Remove SPS profiler.

- Conditionals and code blocks. (MOZ_ENABLE_PROFILER_SPS)
- Stub out several profiler-only functions.

1 files changed, 0 insertions, 324 deletions

diff --git a/tools/memory-profiler/MemoryProfiler.cpp b/tools/memory-profiler/MemoryProfiler.cpp
deleted file mode 100644
index c2b8cbd1d..000000000
--- a/tools/memory-profiler/MemoryProfiler.cpp
+++ /dev/null
@@ -1,324 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=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 "MemoryProfiler.h"
-
-#include <cmath>
-#include <cstdlib>
-
-#include "mozilla/ClearOnShutdown.h"
-#include "mozilla/Move.h"
-#include "mozilla/TimeStamp.h"
-#include "mozilla/UniquePtr.h"
-
-#include "GCHeapProfilerImpl.h"
-#include "GeckoProfiler.h"
-#include "NativeProfilerImpl.h"
-#include "UncensoredAllocator.h"
-#include "js/TypeDecls.h"
-#include "jsfriendapi.h"
-#include "nsIDOMClassInfo.h"
-#include "nsIGlobalObject.h"
-#include "prtime.h"
-#include "xpcprivate.h"
-
-namespace mozilla {
-
-#define MEMORY_PROFILER_SAMPLE_SIZE 65536
-#define BACKTRACE_BUFFER_SIZE 16384
-
-ProfilerImpl::ProfilerImpl()
-  : mSampleSize(MEMORY_PROFILER_SAMPLE_SIZE)
-{
-  mLog1minusP = std::log(1.0 - 1.0 / mSampleSize);
-  mRemainingBytes = std::floor(std::log(1.0 - DRandom()) / mLog1minusP);
-}
-
-nsTArray<nsCString>
-ProfilerImpl::GetStacktrace()
-{
-  nsTArray<nsCString> trace;
-  auto output = MakeUnique<char[]>(BACKTRACE_BUFFER_SIZE);
-
-  profiler_get_backtrace_noalloc(output.get(), BACKTRACE_BUFFER_SIZE);
-  for (const char* p = output.get(); *p; p += strlen(p) + 1) {
-    trace.AppendElement()->Assign(p);
-  }
-
-  return trace;
-}
-
-// Generate a random number in [0, 1).
-double
-ProfilerImpl::DRandom()
-{
-  return double(((uint64_t(std::rand()) & ((1 << 26) - 1)) << 27) +
-                (uint64_t(std::rand()) & ((1 << 27) - 1)))
-    / (uint64_t(1) << 53);
-}
-
-size_t
-ProfilerImpl::AddBytesSampled(uint32_t aBytes)
-{
-  size_t nSamples = 0;
-  while (mRemainingBytes <= aBytes) {
-    mRemainingBytes += std::floor(std::log(1.0 - DRandom()) / mLog1minusP);
-    nSamples++;
-  }
-  mRemainingBytes -= aBytes;
-  return nSamples;
-}
-
-NS_IMPL_ISUPPORTS(MemoryProfiler, nsIMemoryProfiler)
-
-PRLock* MemoryProfiler::sLock;
-uint32_t MemoryProfiler::sProfileContextCount;
-StaticAutoPtr<NativeProfilerImpl> MemoryProfiler::sNativeProfiler;
-StaticAutoPtr<JSContextProfilerMap> MemoryProfiler::sJSContextProfilerMap;
-TimeStamp MemoryProfiler::sStartTime;
-
-void
-MemoryProfiler::InitOnce()
-{
-  MOZ_ASSERT(NS_IsMainThread());
-
-  static bool initialized = false;
-
-  if (!initialized) {
-    MallocHook::Initialize();
-    sLock = PR_NewLock();
-    sProfileContextCount = 0;
-    sJSContextProfilerMap = new JSContextProfilerMap();
-    ClearOnShutdown(&sJSContextProfilerMap);
-    ClearOnShutdown(&sNativeProfiler);
-    std::srand(PR_Now());
-    bool ignored;
-    sStartTime = TimeStamp::ProcessCreation(ignored);
-    initialized = true;
-  }
-}
-
-NS_IMETHODIMP
-MemoryProfiler::StartProfiler()
-{
-  InitOnce();
