source: mainline/uspace/app/tester/mm/malloc1.c@ a35b458

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since a35b458 was a35b458, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 7 years ago

style: Remove trailing whitespace on _all_ lines, including empty ones, for particular file types.

Command used: tools/srepl '\s\+$' '' -- *.c *.h *.py *.sh *.s *.S *.ag

Currently, whitespace on empty lines is very inconsistent.
There are two basic choices: Either remove the whitespace, or keep empty lines
indented to the level of surrounding code. The former is AFAICT more common,
and also much easier to do automatically.

Alternatively, we could write script for automatic indentation, and use that
instead. However, if such a script exists, it's possible to use the indented
style locally, by having the editor apply relevant conversions on load/save,
without affecting remote repository. IMO, it makes more sense to adopt
the simpler rule.
  • Property mode set to 100644
File size: 6.5 KB
Line 
1/*
2 * Copyright (c) 2009 Martin Decky
3 * Copyright (c) 2009 Tomas Bures
4 * Copyright (c) 2009 Lubomir Bulej
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * - The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include <stdio.h>
32#include <stdlib.h>
33#include <stddef.h>
34#include "common.h"
35#include "../tester.h"
36
37/*
38 * The test consists of several phases which differ in the size of blocks
39 * they allocate. The size of blocks is given as a range of minimum and
40 * maximum allowed size. Each of the phases is divided into 3 subphases which
41 * differ in the probability of free and alloc actions. Second subphase is
42 * started when malloc returns 'out of memory' or when MAX_ALLOC is reached.
43 * Third subphase is started after a given number of cycles. The third subphase
44 * as well as the whole phase ends when all memory blocks are released.
45 */
46
47/*
48 * Subphases are defined separately here. This is for two reasons:
49 * 1) data are not duplicated, 2) we don't have to state beforehand
50 * how many subphases a phase contains.
51 */
52static subphase_t subphases_32B[] = {
53 {
54 .name = "Allocation",
55 .cond = {
56 .max_cycles = 200,
57 .no_memory = 1,
58 .no_allocated = 0,
59 },
60 .prob = {
61 .alloc = 90,
62 .free = 100
63 }
64 },
65 {
66 .name = "Alloc/Dealloc",
67 .cond = {
68 .max_cycles = 200,
69 .no_memory = 0,
70 .no_allocated = 0,
71 },
72 .prob = {
73 .alloc = 50,
74 .free = 100
75 }
76 },
77 {
78 .name = "Deallocation",
79 .cond = {
80 .max_cycles = 0,
81 .no_memory = 0,
82 .no_allocated = 1,
83 },
84 .prob = {
85 .alloc = 10,
86 .free = 100
87 }
88 }
89};
90
91static subphase_t subphases_128K[] = {
92 {
93 .name = "Allocation",
94 .cond = {
95 .max_cycles = 0,
96 .no_memory = 1,
97 .no_allocated = 0,
98 },
99 .prob = {
100 .alloc = 70,
101 .free = 100
102 }
103 },
104 {
105 .name = "Alloc/Dealloc",
106 .cond = {
107 .max_cycles = 30,
108 .no_memory = 0,
109 .no_allocated = 0,
110 },
111 .prob = {
112 .alloc = 50,
113 .free = 100
114 }
115 },
116 {
117 .name = "Deallocation",
118 .cond = {
119 .max_cycles = 0,
120 .no_memory = 0,
121 .no_allocated = 1,
122 },
123 .prob = {
124 .alloc = 30,
125 .free = 100
126 }
127 }
128};
129
130static subphase_t subphases_default[] = {
131 {
132 .name = "Allocation",
133 .cond = {
134 .max_cycles = 0,
135 .no_memory = 1,
136 .no_allocated = 0,
137 },
138 .prob = {
139 .alloc = 90,
