qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
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notify.c (1742B)

      1 /*
      2  * Notifier lists
      3  *
      4  * Copyright IBM, Corp. 2010
      5  *
      6  * Authors:
      7  *  Anthony Liguori   <aliguori@us.ibm.com>
      8  *
      9  * This work is licensed under the terms of the GNU GPL, version 2.  See
     10  * the COPYING file in the top-level directory.
     11  *
     12  * Contributions after 2012-01-13 are licensed under the terms of the
     13  * GNU GPL, version 2 or (at your option) any later version.
     14  */
     15 
     16 #include "qemu/osdep.h"
     17 #include "qemu/notify.h"
     18 
     19 void notifier_list_init(NotifierList *list)
     20 {
     21     QLIST_INIT(&list->notifiers);
     22 }
     23 
     24 void notifier_list_add(NotifierList *list, Notifier *notifier)
     25 {
     26     QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
     27 }
     28 
     29 void notifier_remove(Notifier *notifier)
     30 {
     31     QLIST_REMOVE(notifier, node);
     32 }
     33 
     34 void notifier_list_notify(NotifierList *list, void *data)
     35 {
     36     Notifier *notifier, *next;
     37 
     38     QLIST_FOREACH_SAFE(notifier, &list->notifiers, node, next) {
     39         notifier->notify(notifier, data);
     40     }
     41 }
     42 
     43 bool notifier_list_empty(NotifierList *list)
     44 {
     45     return QLIST_EMPTY(&list->notifiers);
     46 }
     47 
     48 void notifier_with_return_list_init(NotifierWithReturnList *list)
     49 {
     50     QLIST_INIT(&list->notifiers);
     51 }
     52 
     53 void notifier_with_return_list_add(NotifierWithReturnList *list,
     54                                    NotifierWithReturn *notifier)
     55 {
     56     QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
     57 }
     58 
     59 void notifier_with_return_remove(NotifierWithReturn *notifier)
     60 {
     61     QLIST_REMOVE(notifier, node);
     62 }
     63 
     64 int notifier_with_return_list_notify(NotifierWithReturnList *list, void *data)
     65 {
     66     NotifierWithReturn *notifier, *next;
     67     int ret = 0;
     68 
     69     QLIST_FOREACH_SAFE(notifier, &list->notifiers, node, next) {
     70         ret = notifier->notify(notifier, data);
     71         if (ret != 0) {
     72             break;
     73         }
     74     }
     75     return ret;
     76 }