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firefox/toolkit/components/telemetry/core/Telemetry.cpp
Daniel Baumann 5e9a113729
Adding upstream version 140.0. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

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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 "Telemetry.h"
#include <algorithm>
#include <prio.h>
#include <prproces.h>
#if defined(XP_UNIX) && !defined(XP_DARWIN)
# include <time.h>
#else
# include <chrono>
#endif
#include "base/pickle.h"
#include "base/process_util.h"
#include "ipc/TelemetryIPCAccumulator.h"
#include "jsapi.h"
#include "jsfriendapi.h"
#include "js/Array.h" // JS::NewArrayObject
#include "js/GCAPI.h"
#include "js/PropertyAndElement.h" // JS_DefineElement, JS_DefineProperty
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/glean/TelemetryMetrics.h"
#include "mozilla/Atomics.h"
#include "mozilla/Attributes.h"
#include "mozilla/BackgroundHangMonitor.h"
#ifdef MOZ_BACKGROUNDTASKS
# include "mozilla/BackgroundTasks.h"
#endif
#include "mozilla/Components.h"
#include "mozilla/DataMutex.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/FStream.h"
#include "mozilla/IOInterposer.h"
#include "mozilla/Likely.h"
#include "mozilla/MathAlgorithms.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/MemoryTelemetry.h"
#include "mozilla/ModuleUtils.h"
#include "mozilla/Mutex.h"
#include "mozilla/PoisonIOInterposer.h"
#include "mozilla/Preferences.h"
#include "mozilla/StartupTimeline.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/Unused.h"
#if defined(XP_WIN)
# include "mozilla/WinDllServices.h"
#endif
#include "nsAppDirectoryServiceDefs.h"
#include "nsBaseHashtable.h"
#include "nsClassHashtable.h"
#include "nsCOMArray.h"
#include "nsCOMPtr.h"
#include "nsTHashMap.h"
#include "nsHashKeys.h"
#include "nsIDirectoryEnumerator.h"
#include "nsDirectoryServiceDefs.h"
#include "nsIFileStreams.h"
#include "nsIMemoryReporter.h"
#include "nsISeekableStream.h"
#include "nsITelemetry.h"
#if defined(XP_WIN)
# include "other/UntrustedModules.h"
#endif
#include "nsJSUtils.h"
#include "nsNativeCharsetUtils.h"
#include "nsNetCID.h"
#include "nsNetUtil.h"
#include "nsProxyRelease.h"
#include "nsReadableUtils.h"
#include "nsString.h"
#include "nsTHashtable.h"
#include "nsThreadUtils.h"
#if defined(XP_WIN)
# include "nsUnicharUtils.h"
#endif
#include "nsVersionComparator.h"
#include "nsXPCOMCIDInternal.h"
#include "other/CombinedStacks.h"
#include "other/TelemetryIOInterposeObserver.h"
#include "TelemetryCommon.h"
#include "TelemetryEvent.h"
#include "TelemetryHistogram.h"
#include "TelemetryScalar.h"
#include "TelemetryUserInteraction.h"
namespace {
using namespace mozilla;
using mozilla::dom::Promise;
using mozilla::Telemetry::CombinedStacks;
using mozilla::Telemetry::EventExtraEntry;
using mozilla::Telemetry::TelemetryIOInterposeObserver;
using Telemetry::Common::AutoHashtable;
using Telemetry::Common::GetCurrentProduct;
using Telemetry::Common::StringHashSet;
using Telemetry::Common::SupportedProduct;
using Telemetry::Common::ToJSString;
// This is not a member of TelemetryImpl because we want to record I/O during
// startup.
StaticAutoPtr<TelemetryIOInterposeObserver> sTelemetryIOObserver;
void ClearIOReporting() {
if (!sTelemetryIOObserver) {
return;
}
IOInterposer::Unregister(IOInterposeObserver::OpAllWithStaging,
sTelemetryIOObserver);
sTelemetryIOObserver = nullptr;
}
class TelemetryImpl final : public nsITelemetry, public nsIMemoryReporter {
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSITELEMETRY
NS_DECL_NSIMEMORYREPORTER
public:
void InitMemoryReporter();
static already_AddRefed<nsITelemetry> CreateTelemetryInstance();
static void ShutdownTelemetry();
static void RecordSlowStatement(const nsACString& sql,
const nsACString& dbName, uint32_t delay);
struct Stat {
uint32_t hitCount;
uint32_t totalTime;
};
struct StmtStats {
struct Stat mainThread;
struct Stat otherThreads;
};
typedef nsBaseHashtableET<nsCStringHashKey, StmtStats> SlowSQLEntryType;
static void RecordIceCandidates(const uint32_t iceCandidateBitmask,
const bool success);
static bool CanRecordBase();
static bool CanRecordExtended();
static bool CanRecordReleaseData();
static bool CanRecordPrereleaseData();
private:
TelemetryImpl();
~TelemetryImpl();
static nsCString SanitizeSQL(const nsACString& sql);
enum SanitizedState { Sanitized, Unsanitized };
static void StoreSlowSQL(const nsACString& offender, uint32_t delay,
SanitizedState state);
static bool ReflectMainThreadSQL(SlowSQLEntryType* entry, JSContext* cx,
JS::Handle<JSObject*> obj);
static bool ReflectOtherThreadsSQL(SlowSQLEntryType* entry, JSContext* cx,
JS::Handle<JSObject*> obj);
static bool ReflectSQL(const SlowSQLEntryType* entry, const Stat* stat,
JSContext* cx, JS::Handle<JSObject*> obj);
bool AddSQLInfo(JSContext* cx, JS::Handle<JSObject*> rootObj, bool mainThread,
bool privateSQL);
bool GetSQLStats(JSContext* cx, JS::MutableHandle<JS::Value> ret,
bool includePrivateSql);
void ReadLateWritesStacks(nsIFile* aProfileDir);
static StaticDataMutex<TelemetryImpl*> sTelemetry;
AutoHashtable<SlowSQLEntryType> mPrivateSQL;
AutoHashtable<SlowSQLEntryType> mSanitizedSQL;
Mutex mHashMutex MOZ_UNANNOTATED;
Atomic<bool, SequentiallyConsistent> mCanRecordBase;
Atomic<bool, SequentiallyConsistent> mCanRecordExtended;
CombinedStacks
mLateWritesStacks; // This is collected out of the main thread.
