norohind/kmscon
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misc: add kmscon_hook_num() helper

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This helper returns the number of registered callbacks for an hook.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
This commit is contained in:
David Herrmann 2012-04-15 14:57:17 +02:00
parent f307f145a8
commit 3a480dc910
2 changed files with 12 additions and 0 deletions
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11
src/misc.c
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@ -176,6 +176,7 @@ struct hook_entry {
};
struct kmscon_hook {
unsigned int num;
struct hook_entry *entries;
struct hook_entry *cur_entry;
};
@ -211,6 +212,14 @@ void kmscon_hook_free(struct kmscon_hook *hook)
free(hook);
}
unsigned int kmscon_hook_num(struct kmscon_hook *hook)
{
if (!hook)
return 0;
return hook->num;
}
int kmscon_hook_add(struct kmscon_hook *hook, kmscon_hook_cb cb, void *data)
{
struct hook_entry *entry;
@ -227,6 +236,7 @@ int kmscon_hook_add(struct kmscon_hook *hook, kmscon_hook_cb cb, void *data)
entry->next = hook->entries;
hook->entries = entry;
hook->num++;
return 0;
}
@ -254,6 +264,7 @@ void kmscon_hook_rm(struct kmscon_hook *hook, kmscon_hook_cb cb, void *data)
if (hook->cur_entry == tmp)
hook->cur_entry = tmp->next;
free(tmp);
hook->num--;
}
}

1
src/misc.h
View File

@ -54,6 +54,7 @@ typedef void (*kmscon_hook_cb) (void *parent, void *arg, void *data);
int kmscon_hook_new(struct kmscon_hook **out);
void kmscon_hook_free(struct kmscon_hook *hook);
unsigned int kmscon_hook_num(struct kmscon_hook *hook);
int kmscon_hook_add(struct kmscon_hook *hook, kmscon_hook_cb cb, void *data);
void kmscon_hook_rm(struct kmscon_hook *hook, kmscon_hook_cb cb, void *data);
void kmscon_hook_call(struct kmscon_hook *hook, void *parent, void *arg);