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April 17, 2012 22:43
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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. | |
*/ | |
#include "uv.h" | |
#include "internal.h" | |
#include <assert.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <errno.h> | |
#include <sys/sysctl.h> | |
#include <sys/types.h> | |
#include <sys/event.h> | |
#include <unistd.h> | |
#include <fcntl.h> | |
#include <time.h> | |
static void uv__fs_event(EV_P_ ev_io* w, int revents); | |
static void uv__fs_event_start(uv_fs_event_t* handle) { | |
ev_io_init(&handle->event_watcher, | |
uv__fs_event, | |
handle->fd, | |
EV_LIBUV_KQUEUE_HACK); | |
ev_io_start(handle->loop->ev, &handle->event_watcher); | |
ev_unref(handle->loop->ev); | |
} | |
static void uv__fs_event_stop(uv_fs_event_t* handle) { | |
ev_ref(handle->loop->ev); | |
ev_io_stop(handle->loop->ev, &handle->event_watcher); | |
} | |
static void uv__fs_event(EV_P_ ev_io* w, int revents) { | |
uv_fs_event_t* handle; | |
int events; | |
assert(revents == EV_LIBUV_KQUEUE_HACK); | |
handle = container_of(w, uv_fs_event_t, event_watcher); | |
if (handle->fflags & (NOTE_ATTRIB | NOTE_EXTEND)) | |
events = UV_CHANGE; | |
else | |
events = UV_RENAME; | |
handle->cb(handle, NULL, events, 0); | |
if (handle->fd == -1) | |
return; | |
/* File watcher operates in one-shot mode, re-arm it. */ | |
uv__fs_event_stop(handle); | |
uv__fs_event_start(handle); | |
} | |
/* Called by libev, don't touch. */ | |
void uv__kqueue_hack(EV_P_ int fflags, ev_io *w) { | |
uv_fs_event_t* handle; | |
handle = container_of(w, uv_fs_event_t, event_watcher); | |
handle->fflags = fflags; | |
} | |
int uv_fs_event_init(uv_loop_t* loop, | |
uv_fs_event_t* handle, | |
const char* filename, | |
uv_fs_event_cb cb, | |
int flags) { | |
int fd; | |
loop->counters.fs_event_init++; | |
/* We don't support any flags yet. */ | |
assert(!flags); | |
if (cb == NULL) { | |
uv__set_sys_error(loop, EINVAL); | |
return -1; | |
} | |
/* TODO open asynchronously - but how do we report back errors? */ | |
if ((fd = open(filename, O_RDONLY)) == -1) { | |
uv__set_sys_error(loop, errno); | |
return -1; | |
} | |
uv__handle_init(loop, (uv_handle_t*)handle, UV_FS_EVENT); | |
handle->filename = strdup(filename); | |
handle->fflags = 0; | |
handle->cb = cb; | |
handle->fd = fd; | |
uv__fs_event_start(handle); | |
return 0; | |
} | |
void uv__fs_event_destroy(uv_fs_event_t* handle) { | |
uv__fs_event_stop(handle); | |
free(handle->filename); | |
close(handle->fd); | |
handle->fd = -1; | |
} | |
<<<<<<< HEAD | |
#else /* !HAVE_KQUEUE */ | |
int uv_fs_event_init(uv_loop_t* loop, | |
uv_fs_event_t* handle, | |
const char* filename, | |
uv_fs_event_cb cb, | |
int flags) { | |
loop->counters.fs_event_init++; | |
uv__set_sys_error(loop, ENOSYS); | |
return -1; | |
} | |
void uv__fs_event_destroy(uv_fs_event_t* handle) { | |
UNREACHABLE(); | |
} | |
/* Called by libev, don't touch. */ | |
void uv__kqueue_hack(EV_P_ int fflags, ev_io *w) { | |
UNREACHABLE(); | |
} | |
#endif /* HAVE_KQUEUE */ | |
======= | |
>>>>>>> 3c41597... unix: don't conditionally compile kqueue fs watcher |
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