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src: fix sporadic deadlock in SIGUSR1 handler #5904

Merged
merged 1 commit into from
May 10, 2016
Merged

src: fix sporadic deadlock in SIGUSR1 handler #5904

merged 1 commit into from
May 10, 2016

Commits on May 10, 2016

  1. src: fix sporadic deadlock in SIGUSR1 handler 

    Calling v8::Debug::DebugBreak() directly from the signal handler is
unsafe because said function tries to grab a mutex.  Work around that
by starting a watchdog thread that is woken up from the signal handler,
which then calls v8::Debug::DebugBreak().

Using a watchdog thread also removes the need to use atomic operations
so this commit does away with that.

Fixes: nodejs#5368
PR-URL: nodejs#5904
Reviewed-By: Anna Henningsen <anna@addaleax.net>
    @bnoordhuis
    bnoordhuis committed May 10, 2016
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