test/util_allocator.h@7df0bcaecffa
test/util_allocator.h
Tue, 04 Oct 2022 19:25:07 +0200
- author
- Mike Becker <universe@uap-core.de>
- date
- Tue, 04 Oct 2022 19:25:07 +0200
- changeset 591
- 7df0bcaecffa
- parent 571
- f83583a0bbac
- child 628
- 1e2be40f0cb5
- permissions
- -rw-r--r--
fix over-optimization of strstr
1. it's actually less performant to frequently read bytes
from an array instead of using the native word length
2. the SBO buffer should be local and not static to allow
multi-threading usage
1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
29 #ifndef UCX_UTIL_ALLOCATOR_H
30 #define UCX_UTIL_ALLOCATOR_H
32 #include "cx/allocator.h"
34 #include <set>
36 struct CxTestingAllocator : public CxAllocator {
37 /**
38 * Total number of all allocations (malloc, calloc, realloc).
39 * A realloc() does only count when the memory has to be moved.
40 */
41 unsigned alloc_total = 0;
42 /**
43 * Number of failed allocations (malloc, calloc, realloc).
44 */
45 unsigned alloc_failed = 0;
46 /**
47 * Total number of freed pointers.
48 * A reallocation also counts as a free when the memory has to be moved.
49 */
50 unsigned free_total = 0;
51 /**
52 * Number of failed free invocations.
53 * A free() is considered failed, if it has not been performed on tracked memory.
54 */
55 unsigned free_failed = 0;
56 /**
57 * The set of tracked memory blocks.
58 */
59 std::set<void *> tracked;
61 /**
62 * Constructs a new testing allocator.
63 */
64 CxTestingAllocator();
66 /**
67 * Verifies that this allocator has been used.
68 *
69 * @return true if any allocation was attempted using this allocator
70 */
71 [[nodiscard]] bool used() const;
73 /**
74 * Verifies that all allocated memory blocks are freed and no free occurred twice.
75 *
76 * @return true iff all tracked allocations / deallocations were valid
77 */
78 [[nodiscard]] bool verify() const;
79 };
81 #endif /* UCX_UTIL_ALLOCATOR_H */
