OOJSFrameCallbacks.h File Reference

import "OOJavaScriptEngine.h"

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Functions
void	InitOOJSFrameCallbacks (JSContext *context, JSObject *global)
void	OOJSFrameCallbacksInvoke (OOTimeDelta delta)
void	OOJSFrameCallbacksRemoveAll (void)

Function Documentation

InitOOJSFrameCallbacks()

void InitOOJSFrameCallbacks	(	JSContext *	context,
		JSObject *	global )

Definition at line 117 of file OOJSFrameCallbacks.m.

{
    JS_DefineFunction(context, global, "addFrameCallback", GlobalAddFrameCallback, 1, OOJS_METHOD_READONLY);
    JS_DefineFunction(context, global, "removeFrameCallback", GlobalRemoveFrameCallback, 1, OOJS_METHOD_READONLY);
    JS_DefineFunction(context, global, "isValidFrameCallback", GlobalIsValidFrameCallback, 1, OOJS_METHOD_READONLY);
    
#if DEBUG_FCB_SIMPLE_TRACKING_IDS
    sNextID = 1;
#else
    // Set randomish initial ID to catch bad habits.
    sNextID =  [[NSDate date] timeIntervalSinceReferenceDate];
#endif
}

References GlobalAddFrameCallback(), GlobalIsValidFrameCallback(), GlobalRemoveFrameCallback(), OOJS_METHOD_READONLY, and sNextID.

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OOJSFrameCallbacksInvoke()

void OOJSFrameCallbacksInvoke

(

OOTimeDelta

delta

)

Definition at line 132 of file OOJSFrameCallbacks.m.

{
    NSCAssert1(!sRunning, @"%s cannot be called while frame callbacks are running.", __PRETTY_FUNCTION__);
    
    if (sCount != 0)
    {
        const OOTimeDelta   delta = inDeltaT * [UNIVERSE timeAccelerationFactor];
        JSContext           *context = OOJSAcquireContext();
        jsval               deltaVal, result;
        NSUInteger          i;
        
        if (EXPECT(JS_NewNumberValue(context, delta, &deltaVal)))
        {
            // Block mutations.
            sRunning = YES;
            
            /*
                The watchdog timer only fires once per second in deployment builds,
                but in testrelease builds at least we can keep them on a short leash.
            */
            OOJSStartTimeLimiterWithTimeLimit(0.1);
            
            for (i = 0; i < sCount; i++)
            {
                // TODO: remove out of scope callbacks - post MNSR!
                JS_CallFunctionValue(context, NULL, sCallbacks[i].callback, 1, &deltaVal, &result);
                JS_ReportPendingException(context);
            }
            
            OOJSStopTimeLimiter();
            sRunning = NO;
            
            if (EXPECT_NOT(sDeferredOps != NULL))
            {
                RunDeferredOperations(context);
                DESTROY(sDeferredOps);
            }
        }
        OOJSRelinquishContext(context);
    }
}

References DESTROY, EXPECT, EXPECT_NOT, OOJSAcquireContext(), OOJSRelinquishContext(), OOJSStartTimeLimiterWithTimeLimit, OOJSStopTimeLimiter, RunDeferredOperations(), sCallbacks, sCount, sDeferredOps, and sRunning.

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OOJSFrameCallbacksRemoveAll()

void OOJSFrameCallbacksRemoveAll

(

void

)

Definition at line 175 of file OOJSFrameCallbacks.m.

{
    NSCAssert1(!sRunning, @"%s cannot be called while frame callbacks are running.", __PRETTY_FUNCTION__);
    
    if (sCount != 0)
    {
        JSContext *context = OOJSAcquireContext();
        while (sCount != 0)  RemoveCallbackAtIndex(context, sCount - 1);
        OOJSRelinquishContext(context);
    }
}

References OOJSAcquireContext(), OOJSRelinquishContext(), RemoveCallbackAtIndex(), sCount, and sRunning.

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