C++ sk_free函数代码示例

struct sock *sk_clone(const struct sock *sk, const gfp_t priority)
{
	struct sock *newsk = sk_alloc(sk->sk_family, priority, sk->sk_prot, 0);

	if (newsk != NULL) {
		struct sk_filter *filter;

		sock_copy(newsk, sk);

		/* SANITY */
		sk_node_init(&newsk->sk_node);
		sock_lock_init(newsk);
		bh_lock_sock(newsk);
		newsk->sk_backlog.head	= newsk->sk_backlog.tail = NULL;

		atomic_set(&newsk->sk_rmem_alloc, 0);
		atomic_set(&newsk->sk_wmem_alloc, 0);
		atomic_set(&newsk->sk_omem_alloc, 0);
		skb_queue_head_init(&newsk->sk_receive_queue);
		skb_queue_head_init(&newsk->sk_write_queue);
#ifdef CONFIG_NET_DMA
		skb_queue_head_init(&newsk->sk_async_wait_queue);
#endif

		rwlock_init(&newsk->sk_dst_lock);
		rwlock_init(&newsk->sk_callback_lock);
		lockdep_set_class(&newsk->sk_callback_lock,
				   af_callback_keys + newsk->sk_family);

		newsk->sk_dst_cache	= NULL;
		newsk->sk_wmem_queued	= 0;
		newsk->sk_forward_alloc = 0;
		newsk->sk_send_head	= NULL;
		newsk->sk_userlocks	= sk->sk_userlocks & ~SOCK_BINDPORT_LOCK;

		sock_reset_flag(newsk, SOCK_DONE);
		skb_queue_head_init(&newsk->sk_error_queue);

		filter = newsk->sk_filter;
		if (filter != NULL)
			sk_filter_charge(newsk, filter);

		if (unlikely(xfrm_sk_clone_policy(newsk))) {
			/* It is still raw copy of parent, so invalidate
			 * destructor and make plain sk_free() */
			newsk->sk_destruct = NULL;
			sk_free(newsk);
			newsk = NULL;
			goto out;
		}

		newsk->sk_err	   = 0;
		newsk->sk_priority = 0;
		atomic_set(&newsk->sk_refcnt, 2);

		/*
		 * Increment the counter in the same struct proto as the master
		 * sock (sk_refcnt_debug_inc uses newsk->sk_prot->socks, that
		 * is the same as sk->sk_prot->socks, as this field was copied
		 * with memcpy).
		 *
		 * This _changes_ the previous behaviour, where
		 * tcp_create_openreq_child always was incrementing the
		 * equivalent to tcp_prot->socks (inet_sock_nr), so this have
		 * to be taken into account in all callers. -acme
		 */
		sk_refcnt_debug_inc(newsk);
		newsk->sk_socket = NULL;
		newsk->sk_sleep	 = NULL;

		if (newsk->sk_prot->sockets_allocated)
			atomic_inc(newsk->sk_prot->sockets_allocated);
	}
out:
	return newsk;
}

 ~ImageGM() override {
     sk_free(fBuffer);
 }

static int tipc_create(struct net *net, struct socket *sock, int protocol)
{
	const struct proto_ops *ops;
	socket_state state;
	struct sock *sk;
	struct tipc_port *tp_ptr;

	/* Validate arguments */

	if (net != &init_net)
		return -EAFNOSUPPORT;

	if (unlikely(protocol != 0))
		return -EPROTONOSUPPORT;

	switch (sock->type) {
	case SOCK_STREAM:
		ops = &stream_ops;
		state = SS_UNCONNECTED;
		break;
	case SOCK_SEQPACKET:
		ops = &packet_ops;
		state = SS_UNCONNECTED;
		break;
	case SOCK_DGRAM:
	case SOCK_RDM:
		ops = &msg_ops;
		state = SS_READY;
		break;
	default:
		return -EPROTOTYPE;
	}

	/* Allocate socket's protocol area */

	sk = sk_alloc(net, AF_TIPC, GFP_KERNEL, &tipc_proto);
	if (sk == NULL)
		return -ENOMEM;

	/* Allocate TIPC port for socket to use */

	tp_ptr = tipc_createport_raw(sk, &dispatch, &wakeupdispatch,
				     TIPC_LOW_IMPORTANCE);
	if (unlikely(!tp_ptr)) {
		sk_free(sk);
		return -ENOMEM;
	}

