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uv.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.
*/
/* See https://github.com/libuv/libuv#documentation for documentation. */
#ifndef UV_H
#define UV_H
#ifdef __cplusplus
extern "C" {
#endif
#if defined(BUILDING_UV_SHARED) && defined(USING_UV_SHARED)
#error "Define either BUILDING_UV_SHARED or USING_UV_SHARED, not both."
#endif
#ifdef _WIN32
/* Windows - set up dll import/export decorators. */
# if defined(BUILDING_UV_SHARED)
/* Building shared library. */
# define UV_EXTERN __declspec(dllexport)
# elif defined(USING_UV_SHARED)
/* Using shared library. */
# define UV_EXTERN __declspec(dllimport)
# else
/* Building static library. */
# define UV_EXTERN /* nothing */
# endif
#elif __GNUC__ >= 4
# define UV_EXTERN __attribute__((visibility("default")))
#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550) /* Sun Studio >= 8 */
# define UV_EXTERN __global
#else
# define UV_EXTERN /* nothing */
#endif
#include "uv/errno.h"
#include "uv/version.h"
#include <stddef.h>
#include <stdio.h>
#if defined(_MSC_VER) && _MSC_VER < 1600
# include "uv/stdint-msvc2008.h"
#else
# include <stdint.h>
#endif
#if defined(_WIN32)
# include "uv/win.h"
#else
# include "uv/unix.h"
#endif
/* Expand this list if necessary. */
#define UV_ERRNO_MAP(XX) \
XX(E2BIG, "argument list too long") \
XX(EACCES, "permission denied") \
XX(EADDRINUSE, "address already in use") \
XX(EADDRNOTAVAIL, "address not available") \
XX(EAFNOSUPPORT, "address family not supported") \
XX(EAGAIN, "resource temporarily unavailable") \
XX(EAI_ADDRFAMILY, "address family not supported") \
XX(EAI_AGAIN, "temporary failure") \
XX(EAI_BADFLAGS, "bad ai_flags value") \
XX(EAI_BADHINTS, "invalid value for hints") \
XX(EAI_CANCELED, "request canceled") \
XX(EAI_FAIL, "permanent failure") \
XX(EAI_FAMILY, "ai_family not supported") \
XX(EAI_MEMORY, "out of memory") \
XX(EAI_NODATA, "no address") \
XX(EAI_NONAME, "unknown node or service") \
XX(EAI_OVERFLOW, "argument buffer overflow") \
XX(EAI_PROTOCOL, "resolved protocol is unknown") \
XX(EAI_SERVICE, "service not available for socket type") \
XX(EAI_SOCKTYPE, "socket type not supported") \
XX(EALREADY, "connection already in progress") \
XX(EBADF, "bad file descriptor") \
XX(EBUSY, "resource busy or locked") \
XX(ECANCELED, "operation canceled") \
XX(ECHARSET, "invalid Unicode character") \
XX(ECONNABORTED, "software caused connection abort") \
XX(ECONNREFUSED, "connection refused") \
XX(ECONNRESET, "connection reset by peer") \
XX(EDESTADDRREQ, "destination address required") \
XX(EEXIST, "file already exists") \
XX(EFAULT, "bad address in system call argument") \
XX(EFBIG, "file too large") \
XX(EHOSTUNREACH, "host is unreachable") \
XX(EINTR, "interrupted system call") \
XX(EINVAL, "invalid argument") \
XX(EIO, "i/o error") \
XX(EISCONN, "socket is already connected") \
XX(EISDIR, "illegal operation on a directory") \
XX(ELOOP, "too many symbolic links encountered") \
XX(EMFILE, "too many open files") \
XX(EMSGSIZE, "message too long") \
XX(ENAMETOOLONG, "name too long") \
XX(ENETDOWN, "network is down") \
XX(ENETUNREACH, "network is unreachable") \
XX(ENFILE, "file table overflow") \
XX(ENOBUFS, "no buffer space available") \
XX(ENODEV, "no such device") \
XX(ENOENT, "no such file or directory") \
XX(ENOMEM, "not enough memory") \
XX(ENONET, "machine is not on the network") \
XX(ENOPROTOOPT, "protocol not available") \
XX(ENOSPC, "no space left on device") \
