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Improve TickEventLoop() #46

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merged 3 commits into from
Jan 30, 2018
Merged

Improve TickEventLoop() #46

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e582066
early check for uv_loop_alive(), small refactoring
justus-hildebrand Jan 29, 2018
c5c73ff
fix nits
justus-hildebrand Jan 30, 2018
2bb42fb
Merge branch 'node_lib' into tick-event-loop-early-exit
justus-hildebrand Jan 30, 2018
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14 changes: 8 additions & 6 deletions src/node.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -4800,21 +4800,23 @@ Local<Context> NewContext(Isolate* isolate,
}

inline static bool TickEventLoop(Environment & env) {
bool more = false;
uv_run(env.event_loop(), UV_RUN_NOWAIT);

if (uv_loop_alive(env.event_loop())) {
return true;
}

v8_platform.DrainVMTasks();

more = uv_loop_alive(env.event_loop());
if (more)
return more;
if (uv_loop_alive(env.event_loop())) {
return true;
}

EmitBeforeExit(&env);

// Emit `beforeExit` if the loop became alive either after emitting
// event, or after running some callbacks.
more = uv_loop_alive(env.event_loop());
return more;
return uv_loop_alive(env.event_loop());
}

// This is where the magic happens. Creates JavaScript context and a JS Environment, then runs the uv event loop until it is no longer alive (see TickEventLoop()), then tears down Env and context and returns JS exit code.
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