-  AutoUseUncensoredAllocator ua;
-  AutoMPLock lock(sLock);
-  JSContext* context = XPCJSContext::Get()->Context();
-  ProfilerForJSContext profiler;
-  if (!sJSContextProfilerMap->Get(context, &profiler) ||
-      !profiler.mEnabled) {
-    if (sProfileContextCount == 0) {
-      js::EnableContextProfilingStack(context, true);
-      if (!sNativeProfiler) {
-        sNativeProfiler = new NativeProfilerImpl();
-      }
-      MemProfiler::SetNativeProfiler(sNativeProfiler);
-    }
-    GCHeapProfilerImpl* gp = new GCHeapProfilerImpl();
-    profiler.mEnabled = true;
-    profiler.mProfiler = gp;
-    sJSContextProfilerMap->Put(context, profiler);
-    MemProfiler::GetMemProfiler(context)->start(gp);
-    if (sProfileContextCount == 0) {
-      MallocHook::Enable(sNativeProfiler);
-    }
-    sProfileContextCount++;
-  }
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MemoryProfiler::StopProfiler()
-{
-  InitOnce();
-  AutoUseUncensoredAllocator ua;
-  AutoMPLock lock(sLock);
-  JSContext* context = XPCJSContext::Get()->Context();
-  ProfilerForJSContext profiler;
-  if (sJSContextProfilerMap->Get(context, &profiler) &&
-      profiler.mEnabled) {
-    MemProfiler::GetMemProfiler(context)->stop();
-    if (--sProfileContextCount == 0) {
-      MallocHook::Disable();
-      MemProfiler::SetNativeProfiler(nullptr);
-      js::EnableContextProfilingStack(context, false);
-    }
-    profiler.mEnabled = false;
-    sJSContextProfilerMap->Put(context, profiler);
-  }
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-MemoryProfiler::ResetProfiler()
-{
-  InitOnce();
-  AutoUseUncensoredAllocator ua;
-  AutoMPLock lock(sLock);
-  JSContext* context = XPCJSContext::Get()->Context();
-  ProfilerForJSContext profiler;
-  if (!sJSContextProfilerMap->Get(context, &profiler) ||
-      !profiler.mEnabled) {
-    delete profiler.mProfiler;
-    profiler.mProfiler = nullptr;
-    sJSContextProfilerMap->Put(context, profiler);
-  }
-  if (sProfileContextCount == 0) {
-    sNativeProfiler = nullptr;
-  }
-  return NS_OK;
-}
-
-struct MergedTraces
-{
-  nsTArray<nsCString> mNames;
-  nsTArray<TrieNode> mTraces;
-  nsTArray<AllocEvent> mEvents;
-};
-
-// Merge events and corresponding traces and names.
-static MergedTraces
-MergeResults(const nsTArray<nsCString>& names0,
-             const nsTArray<TrieNode>& traces0,
-             const nsTArray<AllocEvent>& events0,
-             const nsTArray<nsCString>& names1,
-             const nsTArray<TrieNode>& traces1,
-             const nsTArray<AllocEvent>& events1)
-{
-  NodeIndexMap<nsCStringHashKey, nsCString> names;
-  NodeIndexMap<nsGenericHashKey<TrieNode>, TrieNode> traces;
-  nsTArray<AllocEvent> events;
-
-  nsTArray<size_t> names1Tonames0(names1.Length());
-  nsTArray<size_t> traces1Totraces0(traces1.Length());
-
-  // Merge names.
-  for (auto& i: names0) {
-    names.Insert(i);
-  }
-  for (auto& i: names1) {
-    names1Tonames0.AppendElement(names.Insert(i));
-  }
-
-  // Merge traces. Note that traces1[i].parentIdx < i for all i > 0.