XX(ENOSYS, "function not implemented") \
XX(ENOTCONN, "socket is not connected") \
XX(ENOTDIR, "not a directory") \
XX(ENOTEMPTY, "directory not empty") \
XX(ENOTSOCK, "socket operation on non-socket") \
XX(ENOTSUP, "operation not supported on socket") \
XX(EOVERFLOW, "value too large for defined data type") \
XX(EPERM, "operation not permitted") \
XX(EPIPE, "broken pipe") \
XX(EPROTO, "protocol error") \
XX(EPROTONOSUPPORT, "protocol not supported") \
XX(EPROTOTYPE, "protocol wrong type for socket") \
XX(ERANGE, "result too large") \
XX(EROFS, "read-only file system") \
XX(ESHUTDOWN, "cannot send after transport endpoint shutdown") \
XX(ESPIPE, "invalid seek") \
XX(ESRCH, "no such process") \
XX(ETIMEDOUT, "connection timed out") \
XX(ETXTBSY, "text file is busy") \
XX(EXDEV, "cross-device link not permitted") \
XX(UNKNOWN, "unknown error") \
XX(EOF, "end of file") \
XX(ENXIO, "no such device or address") \
XX(EMLINK, "too many links") \
XX(EHOSTDOWN, "host is down") \
XX(EREMOTEIO, "remote I/O error") \
XX(ENOTTY, "inappropriate ioctl for device") \
XX(EFTYPE, "inappropriate file type or format") \
XX(EILSEQ, "illegal byte sequence") \
XX(ESOCKTNOSUPPORT, "socket type not supported") \
#define UV_HANDLE_TYPE_MAP(XX) \
XX(ASYNC, async) \
XX(CHECK, check) \
XX(FS_EVENT, fs_event) \
XX(FS_POLL, fs_poll) \
XX(HANDLE, handle) \
XX(IDLE, idle) \
XX(NAMED_PIPE, pipe) \
XX(POLL, poll) \
XX(PREPARE, prepare) \
XX(PROCESS, process) \
XX(STREAM, stream) \
XX(TCP, tcp) \
XX(TIMER, timer) \
XX(TTY, tty) \
XX(UDP, udp) \
XX(SIGNAL, signal) \
#define UV_REQ_TYPE_MAP(XX) \
XX(REQ, req) \
XX(CONNECT, connect) \
XX(WRITE, write) \
XX(SHUTDOWN, shutdown) \
XX(UDP_SEND, udp_send) \
XX(FS, fs) \
XX(WORK, work) \
XX(GETADDRINFO, getaddrinfo) \
XX(GETNAMEINFO, getnameinfo) \
XX(RANDOM, random) \
typedef enum {
#define XX(code, _) UV_ ## code = UV__ ## code,
UV_ERRNO_MAP(XX)
#undef XX
UV_ERRNO_MAX = UV__EOF - 1
} uv_errno_t;
typedef enum {
UV_UNKNOWN_HANDLE = 0,
#define XX(uc, lc) UV_##uc,
UV_HANDLE_TYPE_MAP(XX)
#undef XX
UV_FILE,
UV_HANDLE_TYPE_MAX
} uv_handle_type;
typedef enum {
UV_UNKNOWN_REQ = 0,
#define XX(uc, lc) UV_##uc,
UV_REQ_TYPE_MAP(XX)
#undef XX
UV_REQ_TYPE_PRIVATE
UV_REQ_TYPE_MAX
} uv_req_type;
/* Handle types. */
typedef struct uv_loop_s uv_loop_t;
typedef struct uv_handle_s uv_handle_t;
typedef struct uv_dir_s uv_dir_t;
typedef struct uv_stream_s uv_stream_t;
typedef struct uv_tcp_s uv_tcp_t;
typedef struct uv_udp_s uv_udp_t;
typedef struct uv_pipe_s uv_pipe_t;
typedef struct uv_tty_s uv_tty_t;
typedef struct uv_poll_s uv_poll_t;
typedef struct uv_timer_s uv_timer_t;
typedef struct uv_prepare_s uv_prepare_t;
typedef struct uv_check_s uv_check_t;
typedef struct uv_idle_s uv_idle_t;
typedef struct uv_async_s uv_async_t;
typedef struct uv_process_s uv_process_t;
typedef struct uv_fs_event_s uv_fs_event_t;
typedef struct uv_fs_poll_s uv_fs_poll_t;
typedef struct uv_signal_s uv_signal_t;
/* Request types. */
typedef struct uv_req_s uv_req_t;
typedef struct uv_getaddrinfo_s uv_getaddrinfo_t;
typedef struct uv_getnameinfo_s uv_getnameinfo_t;
typedef struct uv_shutdown_s uv_shutdown_t;
typedef struct uv_write_s uv_write_t;
typedef struct uv_connect_s uv_connect_t;
typedef struct uv_udp_send_s uv_udp_send_t;
typedef struct uv_fs_s uv_fs_t;
typedef struct uv_work_s uv_work_t;
typedef struct uv_random_s uv_random_t;
/* None of the above. */
typedef struct uv_env_item_s uv_env_item_t;
typedef struct uv_cpu_info_s uv_cpu_info_t;
