deps: upgrade libuv to 1f9bd99

1 files changed, 225 insertions, 0 deletions

diff --git a/deps/uv/src/unix/fsevents.c b/deps/uv/src/unix/fsevents.c
new file mode 100644
index 0000000000..1a7e06e46c
--- /dev/null
+++ b/deps/uv/src/unix/fsevents.c
@@ -0,0 +1,225 @@
+/* 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 <CoreServices/CoreServices.h>
+
+typedef struct uv__fsevents_event_s uv__fsevents_event_t;
+
+struct uv__fsevents_event_s {
+  int events;
+  ngx_queue_t member;
+  char path[1];
+};
+
+
+#define UV__FSEVENTS_WALK(handle, block)                                      \
+    {                                                                         \
+      ngx_queue_t* curr;                                                      \
+      ngx_queue_t split_head;                                                 \
+      uv__fsevents_event_t* event;                                            \
+      uv_mutex_lock(&(handle)->cf_mutex);                                     \
+      ngx_queue_init(&split_head);                                            \
+      if (!ngx_queue_empty(&(handle)->cf_events)) {                           \
+        ngx_queue_t* split_pos = ngx_queue_next(&(handle)->cf_events);        \
+        ngx_queue_split(&(handle)->cf_events, split_pos, &split_head);        \
+      }                                                                       \
+      uv_mutex_unlock(&(handle)->cf_mutex);                                   \
+      while (!ngx_queue_empty(&split_head)) {                                 \
+        curr = ngx_queue_head(&split_head);                                   \
+        /* Invoke callback */                                                 \
+        event = ngx_queue_data(curr, uv__fsevents_event_t, member);           \
+        ngx_queue_remove(curr);                                               \
+        /* Invoke block code, but only if handle wasn't closed */             \
+        if (((handle)->flags & (UV_CLOSING | UV_CLOSED)) == 0)                \
+          block                                                               \
+        /* Free allocated data */                                             \
+        free(event);                                                          \
+      }                                                                       \
+    }
+
+
+void uv__fsevents_cb(uv_async_t* cb, int status) {
+  uv_fs_event_t* handle;
+
+  handle = cb->data;
+
+  UV__FSEVENTS_WALK(handle, {
+    if (handle->fd != -1)
+      handle->cb(handle, event->path, event->events, 0);
+  })
+
+  if ((handle->flags & (UV_CLOSING | UV_CLOSED)) == 0 && handle->fd == -1)
+    uv__fsevents_close(handle);
+}
+
+
+void uv__fsevents_event_cb(ConstFSEventStreamRef streamRef,
+                           void* info,
+                           size_t numEvents,
+                           void* eventPaths,
+                           const FSEventStreamEventFlags eventFlags[],
+                           const FSEventStreamEventId eventIds[]) {
+  size_t i;
+  int len;
+  char** paths;
+  uv_fs_event_t* handle;
+  uv__fsevents_event_t* event;
+  ngx_queue_t add_list;
+
+  handle = info;
+  paths = eventPaths;
+  ngx_queue_init(&add_list);
+
+  for (i = 0; i < numEvents; i++) {
+    /* Ignore system events */
+    if (eventFlags[i] & (kFSEventStreamEventFlagUserDropped |
+                         kFSEventStreamEventFlagKernelDropped |
+                         kFSEventStreamEventFlagEventIdsWrapped |
+                         kFSEventStreamEventFlagHistoryDone |
+                         kFSEventStreamEventFlagMount |
+                         kFSEventStreamEventFlagUnmount)) {
+      continue;
+    }
+
+    /* TODO: Report errors */
+    len = strlen(paths[i]);
+    event = malloc(sizeof(*event) + len);
+    if (event == NULL)
+      break;
+
+    memcpy(event->path, paths[i], len + 1);
+
+    if (eventFlags[i] & kFSEventStreamEventFlagItemModified)
+      event->events = UV_CHANGE;
+    else
+      event->events = UV_RENAME;
+
+    ngx_queue_insert_tail(&add_list, &event->member);
+  }
+  uv_mutex_lock(&handle->cf_mutex);
+  ngx_queue_add(&handle->cf_events, &add_list);
+  uv_mutex_unlock(&handle->cf_mutex);
+
+  uv_async_send(handle->cf_cb);
+}
+
+
+void uv__fsevents_schedule(void* arg) {
+  uv_fs_event_t* handle;
+
+  handle = arg;
+  FSEventStreamScheduleWithRunLoop(handle->cf_eventstream,
+                                   handle->loop->cf_loop,
+                                   kCFRunLoopDefaultMode);
+  FSEventStreamStart(handle->cf_eventstream);
+  uv_sem_post(&handle->cf_sem);
+}
+
+
+int uv__fsevents_init(uv_fs_event_t* handle) {
+  FSEventStreamContext ctx;
+  FSEventStreamRef ref;
+  CFStringRef path;
+  CFArrayRef paths;
+  CFAbsoluteTime latency;
+  FSEventStreamCreateFlags flags;
+
+  /* Initialize context */
+  ctx.version = 0;
+  ctx.info = handle;
+  ctx.retain = NULL;
+  ctx.release = NULL;
+  ctx.copyDescription = NULL;
+
+  /* Initialize paths array */
+  path = CFStringCreateWithCString(NULL,
+                                   handle->filename,
+                                   CFStringGetSystemEncoding());
+  paths = CFArrayCreate(NULL, (const void**)&path, 1, NULL);
+
+  latency = 0.15;
+
+  /* Set appropriate flags */
+  flags = kFSEventStreamCreateFlagFileEvents;
+
+  ref = FSEventStreamCreate(NULL,
+                            &uv__fsevents_event_cb,
+                            &ctx,
+                            paths,
+                            kFSEventStreamEventIdSinceNow,
+                            latency,
+                            flags);
+  handle->cf_eventstream = ref;
+
+  /*
+   * Events will occur in other thread.
+   * Initialize callback for getting them back into event loop's thread
+   */
+  handle->cf_cb = malloc(sizeof(*handle->cf_cb));
+  if (handle->cf_cb == NULL)
+    return uv__set_sys_error(handle->loop, ENOMEM);
+
+  handle->cf_cb->data = handle;
+  uv_async_init(handle->loop, handle->cf_cb, uv__fsevents_cb);
+  handle->cf_cb->flags |= UV__HANDLE_INTERNAL;
+  uv_unref((uv_handle_t*) handle->cf_cb);
+
+  uv_mutex_init(&handle->cf_mutex);
+  uv_sem_init(&handle->cf_sem, 0);
+  ngx_queue_init(&handle->cf_events);
+
+  uv__cf_loop_signal(handle->loop, uv__fsevents_schedule, handle);
+
+  return 0;
+}
+
+
+int uv__fsevents_close(uv_fs_event_t* handle) {
+  if (handle->cf_eventstream == NULL)
+    return -1;
+
+  /* Ensure that event stream was scheduled */
+  uv_sem_wait(&handle->cf_sem);
+
+  /* Stop emitting events */
+  FSEventStreamStop(handle->cf_eventstream);
+
+  /* Release stream */
+  FSEventStreamInvalidate(handle->cf_eventstream);
+  FSEventStreamRelease(handle->cf_eventstream);
+  handle->cf_eventstream = NULL;
+
+  uv_close((uv_handle_t*) handle->cf_cb, (uv_close_cb) free);
+
+  /* Free data in queue */
+  UV__FSEVENTS_WALK(handle, {
+    /* NOP */
+  })
+
+  uv_mutex_destroy(&handle->cf_mutex);
+  uv_sem_destroy(&handle->cf_sem);
+
+  return 0;
+}