Blame src/unix/sunos.c

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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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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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#include "uv.h"
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#include "internal.h"
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <errno.h>
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#ifndef SUNOS_NO_IFADDRS
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# include <ifaddrs.h>
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#endif
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_arp.h>
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#include <sys/sockio.h>
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#include <sys/loadavg.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <kstat.h>
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#include <fcntl.h>
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#include <sys/port.h>
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#include <port.h>
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#define PORT_FIRED 0x69
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#define PORT_UNUSED 0x0
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#define PORT_LOADED 0x99
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#define PORT_DELETED -1
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#if (!defined(_LP64)) && (_FILE_OFFSET_BITS - 0 == 64)
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#define PROCFS_FILE_OFFSET_BITS_HACK 1
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#undef _FILE_OFFSET_BITS
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#else
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#define PROCFS_FILE_OFFSET_BITS_HACK 0
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#endif
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#include <procfs.h>
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#if (PROCFS_FILE_OFFSET_BITS_HACK - 0 == 1)
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#define _FILE_OFFSET_BITS 64
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#endif
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int uv__platform_loop_init(uv_loop_t* loop) {
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  int err;
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  int fd;
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  loop->fs_fd = -1;
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  loop->backend_fd = -1;
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  fd = port_create();
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  if (fd == -1)
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    return UV__ERR(errno);
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  err = uv__cloexec(fd, 1);
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  if (err) {
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    uv__close(fd);
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    return err;
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  }
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  loop->backend_fd = fd;
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  return 0;
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}
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void uv__platform_loop_delete(uv_loop_t* loop) {
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  if (loop->fs_fd != -1) {
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    uv__close(loop->fs_fd);
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    loop->fs_fd = -1;
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  }
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  if (loop->backend_fd != -1) {
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    uv__close(loop->backend_fd);
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    loop->backend_fd = -1;
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  }
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}
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int uv__io_fork(uv_loop_t* loop) {
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#if defined(PORT_SOURCE_FILE)
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  if (loop->fs_fd != -1) {
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    /* stop the watcher before we blow away its fileno */
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    uv__io_stop(loop, &loop->fs_event_watcher, POLLIN);
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  }
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#endif
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  uv__platform_loop_delete(loop);
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  return uv__platform_loop_init(loop);
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}
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void uv__platform_invalidate_fd(uv_loop_t* loop, int fd) {
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  struct port_event* events;
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  uintptr_t i;
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  uintptr_t nfds;
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  assert(loop->watchers != NULL);
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  assert(fd >= 0);
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  events = (struct port_event*) loop->watchers[loop->nwatchers];
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  nfds = (uintptr_t) loop->watchers[loop->nwatchers + 1];
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  if (events == NULL)
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    return;
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  /* Invalidate events with same file descriptor */
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  for (i = 0; i < nfds; i++)
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    if ((int) events[i].portev_object == fd)
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      events[i].portev_object = -1;
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}
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int uv__io_check_fd(uv_loop_t* loop, int fd) {
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  if (port_associate(loop->backend_fd, PORT_SOURCE_FD, fd, POLLIN, 0))
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    return UV__ERR(errno);
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  if (port_dissociate(loop->backend_fd, PORT_SOURCE_FD, fd)) {
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    perror("(libuv) port_dissociate()");
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    abort();
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  }
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  return 0;
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}
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void uv__io_poll(uv_loop_t* loop, int timeout) {
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  struct port_event events[1024];
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  struct port_event* pe;
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  struct timespec spec;
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  QUEUE* q;
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  uv__io_t* w;
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  sigset_t* pset;
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  sigset_t set;
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  uint64_t base;
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  uint64_t diff;
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  unsigned int nfds;
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  unsigned int i;
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  int saved_errno;
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  int have_signals;
