1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ch.h"
#include "test.h"
/**
* @page test_heap Memory Heap test
*
* File: @ref testheap.c
*
* <h2>Description</h2>
* This module implements the test sequence for the @ref heaps subsystem.
*
* <h2>Objective</h2>
* Objective of the test module is to cover 100% of the @ref heaps subsystem.
*
* <h2>Preconditions</h2>
* The module requires the following kernel options:
* - @p CH_USE_HEAP
* .
* In case some of the required options are not enabled then some or all tests
* may be skipped.
*
* <h2>Test Cases</h2>
* - @subpage test_heap_001
* .
* @file testheap.c
* @brief Heap test source file
* @file testheap.h
* @brief Heap header file
*/
#if CH_USE_HEAP
#define SIZE 16
static MemoryHeap test_heap;
/**
* @page test_heap_001 Allocation and fragmentation test
*
* <h2>Description</h2>
* Series of allocations/deallocations are performed in carefully designed
* sequences in order to stimulate all the possible code paths inside the
* allocator.<br>
* The test expects to find the heap back to the initial status after each
* sequence.
*/
static char *heap1_gettest(void) {
return "Heap, allocation and fragmentation test";
}
static void heap1_setup(void) {
chHeapInit(&test_heap, test.buffer, sizeof(union test_buffers));
}
static void heap1_execute(void) {
void *p1, *p2, *p3;
size_t n, sz;
/* Unrelated, for coverage only.*/
(void)chCoreStatus();
/*
* Test on the default heap in order to cover the core allocator at
* least one time.
*/
(void)chHeapStatus(NULL, &sz);
p1 = chHeapAlloc(NULL, SIZE);
test_assert(1, p1 != NULL, "allocation failed");
chHeapFree(p1);
p1 = chHeapAlloc(NULL, (size_t)-256);
test_assert(2, p1 == NULL, "allocation not failed");
/* Initial local heap state.*/
(void)chHeapStatus(&test_heap, &sz);
/* Same order.*/
p1 = chHeapAlloc(&test_heap, SIZE);
p2 = chHeapAlloc(&test_heap, SIZE);
p3 = chHeapAlloc(&test_heap, SIZE);
chHeapFree(p1); /* Does not merge.*/
chHeapFree(p2); /* Merges backward.*/
chHeapFree(p3); /* Merges both sides.*/
test_assert(3, chHeapStatus(&test_heap, &n) == 1, "heap fragmented");
/* Reverse order.*/
p1 = chHeapAlloc(&test_heap, SIZE);
p2 = chHeapAlloc(&test_heap, SIZE);
p3 = chHeapAlloc(&test_heap, SIZE);
chHeapFree(p3); /* Merges forward.*/
chHeapFree(p2); /* Merges forward.*/
chHeapFree(p1); /* Merges forward.*/
test_assert(4, chHeapStatus(&test_heap, &n) == 1, "heap fragmented");
/* Small fragments handling.*/
p1 = chHeapAlloc(&test_heap, SIZE + 1);
p2 = chHeapAlloc(&test_heap, SIZE);
chHeapFree(p1);
test_assert(5, chHeapStatus(&test_heap, &n) == 2, "invalid state");
p1 = chHeapAlloc(&test_heap, SIZE);
/* Note, the first situation happens when the alignment size is smaller
than the header size, the second in the other cases.*/
test_assert(6, (chHeapStatus(&test_heap, &n) == 1) ||
(chHeapStatus(&test_heap, &n) == 2), "heap fragmented");
chHeapFree(p2);
chHeapFree(p1);
test_assert(7, chHeapStatus(&test_heap, &n) == 1, "heap fragmented");
/* Skip fragment handling.*/
p1 = chHeapAlloc(&test_heap, SIZE);
p2 = chHeapAlloc(&test_heap, SIZE);
chHeapFree(p1);
test_assert(8, chHeapStatus(&test_heap, &n) == 2, "invalid state");
p1 = chHeapAlloc(&test_heap, SIZE * 2); /* Skips first fragment.*/
chHeapFree(p1);
chHeapFree(p2);
test_assert(9, chHeapStatus(&test_heap, &n) == 1, "heap fragmented");
/* Allocate all handling.*/
(void)chHeapStatus(&test_heap, &n);
p1 = chHeapAlloc(&test_heap, n);
test_assert(10, chHeapStatus(&test_heap, &n) == 0, "not empty");
chHeapFree(p1);
test_assert(11, chHeapStatus(&test_heap, &n) == 1, "heap fragmented");
test_assert(12, n == sz, "size changed");
}
const struct testcase testheap1 = {
heap1_gettest,
heap1_setup,
NULL,
heap1_execute
};
#endif /* CH_USE_HEAP.*/
/**
* @brief Test sequence for heap.
*/
const struct testcase * const patternheap[] = {
#if CH_USE_HEAP
&testheap1,
#endif
NULL
};
|
