Check that the calls to Integer::New() and Date::New() succeed and bail out if
V8 returns an empty handle on stack overflow. Trying to set the empty handle as
a property on an object results in a NULL pointer dereference in release builds
and an assert in debug builds.
Fix the following error:
FSEventWrap: Aborting due to unwrap failure at ../../src/fs_event_wrap.cc:169
It's possible and legal for a handle to be closed twice. HandleWrap::Close()
deals with that by ignoring the second close. Now FSEventWrap::Close() does
Make sure the deletion event gets reported in the following scenario:
1. Watch a file.
2. The initial stat() goes okay.
3. Something deletes the watched file.
4. The second stat() fails with ENOENT.
The second stat() translates into the first 'change' event but a logic error
stopped it from getting emitted.
This addresses #4034. There are two problems happening:
1. The domain is not exited automatically when calling dispose() on it.
Then, since the domain is disposed, attempting to exit it again will do
2. The active domain is stored on process.domain. Since thrown errors
call `process.emit('uncaughtException', er)`, and the process is an
event emitter with a `.domain` member, it re-enters the domain a second
time before calling the error handler, pushing it onto the stack again.
Thus, if the handler calls `domain.dispose()`, then the domain is now on
the stack twice, and cannot be exited properly. Since the domain is
disposed, any subsequent IO will be no-op'ed, since we've declared that
this context is done and best forgotten.
The solution here is twofold:
1. In EventEmitter.emit, do not enter the domain if `this===process`.
2. Automatically exit the domain when calling `domain.dispose()`.