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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 <stdarg.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"
+
+#if !defined(snprintf) && defined(_MSC_VER) && _MSC_VER < 1900
+extern int snprintf(char*, size_t, const char*, ...);
+#endif
+
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+
+#define container_of(ptr, type, member) \
+ ((type *) ((char *) (ptr) - offsetof(type, member)))
+
+#define STATIC_ASSERT(expr) \
+ void uv__static_assert(int static_assert_failed[1 - 2 * !(expr)])
+
+#ifndef _WIN32
+enum {
+ UV__SIGNAL_ONE_SHOT = 0x80000, /* On signal reception remove sighandler */
+ UV__HANDLE_INTERNAL = 0x8000,
+ UV__HANDLE_ACTIVE = 0x4000,
+ UV__HANDLE_REF = 0x2000,
+ UV__HANDLE_CLOSING = 0 /* no-op on unix */
+};
+#else
+# define UV__SIGNAL_ONE_SHOT_DISPATCHED 0x200
+# define UV__SIGNAL_ONE_SHOT 0x100
+# define UV__HANDLE_INTERNAL 0x80
+# define UV__HANDLE_ACTIVE 0x40
+# define UV__HANDLE_REF 0x20
+# define UV__HANDLE_CLOSING 0x01
+#endif
+
+int uv__loop_configure(uv_loop_t* loop, uv_loop_option option, va_list ap);
+
+void uv__loop_close(uv_loop_t* loop);
+
+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_try_send(uv_udp_t* handle,
+ const uv_buf_t bufs[],
+ unsigned int nbufs,
+ const struct sockaddr* addr,
+ unsigned int addrlen);
+
+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. */
+
+void uv__work_submit(uv_loop_t* loop,
+ struct uv__work *w,
+ void (*work)(struct uv__work *w),
+ void (*done)(struct uv__work *w, int status));
+
+void uv__work_done(uv_async_t* handle);
+
+size_t uv__count_bufs(const uv_buf_t bufs[], unsigned int nbufs);
+
+int uv__socket_sockopt(uv_handle_t* handle, int optname, int* value);
+
+void uv__fs_scandir_cleanup(uv_fs_t* req);
+
+#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) ((h)->u.fd = -1)
+#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)
+
+/* Note: uses an open-coded version of SET_REQ_SUCCESS() because of
+ * a circular dependency between src/uv-common.h and src/win/internal.h.
+ */
+#if defined(_WIN32)
+# define UV_REQ_INIT(req, typ) \
+ do { \
+ (req)->type = (typ); \
+ (req)->u.io.overlapped.Internal = 0; /* SET_REQ_SUCCESS() */ \
+ } \
+ while (0)
+#else
+# define UV_REQ_INIT(req, typ) \
+ do { \
+ (req)->type = (typ); \
+ } \
+ while (0)
+#endif
+
+#define uv__req_init(loop, req, typ) \
+ do { \
+ UV_REQ_INIT(req, typ); \
+ uv__req_register(loop, req); \
+ } \
+ while (0)
+
+/* Allocator prototypes */
+void *uv__calloc(size_t count, size_t size);
+char *uv__strdup(const char* s);
+char *uv__strndup(const char* s, size_t n);
+void* uv__malloc(size_t size);
+void uv__free(void* ptr);
+void* uv__realloc(void* ptr, size_t size);
+
+#endif /* UV_COMMON_H_ */