncp += r;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
66 n -= r;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
67 rn = bufsize > n ? n : bufsize;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
68 if (r == 0 || n == 0) {
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
69 break;
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
70 }
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
71 }
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
72
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
73 if (lbuf != buf) {
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
74 free(lbuf);
483
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
75 }
674
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
76
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
77 return ncp;
483
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
78 }
674
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
79
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
80 size_t cx_stream_ncopy(
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
81 void *src,
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
82 void *dest,
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
83 cx_read_func rfnc,
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
84 cx_write_func wfnc,
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
85 size_t n
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
86 ) {
675
765cf785b7fa simplify cx_stream_ncopy()
Mike Becker <universe@uap-core.de>
parents: 674
diff changeset
87 char buf[CX_STREAM_COPY_BUF_SIZE];
765cf785b7fa simplify cx_stream_ncopy()
Mike Becker <universe@uap-core.de>
parents: 674
diff changeset
88 return cx_stream_bncopy(src, dest, rfnc, wfnc,
765cf785b7fa simplify cx_stream_ncopy()
Mike Becker <universe@uap-core.de>
parents: 674
diff changeset
89 buf, CX_STREAM_COPY_BUF_SIZE, n);
674
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
90 }
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
91
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
92 #ifndef CX_SZMUL_BUILTIN
dc514a5d42a5 add stream copy utils - fixes #254
Mike Becker <universe@uap-core.de>
parents: 483
diff changeset
93 #include "szmul.c"
483
929016224c3c add ported UCX buffer implementation
Mike Becker <universe@uap-core.de>
parents:
diff changeset
94 #endif

mercurial