typedef struct uv_interface_address_s uv_interface_address_t;
typedef struct uv_dirent_s uv_dirent_t;
typedef struct uv_passwd_s uv_passwd_t;
typedef struct uv_utsname_s uv_utsname_t;
typedef struct uv_statfs_s uv_statfs_t;
typedef enum {
UV_LOOP_BLOCK_SIGNAL = 0,
UV_METRICS_IDLE_TIME
} uv_loop_option;
typedef enum {
UV_RUN_DEFAULT = 0,
UV_RUN_ONCE,
UV_RUN_NOWAIT
} uv_run_mode;
UV_EXTERN unsigned int uv_version(void);
UV_EXTERN const char* uv_version_string(void);
typedef void* (*uv_malloc_func)(size_t size);
typedef void* (*uv_realloc_func)(void* ptr, size_t size);
typedef void* (*uv_calloc_func)(size_t count, size_t size);
typedef void (*uv_free_func)(void* ptr);
UV_EXTERN void uv_library_shutdown(void);
UV_EXTERN int uv_replace_allocator(uv_malloc_func malloc_func,
uv_realloc_func realloc_func,
uv_calloc_func calloc_func,
uv_free_func free_func);
UV_EXTERN uv_loop_t* uv_default_loop(void);
UV_EXTERN int uv_loop_init(uv_loop_t* loop);
UV_EXTERN int uv_loop_close(uv_loop_t* loop);
/*
* NOTE:
* This function is DEPRECATED (to be removed after 0.12), users should
* allocate the loop manually and use uv_loop_init instead.
*/
UV_EXTERN uv_loop_t* uv_loop_new(void);
/*
* NOTE:
* This function is DEPRECATED (to be removed after 0.12). Users should use
* uv_loop_close and free the memory manually instead.
*/
UV_EXTERN void uv_loop_delete(uv_loop_t*);
UV_EXTERN size_t uv_loop_size(void);
UV_EXTERN int uv_loop_alive(const uv_loop_t* loop);
UV_EXTERN int uv_loop_configure(uv_loop_t* loop, uv_loop_option option, ...);
UV_EXTERN int uv_loop_fork(uv_loop_t* loop);
UV_EXTERN int uv_run(uv_loop_t*, uv_run_mode mode);
UV_EXTERN void uv_stop(uv_loop_t*);
UV_EXTERN void uv_ref(uv_handle_t*);
UV_EXTERN void uv_unref(uv_handle_t*);
UV_EXTERN int uv_has_ref(const uv_handle_t*);
UV_EXTERN void uv_update_time(uv_loop_t*);
UV_EXTERN uint64_t uv_now(const uv_loop_t*);
UV_EXTERN int uv_backend_fd(const uv_loop_t*);
UV_EXTERN int uv_backend_timeout(const uv_loop_t*);
typedef void (*uv_alloc_cb)(uv_handle_t* handle,
size_t suggested_size,
uv_buf_t* buf);
typedef void (*uv_read_cb)(uv_stream_t* stream,
ssize_t nread,
const uv_buf_t* buf);
typedef void (*uv_write_cb)(uv_write_t* req, int status);
typedef void (*uv_connect_cb)(uv_connect_t* req, int status);
typedef void (*uv_shutdown_cb)(uv_shutdown_t* req, int status);
typedef void (*uv_connection_cb)(uv_stream_t* server, int status);
typedef void (*uv_close_cb)(uv_handle_t* handle);
typedef void (*uv_poll_cb)(uv_poll_t* handle, int status, int events);
typedef void (*uv_timer_cb)(uv_timer_t* handle);
typedef void (*uv_async_cb)(uv_async_t* handle);
typedef void (*uv_prepare_cb)(uv_prepare_t* handle);
typedef void (*uv_check_cb)(uv_check_t* handle);
typedef void (*uv_idle_cb)(uv_idle_t* handle);
typedef void (*uv_exit_cb)(uv_process_t*, int64_t exit_status, int term_signal);
typedef void (*uv_walk_cb)(uv_handle_t* handle, void* arg);
typedef void (*uv_fs_cb)(uv_fs_t* req);
typedef void (*uv_work_cb)(uv_work_t* req);
typedef void (*uv_after_work_cb)(uv_work_t* req, int status);
typedef void (*uv_getaddrinfo_cb)(uv_getaddrinfo_t* req,
int status,
struct addrinfo* res);
typedef void (*uv_getnameinfo_cb)(uv_getnameinfo_t* req,
int status,
const char* hostname,
const char* service);
typedef void (*uv_random_cb)(uv_random_t* req,
int status,
void* buf,
size_t buflen);
typedef struct {
long tv_sec;
long tv_nsec;
} uv_timespec_t;
typedef struct {
uint64_t st_dev;
uint64_t st_mode;