bool mCachedTelemetryData;
uint32_t mLastShutdownTime;
uint32_t mFailedLockCount;
nsCOMArray<nsIFetchTelemetryDataCallback> mCallbacks;
friend class nsFetchTelemetryData;
};
MOZ_RUNINIT StaticDataMutex<TelemetryImpl*> TelemetryImpl::sTelemetry(nullptr,
nullptr);
MOZ_DEFINE_MALLOC_SIZE_OF(TelemetryMallocSizeOf)
NS_IMETHODIMP
TelemetryImpl::CollectReports(nsIHandleReportCallback* aHandleReport,
nsISupports* aData, bool aAnonymize) {
mozilla::MallocSizeOf aMallocSizeOf = TelemetryMallocSizeOf;
#define COLLECT_REPORT(name, size, desc) \
MOZ_COLLECT_REPORT(name, KIND_HEAP, UNITS_BYTES, size, desc)
COLLECT_REPORT("explicit/telemetry/impl", aMallocSizeOf(this),
"Memory used by the Telemetry core implemenation");
COLLECT_REPORT(
"explicit/telemetry/scalar/shallow",
TelemetryScalar::GetMapShallowSizesOfExcludingThis(aMallocSizeOf),
"Memory used by the Telemetry Scalar implemenation");
{ // Scope for mHashMutex lock
MutexAutoLock lock(mHashMutex);
COLLECT_REPORT("explicit/telemetry/PrivateSQL",
mPrivateSQL.SizeOfExcludingThis(aMallocSizeOf),
"Memory used by the PrivateSQL Telemetry");
COLLECT_REPORT("explicit/telemetry/SanitizedSQL",
mSanitizedSQL.SizeOfExcludingThis(aMallocSizeOf),
"Memory used by the SanitizedSQL Telemetry");
}
if (sTelemetryIOObserver) {
COLLECT_REPORT("explicit/telemetry/IOObserver",
sTelemetryIOObserver->SizeOfIncludingThis(aMallocSizeOf),
"Memory used by the Telemetry IO Observer");
}
COLLECT_REPORT("explicit/telemetry/LateWritesStacks",
mLateWritesStacks.SizeOfExcludingThis(),
"Memory used by the Telemetry LateWrites Stack capturer");
COLLECT_REPORT("explicit/telemetry/Callbacks",
mCallbacks.ShallowSizeOfExcludingThis(aMallocSizeOf),
"Memory used by the Telemetry Callbacks array (shallow)");
COLLECT_REPORT(
"explicit/telemetry/histogram/data",
TelemetryHistogram::GetHistogramSizesOfIncludingThis(aMallocSizeOf),
"Memory used by Telemetry Histogram data");
COLLECT_REPORT("explicit/telemetry/scalar/data",
TelemetryScalar::GetScalarSizesOfIncludingThis(aMallocSizeOf),
"Memory used by Telemetry Scalar data");
COLLECT_REPORT("explicit/telemetry/event/data",
TelemetryEvent::SizeOfIncludingThis(aMallocSizeOf),
"Memory used by Telemetry Event data");
#undef COLLECT_REPORT
return NS_OK;
}
void InitHistogramRecordingEnabled() {
TelemetryHistogram::InitHistogramRecordingEnabled();
}
using PathChar = filesystem::Path::value_type;
using PathCharPtr = const PathChar*;
static uint32_t ReadLastShutdownDuration(PathCharPtr filename) {
nsCOMPtr<nsIFile> file;
if (NS_FAILED(NS_NewPathStringLocalFile(DependentPathString(filename),
getter_AddRefs(file)))) {
return 0;
}
FILE* f;
if (NS_FAILED(file->OpenANSIFileDesc("r", &f)) || !f) {
return 0;
}
int shutdownTime;
int r = fscanf(f, "%d\n", &shutdownTime);
fclose(f);
if (r != 1) {
return 0;
}
return shutdownTime;
}
const int32_t kMaxFailedProfileLockFileSize = 10;
bool GetFailedLockCount(nsIInputStream* inStream, uint32_t aCount,
unsigned int& result) {
nsAutoCString bufStr;
nsresult rv;
rv = NS_ReadInputStreamToString(inStream, bufStr, aCount);
NS_ENSURE_SUCCESS(rv, false);
result = bufStr.ToInteger(&rv);
return NS_SUCCEEDED(rv) && result > 0;
}
nsresult GetFailedProfileLockFile(nsIFile** aFile, nsIFile* aProfileDir) {
NS_ENSURE_ARG_POINTER(aProfileDir);
nsresult rv = aProfileDir->Clone(aFile);
NS_ENSURE_SUCCESS(rv, rv);
(*aFile)->AppendNative("Telemetry.FailedProfileLocks.txt"_ns);
return NS_OK;
}
class nsFetchTelemetryData : public Runnable {
public:
nsFetchTelemetryData(PathCharPtr aShutdownTimeFilename,
nsIFile* aFailedProfileLockFile, nsIFile* aProfileDir)
: mozilla::Runnable("nsFetchTelemetryData"),
mShutdownTimeFilename(aShutdownTimeFilename),
mFailedProfileLockFile(aFailedProfileLockFile),
mProfileDir(aProfileDir) {}
private:
PathCharPtr mShutdownTimeFilename;
nsCOMPtr<nsIFile> mFailedProfileLockFile;
nsCOMPtr<nsIFile> mProfileDir;
public:
void MainThread() {
auto lock = TelemetryImpl::sTelemetry.Lock();
auto telemetry = lock.ref();
telemetry->mCachedTelemetryData = true;
for (unsigned int i = 0, n = telemetry->mCallbacks.Count(); i < n; ++i) {
telemetry->mCallbacks[i]->Complete();
}
telemetry->mCallbacks.Clear();
}
NS_IMETHOD Run() override {
uint32_t failedLockCount = 0;
uint32_t lastShutdownDuration = 0;
LoadFailedLockCount(failedLockCount);
lastShutdownDuration = ReadLastShutdownDuration(mShutdownTimeFilename);
{
auto lock = TelemetryImpl::sTelemetry.Lock();
auto telemetry = lock.ref();
telemetry->mFailedLockCount = failedLockCount;
telemetry->mLastShutdownTime = lastShutdownDuration;
telemetry->ReadLateWritesStacks(mProfileDir);
}
glean::browser_timings::last_shutdown.Set(lastShutdownDuration);
nsCOMPtr<nsIRunnable> e =
NewRunnableMethod("nsFetchTelemetryData::MainThread", this,
&nsFetchTelemetryData::MainThread);
NS_ENSURE_STATE(e);
NS_DispatchToMainThread(e);
return NS_OK;
}
private:
nsresult LoadFailedLockCount(uint32_t& failedLockCount) {
failedLockCount = 0;
int64_t fileSize = 0;
nsresult rv = mFailedProfileLockFile->GetFileSize(&fileSize);
if (NS_FAILED(rv)) {
return rv;
}
NS_ENSURE_TRUE(fileSize <= kMaxFailedProfileLockFileSize,
NS_ERROR_UNEXPECTED);
nsCOMPtr<nsIInputStream> inStream;
rv = NS_NewLocalFileInputStream(getter_AddRefs(inStream),
mFailedProfileLockFile, PR_RDONLY);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(GetFailedLockCount(inStream, fileSize, failedLockCount),
NS_ERROR_UNEXPECTED);
inStream->Close();
mFailedProfileLockFile->Remove(false);
return NS_OK;
}
};
static TimeStamp gRecordedShutdownStartTime;
static bool gAlreadyFreedShutdownTimeFileName = false;
static PathCharPtr gRecordedShutdownTimeFileName = nullptr;
static PathCharPtr GetShutdownTimeFileName() {
if (gAlreadyFreedShutdownTimeFileName) {
return nullptr;
}
if (!gRecordedShutdownTimeFileName) {
nsCOMPtr<nsIFile> mozFile;
NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, getter_AddRefs(mozFile));
if (!mozFile) return nullptr;
mozFile->AppendNative("Telemetry.ShutdownTime.txt"_ns);
gRecordedShutdownTimeFileName = NS_xstrdup(mozFile->NativePath().get());
}
return gRecordedShutdownTimeFileName;
}
NS_IMETHODIMP
TelemetryImpl::GetLastShutdownDuration(uint32_t* aResult) {
// The user must call AsyncFetchTelemetryData first. We return zero instead of
// reporting a failure so that the rest of telemetry can uniformly handle
// the read not being available yet.
