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1
2 #ifndef ARAL_H
3 #define ARAL_H 1
4
5 #include "../libnetdata.h"
6
7 #define ARAL_MAX_NAME 23
8
9 typedef struct aral ARAL;
10
11 struct aral_page_type_stats {
12 PAD64(size_t) allocations;
13 PAD64(size_t) allocated_bytes;
14 PAD64(size_t) used_bytes;
15 PAD64(size_t) padding_bytes;
16 };
17
18 struct aral_statistics {
19 struct {
20 PAD64(size_t) allocations;
21 PAD64(size_t) allocated_bytes;
22 } structures;
23
24 struct aral_page_type_stats malloc;
25 struct aral_page_type_stats mmap;
26 };
27
28 // --------------------------------------------------------------------------------------------------------------------
29
30 const char *aral_name(ARAL *ar);
31
32 ARAL *aral_create(const char *name, size_t element_size, size_t initial_page_elements, size_t max_page_size,
33 struct aral_statistics *stats, const char *filename, const char **cache_dir,
34 bool mmap, bool lockless, bool dont_dump);
35
36 // --------------------------------------------------------------------------------------------------------------------
37
38 // return the size of the element, as requested
39 size_t aral_requested_element_size(ARAL *ar);
40
41 // return the exact memory footprint of the elements
42 size_t aral_actual_element_size(ARAL *ar);
43
44 // --------------------------------------------------------------------------------------------------------------------
45
46 size_t aral_optimal_malloc_page_size(void);
47 void aral_optimal_malloc_page_size_set(size_t size);
48
49 // --------------------------------------------------------------------------------------------------------------------
50
51 /*
52 *
53 * The total memory used by ARAL is:
54 *
55 * total = structures + used + free + padding
56 *
57 * or
58 *
59 * total = structures + allocated + padding
60 *
61 * always:
62 *
63 * allocated = used + free
64 *
65 * Hints:
66 * - allocated, used and free are about the requested element size.
67 * - structures includes the extension of the elements for the metadata aral needs.
68 * - padding is lost due to alignment requirements
69 *
70 */
71
72 size_t aral_structures_bytes(ARAL *ar);
73 size_t aral_free_bytes(ARAL *ar);
74 size_t aral_used_bytes(ARAL *ar);
75 size_t aral_padding_bytes(ARAL *ar);
76
77 struct aral_statistics *aral_get_statistics(ARAL *ar);
78
79 size_t aral_structures_bytes_from_stats(struct aral_statistics *stats);
80 size_t aral_free_bytes_from_stats(struct aral_statistics *stats);
81 size_t aral_used_bytes_from_stats(struct aral_statistics *stats);
82 size_t aral_padding_bytes_from_stats(struct aral_statistics *stats);
83
84 // --------------------------------------------------------------------------------------------------------------------
85
86 ARAL *aral_by_size_acquire(size_t size);
87 void aral_by_size_release(ARAL *ar);
88
89 size_t aral_by_size_structures_bytes(void);
90 size_t aral_by_size_free_bytes(void);
91 size_t aral_by_size_used_bytes(void);
92 size_t aral_by_size_padding_bytes(void);
93
94 struct aral_statistics *aral_by_size_statistics(void);
95
96 // --------------------------------------------------------------------------------------------------------------------
97
98 #ifdef NETDATA_TRACE_ALLOCATIONS
99
100 #define aral_callocz(ar) aral_callocz_internal(ar, false, __FILE__, __FUNCTION__, __LINE__)
101 #define aral_callocz_marked(ar) aral_callocz_internal(ar, true, __FILE__, __FUNCTION__, __LINE__)
102 #define aral_mallocz(ar) aral_mallocz_internal(ar, false, __FILE__, __FUNCTION__, __LINE__)
103 #define aral_mallocz_marked(ar) aral_mallocz_internal(ar, true, __FILE__, __FUNCTION__, __LINE__)
104 #define aral_freez(ar, ptr) aral_freez_internal(ar, ptr, __FILE__, __FUNCTION__, __LINE__)
105 #define aral_destroy(ar) aral_destroy_internal(ar, __FILE__, __FUNCTION__, __LINE__)
106
107 void *aral_callocz_internal(ARAL *ar, bool marked, const char *file, const char *function, size_t line);
108 void *aral_mallocz_internal(ARAL *ar, bool marked, const char *file, const char *function, size_t line);
109 void aral_freez_internal(ARAL *ar, void *ptr, const char *file, const char *function, size_t line);
110 void aral_destroy_internal(ARAL *ar, const char *file, const char *function, size_t line);
111
112 #else // NETDATA_TRACE_ALLOCATIONS
113
114 #define aral_mallocz(ar) aral_mallocz_internal(ar, false)
115 #define aral_mallocz_marked(ar) aral_mallocz_internal(ar, true)
116 #define aral_callocz(ar) aral_callocz_internal(ar, false)
117 #define aral_callocz_marked(ar) aral_callocz_internal(ar, true)
118 #define aral_freez(ar, ptr) aral_freez_internal(ar, ptr)
119 #define aral_destroy(ar) aral_destroy_internal(ar)
120
121
122 void *aral_callocz_internal(ARAL *ar, bool marked);
123 void *aral_mallocz_internal(ARAL *ar, bool marked);
124 void aral_freez_internal(ARAL *ar, void *ptr);
125 void aral_destroy_internal(ARAL *ar);
126
127 #endif // NETDATA_TRACE_ALLOCATIONS
128
129 // --------------------------------------------------------------------------------------------------------------------
130 // Declarations that do not depend on the NETDATA_TRACE_ALLOCATIONS macro
131 // shape, kept outside the conditional so callers in any compilation unit
132 // can see them in both build modes.
133
134 void aral_unmark_allocation(ARAL *ar, void *ptr);
135
136 int aral_unittest(size_t elements);
137
138 #ifdef NETDATA_INTERNAL_CHECKS
139 int aral_unittest_concurrency(void);
140 #endif
141
142 #endif // ARAL_H