uint64_t st_nlink;
uint64_t st_uid;
uint64_t st_gid;
uint64_t st_rdev;
uint64_t st_ino;
uint64_t st_size;
uint64_t st_blksize;
uint64_t st_blocks;
uint64_t st_flags;
uint64_t st_gen;
uv_timespec_t st_atim;
uv_timespec_t st_mtim;
uv_timespec_t st_ctim;
uv_timespec_t st_birthtim;
} uv_stat_t;
typedef void (*uv_fs_event_cb)(uv_fs_event_t* handle,
const char* filename,
int events,
int status);
typedef void (*uv_fs_poll_cb)(uv_fs_poll_t* handle,
int status,
const uv_stat_t* prev,
const uv_stat_t* curr);
typedef void (*uv_signal_cb)(uv_signal_t* handle, int signum);
typedef enum {
UV_LEAVE_GROUP = 0,
UV_JOIN_GROUP
} uv_membership;
UV_EXTERN int uv_translate_sys_error(int sys_errno);
UV_EXTERN const char* uv_strerror(int err);
UV_EXTERN char* uv_strerror_r(int err, char* buf, size_t buflen);
UV_EXTERN const char* uv_err_name(int err);
UV_EXTERN char* uv_err_name_r(int err, char* buf, size_t buflen);
#define UV_REQ_FIELDS \
/* public */ \
void* data; \
/* read-only */ \
uv_req_type type; \
/* private */ \
void* reserved[6]; \
UV_REQ_PRIVATE_FIELDS \
/* Abstract base class of all requests. */
struct uv_req_s {
UV_REQ_FIELDS
};
/* Platform-specific request types. */
UV_PRIVATE_REQ_TYPES
UV_EXTERN int uv_shutdown(uv_shutdown_t* req,
uv_stream_t* handle,
uv_shutdown_cb cb);
struct uv_shutdown_s {
UV_REQ_FIELDS
uv_stream_t* handle;
uv_shutdown_cb cb;
UV_SHUTDOWN_PRIVATE_FIELDS
};
#define UV_HANDLE_FIELDS \
/* public */ \
void* data; \
/* read-only */ \
uv_loop_t* loop; \
uv_handle_type type; \
/* private */ \
uv_close_cb close_cb; \
void* handle_queue[2]; \
union { \
int fd; \
void* reserved[4]; \
} u; \
UV_HANDLE_PRIVATE_FIELDS \
/* The abstract base class of all handles. */
struct uv_handle_s {
UV_HANDLE_FIELDS
};
UV_EXTERN size_t uv_handle_size(uv_handle_type type);
UV_EXTERN uv_handle_type uv_handle_get_type(const uv_handle_t* handle);
UV_EXTERN const char* uv_handle_type_name(uv_handle_type type);
UV_EXTERN void* uv_handle_get_data(const uv_handle_t* handle);
UV_EXTERN uv_loop_t* uv_handle_get_loop(const uv_handle_t* handle);
UV_EXTERN void uv_handle_set_data(uv_handle_t* handle, void* data);
UV_EXTERN size_t uv_req_size(uv_req_type type);
UV_EXTERN void* uv_req_get_data(const uv_req_t* req);
UV_EXTERN void uv_req_set_data(uv_req_t* req, void* data);
UV_EXTERN uv_req_type uv_req_get_type(const uv_req_t* req);
UV_EXTERN const char* uv_req_type_name(uv_req_type type);
UV_EXTERN int uv_is_active(const uv_handle_t* handle);
UV_EXTERN void uv_walk(uv_loop_t* loop, uv_walk_cb walk_cb, void* arg);
/* Helpers for ad hoc debugging, no API/ABI stability guaranteed. */
UV_EXTERN void uv_print_all_handles(uv_loop_t* loop, FILE* stream);
UV_EXTERN void uv_print_active_handles(uv_loop_t* loop, FILE* stream);
UV_EXTERN void uv_close(uv_handle_t* handle, uv_close_cb close_cb);
UV_EXTERN int uv_send_buffer_size(uv_handle_t* handle, int* value);
UV_EXTERN int uv_recv_buffer_size(uv_handle_t* handle, int* value);
UV_EXTERN int uv_fileno(const uv_handle_t* handle, uv_os_fd_t* fd);
UV_EXTERN uv_buf_t uv_buf_init(char* base, unsigned int len);
UV_EXTERN int uv_pipe(uv_file fds[2], int read_flags, int write_flags);
UV_EXTERN int uv_socketpair(int type,
int protocol,
uv_os_sock_t socket_vector[2],
int flags0,
int flags1);
#define UV_STREAM_FIELDS \
/* number of bytes queued for writing */ \
size_t write_queue_size; \
uv_alloc_cb alloc_cb; \
uv_read_cb read_cb; \
/* private */ \
UV_STREAM_PRIVATE_FIELDS
/*
* uv_stream_t is a subclass of uv_handle_t.
