After the page does navigations, garbage collection can still happen in
the old context. This commit changes to store references to remote objects
by _pages_, instead of by _WebContents_.
Use a single synchronous IPC call to retrieve data required by early
sandbox scripts. This has two purposes:
- Optimize preload script initialization by:
- Using one synchronous IPC call to retrieve preload script,
webContentsId (more on that later), process.{platform,execPath,env}
- Lazy loading as many modules as possible.
- Fix#12316 for sandbox. @MarshallOfSound addressed the issue in
#12342, but it was still present in sandbox mode. By loading
webContentsId very early and skipping remote module at early
startup, we fix it for sandbox.
* add cause property to exception in callFunction
* update exceptionToMeta function
* add sender argument
* and cause property to return value
* update exception convert in metaToValue function
* add from and cause properties to the exception error
* unit test for remote exception
* Remove the race condition between new process creation and old process releasing remote context
Previously there was a race condition where the getId() method would return the new context ID even
though the release was for the old context. This changes it to send the "initial" context ID with
the release message to ensure there is no race.
* fetch context ID from remote in sandbox mode
* This is to enable more browser-like behavior so that users who run third-party code
will not be DOS'ed with alerts and confirms. This is already handled like this
in most major browsers so this will greatly help these developers
In addition to listening for "render-view-deleted", listen for
"ELECTRON_BROWSER_CONTEXT_RELEASE" synchronous message, which is sent by the
remote module when the page is about to be navigated.
This is required to allow child windows running in the same renderer to
correctly manage remote object references, since `render-view-deleted` is only
called when the renderer exits.
Close#9387
* Add failing spec for unhandled main process exception
* Remove unused return
* Use let/const instead of var
* Add spec for unhandled rejection in renderer process
* Prevent unhandled rejection defaul
* Use once instead of on
* Add default fulfilled/rejection handler to promise
Previously we rely on the v8util.setDestructor to dereference the remote
objects in JavaScript, however as documented in V8, it is forbidden to
call V8 APIs in object's destructor (e.g. the weak callback), and doing
so would result in crashs.
This commit removes the JavaScript setDestructor method, and avoids
doing the dereference work with V8.
