[Webkit-unassigned] [Bug 70955] Add FakeCCThread that supports multiple in-flight tasks

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=70955





--- Comment #2 from Iain Merrick <husky at google.com>  2011-10-26 11:57:53 PST ---
For context, this is related to https://bugs.webkit.org/show_bug.cgi?id=70713

I have started working on a jitter-smoothing Vsync callback handler that looks like this:

----

class CCSmoothedCallbackClient {
public:
    virtual void onTick();
};

// Smooths out a series of irregular callbacks while maintaining the same phase.
// We assume that the callbacks arrive at roughly the specified period, but with
// random delays of up to half a cycle. We attempt to remove the delays.
// TODO(husky): We could also infer the interval from the incoming ticks.
class CCSmoothedCallback {
public:
    CCSmoothedCallback(CCSmoothedCallbackClient* client, double interval, CCThread* thread);

    void tick();
};

----

I copied FakeCCThread from the other patch, but found I wanted to be able to post more than one task at a time. For example, if interval=10, the first call to tick() should result in:

postTask(client, &onTick)
postDelayedTask(client, &onTick, 10)

And the next onTick would be scheduled when the next tick() comes in.

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