*
* uv_stream is an abstract class.
*
* uv_stream_t is the parent class of uv_tcp_t, uv_pipe_t and uv_tty_t.
*/
struct uv_stream_s {
UV_HANDLE_FIELDS
UV_STREAM_FIELDS
};
UV_EXTERN size_t uv_stream_get_write_queue_size(const uv_stream_t* stream);
UV_EXTERN int uv_listen(uv_stream_t* stream, int backlog, uv_connection_cb cb);
UV_EXTERN int uv_accept(uv_stream_t* server, uv_stream_t* client);
UV_EXTERN int uv_read_start(uv_stream_t*,
uv_alloc_cb alloc_cb,
uv_read_cb read_cb);
UV_EXTERN int uv_read_stop(uv_stream_t*);
UV_EXTERN int uv_write(uv_write_t* req,
uv_stream_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs,
uv_write_cb cb);
UV_EXTERN int uv_write2(uv_write_t* req,
uv_stream_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs,
uv_stream_t* send_handle,
uv_write_cb cb);
UV_EXTERN int uv_try_write(uv_stream_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs);
UV_EXTERN int uv_try_write2(uv_stream_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs,
uv_stream_t* send_handle);
/* uv_write_t is a subclass of uv_req_t. */
struct uv_write_s {
UV_REQ_FIELDS
uv_write_cb cb;
uv_stream_t* send_handle; /* TODO: make private and unix-only in v2.x. */
uv_stream_t* handle;
UV_WRITE_PRIVATE_FIELDS
};
UV_EXTERN int uv_is_readable(const uv_stream_t* handle);
UV_EXTERN int uv_is_writable(const uv_stream_t* handle);
UV_EXTERN int uv_stream_set_blocking(uv_stream_t* handle, int blocking);
UV_EXTERN int uv_is_closing(const uv_handle_t* handle);
/*
* uv_tcp_t is a subclass of uv_stream_t.
*
* Represents a TCP stream or TCP server.
*/
struct uv_tcp_s {
UV_HANDLE_FIELDS
UV_STREAM_FIELDS
UV_TCP_PRIVATE_FIELDS
};
UV_EXTERN int uv_tcp_init(uv_loop_t*, uv_tcp_t* handle);
UV_EXTERN int uv_tcp_init_ex(uv_loop_t*, uv_tcp_t* handle, unsigned int flags);
UV_EXTERN int uv_tcp_open(uv_tcp_t* handle, uv_os_sock_t sock);
UV_EXTERN int uv_tcp_nodelay(uv_tcp_t* handle, int enable);
UV_EXTERN int uv_tcp_keepalive(uv_tcp_t* handle,
int enable,
unsigned int delay);
UV_EXTERN int uv_tcp_simultaneous_accepts(uv_tcp_t* handle, int enable);
enum uv_tcp_flags {
/* Used with uv_tcp_bind, when an IPv6 address is used. */
UV_TCP_IPV6ONLY = 1
};
UV_EXTERN int uv_tcp_bind(uv_tcp_t* handle,
const struct sockaddr* addr,
unsigned int flags);
UV_EXTERN int uv_tcp_getsockname(const uv_tcp_t* handle,
struct sockaddr* name,
int* namelen);
UV_EXTERN int uv_tcp_getpeername(const uv_tcp_t* handle,
struct sockaddr* name,
int* namelen);
UV_EXTERN int uv_tcp_close_reset(uv_tcp_t* handle, uv_close_cb close_cb);
UV_EXTERN int uv_tcp_connect(uv_connect_t* req,
uv_tcp_t* handle,
const struct sockaddr* addr,
uv_connect_cb cb);
/* uv_connect_t is a subclass of uv_req_t. */
struct uv_connect_s {
UV_REQ_FIELDS
uv_connect_cb cb;
uv_stream_t* handle;
UV_CONNECT_PRIVATE_FIELDS
};
/*
* UDP support.
*/
enum uv_udp_flags {
/* Disables dual stack mode. */
UV_UDP_IPV6ONLY = 1,
/*
* Indicates message was truncated because read buffer was too small. The
* remainder was discarded by the OS. Used in uv_udp_recv_cb.
*/
UV_UDP_PARTIAL = 2,
/*
* Indicates if SO_REUSEADDR will be set when binding the handle.
* This sets the SO_REUSEPORT socket flag on the BSDs and OS X. On other
* Unix platforms, it sets the SO_REUSEADDR flag. What that means is that
* multiple threads or processes can bind to the same address without error
* (provided they all set the flag) but only the last one to bind will receive
* any traffic, in effect "stealing" the port from the previous listener.
