1 | #ifndef MEDIADBCACHE_H |
---|
2 | #define MEDIADBCACHE_H |
---|
3 | |
---|
4 | void debugmediadbcache() |
---|
5 | { |
---|
6 | int i, count = 0, maxcount = 0;; |
---|
7 | struct mediadbcache* node = NULL; |
---|
8 | |
---|
9 | for(i = 0; i < MEDIADBCACHEMAX; i++) |
---|
10 | { |
---|
11 | node = mediadbcache[i]; |
---|
12 | count = 0; |
---|
13 | while(node != NULL) |
---|
14 | { |
---|
15 | maxcount++; |
---|
16 | count++; |
---|
17 | node = node->next; |
---|
18 | } |
---|
19 | printf("hash=%d, count=%d\n", i, count); |
---|
20 | } |
---|
21 | printf("maxcount=%d\n", maxcount); |
---|
22 | } |
---|
23 | |
---|
24 | // flag 0: path + file |
---|
25 | // flag 1: file |
---|
26 | struct mediadb* getmediadb(char* path, char* file, int flag) |
---|
27 | { |
---|
28 | unsigned int hash; |
---|
29 | struct mediadbcache* node = NULL; |
---|
30 | |
---|
31 | hash = gethash(file) % MEDIADBCACHEMAX; |
---|
32 | if(hash < 0 || hash >= MEDIADBCACHEMAX) hash = 0; |
---|
33 | |
---|
34 | m_lock(&status.mediadbmutex, 17); |
---|
35 | node = mediadbcache[hash]; |
---|
36 | |
---|
37 | while(node != NULL) |
---|
38 | { |
---|
39 | if(ostrcmp(file, node->file) == 0) |
---|
40 | { |
---|
41 | if(flag == 0 && ostrrstr(path, node->path, -1, 1) == NULL) |
---|
42 | { |
---|
43 | node = node->next; |
---|
44 | continue; |
---|
45 | } |
---|
46 | m_unlock(&status.mediadbmutex, 17); |
---|
47 | return node->mediadbnode; |
---|
48 | } |
---|
49 | |
---|
50 | node = node->next; |
---|
51 | } |
---|
52 | |
---|
53 | m_unlock(&status.mediadbmutex, 17); |
---|
54 | return NULL; |
---|
55 | } |
---|
56 | |
---|
57 | struct mediadbcache* modifymediadbcache(char* path, char* file, struct mediadb* mnode) |
---|
58 | { |
---|
59 | unsigned int hash; |
---|
60 | //struct mediadbcache* node = NULL, *prev = NULL, *newnode = NULL; |
---|
61 | struct mediadbcache* node = NULL, *newnode = NULL; |
---|
62 | |
---|
63 | hash = gethash(file) % MEDIADBCACHEMAX; |
---|
64 | if(hash < 0 || hash >= MEDIADBCACHEMAX) hash = 0; |
---|
65 | |
---|
66 | newnode = (struct mediadbcache*)calloc(1, sizeof(struct mediadbcache)); |
---|
67 | if(newnode == NULL) |
---|
68 | { |
---|
69 | err("no memory"); |
---|
70 | return NULL; |
---|
71 | } |
---|
72 | |
---|
73 | //TODO: copy file??? |
---|
74 | newnode->file = file; |
---|
75 | newnode->path = path; |
---|
76 | newnode->mediadbnode = mnode; |
---|
77 | |
---|
78 | node = mediadbcache[hash]; |
---|
79 | /* |
---|
80 | prev = mediadbcache[hash]; |
---|
81 | |
---|
82 | if(node != NULL) |
---|
83 | { |
---|
84 | while(node != NULL) |
---|
85 | { |
---|
86 | prev = node; |
---|
87 | node = node->next; |
---|
88 | } |
---|
89 | prev->next = newnode; |
---|
90 | } |
---|
91 | else |
---|
92 | mediadbcache[hash] = newnode; |
---|
93 | */ |
---|
94 | mediadbcache[hash] = newnode; |
---|
95 | newnode->next = node; |
---|
96 | |
---|
97 | return newnode; |
---|
98 | } |
---|
99 | |
---|
100 | void delmediadbcache(char* file, struct mediadb* mnode) |
---|
101 | { |
---|
102 | unsigned int hash; |
---|
103 | struct mediadbcache *node = NULL, *prev = NULL; |
---|
104 | |
---|
105 | hash = gethash(file) % MEDIADBCACHEMAX; |
---|
106 | if(hash < 0 || hash >= MEDIADBCACHEMAX) hash = 0; |
---|
107 | node = mediadbcache[hash]; |
---|
108 | prev = mediadbcache[hash]; |
---|
109 | |
---|
110 | while(node != NULL) |
---|
111 | { |
---|
112 | if(node->mediadbnode == mnode) |
---|
113 | { |
---|
114 | if(node == mediadbcache[hash]) |
---|
115 | mediadbcache[hash] = node->next; |
---|
116 | else |
---|
117 | prev->next = node->next; |
---|
118 | |
---|
119 | free(node); |
---|
120 | node = NULL; |
---|
121 | break; |
---|
122 | } |
---|
123 | |
---|
124 | prev = node; |
---|
125 | node = node->next; |
---|
126 | } |
---|
127 | } |
---|
128 | |
---|
129 | #endif |
---|