JSBool
ReflectHistogramSnapshot(JSContext *cx, JSObject *obj, Histogram *h)
{
Histogram::SampleSet ss;
h->SnapshotSample(&ss);
JSObject *counts_array;
JSObject *rarray;
jsval static_histogram = h->flags() && Histogram::kUmaTargetedHistogramFlag ? JSVAL_TRUE : JSVAL_FALSE;
const size_t count = h->bucket_count();
if (!(JS_DefineProperty(cx, obj, "min", INT_TO_JSVAL(h->declared_min()), NULL, NULL, JSPROP_ENUMERATE)
&& JS_DefineProperty(cx, obj, "max", INT_TO_JSVAL(h->declared_max()), NULL, NULL, JSPROP_ENUMERATE)
&& JS_DefineProperty(cx, obj, "histogram_type", INT_TO_JSVAL(h->histogram_type()), NULL, NULL, JSPROP_ENUMERATE)
&& JS_DefineProperty(cx, obj, "sum", DOUBLE_TO_JSVAL(ss.sum()), NULL, NULL, JSPROP_ENUMERATE)
&& (rarray = JS_NewArrayObject(cx, count, NULL))
&& JS_DefineProperty(cx, obj, "ranges", OBJECT_TO_JSVAL(rarray), NULL, NULL, JSPROP_ENUMERATE)
&& FillRanges(cx, rarray, h)
&& (counts_array = JS_NewArrayObject(cx, count, NULL))
&& JS_DefineProperty(cx, obj, "counts", OBJECT_TO_JSVAL(counts_array), NULL, NULL, JSPROP_ENUMERATE)
&& JS_DefineProperty(cx, obj, "static", static_histogram, NULL, NULL, JSPROP_ENUMERATE)
)) {
return JS_FALSE;
}
for (size_t i = 0; i < count; i++) {
if (!JS_DefineElement(cx, counts_array, i, INT_TO_JSVAL(ss.counts(i)), NULL, NULL, JSPROP_ENUMERATE)) {
return JS_FALSE;
}
}
return JS_TRUE;
}
enum reflectStatus
ReflectHistogramSnapshot(JSContext *cx, JSObject *obj, Histogram *h)
{
Histogram::SampleSet ss;
h->SnapshotSample(&ss);
// We don't want to reflect corrupt histograms.
if (h->FindCorruption(ss) != Histogram::NO_INCONSISTENCIES) {
return REFLECT_CORRUPT;
}
JSObject *counts_array;
JSObject *rarray;
const size_t count = h->bucket_count();
if (!(JS_DefineProperty(cx, obj, "min", INT_TO_JSVAL(h->declared_min()), NULL, NULL, JSPROP_ENUMERATE)
&& JS_DefineProperty(cx, obj, "max", INT_TO_JSVAL(h->declared_max()), NULL, NULL, JSPROP_ENUMERATE)
&& JS_DefineProperty(cx, obj, "histogram_type", INT_TO_JSVAL(h->histogram_type()), NULL, NULL, JSPROP_ENUMERATE)
&& JS_DefineProperty(cx, obj, "sum", DOUBLE_TO_JSVAL(ss.sum()), NULL, NULL, JSPROP_ENUMERATE)
&& (rarray = JS_NewArrayObject(cx, count, NULL))
&& JS_DefineProperty(cx, obj, "ranges", OBJECT_TO_JSVAL(rarray), NULL, NULL, JSPROP_ENUMERATE)
&& FillRanges(cx, rarray, h)
&& (counts_array = JS_NewArrayObject(cx, count, NULL))
&& JS_DefineProperty(cx, obj, "counts", OBJECT_TO_JSVAL(counts_array), NULL, NULL, JSPROP_ENUMERATE)
)) {
return REFLECT_FAILURE;
}
for (size_t i = 0; i < count; i++) {
if (!JS_DefineElement(cx, counts_array, i, INT_TO_JSVAL(ss.counts(i)), NULL, NULL, JSPROP_ENUMERATE)) {
return REFLECT_FAILURE;
}
}
return REFLECT_OK;
}
bool
IsEmpty(const Histogram *h)
{
Histogram::SampleSet ss;
h->SnapshotSample(&ss);
return ss.counts(0) == 0 && ss.sum() == 0;
}