	/* Finish initializing socket data structures */

	sock->ops = ops;
	sock->state = state;

	sock_init_data(sock, sk);
	sk->sk_rcvtimeo = msecs_to_jiffies(CONN_TIMEOUT_DEFAULT);
	sk->sk_backlog_rcv = backlog_rcv;
	tipc_sk(sk)->p = tp_ptr;

	spin_unlock_bh(tp_ptr->lock);

	if (sock->state == SS_READY) {
		tipc_set_portunreturnable(tp_ptr->ref, 1);
		if (sock->type == SOCK_DGRAM)
			tipc_set_portunreliable(tp_ptr->ref, 1);
	}

	atomic_inc(&tipc_user_count);
	return 0;
}

SkGradientShaderBase::GradientShaderCache::~GradientShaderCache() {
    sk_free(fCache16Storage);
    SkSafeUnref(fCache32PixelRef);
}

SkMallocPixelRef::~SkMallocPixelRef() {
    SkSafeUnref(fCTable);
    sk_free(fStorage);
}

static int 
kni_vhost_backend_init(struct kni_dev *kni)
{
	struct kni_vhost_queue *q;
	struct net *net = current->nsproxy->net_ns;
	int err, i, sockfd;
	struct rte_kni_fifo *fifo;
	struct sk_buff *elem;

	if (kni->vhost_queue != NULL)
		return -1;

	if (!(q = (struct kni_vhost_queue *)sk_alloc(
		      net, AF_UNSPEC, GFP_KERNEL, &kni_raw_proto)))
		return -ENOMEM;

	err = sock_create_lite(AF_UNSPEC, SOCK_RAW, IPPROTO_RAW, &q->sock);
	if (err)
		goto free_sk;

	sockfd = sock_map_fd(q->sock, 0);
	if (sockfd < 0) {
		err = sockfd;
		goto free_sock;
	}

	/* cache init */
	q->cache = (struct sk_buff*)
		kzalloc(RTE_KNI_VHOST_MAX_CACHE_SIZE * sizeof(struct sk_buff), 
			GFP_KERNEL);
	if (!q->cache)
		goto free_fd;

	fifo = (struct rte_kni_fifo*)
		kzalloc(RTE_KNI_VHOST_MAX_CACHE_SIZE * sizeof(void *)
			+ sizeof(struct rte_kni_fifo), GFP_KERNEL);
	if (!fifo)
		goto free_cache;

	kni_fifo_init(fifo, RTE_KNI_VHOST_MAX_CACHE_SIZE);

	for (i = 0; i < RTE_KNI_VHOST_MAX_CACHE_SIZE; i++) {
		elem = &q->cache[i];
		kni_fifo_put(fifo, (void**)&elem, 1);
	}
	q->fifo = fifo;
	
	/* store sockfd in vhost_queue */
	q->sockfd = sockfd;

	/* init socket */
	q->sock->type = SOCK_RAW;
	q->sock->state = SS_CONNECTED;
	q->sock->ops = &kni_socket_ops;
	sock_init_data(q->sock, &q->sk);

	/* init sock data */
	q->sk.sk_write_space = kni_sk_write_space;
	q->sk.sk_destruct = kni_sk_destruct;
	q->flags = IFF_NO_PI | IFF_TAP;
	q->vnet_hdr_sz = sizeof(struct virtio_net_hdr);
#ifdef RTE_KNI_VHOST_VNET_HDR_EN
	q->flags |= IFF_VNET_HDR;
#endif
	
	/* bind kni_dev with vhost_queue */
	q->kni = kni;
	kni->vhost_queue = q;
	
	wmb();

	kni->vq_status = BE_START;

	KNI_DBG("backend init sockfd=%d, sock->wq=0x%16llx,"
		  "sk->sk_wq=0x%16llx", 
		  q->sockfd, (uint64_t)q->sock->wq, 
		  (uint64_t)q->sk.sk_wq);

	return 0;

free_cache:
	kfree(q->cache);
	q->cache = NULL;

free_fd:
	put_unused_fd(sockfd);

free_sock:
	q->kni = NULL;
	kni->vhost_queue = NULL;
	kni->vq_status |= BE_FINISH;
	sock_release(q->sock);
	q->sock->ops = NULL;
	q->sock = NULL;

free_sk:
	sk_free((struct sock*)q);