if (!mCachedTelemetryData) {
*aResult = 0;
return NS_OK;
}
*aResult = mLastShutdownTime;
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::GetFailedProfileLockCount(uint32_t* aResult) {
// The user must call AsyncFetchTelemetryData first. We return zero instead of
// reporting a failure so that the rest of telemetry can uniformly handle
// the read not being available yet.
if (!mCachedTelemetryData) {
*aResult = 0;
return NS_OK;
}
*aResult = mFailedLockCount;
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::AsyncFetchTelemetryData(
nsIFetchTelemetryDataCallback* aCallback) {
// We have finished reading the data already, just call the callback.
if (mCachedTelemetryData) {
aCallback->Complete();
return NS_OK;
}
// We already have a read request running, just remember the callback.
if (mCallbacks.Count() != 0) {
mCallbacks.AppendObject(aCallback);
return NS_OK;
}
// We make this check so that GetShutdownTimeFileName() doesn't get
// called; calling that function without telemetry enabled violates
// assumptions that the write-the-shutdown-timestamp machinery makes.
if (!Telemetry::CanRecordExtended()) {
mCachedTelemetryData = true;
aCallback->Complete();
return NS_OK;
}
// Send the read to a background thread provided by the stream transport
// service to avoid a read in the main thread.
nsCOMPtr<nsIEventTarget> targetThread =
do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
if (!targetThread) {
mCachedTelemetryData = true;
aCallback->Complete();
return NS_OK;
}
// We have to get the filename from the main thread.
PathCharPtr shutdownTimeFilename = GetShutdownTimeFileName();
if (!shutdownTimeFilename) {
mCachedTelemetryData = true;
aCallback->Complete();
return NS_OK;
}
nsCOMPtr<nsIFile> profileDir;
nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
getter_AddRefs(profileDir));
if (NS_FAILED(rv)) {
mCachedTelemetryData = true;
aCallback->Complete();
return NS_OK;
}
nsCOMPtr<nsIFile> failedProfileLockFile;
rv = GetFailedProfileLockFile(getter_AddRefs(failedProfileLockFile),
profileDir);
if (NS_FAILED(rv)) {
mCachedTelemetryData = true;
aCallback->Complete();
return NS_OK;
}
mCallbacks.AppendObject(aCallback);
nsCOMPtr<nsIRunnable> event = new nsFetchTelemetryData(
shutdownTimeFilename, failedProfileLockFile, profileDir);
targetThread->Dispatch(event, NS_DISPATCH_NORMAL);
return NS_OK;
}
TelemetryImpl::TelemetryImpl()
: mHashMutex("Telemetry::mHashMutex"),
mCanRecordBase(false),
mCanRecordExtended(false),
mCachedTelemetryData(false),
mLastShutdownTime(0),
mFailedLockCount(0) {
// We expect TelemetryHistogram::InitializeGlobalState() to have been
// called before we get to this point.
MOZ_ASSERT(TelemetryHistogram::GlobalStateHasBeenInitialized());
}
TelemetryImpl::~TelemetryImpl() {
UnregisterWeakMemoryReporter(this);
// This is still racey as access to these collections is guarded using
// sTelemetry. We will fix this in bug 1367344.
MutexAutoLock hashLock(mHashMutex);
}
void TelemetryImpl::InitMemoryReporter() { RegisterWeakMemoryReporter(this); }
bool TelemetryImpl::ReflectSQL(const SlowSQLEntryType* entry, const Stat* stat,
JSContext* cx, JS::Handle<JSObject*> obj) {
if (stat->hitCount == 0) return true;
const nsACString& sql = entry->GetKey();
JS::Rooted<JSObject*> arrayObj(cx, JS::NewArrayObject(cx, 0));
if (!arrayObj) {
return false;
}
return (
JS_DefineElement(cx, arrayObj, 0, stat->hitCount, JSPROP_ENUMERATE) &&
JS_DefineElement(cx, arrayObj, 1, stat->totalTime, JSPROP_ENUMERATE) &&
JS_DefineProperty(cx, obj, sql.BeginReading(), arrayObj,
JSPROP_ENUMERATE));
}
bool TelemetryImpl::ReflectMainThreadSQL(SlowSQLEntryType* entry, JSContext* cx,
JS::Handle<JSObject*> obj) {
return ReflectSQL(entry, &entry->GetModifiableData()->mainThread, cx, obj);
}
bool TelemetryImpl::ReflectOtherThreadsSQL(SlowSQLEntryType* entry,
JSContext* cx,
JS::Handle<JSObject*> obj) {
return ReflectSQL(entry, &entry->GetModifiableData()->otherThreads, cx, obj);
}
bool TelemetryImpl::AddSQLInfo(JSContext* cx, JS::Handle<JSObject*> rootObj,
bool mainThread, bool privateSQL) {
JS::Rooted<JSObject*> statsObj(cx, JS_NewPlainObject(cx));
if (!statsObj) return false;
AutoHashtable<SlowSQLEntryType>& sqlMap =
(privateSQL ? mPrivateSQL : mSanitizedSQL);
AutoHashtable<SlowSQLEntryType>::ReflectEntryFunc reflectFunction =
(mainThread ? ReflectMainThreadSQL : ReflectOtherThreadsSQL);
if (!sqlMap.ReflectIntoJS(reflectFunction, cx, statsObj)) {
return false;
}
return JS_DefineProperty(cx, rootObj,
mainThread ? "mainThread" : "otherThreads", statsObj,
JSPROP_ENUMERATE);
}
NS_IMETHODIMP
TelemetryImpl::GetSnapshotForHistograms(const nsACString& aStoreName,
bool aClearStore, bool aFilterTest,
JSContext* aCx,
JS::MutableHandle<JS::Value> aResult) {
constexpr auto defaultStore = "main"_ns;
unsigned int dataset = mCanRecordExtended
? nsITelemetry::DATASET_PRERELEASE_CHANNELS
: nsITelemetry::DATASET_ALL_CHANNELS;
return TelemetryHistogram::CreateHistogramSnapshots(
aCx, aResult, aStoreName.IsVoid() ? defaultStore : aStoreName, dataset,
aClearStore, aFilterTest);
}
NS_IMETHODIMP
TelemetryImpl::GetSnapshotForKeyedHistograms(
const nsACString& aStoreName, bool aClearStore, bool aFilterTest,
JSContext* aCx, JS::MutableHandle<JS::Value> aResult) {
constexpr auto defaultStore = "main"_ns;
unsigned int dataset = mCanRecordExtended
