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Diffstat (limited to '3rdparty/libuv/src/unix/stream.c')
-rw-r--r--3rdparty/libuv/src/unix/stream.c1633
1 files changed, 0 insertions, 1633 deletions
diff --git a/3rdparty/libuv/src/unix/stream.c b/3rdparty/libuv/src/unix/stream.c
deleted file mode 100644
index 9043664dfca..00000000000
--- a/3rdparty/libuv/src/unix/stream.c
+++ /dev/null
@@ -1,1633 +0,0 @@
-/* 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.
- */
-
-#include "uv.h"
-#include "internal.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <errno.h>
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/uio.h>
-#include <sys/un.h>
-#include <unistd.h>
-#include <limits.h> /* IOV_MAX */
-
-#if defined(__APPLE__)
-# include <sys/event.h>
-# include <sys/time.h>
-# include <sys/select.h>
-
-/* Forward declaration */
-typedef struct uv__stream_select_s uv__stream_select_t;
-
-struct uv__stream_select_s {
- uv_stream_t* stream;
- uv_thread_t thread;
- uv_sem_t close_sem;
- uv_sem_t async_sem;
- uv_async_t async;
- int events;
- int fake_fd;
- int int_fd;
- int fd;
- fd_set* sread;
- size_t sread_sz;
- fd_set* swrite;
- size_t swrite_sz;
-};
-#endif /* defined(__APPLE__) */
-
-static void uv__stream_connect(uv_stream_t*);
-static void uv__write(uv_stream_t* stream);
-static void uv__read(uv_stream_t* stream);
-static void uv__stream_io(uv_loop_t* loop, uv__io_t* w, unsigned int events);
-static void uv__write_callbacks(uv_stream_t* stream);
-static size_t uv__write_req_size(uv_write_t* req);
-
-
-void uv__stream_init(uv_loop_t* loop,
- uv_stream_t* stream,
- uv_handle_type type) {
- int err;
-
- uv__handle_init(loop, (uv_handle_t*)stream, type);
- stream->read_cb = NULL;
- stream->alloc_cb = NULL;
- stream->close_cb = NULL;
- stream->connection_cb = NULL;
- stream->connect_req = NULL;
- stream->shutdown_req = NULL;
- stream->accepted_fd = -1;
- stream->queued_fds = NULL;
- stream->delayed_error = 0;
- QUEUE_INIT(&stream->write_queue);
- QUEUE_INIT(&stream->write_completed_queue);
- stream->write_queue_size = 0;
-
- if (loop->emfile_fd == -1) {
- err = uv__open_cloexec("/dev/null", O_RDONLY);
- if (err < 0)
- /* In the rare case that "/dev/null" isn't mounted open "/"
- * instead.
- */
- err = uv__open_cloexec("/", O_RDONLY);
- if (err >= 0)
- loop->emfile_fd = err;
- }
-
-#if defined(__APPLE__)
- stream->select = NULL;
-#endif /* defined(__APPLE_) */
-
- uv__io_init(&stream->io_watcher, uv__stream_io, -1);
-}
-
-
-static void uv__stream_osx_interrupt_select(uv_stream_t* stream) {
-#if defined(__APPLE__)
- /* Notify select() thread about state change */
- uv__stream_select_t* s;
- int r;
-
- s = stream->select;
- if (s == NULL)
- return;
-
- /* Interrupt select() loop
- * NOTE: fake_fd and int_fd are socketpair(), thus writing to one will
- * emit read event on other side
- */
- do
- r = write(s->fake_fd, "x", 1);
- while (r == -1 && errno == EINTR);
-
- assert(r == 1);
-#else /* !defined(__APPLE__) */
- /* No-op on any other platform */
-#endif /* !defined(__APPLE__) */
-}
-
-
-#if defined(__APPLE__)
-static void uv__stream_osx_select(void* arg) {
- uv_stream_t* stream;
- uv__stream_select_t* s;
- char buf[1024];
- int events;
- int fd;
- int r;
- int max_fd;
-
- stream = arg;
- s = stream->select;
- fd = s->fd;
-
- if (fd > s->int_fd)
- max_fd = fd;
- else
- max_fd = s->int_fd;
-
- while (1) {
- /* Terminate on semaphore */
- if (uv_sem_trywait(&s->close_sem) == 0)
- break;
-
- /* Watch fd using select(2) */
- memset(s->sread, 0, s->sread_sz);
- memset(s->swrite, 0, s->swrite_sz);
-
- if (uv__io_active(&stream->io_watcher, UV__POLLIN))
- FD_SET(fd, s->sread);
- if (uv__io_active(&stream->io_watcher, UV__POLLOUT))
- FD_SET(fd, s->swrite);
- FD_SET(s->int_fd, s->sread);
-
- /* Wait indefinitely for fd events */
- r = select(max_fd + 1, s->sread, s->swrite, NULL, NULL);
- if (r == -1) {
- if (errno == EINTR)
- continue;
-
- /* XXX: Possible?! */
- abort();
- }
-
- /* Ignore timeouts */
- if (r == 0)
- continue;
-
- /* Empty socketpair's buffer in case of interruption */
- if (FD_ISSET(s->int_fd, s->sread))
- while (1) {
- r = read(s->int_fd, buf, sizeof(buf));
-
- if (r == sizeof(buf))
- continue;
-
- if (r != -1)
- break;
-
- if (errno == EAGAIN || errno == EWOULDBLOCK)
- break;
-
- if (errno == EINTR)
- continue;
-
- abort();
- }
-
- /* Handle events */
- events = 0;
- if (FD_ISSET(fd, s->sread))
- events |= UV__POLLIN;
- if (FD_ISSET(fd, s->swrite))
- events |= UV__POLLOUT;
-
- assert(events != 0 || FD_ISSET(s->int_fd, s->sread));
- if (events != 0) {
- ACCESS_ONCE(int, s->events) = events;
-
- uv_async_send(&s->async);
- uv_sem_wait(&s->async_sem);
-
- /* Should be processed at this stage */
- assert((s->events == 0) || (stream->flags & UV_CLOSING));
- }
- }
-}
-
-
-static void uv__stream_osx_select_cb(uv_async_t* handle) {
- uv__stream_select_t* s;
- uv_stream_t* stream;
- int events;
-
- s = container_of(handle, uv__stream_select_t, async);
- stream = s->stream;
-
- /* Get and reset stream's events */
- events = s->events;
- ACCESS_ONCE(int, s->events) = 0;
-
- assert(events != 0);
- assert(events == (events & (UV__POLLIN | UV__POLLOUT)));
-
- /* Invoke callback on event-loop */
- if ((events & UV__POLLIN) && uv__io_active(&stream->io_watcher, UV__POLLIN))
- uv__stream_io(stream->loop, &stream->io_watcher, UV__POLLIN);
-
- if ((events & UV__POLLOUT) && uv__io_active(&stream->io_watcher, UV__POLLOUT))
- uv__stream_io(stream->loop, &stream->io_watcher, UV__POLLOUT);
-
- if (stream->flags & UV_CLOSING)
- return;
-
- /* NOTE: It is important to do it here, otherwise `select()` might be called
- * before the actual `uv__read()`, leading to the blocking syscall
- */
- uv_sem_post(&s->async_sem);
-}
-
-
-static void uv__stream_osx_cb_close(uv_handle_t* async) {
- uv__stream_select_t* s;
-
- s = container_of(async, uv__stream_select_t, async);
- uv__free(s);
-}
-
-
-int uv__stream_try_select(uv_stream_t* stream, int* fd) {
- /*
- * kqueue doesn't work with some files from /dev mount on osx.
