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2c5db955 CP |
1 | /* hooks.c */ |
2 | ||
3 | #include "hooks.h" | |
4 | #include <assert.h> | |
5 | #include "../lib/array.h" | |
6 | ||
7 | array hooks[HOOKMAX]; | |
a451a113 | 8 | unsigned int hookqueuelength; |
2c5db955 CP |
9 | |
10 | void inithooks() { | |
11 | int i; | |
12 | ||
526e7c1d | 13 | hookqueuelength=0; |
2c5db955 CP |
14 | for (i=0;i<HOOKMAX;i++) { |
15 | array_init(&(hooks[i]),sizeof(HookCallback)); | |
16 | array_setlim1(&(hooks[i]),2); | |
17 | array_setlim2(&(hooks[i]),2); | |
18 | } | |
19 | } | |
20 | ||
21 | int registerhook(int hooknum, HookCallback callback) { | |
22 | int i; | |
23 | HookCallback *hcbs; | |
24 | ||
25 | if (hooknum>HOOKMAX) | |
26 | return 1; | |
27 | ||
28 | hcbs=(HookCallback *)(hooks[hooknum].content); | |
29 | for(i=0;i<hooks[hooknum].cursi;i++) | |
30 | if(hcbs[i]==callback) | |
31 | return 1; | |
32 | ||
33 | i=array_getfreeslot(&hooks[hooknum]); | |
34 | hcbs=(HookCallback *)(hooks[hooknum].content); | |
35 | hcbs[i]=callback; | |
36 | ||
37 | return 0; | |
38 | } | |
39 | ||
40 | int deregisterhook(int hooknum, HookCallback callback) { | |
41 | int i; | |
42 | HookCallback *hcbs; | |
43 | ||
44 | if (hooknum>HOOKMAX) | |
45 | return 1; | |
46 | ||
47 | hcbs=(HookCallback *)(hooks[hooknum].content); | |
48 | ||
49 | for(i=0;i<hooks[hooknum].cursi;i++) | |
50 | if(hcbs[i]==callback) { | |
51 | array_delslot(&(hooks[hooknum]),i); | |
52 | return 0; | |
53 | } | |
54 | ||
55 | return 1; | |
56 | } | |
57 | ||
58 | void triggerhook(int hooknum, void *arg) { | |
59 | int i; | |
60 | HookCallback *hcbs; | |
61 | ||
62 | if (hooknum>HOOKMAX) | |
63 | return; | |
64 | ||
526e7c1d | 65 | hookqueuelength++; |
2c5db955 CP |
66 | hcbs=(HookCallback *)(hooks[hooknum].content); |
67 | for (i=0;i<hooks[hooknum].cursi;i++) { | |
68 | (hcbs[i])(hooknum, arg); | |
69 | } | |
526e7c1d P |
70 | hookqueuelength--; |
71 | ||
72 | if (!hookqueuelength && hooknum!=HOOK_CORE_ENDOFHOOKSQUEUE) | |
73 | triggerhook(HOOK_CORE_ENDOFHOOKSQUEUE, 0); | |
2c5db955 CP |
74 | } |
75 |