? nsITelemetry::DATASET_PRERELEASE_CHANNELS
: nsITelemetry::DATASET_ALL_CHANNELS;
return TelemetryHistogram::GetKeyedHistogramSnapshots(
aCx, aResult, aStoreName.IsVoid() ? defaultStore : aStoreName, dataset,
aClearStore, aFilterTest);
}
NS_IMETHODIMP
TelemetryImpl::GetCategoricalLabels(JSContext* aCx,
JS::MutableHandle<JS::Value> aResult) {
return TelemetryHistogram::GetCategoricalHistogramLabels(aCx, aResult);
}
NS_IMETHODIMP
TelemetryImpl::GetSnapshotForScalars(const nsACString& aStoreName,
bool aClearStore, bool aFilterTest,
JSContext* aCx,
JS::MutableHandle<JS::Value> aResult) {
constexpr auto defaultStore = "main"_ns;
unsigned int dataset = mCanRecordExtended
? nsITelemetry::DATASET_PRERELEASE_CHANNELS
: nsITelemetry::DATASET_ALL_CHANNELS;
return TelemetryScalar::CreateSnapshots(
dataset, aClearStore, aCx, 1, aResult, aFilterTest,
aStoreName.IsVoid() ? defaultStore : aStoreName);
}
NS_IMETHODIMP
TelemetryImpl::GetSnapshotForKeyedScalars(
const nsACString& aStoreName, bool aClearStore, bool aFilterTest,
JSContext* aCx, JS::MutableHandle<JS::Value> aResult) {
constexpr auto defaultStore = "main"_ns;
unsigned int dataset = mCanRecordExtended
? nsITelemetry::DATASET_PRERELEASE_CHANNELS
: nsITelemetry::DATASET_ALL_CHANNELS;
return TelemetryScalar::CreateKeyedSnapshots(
dataset, aClearStore, aCx, 1, aResult, aFilterTest,
aStoreName.IsVoid() ? defaultStore : aStoreName);
}
bool TelemetryImpl::GetSQLStats(JSContext* cx, JS::MutableHandle<JS::Value> ret,
bool includePrivateSql) {
JS::Rooted<JSObject*> root_obj(cx, JS_NewPlainObject(cx));
if (!root_obj) return false;
ret.setObject(*root_obj);
MutexAutoLock hashMutex(mHashMutex);
// Add info about slow SQL queries on the main thread
if (!AddSQLInfo(cx, root_obj, true, includePrivateSql)) return false;
// Add info about slow SQL queries on other threads
if (!AddSQLInfo(cx, root_obj, false, includePrivateSql)) return false;
return true;
}
NS_IMETHODIMP
TelemetryImpl::GetSlowSQL(JSContext* cx, JS::MutableHandle<JS::Value> ret) {
if (GetSQLStats(cx, ret, false)) return NS_OK;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
TelemetryImpl::GetDebugSlowSQL(JSContext* cx,
JS::MutableHandle<JS::Value> ret) {
bool revealPrivateSql =
Preferences::GetBool("toolkit.telemetry.debugSlowSql", false);
if (GetSQLStats(cx, ret, revealPrivateSql)) return NS_OK;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
TelemetryImpl::GetUntrustedModuleLoadEvents(uint32_t aFlags, JSContext* cx,
Promise** aPromise) {
#if defined(XP_WIN)
return Telemetry::GetUntrustedModuleLoadEvents(aFlags, cx, aPromise);
#else
return NS_ERROR_NOT_IMPLEMENTED;
#endif
}
NS_IMETHODIMP
TelemetryImpl::GetAreUntrustedModuleLoadEventsReady(bool* ret) {
#if defined(XP_WIN)
*ret = DllServices::Get()->IsReadyForBackgroundProcessing();
return NS_OK;
#else
return NS_ERROR_NOT_IMPLEMENTED;
#endif
}
static bool IsValidBreakpadId(const std::string& breakpadId) {
if (breakpadId.size() < 33) {
return false;
}
for (char c : breakpadId) {
if ((c < '0' || c > '9') && (c < 'A' || c > 'F')) {
return false;
}
}
return true;
}
// Read a stack from the given file name. In case of any error, aStack is
// unchanged.
static void ReadStack(PathCharPtr aFileName,
Telemetry::ProcessedStack& aStack) {
IFStream file(aFileName);
size_t numModules;
file >> numModules;
if (file.fail()) {
return;
}
char newline = file.get();
if (file.fail() || newline != '\n') {
return;
}
Telemetry::ProcessedStack stack;
for (size_t i = 0; i < numModules; ++i) {
std::string breakpadId;
file >> breakpadId;
if (file.fail() || !IsValidBreakpadId(breakpadId)) {
return;
}
char space = file.get();
if (file.fail() || space != ' ') {
return;
}
std::string moduleName;
getline(file, moduleName);
if (file.fail() || moduleName[0] == ' ') {
return;
}
Telemetry::ProcessedStack::Module module = {
NS_ConvertUTF8toUTF16(moduleName.c_str()),
nsCString(breakpadId.c_str(), breakpadId.size()),
};
stack.AddModule(module);
}
size_t numFrames;
file >> numFrames;
if (file.fail()) {
return;
}
newline = file.get();
if (file.fail() || newline != '\n') {
return;
}
for (size_t i = 0; i < numFrames; ++i) {
uint16_t index;
file >> index;
uintptr_t offset;
file >> std::hex >> offset >> std::dec;
if (file.fail()) {
return;
}
Telemetry::ProcessedStack::Frame frame = {offset, index};
stack.AddFrame(frame);
}
aStack = stack;
}
void TelemetryImpl::ReadLateWritesStacks(nsIFile* aProfileDir) {
nsCOMPtr<nsIDirectoryEnumerator> files;
if (NS_FAILED(aProfileDir->GetDirectoryEntries(getter_AddRefs(files)))) {
return;
}
constexpr auto prefix = u"Telemetry.LateWriteFinal-"_ns;
nsCOMPtr<nsIFile> file;
while (NS_SUCCEEDED(files->GetNextFile(getter_AddRefs(file))) && file) {
nsAutoString leafName;
if (NS_FAILED(file->GetLeafName(leafName)) ||
!StringBeginsWith(leafName, prefix)) {
continue;
}
Telemetry::ProcessedStack stack;
ReadStack(file->NativePath().get(), stack);
if (stack.GetStackSize() != 0) {
mLateWritesStacks.AddStack(stack);
}
// Delete the file so that we don't report it again on the next run.
file->Remove(false);
}
}
NS_IMETHODIMP
TelemetryImpl::GetLateWrites(JSContext* cx, JS::MutableHandle<JS::Value> ret) {
// The user must call AsyncReadTelemetryData first. We return an empty list
// instead of reporting a failure so that the rest of telemetry can uniformly
// handle the read not being available yet.