- * select(2) in separate thread for those fds
- */
-
- struct kevent filter[1];
- struct kevent events[1];
- struct timespec timeout;
- uv__stream_select_t* s;
- int fds[2];
- int err;
- int ret;
- int kq;
- int old_fd;
- int max_fd;
- size_t sread_sz;
- size_t swrite_sz;
-
- kq = kqueue();
- if (kq == -1) {
- perror("(libuv) kqueue()");
- return -errno;
- }
-
- EV_SET(&filter[0], *fd, EVFILT_READ, EV_ADD | EV_ENABLE, 0, 0, 0);
-
- /* Use small timeout, because we only want to capture EINVALs */
- timeout.tv_sec = 0;
- timeout.tv_nsec = 1;
-
- ret = kevent(kq, filter, 1, events, 1, &timeout);
- uv__close(kq);
-
- if (ret == -1)
- return -errno;
-
- if (ret == 0 || (events[0].flags & EV_ERROR) == 0 || events[0].data != EINVAL)
- return 0;
-
- /* At this point we definitely know that this fd won't work with kqueue */
-
- /*
- * Create fds for io watcher and to interrupt the select() loop.
- * NOTE: do it ahead of malloc below to allocate enough space for fd_sets
- */
- if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds))
- return -errno;
-
- max_fd = *fd;
- if (fds[1] > max_fd)
- max_fd = fds[1];
-
- sread_sz = ROUND_UP(max_fd + 1, sizeof(uint32_t) * NBBY) / NBBY;
- swrite_sz = sread_sz;
-
- s = uv__malloc(sizeof(*s) + sread_sz + swrite_sz);
- if (s == NULL) {
- err = -ENOMEM;
- goto failed_malloc;
- }
-
- s->events = 0;
- s->fd = *fd;
- s->sread = (fd_set*) ((char*) s + sizeof(*s));
- s->sread_sz = sread_sz;
- s->swrite = (fd_set*) ((char*) s->sread + sread_sz);
- s->swrite_sz = swrite_sz;
-
- err = uv_async_init(stream->loop, &s->async, uv__stream_osx_select_cb);
- if (err)
- goto failed_async_init;
-
- s->async.flags |= UV__HANDLE_INTERNAL;
- uv__handle_unref(&s->async);
-
- err = uv_sem_init(&s->close_sem, 0);
- if (err != 0)
- goto failed_close_sem_init;
-
- err = uv_sem_init(&s->async_sem, 0);
- if (err != 0)
- goto failed_async_sem_init;
-
- s->fake_fd = fds[0];
- s->int_fd = fds[1];
-
- old_fd = *fd;
- s->stream = stream;
- stream->select = s;
- *fd = s->fake_fd;
-
- err = uv_thread_create(&s->thread, uv__stream_osx_select, stream);
- if (err != 0)
- goto failed_thread_create;
-
- return 0;
-
-failed_thread_create:
- s->stream = NULL;
- stream->select = NULL;
- *fd = old_fd;
-
- uv_sem_destroy(&s->async_sem);
-
-failed_async_sem_init:
- uv_sem_destroy(&s->close_sem);
-
-failed_close_sem_init:
- uv__close(fds[0]);
- uv__close(fds[1]);
- uv_close((uv_handle_t*) &s->async, uv__stream_osx_cb_close);
- return err;
-
-failed_async_init:
- uv__free(s);
-
-failed_malloc:
- uv__close(fds[0]);
- uv__close(fds[1]);
-
- return err;
-}
-#endif /* defined(__APPLE__) */
-
-
-int uv__stream_open(uv_stream_t* stream, int fd, int flags) {
-#if defined(__APPLE__)
- int enable;
-#endif
-
- if (!(stream->io_watcher.fd == -1 || stream->io_watcher.fd == fd))
- return -EBUSY;
-
- assert(fd >= 0);
- stream->flags |= flags;
-
- if (stream->type == UV_TCP) {
- if ((stream->flags & UV_TCP_NODELAY) && uv__tcp_nodelay(fd, 1))
- return -errno;
-
- /* TODO Use delay the user passed in. */
- if ((stream->flags & UV_TCP_KEEPALIVE) && uv__tcp_keepalive(fd, 1, 60))
- return -errno;
- }
-
-#if defined(__APPLE__)
- enable = 1;
- if (setsockopt(fd, SOL_SOCKET, SO_OOBINLINE, &enable, sizeof(enable)) &&
- errno != ENOTSOCK &&
- errno != EINVAL) {
- return -errno;
- }
-#endif
-
- stream->io_watcher.fd = fd;
-
- return 0;
-}
-
-
-void uv__stream_flush_write_queue(uv_stream_t* stream, int error) {
- uv_write_t* req;
- QUEUE* q;
- while (!QUEUE_EMPTY(&stream->write_queue)) {
- q = QUEUE_HEAD(&stream->write_queue);
- QUEUE_REMOVE(q);
-
- req = QUEUE_DATA(q, uv_write_t, queue);
- req->error = error;
-
- QUEUE_INSERT_TAIL(&stream->write_completed_queue, &req->queue);
- }
-}
-
-
-void uv__stream_destroy(uv_stream_t* stream) {
- assert(!uv__io_active(&stream->io_watcher, UV__POLLIN | UV__POLLOUT));
- assert(stream->flags & UV_CLOSED);
-
- if (stream->connect_req) {
- uv__req_unregister(stream->loop, stream->connect_req);
- stream->connect_req->cb(stream->connect_req, -ECANCELED);
- stream->connect_req = NULL;
- }
-
- uv__stream_flush_write_queue(stream, -ECANCELED);
- uv__write_callbacks(stream);
-
- if (stream->shutdown_req) {
- /* The ECANCELED error code is a lie, the shutdown(2) syscall is a
- * fait accompli at this point. Maybe we should revisit this in v0.11.
