228 lines
9.3 KiB
C
228 lines
9.3 KiB
C
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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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/*
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* This file is private to libuv. It provides common functionality to both
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* Windows and Unix backends.
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*/
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#ifndef UV_COMMON_H_
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#define UV_COMMON_H_
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#include <assert.h>
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#include <stdarg.h>
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#include <stddef.h>
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#if defined(_MSC_VER) && _MSC_VER < 1600
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# include "stdint-msvc2008.h"
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#else
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# include <stdint.h>
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#endif
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#include "uv.h"
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#include "tree.h"
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#include "queue.h"
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#if !defined(snprintf) && defined(_MSC_VER) && _MSC_VER < 1900
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extern int snprintf(char*, size_t, const char*, ...);
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#endif
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
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#define container_of(ptr, type, member) \
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((type *) ((char *) (ptr) - offsetof(type, member)))
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#define STATIC_ASSERT(expr) \
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void uv__static_assert(int static_assert_failed[1 - 2 * !(expr)])
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#ifndef _WIN32
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enum {
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UV__HANDLE_INTERNAL = 0x8000,
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UV__HANDLE_ACTIVE = 0x4000,
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UV__HANDLE_REF = 0x2000,
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UV__HANDLE_CLOSING = 0 /* no-op on unix */
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};
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#else
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# define UV__HANDLE_INTERNAL 0x80
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# define UV__HANDLE_ACTIVE 0x40
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# define UV__HANDLE_REF 0x20
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# define UV__HANDLE_CLOSING 0x01
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#endif
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int uv__loop_configure(uv_loop_t* loop, uv_loop_option option, va_list ap);
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void uv__loop_close(uv_loop_t* loop);
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int uv__tcp_bind(uv_tcp_t* tcp,
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const struct sockaddr* addr,
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unsigned int addrlen,
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unsigned int flags);
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int uv__tcp_connect(uv_connect_t* req,
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uv_tcp_t* handle,
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const struct sockaddr* addr,
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unsigned int addrlen,
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uv_connect_cb cb);
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int uv__udp_bind(uv_udp_t* handle,
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const struct sockaddr* addr,
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unsigned int addrlen,
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unsigned int flags);
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int uv__udp_send(uv_udp_send_t* req,
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uv_udp_t* handle,
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const uv_buf_t bufs[],
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unsigned int nbufs,
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const struct sockaddr* addr,
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unsigned int addrlen,
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uv_udp_send_cb send_cb);
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int uv__udp_try_send(uv_udp_t* handle,
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const uv_buf_t bufs[],
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unsigned int nbufs,
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const struct sockaddr* addr,
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unsigned int addrlen);
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int uv__udp_recv_start(uv_udp_t* handle, uv_alloc_cb alloccb,
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uv_udp_recv_cb recv_cb);
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int uv__udp_recv_stop(uv_udp_t* handle);
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void uv__fs_poll_close(uv_fs_poll_t* handle);
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int uv__getaddrinfo_translate_error(int sys_err); /* EAI_* error. */
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void uv__work_submit(uv_loop_t* loop,
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struct uv__work *w,
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void (*work)(struct uv__work *w),
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void (*done)(struct uv__work *w, int status));
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void uv__work_done(uv_async_t* handle);
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size_t uv__count_bufs(const uv_buf_t bufs[], unsigned int nbufs);
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int uv__socket_sockopt(uv_handle_t* handle, int optname, int* value);
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void uv__fs_scandir_cleanup(uv_fs_t* req);
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#define uv__has_active_reqs(loop) \
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(QUEUE_EMPTY(&(loop)->active_reqs) == 0)
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#define uv__req_register(loop, req) \
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do { \
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QUEUE_INSERT_TAIL(&(loop)->active_reqs, &(req)->active_queue); \
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} \
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while (0)
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#define uv__req_unregister(loop, req) \
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do { \
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assert(uv__has_active_reqs(loop)); \
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QUEUE_REMOVE(&(req)->active_queue); \
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} \
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while (0)
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#define uv__has_active_handles(loop) \
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((loop)->active_handles > 0)
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#define uv__active_handle_add(h) \
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do { \
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(h)->loop->active_handles++; \
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} \
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while (0)
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#define uv__active_handle_rm(h) \
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do { \
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(h)->loop->active_handles--; \
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} \
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while (0)
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#define uv__is_active(h) \
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(((h)->flags & UV__HANDLE_ACTIVE) != 0)
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#define uv__is_closing(h) \
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(((h)->flags & (UV_CLOSING | UV_CLOSED)) != 0)
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#define uv__handle_start(h) \
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do { \
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assert(((h)->flags & UV__HANDLE_CLOSING) == 0); \
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if (((h)->flags & UV__HANDLE_ACTIVE) != 0) break; \
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(h)->flags |= UV__HANDLE_ACTIVE; \
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if (((h)->flags & UV__HANDLE_REF) != 0) uv__active_handle_add(h); \
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} \
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while (0)
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#define uv__handle_stop(h) \
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do { \
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assert(((h)->flags & UV__HANDLE_CLOSING) == 0); \
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if (((h)->flags & UV__HANDLE_ACTIVE) == 0) break; \
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(h)->flags &= ~UV__HANDLE_ACTIVE; \
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if (((h)->flags & UV__HANDLE_REF) != 0) uv__active_handle_rm(h); \
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} \
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while (0)
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#define uv__handle_ref(h) \
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do { \
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if (((h)->flags & UV__HANDLE_REF) != 0) break; \
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(h)->flags |= UV__HANDLE_REF; \
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if (((h)->flags & UV__HANDLE_CLOSING) != 0) break; \
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if (((h)->flags & UV__HANDLE_ACTIVE) != 0) uv__active_handle_add(h); \
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} \
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while (0)
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#define uv__handle_unref(h) \
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do { \
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if (((h)->flags & UV__HANDLE_REF) == 0) break; \
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(h)->flags &= ~UV__HANDLE_REF; \
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if (((h)->flags & UV__HANDLE_CLOSING) != 0) break; \
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if (((h)->flags & UV__HANDLE_ACTIVE) != 0) uv__active_handle_rm(h); \
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} \
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while (0)
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#define uv__has_ref(h) \
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(((h)->flags & UV__HANDLE_REF) != 0)
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#if defined(_WIN32)
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# define uv__handle_platform_init(h) ((h)->u.fd = -1)
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#else
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# define uv__handle_platform_init(h) ((h)->next_closing = NULL)
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#endif
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#define uv__handle_init(loop_, h, type_) \
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do { \
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(h)->loop = (loop_); \
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(h)->type = (type_); \
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(h)->flags = UV__HANDLE_REF; /* Ref the loop when active. */ \
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QUEUE_INSERT_TAIL(&(loop_)->handle_queue, &(h)->handle_queue); \
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uv__handle_platform_init(h); \
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} \
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while (0)
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/* Allocator prototypes */
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void *uv__calloc(size_t count, size_t size);
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char *uv__strdup(const char* s);
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char *uv__strndup(const char* s, size_t n);
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void* uv__malloc(size_t size);
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void uv__free(void* ptr);
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void* uv__realloc(void* ptr, size_t size);
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#endif /* UV_COMMON_H_ */
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