static void
random_init(JSRuntime *rt)
{
int64 tmp, tmp2;
/* Do at most once. */
if (rt->rngInitialized)
return;
rt->rngInitialized = JS_TRUE;
/* rt->rngMultiplier = 0x5DEECE66DL */
JSLL_ISHL(tmp, 0x5, 32);
JSLL_UI2L(tmp2, 0xDEECE66DL);
JSLL_OR(rt->rngMultiplier, tmp, tmp2);
/* rt->rngAddend = 0xBL */
JSLL_I2L(rt->rngAddend, 0xBL);
/* rt->rngMask = (1L << 48) - 1 */
JSLL_I2L(tmp, 1);
JSLL_SHL(tmp2, tmp, 48);
JSLL_SUB(rt->rngMask, tmp2, tmp);
/* rt->rngDscale = (jsdouble)(1L << 53) */
JSLL_SHL(tmp2, tmp, 53);
JSLL_L2D(rt->rngDscale, tmp2);
/* Finally, set the seed from current time. */
random_setSeed(rt, PRMJ_Now());
}
static jsdouble
random_nextDouble(JSRuntime *rt)
{
int64 tmp, tmp2;
jsdouble d;
JSLL_ISHL(tmp, random_next(rt, 26), 27);
JSLL_UI2L(tmp2, random_next(rt, 27));
JSLL_ADD(tmp, tmp, tmp2);
JSLL_L2D(d, tmp);
return d / rt->rngDscale;
}
JSBool
_callHook(JSDContext *jsdc, JSContext *cx, JSStackFrame *fp, JSBool before,
uintN type, JSD_CallHookProc hook, void *hookData)
{
JSDScript* jsdscript;
JSScript* jsscript;
JSBool hookresult = JS_TRUE;
if (!jsdc || !jsdc->inited)
return JS_FALSE;
if (!hook && !(jsdc->flags & JSD_COLLECT_PROFILE_DATA) &&
jsdc->flags & JSD_DISABLE_OBJECT_TRACE)
{
/* no hook to call, no profile data needs to be collected, and
* the client has object tracing disabled, so there is nothing
* to do here.
*/
return hookresult;
}
if (before && JS_IsConstructorFrame(cx, fp))
jsd_Constructing(jsdc, cx, JS_GetFrameThis(cx, fp), fp);
jsscript = JS_GetFrameScript(cx, fp);
if (jsscript)
{
JSD_LOCK_SCRIPTS(jsdc);
jsdscript = jsd_FindJSDScript(jsdc, jsscript);
JSD_UNLOCK_SCRIPTS(jsdc);
if (jsdscript)
{
if (JSD_IS_PROFILE_ENABLED(jsdc, jsdscript))
{
JSDProfileData *pdata;
pdata = jsd_GetScriptProfileData (jsdc, jsdscript);
if (pdata)
{
if (before)
{
if (JSLL_IS_ZERO(pdata->lastCallStart))
{
int64 now;
JSDProfileData *callerpdata;
/* Get the time just the once, for consistency. */
now = JS_Now();
/* This contains a pointer to the profile data for
* the caller of this function. */
callerpdata = jsdc->callingFunctionPData;
if (callerpdata)
{
int64 ll_delta;
pdata->caller = callerpdata;
/* We need to 'stop' the timer for the caller.
* Use time since last return if appropriate. */
if (JSLL_IS_ZERO(jsdc->lastReturnTime))
{
JSLL_SUB(ll_delta, now, callerpdata->lastCallStart);
} else {
JSLL_SUB(ll_delta, now, jsdc->lastReturnTime);
}
JSLL_ADD(callerpdata->runningTime, callerpdata->runningTime, ll_delta);
}
/* We're the new current function, and no return
* has happened yet. */
jsdc->callingFunctionPData = pdata;
jsdc->lastReturnTime = JSLL_ZERO;
/* This function has no running time (just been
* called!), and we'll need the call start time. */
pdata->runningTime = JSLL_ZERO;
pdata->lastCallStart = now;
} else {
if (++pdata->recurseDepth > pdata->maxRecurseDepth)
pdata->maxRecurseDepth = pdata->recurseDepth;
}
/* make sure we're called for the return too. */
hookresult = JS_TRUE;
} else if (!pdata->recurseDepth &&
!JSLL_IS_ZERO(pdata->lastCallStart)) {
int64 now, ll_delta;
jsdouble delta;
now = JS_Now();
JSLL_SUB(ll_delta, now, pdata->lastCallStart);
JSLL_L2D(delta, ll_delta);
delta /= 1000.0;
pdata->totalExecutionTime += delta;
/* minExecutionTime starts as 0, so we need to overwrite
* it on the first call always. */
if ((0 == pdata->callCount) ||
delta < pdata->minExecutionTime)
{
pdata->minExecutionTime = delta;
}
if (delta > pdata->maxExecutionTime)
pdata->maxExecutionTime = delta;
/* If we last returned from a function (as opposed to
* having last entered this function), we need to inc.
* the running total by the time delta since the last
* return, and use the running total instead of the
* delta calculated above. */
if (!JSLL_IS_ZERO(jsdc->lastReturnTime))
{
/* Add last chunk to running time, and use total
* running time as 'delta'. */
JSLL_SUB(ll_delta, now, jsdc->lastReturnTime);
JSLL_ADD(pdata->runningTime, pdata->runningTime, ll_delta);
JSLL_L2D(delta, pdata->runningTime);
delta /= 1000.0;
}
pdata->totalOwnExecutionTime += delta;
/* See minExecutionTime comment above. */
if ((0 == pdata->callCount) ||
delta < pdata->minOwnExecutionTime)
{
pdata->minOwnExecutionTime = delta;
}
if (delta > pdata->maxOwnExecutionTime)
pdata->maxOwnExecutionTime = delta;
/* Current function is now our caller. */
jsdc->callingFunctionPData = pdata->caller;
/* No hanging pointers, please. */
pdata->caller = NULL;
/* Mark the time we returned, and indicate this
* function is no longer running. */
jsdc->lastReturnTime = now;
pdata->lastCallStart = JSLL_ZERO;
++pdata->callCount;
} else if (pdata->recurseDepth) {
--pdata->recurseDepth;
++pdata->callCount;
}
}
if (hook)
jsd_CallCallHook (jsdc, cx, type, hook, hookData);
} else {
if (hook)
hookresult =
jsd_CallCallHook (jsdc, cx, type, hook, hookData);
else
hookresult = JS_TRUE;
}
}
}
#ifdef JSD_TRACE
_interpreterTrace(jsdc, cx, fp, before);
return JS_TRUE;
#else
return hookresult;
#endif
}