// FIXME: we allocate the js object again and again in the getter. We should
// figure out a way to cache it. In order to do that we have to call
// JS_AddNamedObjectRoot. A natural place to do so is in the TelemetryImpl
// constructor, but it is not clear how to get a JSContext in there.
// Another option would be to call it in here when we first call
// CreateJSStackObject, but we would still need to figure out where to call
// JS_RemoveObjectRoot. Would it be ok to never call JS_RemoveObjectRoot
// and just set the pointer to nullptr is the telemetry destructor?
JSObject* report;
if (!mCachedTelemetryData) {
CombinedStacks empty;
report = CreateJSStackObject(cx, empty);
} else {
report = CreateJSStackObject(cx, mLateWritesStacks);
}
if (report == nullptr) {
return NS_ERROR_FAILURE;
}
ret.setObject(*report);
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::GetHistogramById(const nsACString& name, JSContext* cx,
JS::MutableHandle<JS::Value> ret) {
return TelemetryHistogram::GetHistogramById(name, cx, ret);
}
NS_IMETHODIMP
TelemetryImpl::GetKeyedHistogramById(const nsACString& name, JSContext* cx,
JS::MutableHandle<JS::Value> ret) {
return TelemetryHistogram::GetKeyedHistogramById(name, cx, ret);
}
/**
* Indicates if Telemetry can record base data (FHR data). This is true if the
* FHR data reporting service or self-support are enabled.
*
* In the unlikely event that adding a new base probe is needed, please check
* the data collection wiki at https://wiki.mozilla.org/Firefox/Data_Collection
* and talk to the Telemetry team.
*/
NS_IMETHODIMP
TelemetryImpl::GetCanRecordBase(bool* ret) {
*ret = mCanRecordBase;
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::SetCanRecordBase(bool canRecord) {
#ifndef FUZZING
if (canRecord != mCanRecordBase) {
TelemetryHistogram::SetCanRecordBase(canRecord);
TelemetryScalar::SetCanRecordBase(canRecord);
TelemetryEvent::SetCanRecordBase(canRecord);
mCanRecordBase = canRecord;
}
#endif
return NS_OK;
}
/**
* Indicates if Telemetry is allowed to record extended data. Returns false if
* the user hasn't opted into "extended Telemetry" on the Release channel, when
* the user has explicitly opted out of Telemetry on Nightly/Aurora/Beta or if
* manually set to false during tests. If the returned value is false, gathering
* of extended telemetry statistics is disabled.
*/
NS_IMETHODIMP
TelemetryImpl::GetCanRecordExtended(bool* ret) {
*ret = mCanRecordExtended;
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::SetCanRecordExtended(bool canRecord) {
#ifndef FUZZING
if (canRecord != mCanRecordExtended) {
TelemetryHistogram::SetCanRecordExtended(canRecord);
TelemetryScalar::SetCanRecordExtended(canRecord);
TelemetryEvent::SetCanRecordExtended(canRecord);
mCanRecordExtended = canRecord;
}
#endif
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::GetCanRecordReleaseData(bool* ret) {
*ret = mCanRecordBase;
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::GetCanRecordPrereleaseData(bool* ret) {
*ret = mCanRecordExtended;
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::GetIsOfficialTelemetry(bool* ret) {
#if defined(MOZILLA_OFFICIAL) && defined(MOZ_TELEMETRY_REPORTING) && \
!defined(DEBUG)
*ret = true;
#else
*ret = false;
#endif
return NS_OK;
}
already_AddRefed<nsITelemetry> TelemetryImpl::CreateTelemetryInstance() {
{
auto lock = sTelemetry.Lock();
MOZ_ASSERT(
*lock == nullptr,
"CreateTelemetryInstance may only be called once, via GetService()");
}
bool useTelemetry = false;
#ifndef FUZZING
if (XRE_IsParentProcess() || XRE_IsContentProcess() || XRE_IsGPUProcess() ||
XRE_IsRDDProcess() || XRE_IsSocketProcess() || XRE_IsUtilityProcess()) {
useTelemetry = true;
}
#endif
#ifdef MOZ_BACKGROUNDTASKS
if (BackgroundTasks::IsBackgroundTaskMode()) {
// Background tasks collect per-task metrics with Glean.
useTelemetry = false;
}
#endif
// First, initialize the TelemetryHistogram and TelemetryScalar global states.
TelemetryHistogram::InitializeGlobalState(useTelemetry, useTelemetry);
TelemetryScalar::InitializeGlobalState(useTelemetry, useTelemetry);
// Only record events from the parent process.
TelemetryEvent::InitializeGlobalState(XRE_IsParentProcess(),
XRE_IsParentProcess());
// Currently, only UserInteractions from the parent process are recorded.
TelemetryUserInteraction::InitializeGlobalState(useTelemetry);
// Now, create and initialize the Telemetry global state.
TelemetryImpl* telemetry = new TelemetryImpl();
{
auto lock = sTelemetry.Lock();
*lock = telemetry;
// AddRef for the local reference before releasing the lock.
NS_ADDREF(telemetry);
}
// AddRef for the caller
nsCOMPtr<nsITelemetry> ret = telemetry;
telemetry->mCanRecordBase = useTelemetry;
telemetry->mCanRecordExtended = useTelemetry;
telemetry->InitMemoryReporter();
InitHistogramRecordingEnabled(); // requires sTelemetry to exist
return ret.forget();
}
void TelemetryImpl::ShutdownTelemetry() {
// No point in collecting IO beyond this point
ClearIOReporting();
{
auto lock = sTelemetry.Lock();
NS_IF_RELEASE(lock.ref());
}
// Lastly, de-initialise the TelemetryHistogram and TelemetryScalar global
// states, so as to release any heap storage that would otherwise be kept
// alive by it.
TelemetryHistogram::DeInitializeGlobalState();
TelemetryScalar::DeInitializeGlobalState();
TelemetryEvent::DeInitializeGlobalState();
TelemetryUserInteraction::DeInitializeGlobalState();
TelemetryIPCAccumulator::DeInitializeGlobalState();
}
void TelemetryImpl::StoreSlowSQL(const nsACString& sql, uint32_t delay,
SanitizedState state) {
auto lock = sTelemetry.Lock();
auto telemetry = lock.ref();
AutoHashtable<SlowSQLEntryType>* slowSQLMap = nullptr;
if (state == Sanitized)
slowSQLMap = &(telemetry->mSanitizedSQL);
else
slowSQLMap = &(telemetry->mPrivateSQL);
MutexAutoLock hashMutex(telemetry->mHashMutex);
SlowSQLEntryType* entry = slowSQLMap->GetEntry(sql);
if (!entry) {
entry = slowSQLMap->PutEntry(sql);
if (MOZ_UNLIKELY(!entry)) return;
entry->GetModifiableData()->mainThread.hitCount = 0;
entry->GetModifiableData()->mainThread.totalTime = 0;
entry->GetModifiableData()->otherThreads.hitCount = 0;
entry->GetModifiableData()->otherThreads.totalTime = 0;
}
if (NS_IsMainThread()) {
entry->GetModifiableData()->mainThread.hitCount++;
entry->GetModifiableData()->mainThread.totalTime += delay;
} else {
entry->GetModifiableData()->otherThreads.hitCount++;
entry->GetModifiableData()->otherThreads.totalTime += delay;
}
}
/**
* This method replaces string literals in SQL strings with the word :private
*
* States used in this state machine:
*
* NORMAL:
* - This is the active state when not iterating over a string literal or
* comment
*
* SINGLE_QUOTE:
* - Defined here: http://www.sqlite.org/lang_expr.html
* - This state represents iterating over a string literal opened with
* a single quote.