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  int nevents;
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  int count;
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  int err;
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  int fd;
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  if (loop->nfds == 0) {
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    assert(QUEUE_EMPTY(&loop->watcher_queue));
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    return;
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  }
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  while (!QUEUE_EMPTY(&loop->watcher_queue)) {
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    q = QUEUE_HEAD(&loop->watcher_queue);
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    QUEUE_REMOVE(q);
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    QUEUE_INIT(q);
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    w = QUEUE_DATA(q, uv__io_t, watcher_queue);
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    assert(w->pevents != 0);
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    if (port_associate(loop->backend_fd,
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                       PORT_SOURCE_FD,
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                       w->fd,
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                       w->pevents,
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                       0)) {
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      perror("(libuv) port_associate()");
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      abort();
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    }
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    w->events = w->pevents;
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  }
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  pset = NULL;
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  if (loop->flags & UV_LOOP_BLOCK_SIGPROF) {
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    pset = &set;
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    sigemptyset(pset);
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    sigaddset(pset, SIGPROF);
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  }
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  assert(timeout >= -1);
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  base = loop->time;
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  count = 48; /* Benchmarks suggest this gives the best throughput. */
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  for (;;) {
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    if (timeout != -1) {
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      spec.tv_sec = timeout / 1000;
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      spec.tv_nsec = (timeout % 1000) * 1000000;
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    }
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    /* Work around a kernel bug where nfds is not updated. */
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    events[0].portev_source = 0;
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    nfds = 1;
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    saved_errno = 0;
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    if (pset != NULL)
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      pthread_sigmask(SIG_BLOCK, pset, NULL);
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    err = port_getn(loop->backend_fd,
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                    events,
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                    ARRAY_SIZE(events),
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                    &nfds,
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                    timeout == -1 ? NULL : &spec);
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    if (pset != NULL)
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      pthread_sigmask(SIG_UNBLOCK, pset, NULL);
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    if (err) {
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      /* Work around another kernel bug: port_getn() may return events even
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       * on error.
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       */
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      if (errno == EINTR || errno == ETIME) {
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        saved_errno = errno;
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      } else {
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        perror("(libuv) port_getn()");
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        abort();
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      }
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    }
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    /* Update loop->time unconditionally. It's tempting to skip the update when
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     * timeout == 0 (i.e. non-blocking poll) but there is no guarantee that the
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     * operating system didn't reschedule our process while in the syscall.
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     */
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    SAVE_ERRNO(uv__update_time(loop));
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    if (events[0].portev_source == 0) {
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      if (timeout == 0)
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        return;
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      if (timeout == -1)
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        continue;
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      goto update_timeout;
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    }
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    if (nfds == 0) {
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      assert(timeout != -1);
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      return;
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    }
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    have_signals = 0;
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    nevents = 0;
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    assert(loop->watchers != NULL);
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    loop->watchers[loop->nwatchers] = (void*) events;
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    loop->watchers[loop->nwatchers + 1] = (void*) (uintptr_t) nfds;
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    for (i = 0; i < nfds; i++) {
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      pe = events + i;
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      fd = pe->portev_object;
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      /* Skip invalidated events, see uv__platform_invalidate_fd */
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      if (fd == -1)
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        continue;
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      assert(fd >= 0);
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      assert((unsigned) fd < loop->nwatchers);
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      w = loop->watchers[fd];
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      /* File descriptor that we've stopped watching, ignore. */
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      if (w == NULL)
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        continue;
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      /* Run signal watchers last.  This also affects child process watchers
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       * because those are implemented in terms of signal watchers.