- * A possible reason for leaving it unchanged is that it informs the
- * callee that the handle has been destroyed.
- */
- uv__req_unregister(stream->loop, stream->shutdown_req);
- stream->shutdown_req->cb(stream->shutdown_req, -ECANCELED);
- stream->shutdown_req = NULL;
- }
-
- assert(stream->write_queue_size == 0);
-}
-
-
-/* Implements a best effort approach to mitigating accept() EMFILE errors.
- * We have a spare file descriptor stashed away that we close to get below
- * the EMFILE limit. Next, we accept all pending connections and close them
- * immediately to signal the clients that we're overloaded - and we are, but
- * we still keep on trucking.
- *
- * There is one caveat: it's not reliable in a multi-threaded environment.
- * The file descriptor limit is per process. Our party trick fails if another
- * thread opens a file or creates a socket in the time window between us
- * calling close() and accept().
- */
-static int uv__emfile_trick(uv_loop_t* loop, int accept_fd) {
- int err;
- int emfile_fd;
-
- if (loop->emfile_fd == -1)
- return -EMFILE;
-
- uv__close(loop->emfile_fd);
- loop->emfile_fd = -1;
-
- do {
- err = uv__accept(accept_fd);
- if (err >= 0)
- uv__close(err);
- } while (err >= 0 || err == -EINTR);
-
- emfile_fd = uv__open_cloexec("/", O_RDONLY);
- if (emfile_fd >= 0)
- loop->emfile_fd = emfile_fd;
-
- return err;
-}
-
-
-#if defined(UV_HAVE_KQUEUE)
-# define UV_DEC_BACKLOG(w) w->rcount--;
-#else
-# define UV_DEC_BACKLOG(w) /* no-op */
-#endif /* defined(UV_HAVE_KQUEUE) */
-
-
-void uv__server_io(uv_loop_t* loop, uv__io_t* w, unsigned int events) {
- uv_stream_t* stream;
- int err;
-
- stream = container_of(w, uv_stream_t, io_watcher);
- assert(events == UV__POLLIN);
- assert(stream->accepted_fd == -1);
- assert(!(stream->flags & UV_CLOSING));
-
- uv__io_start(stream->loop, &stream->io_watcher, UV__POLLIN);
-
- /* connection_cb can close the server socket while we're
- * in the loop so check it on each iteration.
- */
- while (uv__stream_fd(stream) != -1) {
- assert(stream->accepted_fd == -1);
-
-#if defined(UV_HAVE_KQUEUE)
- if (w->rcount <= 0)
- return;
-#endif /* defined(UV_HAVE_KQUEUE) */
-
- err = uv__accept(uv__stream_fd(stream));
- if (err < 0) {
- if (err == -EAGAIN || err == -EWOULDBLOCK)
- return; /* Not an error. */
-
- if (err == -ECONNABORTED)
- continue; /* Ignore. Nothing we can do about that. */
-
- if (err == -EMFILE || err == -ENFILE) {
- err = uv__emfile_trick(loop, uv__stream_fd(stream));
- if (err == -EAGAIN || err == -EWOULDBLOCK)
- break;
- }
-
- stream->connection_cb(stream, err);
- continue;
- }
-
- UV_DEC_BACKLOG(w)
- stream->accepted_fd = err;
- stream->connection_cb(stream, 0);
-
- if (stream->accepted_fd != -1) {
- /* The user hasn't yet accepted called uv_accept() */
- uv__io_stop(loop, &stream->io_watcher, UV__POLLIN);
- return;
- }
-
- if (stream->type == UV_TCP && (stream->flags & UV_TCP_SINGLE_ACCEPT)) {
- /* Give other processes a chance to accept connections. */
- struct timespec timeout = { 0, 1 };
- nanosleep(&timeout, NULL);
- }
- }
-}
-
-
-#undef UV_DEC_BACKLOG
-
-
-int uv_accept(uv_stream_t* server, uv_stream_t* client) {
- int err;
-
- /* TODO document this */
- assert(server->loop == client->loop);
-
- if (server->accepted_fd == -1)
- return -EAGAIN;
-
- switch (client->type) {
- case UV_NAMED_PIPE:
- case UV_TCP:
- err = uv__stream_open(client,
- server->accepted_fd,
- UV_STREAM_READABLE | UV_STREAM_WRITABLE);
- if (err) {
- /* TODO handle error */
- uv__close(server->accepted_fd);
- goto done;
- }
- break;
-
- case UV_UDP:
- err = uv_udp_open((uv_udp_t*) client, server->accepted_fd);
- if (err) {
- uv__close(server->accepted_fd);
- goto done;
- }
- break;
-
- default:
- return -EINVAL;
- }
-
-done:
- /* Process queued fds */
- if (server->queued_fds != NULL) {
- uv__stream_queued_fds_t* queued_fds;
-
- queued_fds = server->queued_fds;
-
- /* Read first */
- server->accepted_fd = queued_fds->fds[0];
-
- /* All read, free */
- assert(queued_fds->offset > 0);
- if (--queued_fds->offset == 0) {
- uv__free(queued_fds);
- server->queued_fds = NULL;
- } else {
- /* Shift rest */
- memmove(queued_fds->fds,
- queued_fds->fds + 1,
- queued_fds->offset * sizeof(*queued_fds->fds));
- }
- } else {
- server->accepted_fd = -1;
- if (err == 0)
- uv__io_start(server->loop, &server->io_watcher, UV__POLLIN);
- }
- return err;
-}
-
-
-int uv_listen(uv_stream_t* stream, int backlog, uv_connection_cb cb) {
- int err;
-
- switch (stream->type) {
- case UV_TCP:
- err = uv_tcp_listen((uv_tcp_t*)stream, backlog, cb);
- break;
-
- case UV_NAMED_PIPE:
- err = uv_pipe_listen((uv_pipe_t*)stream, backlog, cb);
- break;
-
- default:
