lukechilds/node - node - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Domenic Denicola	7afdba6e0b	vm, core, module: re-do vm to fix known issues As documented in #3042 and in [1], the existing vm implementation has many problems. All of these are solved by @brianmcd's [contextify][2] package. This commit uses contextify as a conceptual base and its code core to overhaul the vm module and fix its many edge cases and caveats. Functionally, this fixes #3042. In particular: - A context is now indistinguishable from the object it is based on (the "sandbox"). A context is simply a sandbox that has been marked by the vm module, via `vm.createContext`, with special internal information that allows scripts to be run inside of it. - Consequently, items added to the context from anywhere are immediately visible to all code that can access that context, both inside and outside the virtual machine. This commit also smooths over the API very slightly: - Parameter defaults are now uniformly triggered via `undefined`, per ES6 semantics and previous discussion at [3]. - Several undocumented and problematic features have been removed, e.g. the conflation of `vm.Script` with `vm` itself, and the fact that `Script` instances also had all static `vm` methods. The API is now exactly as documented (although arguably the existence of the `vm.Script` export is not yet documented, just the `Script` class itself). In terms of implementation, this replaces node_script.cc with node_contextify.cc, which is derived originally from [4] (see [5]) but has since undergone extensive modifications and iterations to expose the most useful C++ API and use the coding conventions and utilities of Node core. The bindings exposed by `process.binding('contextify')` (node_contextify.cc) replace those formerly exposed by `process.binding('evals')` (node_script.cc). They are: - ContextifyScript(code, [filename]), with methods: - runInThisContext() - runInContext(sandbox, [timeout]) - makeContext(sandbox) From this, the vm.js file builds the entire documented vm module API. node.js and module.js were modified to use this new native binding, or the vm module itself where possible. This introduces an extra line or two into the stack traces of module compilation (and thus into most stack traces), explaining the changed tests. The tests were also updated slightly, with all vm-related simple tests consolidated as test/simple/test-vm-* (some of them were formerly test/simple/test-script-*). At the same time they switched from `common.debug` to `console.error` and were updated to use `assert.throws` instead of rolling their own error-testing methods. New tests were also added, of course, demonstrating the new capabilities and fixes. [1]: http://nodejs.org/docs/v0.10.16/api/vm.html#vm_caveats [2]: https://github.com/brianmcd/contextify [3]: https://github.com/joyent/node/issues/5323#issuecomment-20250726 [4]: `bf123f3ef9/src/contextify.cc` [5]: https://gist.github.com/domenic/6068120	12 years ago
Andrew Paprocki	49e3fcd058	vm: fix race condition in watchdog cleanup Previous code was calling uv_loop_delete() directly on a running loop, which led to race condition aborts/segfaults within libuv. This change changes the watchdog thread to call uv_run() with UV_RUN_ONCE so that the call exits after either the timer times out or uv_async_send() is called from the main thread in Watchdog::Destroy(). The timer/async handles are then closed and uv_run() with UV_RUN_DEFAULT is called so that libuv has a chance to cleanup before the thread exits. The main thread meanwhile calls uv_thread_join() and then uv_loop_delete() to complete the cleanup.	12 years ago
Andrew Paprocki	c081809344	vm: add support for timeout argument Add a watchdog class which executes a timer in a separate event loop in a separate thread that will terminate v8 execution if it expires. Add timeout argument to functions in vm module which use the watchdog if a non-zero timeout is specified.	13 years ago
Fedor Indutny	9f9c333cbc	vm: accept only object as arg of .createContext() Converting strings and others to objects is very slow and essentially wrong.	13 years ago
Ben Noordhuis	fd29448be0	test: add missing copyright headers	13 years ago
Colton Baker	87286cc737	Fixed a lot of jslint errors. Fixes #1831	14 years ago
Jakub Lekstan	81cbd42cf5	Fixes the circular reference in vm modules. Fixes the circular reference problem. Closes GH-822.	14 years ago