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       */
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      if (w == &loop->signal_io_watcher)
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        have_signals = 1;
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      else
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        w->cb(loop, w, pe->portev_events);
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      nevents++;
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      if (w != loop->watchers[fd])
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        continue;  /* Disabled by callback. */
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      /* Events Ports operates in oneshot mode, rearm timer on next run. */
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      if (w->pevents != 0 && QUEUE_EMPTY(&w->watcher_queue))
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        QUEUE_INSERT_TAIL(&loop->watcher_queue, &w->watcher_queue);
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    }
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    if (have_signals != 0)
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      loop->signal_io_watcher.cb(loop, &loop->signal_io_watcher, POLLIN);
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    loop->watchers[loop->nwatchers] = NULL;
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    loop->watchers[loop->nwatchers + 1] = NULL;
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    if (have_signals != 0)
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      return;  /* Event loop should cycle now so don't poll again. */
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    if (nevents != 0) {
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      if (nfds == ARRAY_SIZE(events) && --count != 0) {
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        /* Poll for more events but don't block this time. */
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        timeout = 0;
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        continue;
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      }
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      return;
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    }
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    if (saved_errno == ETIME) {
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      assert(timeout != -1);
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      return;
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    }
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    if (timeout == 0)
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      return;
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    if (timeout == -1)
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      continue;
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update_timeout:
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    assert(timeout > 0);
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    diff = loop->time - base;
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    if (diff >= (uint64_t) timeout)
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      return;
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    timeout -= diff;
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  }
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}
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uint64_t uv__hrtime(uv_clocktype_t type) {
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  return gethrtime();
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}
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/*
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 * We could use a static buffer for the path manipulations that we need outside
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 * of the function, but this function could be called by multiple consumers and
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 * we don't want to potentially create a race condition in the use of snprintf.
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 */
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int uv_exepath(char* buffer, size_t* size) {
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  ssize_t res;
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  char buf[128];
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  if (buffer == NULL || size == NULL || *size == 0)
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    return UV_EINVAL;
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  snprintf(buf, sizeof(buf), "/proc/%lu/path/a.out", (unsigned long) getpid());
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  res = *size - 1;
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  if (res > 0)
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    res = readlink(buf, buffer, res);
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  if (res == -1)
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    return UV__ERR(errno);
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  buffer[res] = '\0';
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  *size = res;
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  return 0;
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}
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uint64_t uv_get_free_memory(void) {
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  return (uint64_t) sysconf(_SC_PAGESIZE) * sysconf(_SC_AVPHYS_PAGES);
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}
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uint64_t uv_get_total_memory(void) {
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  return (uint64_t) sysconf(_SC_PAGESIZE) * sysconf(_SC_PHYS_PAGES);
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}
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uint64_t uv_get_constrained_memory(void) {
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  return 0;  /* Memory constraints are unknown. */
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}
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void uv_loadavg(double avg[3]) {
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  (void) getloadavg(avg, 3);
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}
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#if defined(PORT_SOURCE_FILE)
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static int uv__fs_event_rearm(uv_fs_event_t *handle) {
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  if (handle->fd == -1)
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    return UV_EBADF;
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  if (port_associate(handle->loop->fs_fd,
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                     PORT_SOURCE_FILE,
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                     (uintptr_t) &handle->fo,
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                     FILE_ATTRIB | FILE_MODIFIED,
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                     handle) == -1) {
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    return UV__ERR(errno);
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  }
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  handle->fd = PORT_LOADED;
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  return 0;
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}
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static void uv__fs_event_read(uv_loop_t* loop,
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                              uv__io_t* w,
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                              unsigned int revents) {
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  uv_fs_event_t *handle = NULL;
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  timespec_t timeout;
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  port_event_t pe;
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  int events;
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  int r;
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  (void) w;
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  (void) revents;
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  do {
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    uint_t n = 1;
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    /*
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     * Note that our use of port_getn() here (and not port_get()) is deliberate:
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     * there is a bug in event ports (Sun bug 6456558) whereby a zeroed timeout
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     * causes port_get() to return success instead of ETIME when there aren't
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     * actually any events (!); by using port_getn() in lieu of port_get(),
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     * we can at least workaround the bug by checking for zero returned events
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     * and treating it as we would ETIME.