- err = -EINVAL;
- }
-
- if (err == 0)
- uv__handle_start(stream);
-
- return err;
-}
-
-
-static void uv__drain(uv_stream_t* stream) {
- uv_shutdown_t* req;
- int err;
-
- assert(QUEUE_EMPTY(&stream->write_queue));
- uv__io_stop(stream->loop, &stream->io_watcher, UV__POLLOUT);
- uv__stream_osx_interrupt_select(stream);
-
- /* Shutdown? */
- if ((stream->flags & UV_STREAM_SHUTTING) &&
- !(stream->flags & UV_CLOSING) &&
- !(stream->flags & UV_STREAM_SHUT)) {
- assert(stream->shutdown_req);
-
- req = stream->shutdown_req;
- stream->shutdown_req = NULL;
- stream->flags &= ~UV_STREAM_SHUTTING;
- uv__req_unregister(stream->loop, req);
-
- err = 0;
- if (shutdown(uv__stream_fd(stream), SHUT_WR))
- err = -errno;
-
- if (err == 0)
- stream->flags |= UV_STREAM_SHUT;
-
- if (req->cb != NULL)
- req->cb(req, err);
- }
-}
-
-
-static size_t uv__write_req_size(uv_write_t* req) {
- size_t size;
-
- assert(req->bufs != NULL);
- size = uv__count_bufs(req->bufs + req->write_index,
- req->nbufs - req->write_index);
- assert(req->handle->write_queue_size >= size);
-
- return size;
-}
-
-
-static void uv__write_req_finish(uv_write_t* req) {
- uv_stream_t* stream = req->handle;
-
- /* Pop the req off tcp->write_queue. */
- QUEUE_REMOVE(&req->queue);
-
- /* Only free when there was no error. On error, we touch up write_queue_size
- * right before making the callback. The reason we don't do that right away
- * is that a write_queue_size > 0 is our only way to signal to the user that
- * they should stop writing - which they should if we got an error. Something
- * to revisit in future revisions of the libuv API.
- */
- if (req->error == 0) {
- if (req->bufs != req->bufsml)
- uv__free(req->bufs);
- req->bufs = NULL;
- }
-
- /* Add it to the write_completed_queue where it will have its
- * callback called in the near future.
- */
- QUEUE_INSERT_TAIL(&stream->write_completed_queue, &req->queue);
- uv__io_feed(stream->loop, &stream->io_watcher);
-}
-
-
-static int uv__handle_fd(uv_handle_t* handle) {
- switch (handle->type) {
- case UV_NAMED_PIPE:
- case UV_TCP:
- return ((uv_stream_t*) handle)->io_watcher.fd;
-
- case UV_UDP:
- return ((uv_udp_t*) handle)->io_watcher.fd;
-
- default:
- return -1;
- }
-}
-
-static void uv__write(uv_stream_t* stream) {
- struct iovec* iov;
- QUEUE* q;
- uv_write_t* req;
- int iovmax;
- int iovcnt;
- ssize_t n;
-
-start:
-
- assert(uv__stream_fd(stream) >= 0);
-
- if (QUEUE_EMPTY(&stream->write_queue))
- return;
-
- q = QUEUE_HEAD(&stream->write_queue);
- req = QUEUE_DATA(q, uv_write_t, queue);
- assert(req->handle == stream);
-
- /*
- * Cast to iovec. We had to have our own uv_buf_t instead of iovec
- * because Windows's WSABUF is not an iovec.
- */
- assert(sizeof(uv_buf_t) == sizeof(struct iovec));
- iov = (struct iovec*) &(req->bufs[req->write_index]);
- iovcnt = req->nbufs - req->write_index;
-
- iovmax = uv__getiovmax();
-
- /* Limit iov count to avoid EINVALs from writev() */
- if (iovcnt > iovmax)
- iovcnt = iovmax;
-
- /*
- * Now do the actual writev. Note that we've been updating the pointers
- * inside the iov each time we write. So there is no need to offset it.
- */
-
- if (req->send_handle) {
- struct msghdr msg;
- struct cmsghdr *cmsg;
- int fd_to_send = uv__handle_fd((uv_handle_t*) req->send_handle);
- char scratch[64] = {0};
-
- assert(fd_to_send >= 0);
-
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_iov = iov;
- msg.msg_iovlen = iovcnt;
- msg.msg_flags = 0;
-
- msg.msg_control = (void*) scratch;
- msg.msg_controllen = CMSG_SPACE(sizeof(fd_to_send));
-
- cmsg = CMSG_FIRSTHDR(&msg);
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_RIGHTS;
- cmsg->cmsg_len = CMSG_LEN(sizeof(fd_to_send));
-
- /* silence aliasing warning */
- {
- void* pv = CMSG_DATA(cmsg);
- int* pi = pv;
- *pi = fd_to_send;
- }
-
- do {
- n = sendmsg(uv__stream_fd(stream), &msg, 0);
- }
-#if defined(__APPLE__)
- /*
- * Due to a possible kernel bug at least in OS X 10.10 "Yosemite",
- * EPROTOTYPE can be returned while trying to write to a socket that is
- * shutting down. If we retry the write, we should get the expected EPIPE
- * instead.
- */
- while (n == -1 && (errno == EINTR || errno == EPROTOTYPE));
-#else
- while (n == -1 && errno == EINTR);
-#endif
- } else {
- do {
- if (iovcnt == 1) {
- n = write(uv__stream_fd(stream), iov[0].iov_base, iov[0].iov_len);
- } else {
- n = writev(uv__stream_fd(stream), iov, iovcnt);
- }
- }
-#if defined(__APPLE__)
- /*
- * Due to a possible kernel bug at least in OS X 10.10 "Yosemite",
- * EPROTOTYPE can be returned while trying to write to a socket that is
- * shutting down. If we retry the write, we should get the expected EPIPE
- * instead.