* - A single quote within the string can be encoded by putting 2 single quotes
* in a row, e.g. 'This literal contains an escaped quote '''
* - Any double quotes found within a single-quoted literal are ignored
* - This state covers BLOB literals, e.g. X'ABC123'
* - The string literal and the enclosing quotes will be replaced with
* the text :private
*
* DOUBLE_QUOTE:
* - Same rules as the SINGLE_QUOTE state.
* - According to http://www.sqlite.org/lang_keywords.html,
* SQLite interprets text in double quotes as an identifier unless it's used in
* a context where it cannot be resolved to an identifier and a string literal
* is allowed. This method removes text in double-quotes for safety.
*
* DASH_COMMENT:
* - http://www.sqlite.org/lang_comment.html
* - A dash comment starts with two dashes in a row,
* e.g. DROP TABLE foo -- a comment
* - Any text following two dashes in a row is interpreted as a comment until
* end of input or a newline character
* - Any quotes found within the comment are ignored and no replacements made
*
* C_STYLE_COMMENT:
* - http://www.sqlite.org/lang_comment.html
* - A C-style comment starts with a forward slash and an asterisk, and ends
* with an asterisk and a forward slash
* - Any text following comment start is interpreted as a comment up to end of
* input or comment end
* - Any quotes found within the comment are ignored and no replacements made
*/
nsCString TelemetryImpl::SanitizeSQL(const nsACString& sql) {
nsCString output;
int length = sql.Length();
typedef enum {
NORMAL,
SINGLE_QUOTE,
DOUBLE_QUOTE,
DASH_COMMENT,
C_STYLE_COMMENT,
} State;
State state = NORMAL;
int fragmentStart = 0;
for (int i = 0; i < length; i++) {
char character = sql[i];
char nextCharacter = (i + 1 < length) ? sql[i + 1] : '\0';
switch (character) {
case '\'':
case '"':
if (state == NORMAL) {
state = (character == '\'') ? SINGLE_QUOTE : DOUBLE_QUOTE;
output +=
nsDependentCSubstring(sql, fragmentStart, i - fragmentStart);
output += ":private";
fragmentStart = -1;
} else if ((state == SINGLE_QUOTE && character == '\'') ||
(state == DOUBLE_QUOTE && character == '"')) {
if (nextCharacter == character) {
// Two consecutive quotes within a string literal are a single
// escaped quote
i++;
} else {
state = NORMAL;
fragmentStart = i + 1;
}
}
break;
case '-':
if (state == NORMAL) {
if (nextCharacter == '-') {
state = DASH_COMMENT;
i++;
}
}
break;
case '\n':
if (state == DASH_COMMENT) {
state = NORMAL;
}
break;
case '/':
if (state == NORMAL) {
if (nextCharacter == '*') {
state = C_STYLE_COMMENT;
i++;
}
}
break;
case '*':
if (state == C_STYLE_COMMENT) {
if (nextCharacter == '/') {
state = NORMAL;
}
}
break;
default:
continue;
}
}
if ((fragmentStart >= 0) && fragmentStart < length)
output += nsDependentCSubstring(sql, fragmentStart, length - fragmentStart);
return output;
}
// An allowlist mechanism to prevent Telemetry reporting on Addon & Thunderbird
// DBs.
struct TrackedDBEntry {
const char* mName;
const uint32_t mNameLength;
// This struct isn't meant to be used beyond the static arrays below.
constexpr TrackedDBEntry(const char* aName, uint32_t aNameLength)
: mName(aName), mNameLength(aNameLength) {}
TrackedDBEntry() = delete;
TrackedDBEntry(TrackedDBEntry&) = delete;
};
#define TRACKEDDB_ENTRY(_name) {_name, (sizeof(_name) - 1)}
// An allowlist of database names. If the database name exactly matches one of
// these then its SQL statements will always be recorded.
static constexpr TrackedDBEntry kTrackedDBs[] = {
// IndexedDB for about:home, see aboutHome.js
TRACKEDDB_ENTRY("818200132aebmoouht.sqlite"),
TRACKEDDB_ENTRY("addons.sqlite"),
TRACKEDDB_ENTRY("content-prefs.sqlite"),
TRACKEDDB_ENTRY("cookies.sqlite"),
TRACKEDDB_ENTRY("extensions.sqlite"),
TRACKEDDB_ENTRY("favicons.sqlite"),
TRACKEDDB_ENTRY("formhistory.sqlite"),
TRACKEDDB_ENTRY("index.sqlite"),
TRACKEDDB_ENTRY("netpredictions.sqlite"),
TRACKEDDB_ENTRY("permissions.sqlite"),
TRACKEDDB_ENTRY("places.sqlite"),
TRACKEDDB_ENTRY("reading-list.sqlite"),
TRACKEDDB_ENTRY("search.sqlite"),
TRACKEDDB_ENTRY("urlclassifier3.sqlite"),
TRACKEDDB_ENTRY("webappsstore.sqlite")};
// An allowlist of database name prefixes. If the database name begins with
// one of these prefixes then its SQL statements will always be recorded.
static const TrackedDBEntry kTrackedDBPrefixes[] = {
TRACKEDDB_ENTRY("indexedDB-")};
#undef TRACKEDDB_ENTRY
// Slow SQL statements will be automatically
// trimmed to kMaxSlowStatementLength characters.
// This limit doesn't include the ellipsis and DB name,
// that are appended at the end of the stored statement.