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     */
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    do {
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      memset(&timeout, 0, sizeof timeout);
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      r = port_getn(loop->fs_fd, &pe, 1, &n, &timeout);
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    }
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    while (r == -1 && errno == EINTR);
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    if ((r == -1 && errno == ETIME) || n == 0)
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      break;
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    handle = (uv_fs_event_t*) pe.portev_user;
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    assert((r == 0) && "unexpected port_get() error");
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    events = 0;
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    if (pe.portev_events & (FILE_ATTRIB | FILE_MODIFIED))
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      events |= UV_CHANGE;
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    if (pe.portev_events & ~(FILE_ATTRIB | FILE_MODIFIED))
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      events |= UV_RENAME;
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    assert(events != 0);
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    handle->fd = PORT_FIRED;
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    handle->cb(handle, NULL, events, 0);
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    if (handle->fd != PORT_DELETED) {
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      r = uv__fs_event_rearm(handle);
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      if (r != 0)
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        handle->cb(handle, NULL, 0, r);
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    }
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  }
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  while (handle->fd != PORT_DELETED);
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}
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int uv_fs_event_init(uv_loop_t* loop, uv_fs_event_t* handle) {
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  uv__handle_init(loop, (uv_handle_t*)handle, UV_FS_EVENT);
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  return 0;
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}
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int uv_fs_event_start(uv_fs_event_t* handle,
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                      uv_fs_event_cb cb,
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                      const char* path,
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                      unsigned int flags) {
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  int portfd;
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  int first_run;
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  int err;
Packit b5b901
Packit b5b901
  if (uv__is_active(handle))
Packit b5b901
    return UV_EINVAL;
Packit b5b901
Packit b5b901
  first_run = 0;
Packit b5b901
  if (handle->loop->fs_fd == -1) {
Packit b5b901
    portfd = port_create();
Packit b5b901
    if (portfd == -1)
Packit b5b901