- */
- while (n == -1 && (errno == EINTR || errno == EPROTOTYPE));
-#else
- while (n == -1 && errno == EINTR);
-#endif
- }
-
- if (n < 0) {
- if (errno != EAGAIN && errno != EWOULDBLOCK) {
- /* Error */
- req->error = -errno;
- uv__write_req_finish(req);
- uv__io_stop(stream->loop, &stream->io_watcher, UV__POLLOUT);
- if (!uv__io_active(&stream->io_watcher, UV__POLLIN))
- uv__handle_stop(stream);
- uv__stream_osx_interrupt_select(stream);
- return;
- } else if (stream->flags & UV_STREAM_BLOCKING) {
- /* If this is a blocking stream, try again. */
- goto start;
- }
- } else {
- /* Successful write */
-
- while (n >= 0) {
- uv_buf_t* buf = &(req->bufs[req->write_index]);
- size_t len = buf->len;
-
- assert(req->write_index < req->nbufs);
-
- if ((size_t)n < len) {
- buf->base += n;
- buf->len -= n;
- stream->write_queue_size -= n;
- n = 0;
-
- /* There is more to write. */
- if (stream->flags & UV_STREAM_BLOCKING) {
- /*
- * If we're blocking then we should not be enabling the write
- * watcher - instead we need to try again.
- */
- goto start;
- } else {
- /* Break loop and ensure the watcher is pending. */
- break;
- }
-
- } else {
- /* Finished writing the buf at index req->write_index. */
- req->write_index++;
-
- assert((size_t)n >= len);
- n -= len;
-
- assert(stream->write_queue_size >= len);
- stream->write_queue_size -= len;
-
- if (req->write_index == req->nbufs) {
- /* Then we're done! */
- assert(n == 0);
- uv__write_req_finish(req);
- /* TODO: start trying to write the next request. */
- return;
- }
- }
- }
- }
-
- /* Either we've counted n down to zero or we've got EAGAIN. */
- assert(n == 0 || n == -1);
-
- /* Only non-blocking streams should use the write_watcher. */
- assert(!(stream->flags & UV_STREAM_BLOCKING));
-
- /* We're not done. */
- uv__io_start(stream->loop, &stream->io_watcher, UV__POLLOUT);
-
- /* Notify select() thread about state change */
- uv__stream_osx_interrupt_select(stream);
-}
-
-
-static void uv__write_callbacks(uv_stream_t* stream) {
- uv_write_t* req;
- QUEUE* q;
-
- while (!QUEUE_EMPTY(&stream->write_completed_queue)) {
- /* Pop a req off write_completed_queue. */
- q = QUEUE_HEAD(&stream->write_completed_queue);
- req = QUEUE_DATA(q, uv_write_t, queue);
- QUEUE_REMOVE(q);
- uv__req_unregister(stream->loop, req);
-
- if (req->bufs != NULL) {
- stream->write_queue_size -= uv__write_req_size(req);
- if (req->bufs != req->bufsml)
- uv__free(req->bufs);
- req->bufs = NULL;
- }
-
- /* NOTE: call callback AFTER freeing the request data. */
- if (req->cb)
- req->cb(req, req->error);
- }
-
- assert(QUEUE_EMPTY(&stream->write_completed_queue));
-}
-
-
-uv_handle_type uv__handle_type(int fd) {
- struct sockaddr_storage ss;
- socklen_t sslen;
- socklen_t len;
- int type;
-
- memset(&ss, 0, sizeof(ss));
- sslen = sizeof(ss);
-
- if (getsockname(fd, (struct sockaddr*)&ss, &sslen))
- return UV_UNKNOWN_HANDLE;
-
- len = sizeof type;
-
- if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &type, &len))
- return UV_UNKNOWN_HANDLE;
-
- if (type == SOCK_STREAM) {
-#if defined(_AIX)
- /* on AIX the getsockname call returns an empty sa structure
- * for sockets of type AF_UNIX. For all other types it will
- * return a properly filled in structure.
- */
- if (sslen == 0)
- return UV_NAMED_PIPE;
-#endif
- switch (ss.ss_family) {
- case AF_UNIX:
- return UV_NAMED_PIPE;
- case AF_INET:
- case AF_INET6:
- return UV_TCP;
- }
- }
-
- if (type == SOCK_DGRAM &&
- (ss.ss_family == AF_INET || ss.ss_family == AF_INET6))
- return UV_UDP;
-
- return UV_UNKNOWN_HANDLE;
-}
-
-
-static void uv__stream_eof(uv_stream_t* stream, const uv_buf_t* buf) {
- stream->flags |= UV_STREAM_READ_EOF;
- uv__io_stop(stream->loop, &stream->io_watcher, UV__POLLIN);
- if (!uv__io_active(&stream->io_watcher, UV__POLLOUT))
- uv__handle_stop(stream);
- uv__stream_osx_interrupt_select(stream);
- stream->read_cb(stream, UV_EOF, buf);
- stream->flags &= ~UV_STREAM_READING;
-}
-
-
-static int uv__stream_queue_fd(uv_stream_t* stream, int fd) {
- uv__stream_queued_fds_t* queued_fds;
- unsigned int queue_size;
-
- queued_fds = stream->queued_fds;
- if (queued_fds == NULL) {
- queue_size = 8;
- queued_fds = uv__malloc((queue_size - 1) * sizeof(*queued_fds->fds) +
- sizeof(*queued_fds));
- if (queued_fds == NULL)
- return -ENOMEM;
- queued_fds->size = queue_size;
- queued_fds->offset = 0;
- stream->queued_fds = queued_fds;
-
- /* Grow */
- } else if (queued_fds->size == queued_fds->offset) {
- queue_size = queued_fds->size + 8;
- queued_fds = uv__realloc(queued_fds,
- (queue_size - 1) * sizeof(*queued_fds->fds) +
- sizeof(*queued_fds));
-
- /*
- * Allocation failure, report back.
