dte test coverage

Directory: ./
File: src/util/ptr-array.c
Date: 2025-07-19 20:13:10
Exec Total Coverage
Lines: 69 69 100.0%
Functions: 10 10 100.0%
Branches: 30 34 88.2%
Line Branch Exec Source
1 #include <errno.h>
2 #include <string.h>
3 #include "ptr-array.h"
4
5 13520 static void ptr_array_grow(PointerArray *array)
6 {
7 13520 BUG_ON(array->alloc < array->count);
8 13520 const size_t alloc_min = 8;
9
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 13520 size_t alloc = MAX((array->alloc * 3) / 2, alloc_min);
10
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 13520 if (unlikely(alloc <= array->count)) {
11 − fatal_error(__func__, EOVERFLOW);
12 }
13 13520 array->ptrs = xrenew(array->ptrs, alloc);
14 13520 array->alloc = alloc;
15 13520 }
16
17 // This is separate from ptr_array_append(), to allow the hot path to be
18 // inlined. It also duplicates the append operation so as to allow tail
19 // calling, which appears to improve code generation.
20 13520 void ptr_array_grow_and_append(PointerArray *array, void *ptr)
21 {
22 13520 ptr_array_grow(array);
23 13520 array->ptrs[array->count++] = ptr;
24 13520 }
25
26 // Move a pointer from one index to another
27 34 void ptr_array_move(PointerArray *array, size_t from, size_t to)
28 {
29 34 BUG_ON(from >= array->count);
30 34 BUG_ON(to >= array->count);
31
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 34 if (unlikely(from == to)) {
32 return;
33 }
34
35 24 void **p = array->ptrs;
36 24 bool up = (from < to);
37
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 24 void *dest = up ? p + from : p + to + 1;
38
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 24 void *src = up ? p + from + 1 : p + to;
39
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 24 size_t difference = up ? to - from : from - to;
40
41 24 void *tmp = p[from];
42 24 memmove(dest, src, difference * sizeof(void*));
43 24 p[to] = tmp;
44 }
45
46 12 void ptr_array_insert(PointerArray *array, void *ptr, size_t idx)
47 {
48 12 size_t last = array->count;
49 12 BUG_ON(idx > last);
50 12 ptr_array_append(array, ptr); // last is now array->count - 1
51 12 ptr_array_move(array, last, idx);
52 12 }
53
54 // Free and remove and all pointers, without freeing the array itself
55 14975 void ptr_array_clear(PointerArray *array, FreeFunction free_ptr)
56 {
57
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 60783 for (size_t i = 0, n = array->count; i < n; i++) {
58 45808 do_free_value(free_ptr, array->ptrs[i]);
59 45808 array->ptrs[i] = NULL;
60 }
61 14975 array->count = 0;
62 14975 }
63
64 14975 void ptr_array_free_cb(PointerArray *array, FreeFunction free_ptr)
65 {
66 14975 ptr_array_clear(array, free_ptr);
67 14975 ptr_array_free_array(array);
68 14975 }
69
70 170 size_t ptr_array_remove(PointerArray *array, void *ptr)
71 {
72 170 size_t idx = ptr_array_index(array, ptr);
73 170 ptr_array_remove_index(array, idx);
74 170 return idx;
75 }
76
77 2176 void *ptr_array_remove_index(PointerArray *array, size_t idx)
78 {
79 2176 BUG_ON(idx >= array->count);
80 2176 void **ptrs = array->ptrs + idx;
81 2176 void *removed = *ptrs;
82 2176 memmove(ptrs, ptrs + 1, (--array->count - idx) * sizeof(void*));
83 2176 return removed;
84 }
85
86 // Return the first array index found to contain `ptr`, or SIZE_MAX
87 // if not found. See also: ptr_array_xindex(), ptr_array_bsearch().
88 2107 size_t ptr_array_index(const PointerArray *array, const void *ptr)
89 {
90
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 7122 for (size_t i = 0, n = array->count; i < n; i++) {
91
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 7122 if (array->ptrs[i] == ptr) {
92 return i;
93 }
94 }
95
96 // If `ptr` isn't found in the array, return -1 (SIZE_MAX). Callers
97 // should check that the returned index is less than `array->count`
98 // before indexing `array->ptrs` with it or use ptr_array_xindex()
99 // instead, if applicable.
100 return -1;
101 }
102
103 // Trim all leading NULLs and all but one trailing NULL (if any)
104 1895 void ptr_array_trim_nulls(PointerArray *array)
105 {
106 1895 size_t n = array->count;
107
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 1895 if (n == 0) {
108 return;
109 }
110
111 1894 void **ptrs = array->ptrs;
112
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 3791 while (n > 0 && ptrs[n - 1] == NULL) {
113 n--;
114 }
115
116
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 1894 if (n != array->count) {
117 // Leave 1 trailing NULL
118 1894 n++;
119 }
120
121
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 1894 if (n == 0 || ptrs[0] != NULL) {
122 // No leading NULLs; simply adjust count and return early
123 1891 array->count = n;
124 1891 return;
125 }
126
127 size_t i = 0;
128
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 7 while (i < n && ptrs[i] == NULL) {
129 4 i++;
130 }
131
132 3 BUG_ON(i == 0);
133 3 n -= i;
134 3 array->count = n;
135 3 memmove(ptrs, ptrs + i, n * sizeof(void*));
136 }
137