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Remove all C++ Telemetry Accumulation calls.

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This creates a number of stubs and leaves some surrounding code that may be irrelevant (eg. recorded time stamps, status variables).
Stub resolution/removal should be a follow-up to this.
This commit is contained in:
wolfbeast 2018-09-03 10:11:38 +02:00 • committed by Roy Tam
commit 8c8145e620
186 changed files with 48 additions and 2957 deletions
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97
dom/base/nsDocument.cpp
View file

@ -25,7 +25,6 @@
#include "plstr.h"
#include "mozilla/Sprintf.h"
#include "mozilla/Telemetry.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsILoadContext.h"
@ -12370,101 +12369,7 @@ MightBeAboutOrChromeScheme(nsIURI* aURI)
void
nsDocument::ReportUseCounters()
{
static const bool sDebugUseCounters = false;
if (mReportedUseCounters) {
return;
}
mReportedUseCounters = true;
if (Telemetry::HistogramUseCounterCount > 0 &&
(IsContentDocument() || IsResourceDoc())) {
nsCOMPtr<nsIURI> uri;
NodePrincipal()->GetURI(getter_AddRefs(uri));
if (!uri || MightBeAboutOrChromeScheme(uri)) {
return;
}
if (sDebugUseCounters) {
nsCString spec = uri->GetSpecOrDefault();
// URIs can be rather long for data documents, so truncate them to
// some reasonable length.
spec.Truncate(std::min(128U, spec.Length()));
printf("-- Use counters for %s --\n", spec.get());
}
// We keep separate counts for individual documents and top-level
// pages to more accurately track how many web pages might break if
// certain features were removed. Consider the case of a single
// HTML document with several SVG images and/or iframes with
// sub-documents of their own. If we maintained a single set of use
// counters and all the sub-documents use a particular feature, then
// telemetry would indicate that we would be breaking N documents if
// that feature were removed. Whereas with a document/top-level
// page split, we can see that N documents would be affected, but
// only a single web page would be affected.
// The difference between the values of these two histograms and the
// related use counters below tell us how many pages did *not* use
// the feature in question. For instance, if we see that a given
// session has destroyed 30 content documents, but a particular use
// counter shows only a count of 5, we can infer that the use
// counter was *not* used in 25 of those 30 documents.
//
// We do things this way, rather than accumulating a boolean flag
// for each use counter, to avoid sending histograms for features
// that don't get widely used. Doing things in this fashion means
// smaller telemetry payloads and faster processing on the server
// side.
Telemetry::Accumulate(Telemetry::CONTENT_DOCUMENTS_DESTROYED, 1);
if (IsTopLevelContentDocument()) {
Telemetry::Accumulate(Telemetry::TOP_LEVEL_CONTENT_DOCUMENTS_DESTROYED, 1);
}
for (int32_t c = 0;
c < eUseCounter_Count; ++c) {
UseCounter uc = static_cast<UseCounter>(c);
Telemetry::ID id =
static_cast<Telemetry::ID>(Telemetry::HistogramFirstUseCounter + uc * 2);
bool value = GetUseCounter(uc);
if (value) {
if (sDebugUseCounters) {
const char* name = Telemetry::GetHistogramName(id);
if (name) {
printf(" %s", name);
} else {
printf(" #%d", id);
}
printf(": %d\n", value);
}
Telemetry::Accumulate(id, 1);
}
if (IsTopLevelContentDocument()) {
id = static_cast<Telemetry::ID>(Telemetry::HistogramFirstUseCounter +
uc * 2 + 1);
value = GetUseCounter(uc) || GetChildDocumentUseCounter(uc);
if (value) {
if (sDebugUseCounters) {
const char* name = Telemetry::GetHistogramName(id);
if (name) {
printf(" %s", name);
} else {
printf(" #%d", id);
}
printf(": %d\n", value);
}
Telemetry::Accumulate(id, 1);
}
}
}
}
/* STUB */
}
void