	return err;
}

//.........这里部分代码省略.........
		goto err;
	if ((ret->qual=(int (**)(char **))OPENSSL_malloc(sizeof(int (**)(char **))*num)) == NULL)
		goto err;
	for (i=0; i<num; i++)
		{
		ret->index[i]=NULL;
		ret->qual[i]=NULL;
		}

	add=(num+1)*sizeof(char *);
	buf->data[size-1]='\0';
	offset=0;
	for (;;)
		{
		if (offset != 0)
			{
			size+=BUFSIZE;
			if (!BUF_MEM_grow_clean(buf,size)) goto err;
			}
		buf->data[offset]='\0';
		BIO_gets(in,&(buf->data[offset]),size-offset);
		ln++;
		if (buf->data[offset] == '\0') break;
		if ((offset == 0) && (buf->data[0] == '#')) continue;
		i=strlen(&(buf->data[offset]));
		offset+=i;
		if (buf->data[offset-1] != '\n')
			continue;
		else
			{
			buf->data[offset-1]='\0'; /* blat the '\n' */
			if (!(p=(char *)OPENSSL_malloc(add+offset))) goto err;
			offset=0;
			}
		pp=(char **)p;
		p+=add;
		n=0;
		pp[n++]=p;
		i=0;
		f=buf->data;

		esc=0;
		for (;;)
			{
			if (*f == '\0') break;
			if (*f == '\t')
				{
				if (esc)
					p--;
				else
					{	
					*(p++)='\0';
					f++;
					if (n >=  num) break;
					pp[n++]=p;
					continue;
					}
				}
			esc=(*f == '\\');
			*(p++)= *(f++);
			}
		*(p++)='\0';
		if ((n != num) || (*f != '\0'))
			{
#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)	/* temporaty fix :-( */
			fprintf(stderr,"wrong number of fields on line %ld (looking for field %d, got %d, '%s' left)\n",ln,num,n,f);
#endif
			er=2;
			goto err;
			}
		pp[n]=p;
		if (!sk_push(ret->data,(char *)pp))
			{
#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)	/* temporaty fix :-( */
			fprintf(stderr,"failure in sk_push\n");
#endif
			er=2;
			goto err;
			}
		}
	er=0;
err:
	BUF_MEM_free(buf);
	if (er)
		{
#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)
		if (er == 1) fprintf(stderr,"OPENSSL_malloc failure\n");
#endif
		if (ret != NULL)
			{
			if (ret->data != NULL) sk_free(ret->data);
			if (ret->index != NULL) OPENSSL_free(ret->index);
			if (ret->qual != NULL) OPENSSL_free(ret->qual);
			if (ret != NULL) OPENSSL_free(ret);
			}
		return(NULL);
		}
	else
		return(ret);
	}

SkMeshIndices::~SkMeshIndices() {
    sk_free(fStorage);
}

SkBufferStream::~SkBufferStream()
{
    fProxy->unref();
    if (fWeOwnTheBuffer)
        sk_free(fBuffer);
}

static void malloc_freeproc(void* context) {
    sk_free(context);
}

SkRgnBuilder::~SkRgnBuilder() {
    sk_free(fStorage);
}

struct sock *__vsock_create(struct net *net,
			    struct socket *sock,
			    struct sock *parent,
			    gfp_t priority,
			    unsigned short type,
			    int kern)
{
	struct sock *sk;
	struct vsock_sock *psk;
	struct vsock_sock *vsk;

	sk = sk_alloc(net, AF_VSOCK, priority, &vsock_proto, kern);
	if (!sk)
		return NULL;

	sock_init_data(sock, sk);

	/* sk->sk_type is normally set in sock_init_data, but only if sock is
	 * non-NULL. We make sure that our sockets always have a type by
	 * setting it here if needed.
	 */
	if (!sock)
		sk->sk_type = type;

	vsk = vsock_sk(sk);
	vsock_addr_init(&vsk->local_addr, VMADDR_CID_ANY, VMADDR_PORT_ANY);
	vsock_addr_init(&vsk->remote_addr, VMADDR_CID_ANY, VMADDR_PORT_ANY);

	sk->sk_destruct = vsock_sk_destruct;
	sk->sk_backlog_rcv = vsock_queue_rcv_skb;
	sk->sk_state = 0;
	sock_reset_flag(sk, SOCK_DONE);

