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1 | /* nsmalloc: Simple pooled malloc() thing. */ | |
2 | ||
3 | #include <stdlib.h> | |
4 | #include <string.h> | |
5 | ||
6 | #include "nsmalloc.h" | |
7 | #define __NSMALLOC_C | |
8 | #undef __NSMALLOC_H | |
9 | #include "nsmalloc.h" | |
10 | ||
11 | #include "../core/hooks.h" | |
12 | #include "../core/error.h" | |
13 | ||
14 | struct nsmpool nsmpools[MAXPOOL]; | |
15 | ||
16 | #ifndef USE_NSMALLOC_VALGRIND | |
17 | ||
18 | void *nsmalloc(unsigned int poolid, size_t size) { | |
19 | struct nsminfo *nsmp; | |
20 | ||
21 | if (poolid >= MAXPOOL) | |
22 | return NULL; | |
23 | ||
24 | /* Allocate enough for the structure and the required data */ | |
25 | nsmp=(struct nsminfo *)malloc(sizeof(struct nsminfo)+size); | |
26 | ||
27 | if (!nsmp) | |
28 | return NULL; | |
29 | ||
30 | nsmp->size=size; | |
31 | nsmpools[poolid].size+=size; | |
32 | nsmpools[poolid].count++; | |
33 | ||
34 | nsmp->next=nsmpools[poolid].first.next; | |
35 | nsmp->prev=&nsmpools[poolid].first; | |
36 | if (nsmpools[poolid].first.next) | |
37 | nsmpools[poolid].first.next->prev=nsmp; | |
38 | nsmpools[poolid].first.next=nsmp; | |
39 | ||
40 | return (void *)nsmp->data; | |
41 | } | |
42 | ||
43 | void *nscalloc(unsigned int poolid, size_t nmemb, size_t size) { | |
44 | size_t total = nmemb * size; | |
45 | void *m; | |
46 | ||
47 | m = nsmalloc(poolid, total); | |
48 | if(!m) | |
49 | return NULL; | |
50 | ||
51 | memset(m, 0, total); | |
52 | ||
53 | return m; | |
54 | } | |
55 | ||
56 | /* we dump core on ptr == NULL */ | |
57 | void nsfree(unsigned int poolid, void *ptr) { | |
58 | struct nsminfo *nsmp; | |
59 | ||
60 | if (!ptr || poolid >= MAXPOOL) | |
61 | return; | |
62 | ||
63 | /* evil */ | |
64 | nsmp=(struct nsminfo*)ptr - 1; | |
65 | ||
66 | /* always set as we have a sentinel */ | |
67 | nsmp->prev->next=nsmp->next; | |
68 | if (nsmp->next) | |
69 | nsmp->next->prev=nsmp->prev; | |
70 | ||
71 | nsmpools[poolid].size-=nsmp->size; | |
72 | nsmpools[poolid].count--; | |
73 | ||
74 | free(nsmp); | |
75 | return; | |
76 | } | |
77 | ||
78 | void *nsrealloc(unsigned int poolid, void *ptr, size_t size) { | |
79 | struct nsminfo *nsmp, *nsmpn; | |
80 | ||
81 | if (ptr == NULL) | |
82 | return nsmalloc(poolid, size); | |
83 | ||
84 | if (size == 0) { | |
85 | nsfree(poolid, ptr); | |
86 | return NULL; | |
87 | } | |
88 | ||
89 | if (poolid >= MAXPOOL) | |
90 | return NULL; | |
91 | ||
92 | /* evil */ | |
93 | nsmp=(struct nsminfo *)ptr - 1; | |
94 | ||
95 | if (size == nsmp->size) | |
96 | return (void *)nsmp->data; | |
97 | ||
98 | nsmpn=(struct nsminfo *)realloc(nsmp, sizeof(struct nsminfo)+size); | |
99 | if (!nsmpn) | |
100 | return NULL; | |
101 | ||
102 | nsmpools[poolid].size+=size-nsmpn->size; | |
103 | nsmpn->size=size; | |
104 | ||
105 | /* always set as we have a sentinel */ | |
106 | nsmpn->prev->next=nsmpn; | |
107 | ||
108 | if (nsmpn->next) | |
109 | nsmpn->next->prev=nsmpn; | |
110 | ||
111 | return (void *)nsmpn->data; | |
112 | } | |
113 | ||
114 | void nsfreeall(unsigned int poolid) { | |
115 | struct nsminfo *nsmp, *nnsmp; | |
116 | ||
117 | if (poolid >= MAXPOOL) | |
118 | return; | |
119 | ||
120 | for (nsmp=nsmpools[poolid].first.next;nsmp;nsmp=nnsmp) { | |
121 | nnsmp=nsmp->next; | |
122 | free(nsmp); | |
123 | } | |
124 | ||
125 | nsmpools[poolid].first.next=NULL; | |
126 | nsmpools[poolid].size=0; | |
127 | nsmpools[poolid].count=0; | |
128 | } | |
129 | ||
130 | void nscheckfreeall(unsigned int poolid) { | |
131 | if (poolid >= MAXPOOL) | |
132 | return; | |
133 | ||
134 | if (nsmpools[poolid].first.next) { | |
135 | Error("core",ERR_INFO,"nsmalloc: Blocks still allocated in pool #%d (%s): %zub, %lu items",poolid,nsmpoolnames[poolid]?nsmpoolnames[poolid]:"??",nsmpools[poolid].size,nsmpools[poolid].count); | |
136 | nsfreeall(poolid); | |
137 | } | |
138 | } | |
139 | ||
140 | void nsexit(void) { | |
141 | unsigned int i; | |
142 | ||
143 | for (i=0;i<MAXPOOL;i++) | |
144 | nsfreeall(i); | |
145 | } | |
146 | ||
147 | #else | |
148 | ||
149 | void *nsmalloc(unsigned int poolid, size_t size) { | |
150 | return malloc(size); | |
151 | } | |
152 | ||
153 | void *nscalloc(unsigned int poolid, size_t nmemb, size_t size) { | |
154 | return calloc(nmemb, size); | |
155 | } | |
156 | ||
157 | void *nsrealloc(unsigned int poolid, void *ptr, size_t size) { | |
158 | return realloc(ptr, size); | |
159 | } | |
160 | ||
161 | void nsfree(unsigned int poolid, void *ptr) { | |
162 | if(ptr) | |
163 | free(ptr); | |
164 | } | |
165 | ||
166 | void nsfreeall(unsigned int poolid) { | |
167 | } | |
168 | ||
169 | void nsexit(void) { | |
170 | } | |
171 | ||
172 | void nscheckfreeall(unsigned int poolid) { | |
173 | } | |
174 | ||
175 | #endif | |
176 |