140 .free = 100
141 }
142 },
143 {
144 .name = "Alloc/Dealloc",
145 .cond = {
146 .max_cycles = 200,
147 .no_memory = 0,
148 .no_allocated = 0,
149 },
150 .prob = {
151 .alloc = 50,
152 .free = 100
153 }
154 },
155 {
156 .name = "Deallocation",
157 .cond = {
158 .max_cycles = 0,
159 .no_memory = 0,
160 .no_allocated = 1,
161 },
162 .prob = {
163 .alloc = 10,
164 .free = 100
165 }
166 }
167};
168
169/*
170 * Phase definitions.
171 */
172static phase_t phases[] = {
173 {
174 .name = "32 B memory blocks",
175 .alloc = {
176 .min_block_size = 32,
177 .max_block_size = 32
178 },
179 .subphases = subphases_32B
180 },
181 {
182 .name = "128 KB memory blocks",
183 .alloc = {
184 .min_block_size = 128 * 1024,
185 .max_block_size = 128 * 1024
186 },
187 .subphases = subphases_128K
188 },
189 {
190 .name = "2500 B memory blocks",
191 .alloc = {
192 .min_block_size = 2500,
193 .max_block_size = 2500
194 },
195 .subphases = subphases_default
196 },
197 {
198 .name = "1 B .. 250000 B memory blocks",
199 .alloc = {
200 .min_block_size = 1,
201 .max_block_size = 250000
202 },
203 .subphases = subphases_default
204 }
205};
206
207static void do_subphase(phase_t *phase, subphase_t *subphase)
208{
209 for (unsigned int cycles = 0; /* always */; cycles++) {
210
211 if ((subphase->cond.max_cycles) &&
212 (cycles >= subphase->cond.max_cycles)) {
213 /*
214 * We have performed the required number of
215 * cycles. End the current subphase.
216 */
217 break;
218 }
219
220 /*
221 * Decide whether we alloc or free memory in this step.
222 */
223 unsigned int rnd = rand() % 100;
224 if (rnd < subphase->prob.alloc) {
225 /*
226 * Compute a random number lying in interval
227 * <min_block_size, max_block_size>
228 */
229 int alloc = phase->alloc.min_block_size +
230 (rand() % (phase->alloc.max_block_size - phase->alloc.min_block_size + 1));
231
232 mem_block_t *blk = alloc_block(alloc);
233 RETURN_IF_ERROR;
234
235 if (blk == NULL) {
236 TPRINTF("F(A)");
237 if (subphase->cond.no_memory) {
238 /* We filled the memory. Proceed to next subphase */
239 break;
240 }
241 } else {
242 TPRINTF("A");
243 fill_block(blk);
244 RETURN_IF_ERROR;
245 }
246
247 } else if (rnd < subphase->prob.free) {
248 mem_block_t *blk = get_random_block();
249 if (blk == NULL) {
250 TPRINTF("F(R)");
251 if (subphase->cond.no_allocated) {
252 /* We free all the memory. Proceed to next subphase. */
253 break;
254 }
255 } else {
256 TPRINTF("R");
257 check_block(blk);
258 RETURN_IF_ERROR;
259
260 free_block(blk);
261 RETURN_IF_ERROR;
262 }
263 }
264 }
265
266 TPRINTF("\n.. finished.\n");
267}
268
269static void do_phase(phase_t *phase)
270{
271 for (unsigned int subno = 0; subno < 3; subno++) {
272 subphase_t *subphase = &phase->subphases[subno];
273
274 TPRINTF(".. Sub-phase %u (%s)\n", subno + 1, subphase->name);
275 do_subphase(phase, subphase);
276 RETURN_IF_ERROR;
277 }
278}
279
280const char *test_malloc1(void)
281{
282 init_mem();
283
284 for (unsigned int phaseno = 0; phaseno < sizeof_array(phases);
285 phaseno++) {
286 phase_t *phase = &phases[phaseno];
287
288 TPRINTF("Entering phase %u (%s)\n", phaseno + 1, phase->name);
289
290 do_phase(phase);
291 if (error_flag)
292 break;
293
294 TPRINTF("Phase finished.\n");
295 }
296
297 TPRINTF("Cleaning up.\n");
298 done_mem();
299 if (error_flag)
300 return "Test failed";
301
302 return NULL;
303}
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