	INIT_LIST_HEAD(&vsk->bound_table);
	INIT_LIST_HEAD(&vsk->connected_table);
	vsk->listener = NULL;
	INIT_LIST_HEAD(&vsk->pending_links);
	INIT_LIST_HEAD(&vsk->accept_queue);
	vsk->rejected = false;
	vsk->sent_request = false;
	vsk->ignore_connecting_rst = false;
	vsk->peer_shutdown = 0;

	psk = parent ? vsock_sk(parent) : NULL;
	if (parent) {
		vsk->trusted = psk->trusted;
		vsk->owner = get_cred(psk->owner);
		vsk->connect_timeout = psk->connect_timeout;
	} else {
		vsk->trusted = capable(CAP_NET_ADMIN);
		vsk->owner = get_current_cred();
		vsk->connect_timeout = VSOCK_DEFAULT_CONNECT_TIMEOUT;
	}

	if (transport->init(vsk, psk) < 0) {
		sk_free(sk);
		return NULL;
	}

	if (sock)
		vsock_insert_unbound(vsk);

	return sk;
}

//.........这里部分代码省略.........
			BIO_push(b64,in);
			tmp=in;
			in=b64;
			b64=tmp;
			}

		num=0;
		for (;;)
			{
			if (!BUF_MEM_grow(buf,(int)num+BUFSIZ)) goto end;
			i=BIO_read(in,&(buf->data[num]),BUFSIZ);
			if (i <= 0) break;
			num+=i;
			}
		}
	str=buf->data;

	/* If any structs to parse go through in sequence */

	if (sk_num(osk))
		{
		tmpbuf=(unsigned char *)str;
		tmplen=num;
		for (i=0; i<sk_num(osk); i++)
			{
			ASN1_TYPE *atmp;
			int typ;
			j=atoi(sk_value(osk,i));
			if (j == 0)
				{
				BIO_printf(bio_err,"'%s' is an invalid number\n",sk_value(osk,i));
				continue;
				}
			tmpbuf+=j;
			tmplen-=j;
			atmp = at;
			ctmpbuf = tmpbuf;
			at = d2i_ASN1_TYPE(NULL,&ctmpbuf,tmplen);
			ASN1_TYPE_free(atmp);
			if(!at)
				{
				BIO_printf(bio_err,"Error parsing structure\n");
				ERR_print_errors(bio_err);
				goto end;
				}
			typ = ASN1_TYPE_get(at);
			if ((typ == V_ASN1_OBJECT)
				|| (typ == V_ASN1_NULL))
				{
				BIO_printf(bio_err, "Can't parse %s type\n",
					typ == V_ASN1_NULL ? "NULL" : "OBJECT");
				ERR_print_errors(bio_err);
				goto end;
				}
			/* hmm... this is a little evil but it works */
			tmpbuf=at->value.asn1_string->data;
			tmplen=at->value.asn1_string->length;
			}
		str=(char *)tmpbuf;
		num=tmplen;
		}

	if (offset >= num)
		{
		BIO_printf(bio_err, "Error: offset too large\n");
		goto end;
		}

	num -= offset;

	if ((length == 0) || ((long)length > num)) length=(unsigned int)num;
	if(derout) {
		if(BIO_write(derout, str + offset, length) != (int)length) {
			BIO_printf(bio_err, "Error writing output\n");
			ERR_print_errors(bio_err);
			goto end;
		}
	}
	if (!noout &&
	    !ASN1_parse_dump(out,(unsigned char *)&(str[offset]),length,
		    indent,dump))
		{
		ERR_print_errors(bio_err);
		goto end;
		}
	ret=0;
end:
	BIO_free(derout);
	if (in != NULL) BIO_free(in);
	if (out != NULL) BIO_free_all(out);
	if (b64 != NULL) BIO_free(b64);
	if (ret != 0)
		ERR_print_errors(bio_err);
	if (buf != NULL) BUF_MEM_free(buf);
	if (at != NULL) ASN1_TYPE_free(at);
	if (osk != NULL) sk_free(osk);
	OBJ_cleanup();
	apps_shutdown();
	OPENSSL_EXIT(ret);
	}

/** We explicitly use this allocator for SkBimap pixels, so that we can
    freely assign memory allocated by one class to the other.
*/
void SkMask::FreeImage(void* image) {
    sk_free(image);
}

static void malloc_release_proc(void* info, const void* data, size_t size) {
    sk_free(info);
}