forked from osmocom/wireshark
105 lines
2.4 KiB
C
105 lines
2.4 KiB
C
/* wmem_user_cb.c
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* Wireshark Memory Manager User Callbacks
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* Copyright 2012, Evan Huus <eapache@gmail.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "wmem_core.h"
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#include "wmem_allocator.h"
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#include "wmem_user_cb.h"
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#include "wmem_user_cb_int.h"
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typedef struct _wmem_user_cb_container_t {
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wmem_user_cb_t cb;
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void *user_data;
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struct _wmem_user_cb_container_t *next;
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guint id;
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} wmem_user_cb_container_t;
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void
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wmem_call_callbacks(wmem_allocator_t *allocator, wmem_cb_event_t event)
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{
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wmem_user_cb_container_t **prev, *cur;
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gboolean again;
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prev = &(allocator->callbacks);
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cur = allocator->callbacks;
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while (cur) {
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/* call it */
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again = cur->cb(allocator, event, cur->user_data);
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/* if the callback requested deregistration, or this is being triggered
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* by the final destruction of the allocator, remove the callback */
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if (! again || event == WMEM_CB_DESTROY_EVENT) {
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*prev = cur->next;
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wmem_free(NULL, cur);
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cur = *prev;
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}
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else {
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prev = &(cur->next);
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cur = cur->next;
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}
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}
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}
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guint
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wmem_register_callback(wmem_allocator_t *allocator,
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wmem_user_cb_t callback, void *user_data)
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{
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wmem_user_cb_container_t *container;
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static guint next_id = 1;
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container = wmem_new(NULL, wmem_user_cb_container_t);
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container->cb = callback;
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container->user_data = user_data;
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container->next = allocator->callbacks;
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container->id = next_id++;
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allocator->callbacks = container;
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return container->id;
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}
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void
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wmem_unregister_callback(wmem_allocator_t *allocator, guint id)
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{
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wmem_user_cb_container_t **prev, *cur;
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prev = &(allocator->callbacks);
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cur = allocator->callbacks;
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while (cur) {
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if (cur->id == id) {
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*prev = cur->next;
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wmem_free(NULL, cur);
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return;
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}
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prev = &(cur->next);
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cur = cur->next;
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}
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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