- * NOTE: if it is fatal - sockets will be closed in uv__stream_close
- */
- if (queued_fds == NULL)
- return -ENOMEM;
- queued_fds->size = queue_size;
- stream->queued_fds = queued_fds;
- }
-
- /* Put fd in a queue */
- queued_fds->fds[queued_fds->offset++] = fd;
-
- return 0;
-}
-
-
-#define UV__CMSG_FD_COUNT 64
-#define UV__CMSG_FD_SIZE (UV__CMSG_FD_COUNT * sizeof(int))
-
-
-static int uv__stream_recv_cmsg(uv_stream_t* stream, struct msghdr* msg) {
- struct cmsghdr* cmsg;
-
- for (cmsg = CMSG_FIRSTHDR(msg); cmsg != NULL; cmsg = CMSG_NXTHDR(msg, cmsg)) {
- char* start;
- char* end;
- int err;
- void* pv;
- int* pi;
- unsigned int i;
- unsigned int count;
-
- if (cmsg->cmsg_type != SCM_RIGHTS) {
- fprintf(stderr, "ignoring non-SCM_RIGHTS ancillary data: %d\n",
- cmsg->cmsg_type);
- continue;
- }
-
- /* silence aliasing warning */
- pv = CMSG_DATA(cmsg);
- pi = pv;
-
- /* Count available fds */
- start = (char*) cmsg;
- end = (char*) cmsg + cmsg->cmsg_len;
- count = 0;
- while (start + CMSG_LEN(count * sizeof(*pi)) < end)
- count++;
- assert(start + CMSG_LEN(count * sizeof(*pi)) == end);
-
- for (i = 0; i < count; i++) {
- /* Already has accepted fd, queue now */
- if (stream->accepted_fd != -1) {
- err = uv__stream_queue_fd(stream, pi[i]);
- if (err != 0) {
- /* Close rest */
- for (; i < count; i++)
- uv__close(pi[i]);
- return err;
- }
- } else {
- stream->accepted_fd = pi[i];
- }
- }
- }
-
- return 0;
-}
-
-
-#ifdef __clang__
-# pragma clang diagnostic push
-# pragma clang diagnostic ignored "-Wgnu-folding-constant"
-#endif
-
-static void uv__read(uv_stream_t* stream) {
- uv_buf_t buf;
- ssize_t nread;
- struct msghdr msg;
- char cmsg_space[CMSG_SPACE(UV__CMSG_FD_SIZE)];
- int count;
- int err;
- int is_ipc;
-
- stream->flags &= ~UV_STREAM_READ_PARTIAL;
-
- /* Prevent loop starvation when the data comes in as fast as (or faster than)
- * we can read it. XXX Need to rearm fd if we switch to edge-triggered I/O.
- */
- count = 32;
-
- is_ipc = stream->type == UV_NAMED_PIPE && ((uv_pipe_t*) stream)->ipc;
-
- /* XXX: Maybe instead of having UV_STREAM_READING we just test if
- * tcp->read_cb is NULL or not?
- */
- while (stream->read_cb
- && (stream->flags & UV_STREAM_READING)
- && (count-- > 0)) {
- assert(stream->alloc_cb != NULL);
-
- stream->alloc_cb((uv_handle_t*)stream, 64 * 1024, &buf);
- if (buf.len == 0) {
- /* User indicates it can't or won't handle the read. */
- stream->read_cb(stream, UV_ENOBUFS, &buf);
- return;
- }
-
- assert(buf.base != NULL);
- assert(uv__stream_fd(stream) >= 0);
-
- if (!is_ipc) {
- do {
- nread = read(uv__stream_fd(stream), buf.base, buf.len);
- }
- while (nread < 0 && errno == EINTR);
- } else {
- /* ipc uses recvmsg */
- msg.msg_flags = 0;
- msg.msg_iov = (struct iovec*) &buf;
- msg.msg_iovlen = 1;
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- /* Set up to receive a descriptor even if one isn't in the message */
- msg.msg_controllen = sizeof(cmsg_space);
- msg.msg_control = cmsg_space;
-
- do {
- nread = uv__recvmsg(uv__stream_fd(stream), &msg, 0);
- }
- while (nread < 0 && errno == EINTR);
- }
-
- if (nread < 0) {
- /* Error */
- if (errno == EAGAIN || errno == EWOULDBLOCK) {
- /* Wait for the next one. */
- if (stream->flags & UV_STREAM_READING) {
- uv__io_start(stream->loop, &stream->io_watcher, UV__POLLIN);
- uv__stream_osx_interrupt_select(stream);
- }
- stream->read_cb(stream, 0, &buf);
- } else {
- /* Error. User should call uv_close(). */
- stream->read_cb(stream, -errno, &buf);
- if (stream->flags & UV_STREAM_READING) {
- stream->flags &= ~UV_STREAM_READING;
- uv__io_stop(stream->loop, &stream->io_watcher, UV__POLLIN);
- if (!uv__io_active(&stream->io_watcher, UV__POLLOUT))
- uv__handle_stop(stream);
- uv__stream_osx_interrupt_select(stream);
- }
- }
- return;
- } else if (nread == 0) {
- uv__stream_eof(stream, &buf);
- return;
- } else {
- /* Successful read */
- ssize_t buflen = buf.len;
-
- if (is_ipc) {
- err = uv__stream_recv_cmsg(stream, &msg);
- if (err != 0) {
- stream->read_cb(stream, err, &buf);
- return;
- }
- }
- stream->read_cb(stream, nread, &buf);
-
- /* Return if we didn't fill the buffer, there is no more data to read. */
- if (nread < buflen) {
- stream->flags |= UV_STREAM_READ_PARTIAL;
- return;
- }
- }
- }
-}
-
-
-#ifdef __clang__
-# pragma clang diagnostic pop
-#endif
-
-#undef UV__CMSG_FD_COUNT
-#undef UV__CMSG_FD_SIZE
-
-
-int uv_shutdown(uv_shutdown_t* req, uv_stream_t* stream, uv_shutdown_cb cb) {
- assert((stream->type == UV_TCP || stream->type == UV_NAMED_PIPE) &&
- "uv_shutdown (unix) only supports uv_handle_t right now");
-
- if (!(stream->flags & UV_STREAM_WRITABLE) ||
- stream->flags & UV_STREAM_SHUT ||
- stream->flags & UV_STREAM_SHUTTING ||
- stream->flags & UV_CLOSED ||
- stream->flags & UV_CLOSING) {
- return -ENOTCONN;
- }
-
- assert(uv__stream_fd(stream) >= 0);
-
- /* Initialize request */
- uv__req_init(stream->loop, req, UV_SHUTDOWN);
- req->handle = stream;
- req->cb = cb;
- stream->shutdown_req = req;
- stream->flags |= UV_STREAM_SHUTTING;
-
- uv__io_start(stream->loop, &stream->io_watcher, UV__POLLOUT);
- uv__stream_osx_interrupt_select(stream);
-
- return 0;
-}
-
-
-static void uv__stream_io(uv_loop_t* loop, uv__io_t* w, unsigned int events) {
- uv_stream_t* stream;
-
- stream = container_of(w, uv_stream_t, io_watcher);
-
- assert(stream->type == UV_TCP ||
- stream->type == UV_NAMED_PIPE ||
- stream->type == UV_TTY);
- assert(!(stream->flags & UV_CLOSING));
-
- if (stream->connect_req) {
- uv__stream_connect(stream);
- return;
- }
-
- assert(uv__stream_fd(stream) >= 0);
-
- /* Ignore POLLHUP here. Even it it's set, there may still be data to read. */
- if (events & (UV__POLLIN | UV__POLLERR | UV__POLLHUP))
- uv__read(stream);
-
- if (uv__stream_fd(stream) == -1)
- return; /* read_cb closed stream. */
-
- /* Short-circuit iff POLLHUP is set, the user is still interested in read
- * events and uv__read() reported a partial read but not EOF. If the EOF
- * flag is set, uv__read() called read_cb with err=UV_EOF and we don't
- * have to do anything. If the partial read flag is not set, we can't
- * report the EOF yet because there is still data to read.