const uint32_t kMaxSlowStatementLength = 1000;
void TelemetryImpl::RecordSlowStatement(const nsACString& sql,
const nsACString& dbName,
uint32_t delay) {
MOZ_ASSERT(!sql.IsEmpty());
MOZ_ASSERT(!dbName.IsEmpty());
{
auto lock = sTelemetry.Lock();
if (!lock.ref() || !TelemetryHistogram::CanRecordExtended()) {
return;
}
}
bool recordStatement = false;
for (const TrackedDBEntry& nameEntry : kTrackedDBs) {
MOZ_ASSERT(nameEntry.mNameLength);
const nsDependentCString name(nameEntry.mName, nameEntry.mNameLength);
if (dbName == name) {
recordStatement = true;
break;
}
}
if (!recordStatement) {
for (const TrackedDBEntry& prefixEntry : kTrackedDBPrefixes) {
MOZ_ASSERT(prefixEntry.mNameLength);
const nsDependentCString prefix(prefixEntry.mName,
prefixEntry.mNameLength);
if (StringBeginsWith(dbName, prefix)) {
recordStatement = true;
break;
}
}
}
if (recordStatement) {
nsAutoCString sanitizedSQL(SanitizeSQL(sql));
if (sanitizedSQL.Length() > kMaxSlowStatementLength) {
sanitizedSQL.SetLength(kMaxSlowStatementLength);
sanitizedSQL += "...";
}
sanitizedSQL.AppendPrintf(" /* %s */", nsPromiseFlatCString(dbName).get());
StoreSlowSQL(sanitizedSQL, delay, Sanitized);
} else {
// Report aggregate DB-level statistics for addon DBs
nsAutoCString aggregate;
aggregate.AppendPrintf("Untracked SQL for %s",
nsPromiseFlatCString(dbName).get());
StoreSlowSQL(aggregate, delay, Sanitized);
}
nsAutoCString fullSQL;
fullSQL.AppendPrintf("%s /* %s */", nsPromiseFlatCString(sql).get(),
nsPromiseFlatCString(dbName).get());
StoreSlowSQL(fullSQL, delay, Unsanitized);
}
bool TelemetryImpl::CanRecordBase() {
auto lock = sTelemetry.Lock();
auto telemetry = lock.ref();
if (!telemetry) {
return false;
}
bool canRecordBase;
nsresult rv = telemetry->GetCanRecordBase(&canRecordBase);
return NS_SUCCEEDED(rv) && canRecordBase;
}
bool TelemetryImpl::CanRecordExtended() {
auto lock = sTelemetry.Lock();
auto telemetry = lock.ref();
if (!telemetry) {
return false;
}
bool canRecordExtended;
nsresult rv = telemetry->GetCanRecordExtended(&canRecordExtended);
return NS_SUCCEEDED(rv) && canRecordExtended;
}
bool TelemetryImpl::CanRecordReleaseData() { return CanRecordBase(); }
bool TelemetryImpl::CanRecordPrereleaseData() { return CanRecordExtended(); }
NS_IMPL_ISUPPORTS(TelemetryImpl, nsITelemetry, nsIMemoryReporter)
NS_IMETHODIMP
TelemetryImpl::GetFileIOReports(JSContext* cx,
JS::MutableHandle<JS::Value> ret) {
if (sTelemetryIOObserver) {
JS::Rooted<JSObject*> obj(cx, JS_NewPlainObject(cx));
if (!obj) {
return NS_ERROR_FAILURE;
}
if (!sTelemetryIOObserver->ReflectIntoJS(cx, obj)) {
return NS_ERROR_FAILURE;
}
ret.setObject(*obj);
return NS_OK;
}
ret.setNull();
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::MsSinceProcessStart(double* aResult) {
return Telemetry::Common::MsSinceProcessStart(aResult);
}
NS_IMETHODIMP
TelemetryImpl::MsSinceProcessStartIncludingSuspend(double* aResult) {
return Telemetry::Common::MsSinceProcessStartIncludingSuspend(aResult);
}
NS_IMETHODIMP
TelemetryImpl::MsSinceProcessStartExcludingSuspend(double* aResult) {
return Telemetry::Common::MsSinceProcessStartExcludingSuspend(aResult);
}
NS_IMETHODIMP
TelemetryImpl::MsSystemNow(double* aResult) {
#if defined(XP_UNIX) && !defined(XP_DARWIN)
timespec ts;
clock_gettime(CLOCK_REALTIME, &ts);
*aResult = ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
#else
using namespace std::chrono;
milliseconds ms =
duration_cast<milliseconds>(system_clock::now().time_since_epoch());
*aResult = static_cast<double>(ms.count());
#endif // XP_UNIX && !XP_DARWIN
return NS_OK;
}
// Telemetry Scalars IDL Implementation
NS_IMETHODIMP
TelemetryImpl::RegisterBuiltinScalars(const nsACString& aCategoryName,
JS::Handle<JS::Value> aScalarData,
JSContext* cx) {
return TelemetryScalar::RegisterScalars(aCategoryName, aScalarData, cx);
}
NS_IMETHODIMP
TelemetryImpl::ClearScalars() {
TelemetryScalar::ClearScalars();
return NS_OK;
}
// Telemetry Event IDL implementation.
NS_IMETHODIMP
TelemetryImpl::SnapshotEvents(uint32_t aDataset, bool aClear,
uint32_t aEventLimit, JSContext* aCx,
uint8_t optional_argc,
JS::MutableHandle<JS::Value> aResult) {
return TelemetryEvent::CreateSnapshots(aDataset, aClear, aEventLimit, aCx,
optional_argc, aResult);
}
NS_IMETHODIMP
TelemetryImpl::RegisterBuiltinEvents(const nsACString& aCategory,
JS::Handle<JS::Value> aEventData,
JSContext* cx) {
return TelemetryEvent::RegisterBuiltinEvents(aCategory, aEventData, cx);
}
NS_IMETHODIMP
TelemetryImpl::ClearEvents() {
TelemetryEvent::ClearEvents();
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::FlushBatchedChildTelemetry() {
TelemetryIPCAccumulator::IPCTimerFired(nullptr, nullptr);
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::EarlyInit() {
Unused << MemoryTelemetry::Get();
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::DelayedInit() {
MemoryTelemetry::Get().DelayedInit();
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::Shutdown() {
MemoryTelemetry::Get().Shutdown();
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::GatherMemory(JSContext* aCx, Promise** aResult) {
ErrorResult rv;
RefPtr<Promise> promise = Promise::Create(xpc::CurrentNativeGlobal(aCx), rv);
if (rv.Failed()) {
return rv.StealNSResult();
}
MemoryTelemetry::Get().GatherReports(
[promise]() { promise->MaybeResolve(JS::UndefinedHandleValue); });
promise.forget(aResult);
return NS_OK;
}
NS_IMETHODIMP
TelemetryImpl::GetAllStores(JSContext* aCx,
JS::MutableHandle<JS::Value> aResult) {
StringHashSet stores;
nsresult rv;
rv = TelemetryHistogram::GetAllStores(stores);
if (NS_FAILED(rv)) {
return rv;
}
rv = TelemetryScalar::GetAllStores(stores);
if (NS_FAILED(rv)) {
return rv;
}
JS::RootedVector<JS::Value> allStores(aCx);
if (!allStores.reserve(stores.Count())) {
return NS_ERROR_FAILURE;
}
for (const auto& value : stores) {
JS::Rooted<JS::Value> store(aCx);
store.setString(ToJSString(aCx, value));
if (!allStores.append(store)) {
return NS_ERROR_FAILURE;
}
}
JS::Rooted<JSObject*> rarray(aCx, JS::NewArrayObject(aCx, allStores));
if (rarray == nullptr) {
return NS_ERROR_FAILURE;
}
aResult.setObject(*rarray);
return NS_OK;
}
} // namespace
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
//
// EXTERNALLY VISIBLE FUNCTIONS in mozilla::
// These are NOT listed in Telemetry.h
namespace mozilla {
void RecordShutdownStartTimeStamp() {
#ifdef DEBUG
// FIXME: this function should only be called once, since it should be called
// at the earliest point we *know* we are shutting down. Unfortunately
// this assert has been firing. Given that if we are called multiple times
// we just keep the last timestamp, the assert is commented for now.
