| 1 | #include <lttv/hook.h> |
| 2 | |
| 3 | |
| 4 | typedef struct _lttv_hook_closure { |
| 5 | lttv_hook hook; |
| 6 | void *hook_data; |
| 7 | } lttv_hook_closure; |
| 8 | |
| 9 | |
| 10 | inline lttv_hooks *lttv_hooks_new() { |
| 11 | return g_array_new(FALSE, FALSE, sizeof(lttv_hook_closure)); |
| 12 | } |
| 13 | |
| 14 | /* MD: delete elements of the array also, but don't free pointed addresses |
| 15 | * (functions). |
| 16 | */ |
| 17 | inline void lttv_hooks_destroy(lttv_hooks *h) { |
| 18 | g_array_free(h, TRUE); |
| 19 | } |
| 20 | |
| 21 | inline void lttv_hooks_add(lttv_hooks *h, lttv_hook f, void *hook_data) { |
| 22 | lttv_hook_closure c; |
| 23 | |
| 24 | /* if h is null, do nothing, or popup a warning message */ |
| 25 | if(h == NULL)return; |
| 26 | |
| 27 | c.hook = f; |
| 28 | c.hook_data = hook_data; |
| 29 | g_array_append_val(h,c); |
| 30 | } |
| 31 | |
| 32 | |
| 33 | void lttv_hooks_call(lttv_hooks *h, void *call_data) |
| 34 | { |
| 35 | int i; |
| 36 | lttv_hook_closure * c; |
| 37 | |
| 38 | for(i = 0 ; i < h->len ; i++) { |
| 39 | c = ((lttv_hook_closure *)h->data) + i; |
| 40 | if(c != NULL) |
| 41 | c->hook(c->hook_data,call_data); |
| 42 | else |
| 43 | g_critical("NULL hook called\n"); |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | |
| 48 | /* Sometimes different hooks need to be called based on the case. The |
| 49 | case is represented by an unsigned integer id and may represent different |
| 50 | event types, for instance. */ |
| 51 | |
| 52 | inline lttv_hooks_by_id *lttv_hooks_by_id_new() { |
| 53 | return g_ptr_array_new(); |
| 54 | } |
| 55 | |
| 56 | |
| 57 | inline void lttv_hooks_by_id_destroy(lttv_hooks_by_id *h) { |
| 58 | /* MD: delete elements of the array also */ |
| 59 | g_ptr_array_free(h, TRUE); |
| 60 | } |
| 61 | |
| 62 | |
| 63 | void lttv_hooks_by_id_add(lttv_hooks_by_id *h, lttv_hook f, void *hook_data, |
| 64 | unsigned int id) |
| 65 | { |
| 66 | if(h->len < id) g_ptr_array_set_size(h, id); |
| 67 | if(h->pdata[id] == NULL) h->pdata[id] = lttv_hooks_new(); |
| 68 | lttv_hooks_add(h->pdata[id], f, hook_data); |
| 69 | } |
| 70 | |
| 71 | void lttv_hooks_by_id_call(lttv_hooks_by_id *h, void *call_data, unsigned int id) |
| 72 | { |
| 73 | if(h->len <= id || h->pdata[id] == NULL) return; |
| 74 | lttv_hooks_call(h->pdata[id],call_data); |
| 75 | } |
| 76 | |