- */
- if ((events & UV__POLLHUP) &&
- (stream->flags & UV_STREAM_READING) &&
- (stream->flags & UV_STREAM_READ_PARTIAL) &&
- !(stream->flags & UV_STREAM_READ_EOF)) {
- uv_buf_t buf = { NULL, 0 };
- uv__stream_eof(stream, &buf);
- }
-
- if (uv__stream_fd(stream) == -1)
- return; /* read_cb closed stream. */
-
- if (events & (UV__POLLOUT | UV__POLLERR | UV__POLLHUP)) {
- uv__write(stream);
- uv__write_callbacks(stream);
-
- /* Write queue drained. */
- if (QUEUE_EMPTY(&stream->write_queue))
- uv__drain(stream);
- }
-}
-
-
-/**
- * We get called here from directly following a call to connect(2).
- * In order to determine if we've errored out or succeeded must call
- * getsockopt.
- */
-static void uv__stream_connect(uv_stream_t* stream) {
- int error;
- uv_connect_t* req = stream->connect_req;
- socklen_t errorsize = sizeof(int);
-
- assert(stream->type == UV_TCP || stream->type == UV_NAMED_PIPE);
- assert(req);
-
- if (stream->delayed_error) {
- /* To smooth over the differences between unixes errors that
- * were reported synchronously on the first connect can be delayed
- * until the next tick--which is now.
- */
- error = stream->delayed_error;
- stream->delayed_error = 0;
- } else {
- /* Normal situation: we need to get the socket error from the kernel. */
- assert(uv__stream_fd(stream) >= 0);
- getsockopt(uv__stream_fd(stream),
- SOL_SOCKET,
- SO_ERROR,
- &error,
- &errorsize);
- error = -error;
- }
-
- if (error == -EINPROGRESS)
- return;
-
- stream->connect_req = NULL;
- uv__req_unregister(stream->loop, req);
-
- if (error < 0 || QUEUE_EMPTY(&stream->write_queue)) {
- uv__io_stop(stream->loop, &stream->io_watcher, UV__POLLOUT);
- }
-
- if (req->cb)
- req->cb(req, error);
-
- if (uv__stream_fd(stream) == -1)
- return;
-
- if (error < 0) {
- uv__stream_flush_write_queue(stream, -ECANCELED);
- uv__write_callbacks(stream);
- }
-}
-
-
-int uv_write2(uv_write_t* req,
- uv_stream_t* stream,
- const uv_buf_t bufs[],
- unsigned int nbufs,
- uv_stream_t* send_handle,
- uv_write_cb cb) {
- int empty_queue;
-
- assert(nbufs > 0);
- assert((stream->type == UV_TCP ||
- stream->type == UV_NAMED_PIPE ||
- stream->type == UV_TTY) &&
- "uv_write (unix) does not yet support other types of streams");
-
- if (uv__stream_fd(stream) < 0)
- return -EBADF;
-
- if (send_handle) {
- if (stream->type != UV_NAMED_PIPE || !((uv_pipe_t*)stream)->ipc)
- return -EINVAL;
-
- /* XXX We abuse uv_write2() to send over UDP handles to child processes.
- * Don't call uv__stream_fd() on those handles, it's a macro that on OS X
- * evaluates to a function that operates on a uv_stream_t with a couple of
- * OS X specific fields. On other Unices it does (handle)->io_watcher.fd,
- * which works but only by accident.
- */
- if (uv__handle_fd((uv_handle_t*) send_handle) < 0)
- return -EBADF;
- }
-
- /* It's legal for write_queue_size > 0 even when the write_queue is empty;
- * it means there are error-state requests in the write_completed_queue that
- * will touch up write_queue_size later, see also uv__write_req_finish().
- * We could check that write_queue is empty instead but that implies making
- * a write() syscall when we know that the handle is in error mode.
- */
- empty_queue = (stream->write_queue_size == 0);
-
- /* Initialize the req */
- uv__req_init(stream->loop, req, UV_WRITE);
- req->cb = cb;
- req->handle = stream;
- req->error = 0;
- req->send_handle = send_handle;
- QUEUE_INIT(&req->queue);
-
- req->bufs = req->bufsml;
- if (nbufs > ARRAY_SIZE(req->bufsml))
- req->bufs = uv__malloc(nbufs * sizeof(bufs[0]));
-
- if (req->bufs == NULL)
- return -ENOMEM;
-
- memcpy(req->bufs, bufs, nbufs * sizeof(bufs[0]));
- req->nbufs = nbufs;
- req->write_index = 0;
- stream->write_queue_size += uv__count_bufs(bufs, nbufs);
-
- /* Append the request to write_queue. */
- QUEUE_INSERT_TAIL(&stream->write_queue, &req->queue);
-
- /* If the queue was empty when this function began, we should attempt to
- * do the write immediately. Otherwise start the write_watcher and wait
- * for the fd to become writable.
- */
- if (stream->connect_req) {
- /* Still connecting, do nothing. */
- }
- else if (empty_queue) {
- uv__write(stream);
- }
- else {
- /*
- * blocking streams should never have anything in the queue.
- * if this assert fires then somehow the blocking stream isn't being
- * sufficiently flushed in uv__write.
- */
- assert(!(stream->flags & UV_STREAM_BLOCKING));
- uv__io_start(stream->loop, &stream->io_watcher, UV__POLLOUT);
- uv__stream_osx_interrupt_select(stream);
- }
-
- return 0;
-}
-
-
-/* The buffers to be written must remain valid until the callback is called.