      return UV__ERR(errno);
Packit b5b901
    handle->loop->fs_fd = portfd;
Packit b5b901
    first_run = 1;
Packit b5b901
  }
Packit b5b901
Packit b5b901
  uv__handle_start(handle);
Packit b5b901
  handle->path = uv__strdup(path);
Packit b5b901
  handle->fd = PORT_UNUSED;
Packit b5b901
  handle->cb = cb;
Packit b5b901
Packit b5b901
  memset(&handle->fo, 0, sizeof handle->fo);
Packit b5b901
  handle->fo.fo_name = handle->path;
Packit b5b901
  err = uv__fs_event_rearm(handle);
Packit b5b901
  if (err != 0) {
Packit b5b901
    uv_fs_event_stop(handle);
Packit b5b901
    return err;
Packit b5b901
  }
Packit b5b901
Packit b5b901
  if (first_run) {
Packit b5b901
    uv__io_init(&handle->loop->fs_event_watcher, uv__fs_event_read, portfd);
Packit b5b901
    uv__io_start(handle->loop, &handle->loop->fs_event_watcher, POLLIN);
Packit b5b901
  }
Packit b5b901
Packit b5b901
  return 0;
Packit b5b901
}
Packit b5b901
Packit b5b901
Packit b5b901
int uv_fs_event_stop(uv_fs_event_t* handle) {
Packit b5b901
  if (!uv__is_active(handle))
Packit b5b901
    return 0;
Packit b5b901
Packit b5b901
  if (handle->fd == PORT_FIRED || handle->fd == PORT_LOADED) {
Packit b5b901
    port_dissociate(handle->loop->fs_fd,
Packit b5b901
                    PORT_SOURCE_FILE,
Packit b5b901
                    (uintptr_t) &handle->fo);
Packit b5b901
  }
Packit b5b901
Packit b5b901
  handle->fd = PORT_DELETED;
Packit b5b901
  uv__free(handle->path);
Packit b5b901
  handle->path = NULL;
Packit b5b901
  handle->fo.fo_name = NULL;
Packit b5b901
  uv__handle_stop(handle);
Packit b5b901
Packit b5b901
  return 0;
Packit b5b901
}
Packit b5b901
Packit b5b901
void uv__fs_event_close(uv_fs_event_t* handle) {
Packit b5b901
  uv_fs_event_stop(handle);
Packit b5b901
}
Packit b5b901
Packit b5b901
#else /* !defined(PORT_SOURCE_FILE) */
Packit b5b901
Packit b5b901
int uv_fs_event_init(uv_loop_t* loop, uv_fs_event_t* handle) {
Packit b5b901
  return UV_ENOSYS;
Packit b5b901
}
Packit b5b901
Packit b5b901
Packit b5b901
int uv_fs_event_start(uv_fs_event_t* handle,
Packit b5b901
                      uv_fs_event_cb cb,
Packit b5b901
                      const char* filename,
Packit b5b901
                      unsigned int flags) {
Packit b5b901
  return UV_ENOSYS;
Packit b5b901
}
Packit b5b901
Packit b5b901
Packit b5b901
int uv_fs_event_stop(uv_fs_event_t* handle) {
Packit b5b901
  return UV_ENOSYS;
Packit b5b901
}
Packit b5b901
Packit b5b901
Packit b5b901
void uv__fs_event_close(uv_fs_event_t* handle) {
Packit b5b901
  UNREACHABLE();
Packit b5b901
}
Packit b5b901
Packit b5b901
#endif /* defined(PORT_SOURCE_FILE) */
Packit b5b901
Packit b5b901
Packit b5b901
int uv_resident_set_memory(size_t* rss) {
Packit b5b901
  psinfo_t psinfo;
Packit b5b901
  int err;
Packit b5b901
  int fd;
Packit b5b901
Packit b5b901
  fd = open("/proc/self/psinfo", O_RDONLY);
Packit b5b901
  if (fd == -1)
Packit b5b901
    return UV__ERR(errno);
Packit b5b901
Packit b5b901
  /* FIXME(bnoordhuis) Handle EINTR. */
Packit b5b901
  err = UV_EINVAL;
Packit b5b901
  if (read(fd, &psinfo, sizeof(psinfo)) == sizeof(psinfo)) {
Packit b5b901
    *rss = (size_t)psinfo.pr_rssize * 1024;
Packit b5b901
    err = 0;
Packit b5b901
  }
Packit b5b901
  uv__close(fd);
Packit b5b901
Packit b5b901
  return err;
Packit b5b901
}
Packit b5b901
Packit b5b901
Packit b5b901
int uv_uptime(double* uptime) {
Packit b5b901
  kstat_ctl_t   *kc;