*/
UV_UDP_REUSEADDR = 4,
/*
* Indicates that the message was received by recvmmsg, so the buffer provided
* must not be freed by the recv_cb callback.
*/
UV_UDP_MMSG_CHUNK = 8,
/*
* Indicates that the buffer provided has been fully utilized by recvmmsg and
* that it should now be freed by the recv_cb callback. When this flag is set
* in uv_udp_recv_cb, nread will always be 0 and addr will always be NULL.
*/
UV_UDP_MMSG_FREE = 16,
/*
* Indicates if IP_RECVERR/IPV6_RECVERR will be set when binding the handle.
* This sets IP_RECVERR for IPv4 and IPV6_RECVERR for IPv6 UDP sockets on
* Linux. This stops the Linux kernel from suppressing some ICMP error
* messages and enables full ICMP error reporting for faster failover.
* This flag is no-op on platforms other than Linux.
*/
UV_UDP_LINUX_RECVERR = 32,
/*
* Indicates that recvmmsg should be used, if available.
*/
UV_UDP_RECVMMSG = 256
};
typedef void (*uv_udp_send_cb)(uv_udp_send_t* req, int status);
typedef void (*uv_udp_recv_cb)(uv_udp_t* handle,
ssize_t nread,
const uv_buf_t* buf,
const struct sockaddr* addr,
unsigned flags);
/* uv_udp_t is a subclass of uv_handle_t. */
struct uv_udp_s {
UV_HANDLE_FIELDS
/* read-only */
/*
* Number of bytes queued for sending. This field strictly shows how much
* information is currently queued.
*/
size_t send_queue_size;
/*
* Number of send requests currently in the queue awaiting to be processed.
*/
size_t send_queue_count;
UV_UDP_PRIVATE_FIELDS
};
/* uv_udp_send_t is a subclass of uv_req_t. */
struct uv_udp_send_s {
UV_REQ_FIELDS
uv_udp_t* handle;
uv_udp_send_cb cb;
UV_UDP_SEND_PRIVATE_FIELDS
};
UV_EXTERN int uv_udp_init(uv_loop_t*, uv_udp_t* handle);
UV_EXTERN int uv_udp_init_ex(uv_loop_t*, uv_udp_t* handle, unsigned int flags);
UV_EXTERN int uv_udp_open(uv_udp_t* handle, uv_os_sock_t sock);
UV_EXTERN int uv_udp_bind(uv_udp_t* handle,
const struct sockaddr* addr,
unsigned int flags);
UV_EXTERN int uv_udp_connect(uv_udp_t* handle, const struct sockaddr* addr);
UV_EXTERN int uv_udp_getpeername(const uv_udp_t* handle,
struct sockaddr* name,
int* namelen);
UV_EXTERN int uv_udp_getsockname(const uv_udp_t* handle,
struct sockaddr* name,
int* namelen);
UV_EXTERN int uv_udp_set_membership(uv_udp_t* handle,
const char* multicast_addr,
const char* interface_addr,
uv_membership membership);
UV_EXTERN int uv_udp_set_source_membership(uv_udp_t* handle,
const char* multicast_addr,
const char* interface_addr,
const char* source_addr,
uv_membership membership);
UV_EXTERN int uv_udp_set_multicast_loop(uv_udp_t* handle, int on);
UV_EXTERN int uv_udp_set_multicast_ttl(uv_udp_t* handle, int ttl);
UV_EXTERN int uv_udp_set_multicast_interface(uv_udp_t* handle,
const char* interface_addr);
UV_EXTERN int uv_udp_set_broadcast(uv_udp_t* handle, int on);
UV_EXTERN int uv_udp_set_ttl(uv_udp_t* handle, int ttl);
UV_EXTERN 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,
uv_udp_send_cb send_cb);
UV_EXTERN int uv_udp_try_send(uv_udp_t* handle,
const uv_buf_t bufs[],
unsigned int nbufs,
const struct sockaddr* addr);
UV_EXTERN int uv_udp_recv_start(uv_udp_t* handle,
uv_alloc_cb alloc_cb,
uv_udp_recv_cb recv_cb);
UV_EXTERN int uv_udp_using_recvmmsg(const uv_udp_t* handle);
UV_EXTERN int uv_udp_recv_stop(uv_udp_t* handle);
UV_EXTERN size_t uv_udp_get_send_queue_size(const uv_udp_t* handle);
UV_EXTERN size_t uv_udp_get_send_queue_count(const uv_udp_t* handle);
/*
* uv_tty_t is a subclass of uv_stream_t.
*
* Representing a stream for the console.