- * This is not required for the uv_buf_t array.
- */
-int uv_write(uv_write_t* req,
- uv_stream_t* handle,
- const uv_buf_t bufs[],
- unsigned int nbufs,
- uv_write_cb cb) {
- return uv_write2(req, handle, bufs, nbufs, NULL, cb);
-}
-
-
-void uv_try_write_cb(uv_write_t* req, int status) {
- /* Should not be called */
- abort();
-}
-
-
-int uv_try_write(uv_stream_t* stream,
- const uv_buf_t bufs[],
- unsigned int nbufs) {
- int r;
- int has_pollout;
- size_t written;
- size_t req_size;
- uv_write_t req;
-
- /* Connecting or already writing some data */
- if (stream->connect_req != NULL || stream->write_queue_size != 0)
- return -EAGAIN;
-
- has_pollout = uv__io_active(&stream->io_watcher, UV__POLLOUT);
-
- r = uv_write(&req, stream, bufs, nbufs, uv_try_write_cb);
- if (r != 0)
- return r;
-
- /* Remove not written bytes from write queue size */
- written = uv__count_bufs(bufs, nbufs);
- if (req.bufs != NULL)
- req_size = uv__write_req_size(&req);
- else
- req_size = 0;
- written -= req_size;
- stream->write_queue_size -= req_size;
-
- /* Unqueue request, regardless of immediateness */
- QUEUE_REMOVE(&req.queue);
- uv__req_unregister(stream->loop, &req);
- if (req.bufs != req.bufsml)
- uv__free(req.bufs);
- req.bufs = NULL;
-
- /* Do not poll for writable, if we wasn't before calling this */
- if (!has_pollout) {
- uv__io_stop(stream->loop, &stream->io_watcher, UV__POLLOUT);
- uv__stream_osx_interrupt_select(stream);
- }
-
- if (written == 0 && req_size != 0)
- return -EAGAIN;
- else
- return written;
-}
-
-
-int uv_read_start(uv_stream_t* stream,
- uv_alloc_cb alloc_cb,
- uv_read_cb read_cb) {
- assert(stream->type == UV_TCP || stream->type == UV_NAMED_PIPE ||
- stream->type == UV_TTY);
-
- if (stream->flags & UV_CLOSING)
- return -EINVAL;
-
- /* The UV_STREAM_READING flag is irrelevant of the state of the tcp - it just
- * expresses the desired state of the user.
- */
- stream->flags |= UV_STREAM_READING;
-
- /* TODO: try to do the read inline? */
- /* TODO: keep track of tcp state. If we've gotten a EOF then we should
- * not start the IO watcher.
- */
- assert(uv__stream_fd(stream) >= 0);
- assert(alloc_cb);
-
- stream->read_cb = read_cb;
- stream->alloc_cb = alloc_cb;
-
- uv__io_start(stream->loop, &stream->io_watcher, UV__POLLIN);
- uv__handle_start(stream);
- uv__stream_osx_interrupt_select(stream);
-
- return 0;
-}
-
-
-int uv_read_stop(uv_stream_t* stream) {
- if (!(stream->flags & UV_STREAM_READING))
- return 0;
-
- stream->flags &= ~UV_STREAM_READING;
- uv__io_stop(stream->loop, &stream->io_watcher, UV__POLLIN);
- if (!uv__io_active(&stream->io_watcher, UV__POLLOUT))
- uv__handle_stop(stream);
- uv__stream_osx_interrupt_select(stream);
-
- stream->read_cb = NULL;
- stream->alloc_cb = NULL;
- return 0;
-}
-
-
-int uv_is_readable(const uv_stream_t* stream) {
- return !!(stream->flags & UV_STREAM_READABLE);
-}
-
-
-int uv_is_writable(const uv_stream_t* stream) {
- return !!(stream->flags & UV_STREAM_WRITABLE);
-}
-
-
-#if defined(__APPLE__)
-int uv___stream_fd(const uv_stream_t* handle) {
- const uv__stream_select_t* s;
-
- assert(handle->type == UV_TCP ||
- handle->type == UV_TTY ||
- handle->type == UV_NAMED_PIPE);
-
- s = handle->select;
- if (s != NULL)
- return s->fd;
-
- return handle->io_watcher.fd;
-}
-#endif /* defined(__APPLE__) */
-
-
-void uv__stream_close(uv_stream_t* handle) {
- unsigned int i;
- uv__stream_queued_fds_t* queued_fds;
-
-#if defined(__APPLE__)
- /* Terminate select loop first */
- if (handle->select != NULL) {
- uv__stream_select_t* s;
-
- s = handle->select;
-
- uv_sem_post(&s->close_sem);
- uv_sem_post(&s->async_sem);
- uv__stream_osx_interrupt_select(handle);
- uv_thread_join(&s->thread);
- uv_sem_destroy(&s->close_sem);
- uv_sem_destroy(&s->async_sem);
- uv__close(s->fake_fd);
- uv__close(s->int_fd);
- uv_close((uv_handle_t*) &s->async, uv__stream_osx_cb_close);
-
- handle->select = NULL;
- }
-#endif /* defined(__APPLE__) */
-
- uv__io_close(handle->loop, &handle->io_watcher);
- uv_read_stop(handle);
- uv__handle_stop(handle);
-
- if (handle->io_watcher.fd != -1) {
- /* Don't close stdio file descriptors. Nothing good comes from it. */
- if (handle->io_watcher.fd > STDERR_FILENO)
- uv__close(handle->io_watcher.fd);
- handle->io_watcher.fd = -1;
- }
-
- if (handle->accepted_fd != -1) {
- uv__close(handle->accepted_fd);
- handle->accepted_fd = -1;
- }
-
- /* Close all queued fds */
- if (handle->queued_fds != NULL) {
- queued_fds = handle->queued_fds;
- for (i = 0; i < queued_fds->offset; i++)
- uv__close(queued_fds->fds[i]);
- uv__free(handle->queued_fds);
- handle->queued_fds = NULL;
- }
-
- assert(!uv__io_active(&handle->io_watcher, UV__POLLIN | UV__POLLOUT));
-}
-
-
-int uv_stream_set_blocking(uv_stream_t* handle, int blocking) {
- /* Don't need to check the file descriptor, uv__nonblock()
- * will fail with EBADF if it's not valid.
- */
- return uv__nonblock(uv__stream_fd(handle), !blocking);
-}