Packit b5b901
  kstat_t       *ksp;
Packit b5b901
  kstat_named_t *knp;
Packit b5b901
Packit b5b901
  long hz = sysconf(_SC_CLK_TCK);
Packit b5b901
Packit b5b901
  kc = kstat_open();
Packit b5b901
  if (kc == NULL)
Packit b5b901
    return UV_EPERM;
Packit b5b901
Packit b5b901
  ksp = kstat_lookup(kc, (char*) "unix", 0, (char*) "system_misc");
Packit b5b901
  if (kstat_read(kc, ksp, NULL) == -1) {
Packit b5b901
    *uptime = -1;
Packit b5b901
  } else {
Packit b5b901
    knp = (kstat_named_t*)  kstat_data_lookup(ksp, (char*) "clk_intr");
Packit b5b901
    *uptime = knp->value.ul / hz;
Packit b5b901
  }
Packit b5b901
  kstat_close(kc);
Packit b5b901
Packit b5b901
  return 0;
Packit b5b901
}
Packit b5b901
Packit b5b901
Packit b5b901
int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
Packit b5b901
  int           lookup_instance;
Packit b5b901
  kstat_ctl_t   *kc;
Packit b5b901
  kstat_t       *ksp;
Packit b5b901
  kstat_named_t *knp;
Packit b5b901
  uv_cpu_info_t* cpu_info;
Packit b5b901
Packit b5b901
  kc = kstat_open();
Packit b5b901
  if (kc == NULL)
Packit b5b901
    return UV_EPERM;
Packit b5b901
Packit b5b901
  /* Get count of cpus */
Packit b5b901
  lookup_instance = 0;
Packit b5b901
  while ((ksp = kstat_lookup(kc, (char*) "cpu_info", lookup_instance, NULL))) {
Packit b5b901
    lookup_instance++;
Packit b5b901
  }
Packit b5b901
Packit b5b901
  *cpu_infos = uv__malloc(lookup_instance * sizeof(**cpu_infos));
Packit b5b901
  if (!(*cpu_infos)) {
Packit b5b901
    kstat_close(kc);
Packit b5b901
    return UV_ENOMEM;
Packit b5b901
  }
Packit b5b901
Packit b5b901
  *count = lookup_instance;
Packit b5b901
Packit b5b901
  cpu_info = *cpu_infos;
Packit b5b901
  lookup_instance = 0;
Packit b5b901
  while ((ksp = kstat_lookup(kc, (char*) "cpu_info", lookup_instance, NULL))) {
Packit b5b901
    if (kstat_read(kc, ksp, NULL) == -1) {
Packit b5b901
      cpu_info->speed = 0;
Packit b5b901
      cpu_info->model = NULL;
Packit b5b901
    } else {
Packit b5b901
      knp = kstat_data_lookup(ksp, (char*) "clock_MHz");
Packit b5b901
      assert(knp->data_type == KSTAT_DATA_INT32 ||
Packit b5b901
             knp->data_type == KSTAT_DATA_INT64);
Packit b5b901
      cpu_info->speed = (knp->data_type == KSTAT_DATA_INT32) ? knp->value.i32
Packit b5b901
                                                             : knp->value.i64;
Packit b5b901
Packit b5b901
      knp = kstat_data_lookup(ksp, (char*) "brand");
Packit b5b901
      assert(knp->data_type == KSTAT_DATA_STRING);
Packit b5b901
      cpu_info->model = uv__strdup(KSTAT_NAMED_STR_PTR(knp));
Packit b5b901
    }
Packit b5b901
Packit b5b901
    lookup_instance++;
Packit b5b901
    cpu_info++;
Packit b5b901
  }
Packit b5b901
Packit b5b901
  cpu_info = *cpu_infos;
Packit b5b901
  lookup_instance = 0;
Packit b5b901
  for (;;) {
Packit b5b901
    ksp = kstat_lookup(kc, (char*) "cpu", lookup_instance, (char*) "sys");
Packit b5b901
Packit b5b901
    if (ksp == NULL)
Packit b5b901
      break;
Packit b5b901
Packit b5b901
    if (kstat_read(kc, ksp, NULL) == -1) {
Packit b5b901
      cpu_info->cpu_times.user = 0;
Packit b5b901
      cpu_info->cpu_times.nice = 0;
Packit b5b901
      cpu_info->cpu_times.sys = 0;
Packit b5b901
      cpu_info->cpu_times.idle = 0;
Packit b5b901
      cpu_info->cpu_times.irq = 0;
Packit b5b901
    } else {
Packit b5b901
      knp = kstat_data_lookup(ksp, (char*) "cpu_ticks_user");
