[Webkit-unassigned] [Bug 41765] JavaScriptCore C API should have a notification mechanism to facilitate long-running scripts

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=41765


Andy Wingo <wingo at igalia.com> changed:

           What    |Removed                     |Added
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                 CC|                            |wingo at igalia.com




--- Comment #3 from Andy Wingo <wingo at igalia.com>  2012-03-21 09:15:37 PST ---
FWIW what V8 does is to insert stack-bounds checks at function calls and backwards branches.   The stack limit is read from the heap.  If the stack pointer is beyond the limit, the code executes some trap handler.  The code is in a known safe place, suitable to throw exceptions or do OSR.  Timeouts and asynchronous interrupts set various state flags, then reset the stack limit so that the next limit check invokes the handler.

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