*/
struct uv_tty_s {
UV_HANDLE_FIELDS
UV_STREAM_FIELDS
UV_TTY_PRIVATE_FIELDS
};
typedef enum {
/* Initial/normal terminal mode */
UV_TTY_MODE_NORMAL,
/* Raw input mode (On Windows, ENABLE_WINDOW_INPUT is also enabled) */
UV_TTY_MODE_RAW,
/* Binary-safe I/O mode for IPC (Unix-only) */
UV_TTY_MODE_IO
} uv_tty_mode_t;
typedef enum {
/*
* The console supports handling of virtual terminal sequences
* (Windows10 new console, ConEmu)
*/
UV_TTY_SUPPORTED,
/* The console cannot process the virtual terminal sequence. (Legacy
* console)
*/
UV_TTY_UNSUPPORTED
} uv_tty_vtermstate_t;
UV_EXTERN int uv_tty_init(uv_loop_t*, uv_tty_t*, uv_file fd, int readable);
UV_EXTERN int uv_tty_set_mode(uv_tty_t*, uv_tty_mode_t mode);
UV_EXTERN int uv_tty_reset_mode(void);
UV_EXTERN int uv_tty_get_winsize(uv_tty_t*, int* width, int* height);
UV_EXTERN void uv_tty_set_vterm_state(uv_tty_vtermstate_t state);
UV_EXTERN int uv_tty_get_vterm_state(uv_tty_vtermstate_t* state);
#ifdef __cplusplus
extern "C++" {
inline int uv_tty_set_mode(uv_tty_t* handle, int mode) {
return uv_tty_set_mode(handle, static_cast<uv_tty_mode_t>(mode));
}
}
#endif
UV_EXTERN uv_handle_type uv_guess_handle(uv_file file);
/*
* uv_pipe_t is a subclass of uv_stream_t.
*
* Representing a pipe stream or pipe server. On Windows this is a Named
* Pipe. On Unix this is a Unix domain socket.
*/
struct uv_pipe_s {
UV_HANDLE_FIELDS
UV_STREAM_FIELDS
int ipc; /* non-zero if this pipe is used for passing handles */
UV_PIPE_PRIVATE_FIELDS
};
UV_EXTERN int uv_pipe_init(uv_loop_t*, uv_pipe_t* handle, int ipc);
UV_EXTERN int uv_pipe_open(uv_pipe_t*, uv_file file);
UV_EXTERN int uv_pipe_bind(uv_pipe_t* handle, const char* name);
UV_EXTERN void uv_pipe_connect(uv_connect_t* req,
uv_pipe_t* handle,
const char* name,
uv_connect_cb cb);
UV_EXTERN int uv_pipe_getsockname(const uv_pipe_t* handle,
char* buffer,
size_t* size);
UV_EXTERN int uv_pipe_getpeername(const uv_pipe_t* handle,
char* buffer,
size_t* size);
UV_EXTERN void uv_pipe_pending_instances(uv_pipe_t* handle, int count);
UV_EXTERN int uv_pipe_pending_count(uv_pipe_t* handle);
UV_EXTERN uv_handle_type uv_pipe_pending_type(uv_pipe_t* handle);
UV_EXTERN int uv_pipe_chmod(uv_pipe_t* handle, int flags);
struct uv_poll_s {
UV_HANDLE_FIELDS
uv_poll_cb poll_cb;
UV_POLL_PRIVATE_FIELDS
};
enum uv_poll_event {
UV_READABLE = 1,
UV_WRITABLE = 2,
UV_DISCONNECT = 4,
UV_PRIORITIZED = 8
};
UV_EXTERN int uv_poll_init(uv_loop_t* loop, uv_poll_t* handle, int fd);
UV_EXTERN int uv_poll_init_socket(uv_loop_t* loop,
uv_poll_t* handle,
uv_os_sock_t socket);
UV_EXTERN int uv_poll_start(uv_poll_t* handle, int events, uv_poll_cb cb);
UV_EXTERN int uv_poll_stop(uv_poll_t* handle);
struct uv_prepare_s {
UV_HANDLE_FIELDS
UV_PREPARE_PRIVATE_FIELDS
};
UV_EXTERN int uv_prepare_init(uv_loop_t*, uv_prepare_t* prepare);
UV_EXTERN int uv_prepare_start(uv_prepare_t* prepare, uv_prepare_cb cb);
UV_EXTERN int uv_prepare_stop(uv_prepare_t* prepare);
struct uv_check_s {
UV_HANDLE_FIELDS
UV_CHECK_PRIVATE_FIELDS
};
UV_EXTERN int uv_check_init(uv_loop_t*, uv_check_t* check);
UV_EXTERN int uv_check_start(uv_check_t* check, uv_check_cb cb);
UV_EXTERN int uv_check_stop(uv_check_t* check);
struct uv_idle_s {
UV_HANDLE_FIELDS
UV_IDLE_PRIVATE_FIELDS
};
UV_EXTERN int uv_idle_init(uv_loop_t*, uv_idle_t* idle);
UV_EXTERN int uv_idle_start(uv_idle_t* idle, uv_idle_cb cb);
UV_EXTERN int uv_idle_stop(uv_idle_t* idle);
struct uv_async_s {
UV_HANDLE_FIELDS
UV_ASYNC_PRIVATE_FIELDS
};
UV_EXTERN int uv_async_init(uv_loop_t*,
uv_async_t* async,
uv_async_cb async_cb);
UV_EXTERN int uv_async_send(uv_async_t* async);
/*
* uv_timer_t is a subclass of uv_handle_t.