Packit b5b901
      assert(knp->data_type == KSTAT_DATA_UINT64);
Packit b5b901
      cpu_info->cpu_times.user = knp->value.ui64;
Packit b5b901
Packit b5b901
      knp = kstat_data_lookup(ksp, (char*) "cpu_ticks_kernel");
Packit b5b901
      assert(knp->data_type == KSTAT_DATA_UINT64);
Packit b5b901
      cpu_info->cpu_times.sys = knp->value.ui64;
Packit b5b901
Packit b5b901
      knp = kstat_data_lookup(ksp, (char*) "cpu_ticks_idle");
Packit b5b901
      assert(knp->data_type == KSTAT_DATA_UINT64);
Packit b5b901
      cpu_info->cpu_times.idle = knp->value.ui64;
Packit b5b901
Packit b5b901
      knp = kstat_data_lookup(ksp, (char*) "intr");
Packit b5b901
      assert(knp->data_type == KSTAT_DATA_UINT64);
Packit b5b901
      cpu_info->cpu_times.irq = knp->value.ui64;
Packit b5b901
      cpu_info->cpu_times.nice = 0;
Packit b5b901
    }
Packit b5b901
Packit b5b901
    lookup_instance++;
Packit b5b901
    cpu_info++;
Packit b5b901
  }
Packit b5b901
Packit b5b901
  kstat_close(kc);
Packit b5b901
Packit b5b901
  return 0;
Packit b5b901
}
Packit b5b901
Packit b5b901
Packit b5b901
#ifdef SUNOS_NO_IFADDRS
Packit b5b901
int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
Packit Service e08953
  *count = 0;
Packit Service e08953
  *addresses = NULL;
Packit b5b901
  return UV_ENOSYS;
Packit b5b901
}
Packit b5b901
#else  /* SUNOS_NO_IFADDRS */
Packit b5b901
/*
Packit b5b901
 * Inspired By:
Packit b5b901
 * https://blogs.oracle.com/paulie/entry/retrieving_mac_address_in_solaris
Packit b5b901
 * http://www.pauliesworld.org/project/getmac.c
Packit b5b901
 */
Packit b5b901
static int uv__set_phys_addr(uv_interface_address_t* address,
Packit b5b901
                             struct ifaddrs* ent) {
Packit b5b901
Packit b5b901
  struct sockaddr_dl* sa_addr;
Packit b5b901
  int sockfd;
Packit Service e08953
  size_t i;
Packit b5b901
  struct arpreq arpreq;
Packit b5b901
Packit b5b901
  /* This appears to only work as root */
Packit b5b901
  sa_addr = (struct sockaddr_dl*)(ent->ifa_addr);
Packit b5b901
  memcpy(address->phys_addr, LLADDR(sa_addr), sizeof(address->phys_addr));
Packit b5b901
  for (i = 0; i < sizeof(address->phys_addr); i++) {
Packit Service e08953
    /* Check that all bytes of phys_addr are zero. */
Packit b5b901
    if (address->phys_addr[i] != 0)
Packit b5b901
      return 0;
Packit b5b901
  }
Packit b5b901
  memset(&arpreq, 0, sizeof(arpreq));
Packit b5b901
  if (address->address.address4.sin_family == AF_INET) {
Packit b5b901
    struct sockaddr_in* sin = ((struct sockaddr_in*)&arpreq.arp_pa);
Packit b5b901
    sin->sin_addr.s_addr = address->address.address4.sin_addr.s_addr;
Packit b5b901
  } else if (address->address.address4.sin_family == AF_INET6) {
Packit b5b901
    struct sockaddr_in6* sin = ((struct sockaddr_in6*)&arpreq.arp_pa);
Packit b5b901
    memcpy(sin->sin6_addr.s6_addr,
Packit b5b901
           address->address.address6.sin6_addr.s6_addr,
Packit b5b901
           sizeof(address->address.address6.sin6_addr.s6_addr));
Packit b5b901
  } else {
Packit b5b901
    return 0;
Packit b5b901
  }
Packit b5b901
Packit b5b901
  sockfd = socket(AF_INET, SOCK_DGRAM, 0);
Packit b5b901
  if (sockfd < 0)
Packit b5b901
    return UV__ERR(errno);
Packit b5b901
Packit b5b901
  if (ioctl(sockfd, SIOCGARP, (char*)&arpreq) == -1) {
Packit b5b901
    uv__close(sockfd);
Packit b5b901
    return UV__ERR(errno);
