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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/glean/bindings/MemoryDistribution.h"
#include "mozilla/Components.h"
#include "nsIClassInfoImpl.h"
#include "nsJSUtils.h"
#include "nsPrintfCString.h"
#include "nsString.h"
namespace mozilla::glean {
NS_IMPL_CLASSINFO(GleanMemoryDistribution, nullptr, 0, {0})
NS_IMPL_ISUPPORTS_CI(GleanMemoryDistribution, nsIGleanMemoryDistribution)
NS_IMETHODIMP
GleanMemoryDistribution::Accumulate(uint64_t aSample) {
mMemoryDist.Accumulate(aSample);
return NS_OK;
}
NS_IMETHODIMP
GleanMemoryDistribution::TestGetValue(const nsACString& aPingName,
JSContext* aCx,
JS::MutableHandleValue aResult) {
auto result = mMemoryDist.TestGetValue(aPingName);
if (result.isNothing()) {
aResult.set(JS::UndefinedValue());
} else {
// Build return value of the form: { sum: #, values: {bucket1: count1, ...}
JS::RootedObject root(aCx, JS_NewPlainObject(aCx));
if (!root) {
return NS_ERROR_FAILURE;
}
uint64_t sum = result.ref().sum;
if (!JS_DefineProperty(aCx, root, "sum", static_cast<double>(sum),
JSPROP_ENUMERATE)) {
return NS_ERROR_FAILURE;
}
JS::RootedObject valuesObj(aCx, JS_NewPlainObject(aCx));
if (!valuesObj ||
!JS_DefineProperty(aCx, root, "values", valuesObj, JSPROP_ENUMERATE)) {
return NS_ERROR_FAILURE;
}
auto& data = result.ref().values;
for (auto iter = data.ConstIter(); !iter.Done(); iter.Next()) {
const uint64_t bucket = iter.Key();
const uint64_t count = iter.UserData();
if (!JS_DefineProperty(aCx, valuesObj,
nsPrintfCString("%" PRIu64, bucket).get(),
static_cast<double>(count), JSPROP_ENUMERATE)) {
return NS_ERROR_FAILURE;
}
}
aResult.setObject(*root);
}
return NS_OK;
}
} // namespace mozilla::glean
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