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uv-common.h
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uv-common.h
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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
/*
* This file is private to libuv. It provides common functionality to both
* Windows and Unix backends.
*/
#ifndef UV_COMMON_H_
#define UV_COMMON_H_
#include <assert.h>
#include <stddef.h>
#if defined(_MSC_VER) && _MSC_VER < 1600
# include "stdint-msvc2008.h"
#else
# include <stdint.h>
#endif
#include "uv.h"
#include "tree.h"
#include "queue.h"
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
#define container_of(ptr, type, member) \
((type *) ((char *) (ptr) - offsetof(type, member)))
#ifndef _WIN32
enum {
UV__HANDLE_INTERNAL = 0x8000,
UV__HANDLE_ACTIVE = 0x4000,
UV__HANDLE_REF = 0x2000,
UV__HANDLE_CLOSING = 0 /* no-op on unix */
};
#else
# define UV__HANDLE_INTERNAL 0x80
# define UV__HANDLE_ACTIVE 0x40
# define UV__HANDLE_REF 0x20
# define UV__HANDLE_CLOSING 0x01
#endif
int uv__tcp_bind(uv_tcp_t* tcp,
const struct sockaddr* addr,
unsigned int addrlen,
unsigned int flags);
int uv__tcp_connect(uv_connect_t* req,
uv_tcp_t* handle,
const struct sockaddr* addr,
unsigned int addrlen,
uv_connect_cb cb);
int uv__udp_bind(uv_udp_t* handle,
const struct sockaddr* addr,
unsigned int addrlen,
unsigned int flags);
int uv__udp_send(uv_udp_send_t* req,
uv_udp_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs,
const struct sockaddr* addr,
unsigned int addrlen,
uv_udp_send_cb send_cb);
int uv__udp_recv_start(uv_udp_t* handle, uv_alloc_cb alloccb,
uv_udp_recv_cb recv_cb);
int uv__udp_recv_stop(uv_udp_t* handle);
void uv__fs_poll_close(uv_fs_poll_t* handle);
int uv__getaddrinfo_translate_error(int sys_err); /* EAI_* error. */
#define uv__has_active_reqs(loop) \
(QUEUE_EMPTY(&(loop)->active_reqs) == 0)
#define uv__req_register(loop, req) \
do { \
QUEUE_INSERT_TAIL(&(loop)->active_reqs, &(req)->active_queue); \
} \
while (0)
#define uv__req_unregister(loop, req) \
do { \
assert(uv__has_active_reqs(loop)); \
QUEUE_REMOVE(&(req)->active_queue); \
} \
while (0)
#define uv__has_active_handles(loop) \
((loop)->active_handles > 0)
#define uv__active_handle_add(h) \
do { \
(h)->loop->active_handles++; \
} \
while (0)
#define uv__active_handle_rm(h) \
do { \
(h)->loop->active_handles--; \
} \
while (0)
#define uv__is_active(h) \
(((h)->flags & UV__HANDLE_ACTIVE) != 0)
#define uv__is_closing(h) \
(((h)->flags & (UV_CLOSING | UV_CLOSED)) != 0)
#define uv__handle_start(h) \
do { \
assert(((h)->flags & UV__HANDLE_CLOSING) == 0); \
if (((h)->flags & UV__HANDLE_ACTIVE) != 0) break; \
(h)->flags |= UV__HANDLE_ACTIVE; \
if (((h)->flags & UV__HANDLE_REF) != 0) uv__active_handle_add(h); \
} \
while (0)
#define uv__handle_stop(h) \
do { \
assert(((h)->flags & UV__HANDLE_CLOSING) == 0); \
if (((h)->flags & UV__HANDLE_ACTIVE) == 0) break; \
(h)->flags &= ~UV__HANDLE_ACTIVE; \
if (((h)->flags & UV__HANDLE_REF) != 0) uv__active_handle_rm(h); \
} \
while (0)
#define uv__handle_ref(h) \
do { \
if (((h)->flags & UV__HANDLE_REF) != 0) break; \
(h)->flags |= UV__HANDLE_REF; \
if (((h)->flags & UV__HANDLE_CLOSING) != 0) break; \
if (((h)->flags & UV__HANDLE_ACTIVE) != 0) uv__active_handle_add(h); \
} \
while (0)
#define uv__handle_unref(h) \
do { \
if (((h)->flags & UV__HANDLE_REF) == 0) break; \
(h)->flags &= ~UV__HANDLE_REF; \
if (((h)->flags & UV__HANDLE_CLOSING) != 0) break; \
if (((h)->flags & UV__HANDLE_ACTIVE) != 0) uv__active_handle_rm(h); \
} \
while (0)
#define uv__has_ref(h) \
(((h)->flags & UV__HANDLE_REF) != 0)
#if defined(_WIN32)
# define uv__handle_platform_init(h)
#else
# define uv__handle_platform_init(h) ((h)->next_closing = NULL)
#endif
#define uv__handle_init(loop_, h, type_) \
do { \
(h)->loop = (loop_); \
(h)->type = (type_); \
(h)->flags = UV__HANDLE_REF; /* Ref the loop when active. */ \
QUEUE_INSERT_TAIL(&(loop_)->handle_queue, &(h)->handle_queue); \
uv__handle_platform_init(h); \
} \
while (0)
#endif /* UV_COMMON_H_ */