Packit b5b901
  }
Packit b5b901
  memcpy(address->phys_addr, arpreq.arp_ha.sa_data, sizeof(address->phys_addr));
Packit b5b901
  uv__close(sockfd);
Packit b5b901
  return 0;
Packit b5b901
}
Packit b5b901
Packit b5b901
Packit b5b901
static int uv__ifaddr_exclude(struct ifaddrs *ent) {
Packit b5b901
  if (!((ent->ifa_flags & IFF_UP) && (ent->ifa_flags & IFF_RUNNING)))
Packit b5b901
    return 1;
Packit b5b901
  if (ent->ifa_addr == NULL)
Packit b5b901
    return 1;
Packit b5b901
  if (ent->ifa_addr->sa_family != AF_INET &&
Packit b5b901
      ent->ifa_addr->sa_family != AF_INET6)
Packit b5b901
    return 1;
Packit b5b901
  return 0;
Packit b5b901
}
Packit b5b901
Packit b5b901
int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
Packit b5b901
  uv_interface_address_t* address;
Packit b5b901
  struct ifaddrs* addrs;
Packit b5b901
  struct ifaddrs* ent;
Packit b5b901
Packit Service e08953
  *count = 0;
Packit Service e08953
  *addresses = NULL;
Packit Service e08953
Packit b5b901
  if (getifaddrs(&addrs))
Packit b5b901
    return UV__ERR(errno);
Packit b5b901
Packit b5b901
  /* Count the number of interfaces */
Packit b5b901
  for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
Packit b5b901
    if (uv__ifaddr_exclude(ent))
Packit b5b901
      continue;
Packit b5b901
    (*count)++;
Packit b5b901
  }
Packit b5b901
Packit Service e08953
  if (*count == 0) {
Packit Service e08953
    freeifaddrs(addrs);
Packit Service e08953
    return 0;
Packit Service e08953
  }
Packit Service e08953
Packit b5b901
  *addresses = uv__malloc(*count * sizeof(**addresses));
Packit b5b901
  if (!(*addresses)) {
Packit b5b901
    freeifaddrs(addrs);
Packit b5b901
    return UV_ENOMEM;
Packit b5b901
  }
Packit b5b901
Packit b5b901
  address = *addresses;
Packit b5b901
Packit b5b901
  for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
Packit b5b901
    if (uv__ifaddr_exclude(ent))
Packit b5b901
      continue;
Packit b5b901
Packit b5b901
    address->name = uv__strdup(ent->ifa_name);
Packit b5b901
Packit b5b901
    if (ent->ifa_addr->sa_family == AF_INET6) {
Packit b5b901
      address->address.address6 = *((struct sockaddr_in6*) ent->ifa_addr);
Packit b5b901
    } else {
Packit b5b901
      address->address.address4 = *((struct sockaddr_in*) ent->ifa_addr);
Packit b5b901
    }
Packit b5b901
Packit b5b901
    if (ent->ifa_netmask->sa_family == AF_INET6) {
Packit b5b901
      address->netmask.netmask6 = *((struct sockaddr_in6*) ent->ifa_netmask);
Packit b5b901
    } else {
Packit b5b901
      address->netmask.netmask4 = *((struct sockaddr_in*) ent->ifa_netmask);
Packit b5b901
    }
Packit b5b901
Packit b5b901
    address->is_internal = !!((ent->ifa_flags & IFF_PRIVATE) ||
Packit b5b901
                           (ent->ifa_flags & IFF_LOOPBACK));
Packit b5b901
Packit b5b901
    uv__set_phys_addr(address, ent);
Packit b5b901
    address++;
Packit b5b901
  }
Packit b5b901
Packit b5b901
  freeifaddrs(addrs);
Packit b5b901
Packit b5b901
  return 0;
Packit b5b901
}
Packit b5b901
#endif  /* SUNOS_NO_IFADDRS */
Packit b5b901
Packit b5b901
void uv_free_interface_addresses(uv_interface_address_t* addresses,
Packit b5b901
  int count) {
Packit b5b901
  int i;
Packit b5b901
Packit b5b901
  for (i = 0; i < count; i++) {
Packit b5b901
    uv__free(addresses[i].name);
Packit b5b901
  }
Packit b5b901
Packit b5b901
  uv__free(addresses);
Packit b5b901
}