*
* Used to get woken up at a specified time in the future.
*/
struct uv_timer_s {
UV_HANDLE_FIELDS
UV_TIMER_PRIVATE_FIELDS
};
UV_EXTERN int uv_timer_init(uv_loop_t*, uv_timer_t* handle);
UV_EXTERN int uv_timer_start(uv_timer_t* handle,
uv_timer_cb cb,
uint64_t timeout,
uint64_t repeat);
UV_EXTERN int uv_timer_stop(uv_timer_t* handle);
UV_EXTERN int uv_timer_again(uv_timer_t* handle);
UV_EXTERN void uv_timer_set_repeat(uv_timer_t* handle, uint64_t repeat);
UV_EXTERN uint64_t uv_timer_get_repeat(const uv_timer_t* handle);
UV_EXTERN uint64_t uv_timer_get_due_in(const uv_timer_t* handle);
/*
* uv_getaddrinfo_t is a subclass of uv_req_t.
*
* Request object for uv_getaddrinfo.
*/
struct uv_getaddrinfo_s {
UV_REQ_FIELDS
/* read-only */
uv_loop_t* loop;
/* struct addrinfo* addrinfo is marked as private, but it really isn't. */
UV_GETADDRINFO_PRIVATE_FIELDS
};
UV_EXTERN int uv_getaddrinfo(uv_loop_t* loop,
uv_getaddrinfo_t* req,
uv_getaddrinfo_cb getaddrinfo_cb,
const char* node,
const char* service,
const struct addrinfo* hints);
UV_EXTERN void uv_freeaddrinfo(struct addrinfo* ai);
/*
* uv_getnameinfo_t is a subclass of uv_req_t.
*
* Request object for uv_getnameinfo.
*/
struct uv_getnameinfo_s {
UV_REQ_FIELDS
/* read-only */
uv_loop_t* loop;
/* host and service are marked as private, but they really aren't. */
UV_GETNAMEINFO_PRIVATE_FIELDS
};
UV_EXTERN int uv_getnameinfo(uv_loop_t* loop,
uv_getnameinfo_t* req,
uv_getnameinfo_cb getnameinfo_cb,
const struct sockaddr* addr,
int flags);
/* uv_spawn() options. */
typedef enum {
UV_IGNORE = 0x00,
UV_CREATE_PIPE = 0x01,
UV_INHERIT_FD = 0x02,
UV_INHERIT_STREAM = 0x04,
/*
* When UV_CREATE_PIPE is specified, UV_READABLE_PIPE and UV_WRITABLE_PIPE
* determine the direction of flow, from the child process' perspective. Both
* flags may be specified to create a duplex data stream.
*/
UV_READABLE_PIPE = 0x10,
UV_WRITABLE_PIPE = 0x20,
/*
* When UV_CREATE_PIPE is specified, specifying UV_NONBLOCK_PIPE opens the
* handle in non-blocking mode in the child. This may cause loss of data,
* if the child is not designed to handle to encounter this mode,
* but can also be significantly more efficient.
*/
UV_NONBLOCK_PIPE = 0x40,
UV_OVERLAPPED_PIPE = 0x40 /* old name, for compatibility */
} uv_stdio_flags;
typedef struct uv_stdio_container_s {
uv_stdio_flags flags;
union {
uv_stream_t* stream;
int fd;
} data;
} uv_stdio_container_t;
typedef struct uv_process_options_s {
uv_exit_cb exit_cb; /* Called after the process exits. */
const char* file; /* Path to program to execute. */
/*
* Command line arguments. args[0] should be the path to the program. On
* Windows this uses CreateProcess which concatenates the arguments into a
* string this can cause some strange errors. See the note at
* windows_verbatim_arguments.
*/
char** args;
/*
* This will be set as the environ variable in the subprocess. If this is
* NULL then the parents environ will be used.
*/
char** env;
/*
* If non-null this represents a directory the subprocess should execute
* in. Stands for current working directory.
*/
const char* cwd;
/*
* Various flags that control how uv_spawn() behaves. See the definition of
* `enum uv_process_flags` below.
*/
unsigned int flags;
/*