static bool recorded = false;
// MOZ_ASSERT(!recorded);
(void)
recorded; // Silence unused-var warnings (remove when assert re-enabled)
recorded = true;
#endif
if (!Telemetry::CanRecordExtended()) return;
gRecordedShutdownStartTime = TimeStamp::Now();
GetShutdownTimeFileName();
}
void RecordShutdownEndTimeStamp() {
if (!gRecordedShutdownTimeFileName || gAlreadyFreedShutdownTimeFileName)
return;
PathString name(gRecordedShutdownTimeFileName);
free(const_cast<PathChar*>(gRecordedShutdownTimeFileName));
gRecordedShutdownTimeFileName = nullptr;
gAlreadyFreedShutdownTimeFileName = true;
if (gRecordedShutdownStartTime.IsNull()) {
// If |CanRecordExtended()| is true before |AsyncFetchTelemetryData| is
// called and then disabled before shutdown, |RecordShutdownStartTimeStamp|
// will bail out and we will end up with a null |gRecordedShutdownStartTime|
// here. This can happen during tests.
return;
}
AutoPathString tmpName(name);
tmpName.AppendLiteral(".tmp");
nsCOMPtr<nsIFile> tmpFile;
if (NS_FAILED(NS_NewPathStringLocalFile(tmpName, getter_AddRefs(tmpFile)))) {
return;
}
FILE* f;
if (NS_FAILED(tmpFile->OpenANSIFileDesc("w", &f)) || !f) return;
// On a normal release build this should be called just before
// calling _exit, but on a debug build or when the user forces a full
// shutdown this is called as late as possible, so we have to
// allow this write as write poisoning will be enabled.
MozillaRegisterDebugFILE(f);
TimeStamp now = TimeStamp::Now();
MOZ_ASSERT(now >= gRecordedShutdownStartTime);
TimeDuration diff = now - gRecordedShutdownStartTime;
uint32_t diff2 = diff.ToMilliseconds();
int written = fprintf(f, "%d\n", diff2);
MozillaUnRegisterDebugFILE(f);
int rv = fclose(f);
if (written < 0 || rv != 0) {
tmpFile->Remove(false);
return;
}
nsCOMPtr<nsIFile> file;
if (NS_FAILED(NS_NewPathStringLocalFile(name, getter_AddRefs(file)))) {
return;
}
nsAutoString leafName;
if (NS_SUCCEEDED(file->GetLeafName(leafName))) {
tmpFile->RenameTo(nullptr, leafName);
}
}
} // namespace mozilla
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
//
// EXTERNALLY VISIBLE FUNCTIONS in mozilla::Telemetry::
// These are listed in Telemetry.h
namespace mozilla::Telemetry {
void Accumulate(HistogramID aID, const nsCString& aKey, uint32_t aSample) {
TelemetryHistogram::Accumulate(aID, aKey, aSample);
}
const char* GetHistogramName(HistogramID id) {
return TelemetryHistogram::GetHistogramName(id);
}
bool CanRecordBase() { return TelemetryImpl::CanRecordBase(); }
bool CanRecordExtended() { return TelemetryImpl::CanRecordExtended(); }
bool CanRecordReleaseData() { return TelemetryImpl::CanRecordReleaseData(); }
bool CanRecordPrereleaseData() {
return TelemetryImpl::CanRecordPrereleaseData();
}
void RecordSlowSQLStatement(const nsACString& statement,
const nsACString& dbName, uint32_t delay) {
TelemetryImpl::RecordSlowStatement(statement, dbName, delay);
}
void Init() {
// Make the service manager hold a long-lived reference to the service
nsCOMPtr<nsITelemetry> telemetryService =
do_GetService("@mozilla.org/base/telemetry;1");
MOZ_ASSERT(telemetryService);
}
void WriteFailedProfileLock(nsIFile* aProfileDir) {
nsCOMPtr<nsIFile> file;
nsresult rv = GetFailedProfileLockFile(getter_AddRefs(file), aProfileDir);
NS_ENSURE_SUCCESS_VOID(rv);
int64_t fileSize = 0;
rv = file->GetFileSize(&fileSize);
// It's expected that the file might not exist yet
if (NS_FAILED(rv) && rv != NS_ERROR_FILE_NOT_FOUND) {
return;
}
nsCOMPtr<nsIRandomAccessStream> fileRandomAccessStream;
rv = NS_NewLocalFileRandomAccessStream(getter_AddRefs(fileRandomAccessStream),
file, PR_RDWR | PR_CREATE_FILE, 0640);
NS_ENSURE_SUCCESS_VOID(rv);
NS_ENSURE_TRUE_VOID(fileSize <= kMaxFailedProfileLockFileSize);
unsigned int failedLockCount = 0;
if (fileSize > 0) {
nsCOMPtr<nsIInputStream> inStream =
do_QueryInterface(fileRandomAccessStream);
NS_ENSURE_TRUE_VOID(inStream);
if (!GetFailedLockCount(inStream, fileSize, failedLockCount)) {
failedLockCount = 0;
}
}
++failedLockCount;
nsAutoCString bufStr;
bufStr.AppendInt(static_cast<int>(failedLockCount));
// If we read in an existing failed lock count, we need to reset the file ptr
if (fileSize > 0) {
rv = fileRandomAccessStream->Seek(nsISeekableStream::NS_SEEK_SET, 0);
NS_ENSURE_SUCCESS_VOID(rv);
}
nsCOMPtr<nsIOutputStream> outStream =
do_QueryInterface(fileRandomAccessStream);
uint32_t bytesLeft = bufStr.Length();
const char* bytes = bufStr.get();
do {
uint32_t written = 0;
rv = outStream->Write(bytes, bytesLeft, &written);
if (NS_FAILED(rv)) {
break;
}
bytes += written;
bytesLeft -= written;
} while (bytesLeft > 0);
fileRandomAccessStream->SetEOF();
}
void InitIOReporting(nsIFile* aXreDir) {
// Never initialize twice
if (sTelemetryIOObserver) {
return;
}
sTelemetryIOObserver = new TelemetryIOInterposeObserver(aXreDir);
IOInterposer::Register(IOInterposeObserver::OpAllWithStaging,
sTelemetryIOObserver);
}
void SetProfileDir(nsIFile* aProfD) {
if (!sTelemetryIOObserver || !aProfD) {
return;
}
nsAutoString profDirPath;
nsresult rv = aProfD->GetPath(profDirPath);
if (NS_FAILED(rv)) {
return;
}
sTelemetryIOObserver->AddPath(profDirPath, u"{profile}"_ns);
}
void ShutdownTelemetry() { TelemetryImpl::ShutdownTelemetry(); }
} // namespace mozilla::Telemetry
NS_IMPL_COMPONENT_FACTORY(nsITelemetry) {
return TelemetryImpl::CreateTelemetryInstance().downcast<nsISupports>();
}
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