-  for (auto& i: traces0) {
-    traces.Insert(i);
-  }
-  traces1Totraces0.AppendElement(0);
-  for (size_t i = 1; i < traces1.Length(); i++) {
-    TrieNode node = traces1[i];
-    node.parentIdx = traces1Totraces0[node.parentIdx];
-    node.nameIdx = names1Tonames0[node.nameIdx];
-    traces1Totraces0.AppendElement(traces.Insert(node));
-  }
-
-  // Merge the events according to timestamps.
-  auto p0 = events0.begin();
-  auto p1 = events1.begin();
-
-  while (p0 != events0.end() && p1 != events1.end()) {
-    if (p0->mTimestamp < p1->mTimestamp) {
-      events.AppendElement(*p0++);
-    } else {
-      events.AppendElement(*p1++);
-      events.LastElement().mTraceIdx =
-        traces1Totraces0[events.LastElement().mTraceIdx];
-    }
-  }
-
-  while (p0 != events0.end()) {
-    events.AppendElement(*p0++);
-  }
-
-  while (p1 != events1.end()) {
-    events.AppendElement(*p1++);
-    events.LastElement().mTraceIdx =
-      traces1Totraces0[events.LastElement().mTraceIdx];
-  }
-
-  return MergedTraces{names.Serialize(), traces.Serialize(), Move(events)};
-}
-
-NS_IMETHODIMP
-MemoryProfiler::GetResults(JSContext* cx, JS::MutableHandle<JS::Value> aResult)
-{
-  InitOnce();
-  AutoUseUncensoredAllocator ua;
-  AutoMPLock lock(sLock);
-  JSContext* context = XPCJSContext::Get()->Context();
-  // Getting results when the profiler is running is not allowed.
-  if (sProfileContextCount > 0) {
-    return NS_OK;
-  }
-  // Return immediately when native profiler does not exist.
-  if (!sNativeProfiler) {
-    return NS_OK;
-  }
-  // Return immediately when there's no result in current context.
-  ProfilerForJSContext profiler;
-  if (!sJSContextProfilerMap->Get(context, &profiler) ||
-      !profiler.mProfiler) {
-    return NS_OK;
-  }
-  GCHeapProfilerImpl* gp = profiler.mProfiler;
-
-  auto results = MergeResults(gp->GetNames(), gp->GetTraces(), gp->GetEvents(),
-                              sNativeProfiler->GetNames(),
-                              sNativeProfiler->GetTraces(),
-                              sNativeProfiler->GetEvents());
-  const nsTArray<nsCString>& names = results.mNames;
-  const nsTArray<TrieNode>& traces = results.mTraces;
-  const nsTArray<AllocEvent>& events = results.mEvents;
-
-  JS::RootedObject jsnames(cx, JS_NewArrayObject(cx, names.Length()));
-  JS::RootedObject jstraces(cx, JS_NewArrayObject(cx, traces.Length()));
-  JS::RootedObject jsevents(cx, JS_NewArrayObject(cx, events.Length()));
-
-  for (size_t i = 0; i < names.Length(); i++) {
-    JS::RootedString name(cx, JS_NewStringCopyZ(cx, names[i].get()));
-    JS_SetElement(cx, jsnames, i, name);
-  }
-
-  for (size_t i = 0; i < traces.Length(); i++) {
-    JS::RootedObject tn(cx, JS_NewPlainObject(cx));
-    JS::RootedValue nameIdx(cx, JS_NumberValue(traces[i].nameIdx));
-    JS::RootedValue parentIdx(cx, JS_NumberValue(traces[i].parentIdx));
-    JS_SetProperty(cx, tn, "nameIdx", nameIdx);
-    JS_SetProperty(cx, tn, "parentIdx", parentIdx);
-    JS_SetElement(cx, jstraces, i, tn);
-  }
-
-  int i = 0;
-  for (auto ent: events) {
-    if (ent.mSize == 0) {
-      continue;
-    }
-    MOZ_ASSERT(!sStartTime.IsNull());
-    double time = (ent.mTimestamp - sStartTime).ToMilliseconds();
-    JS::RootedObject tn(cx, JS_NewPlainObject(cx));
-    JS::RootedValue size(cx, JS_NumberValue(ent.mSize));
-    JS::RootedValue traceIdx(cx, JS_NumberValue(ent.mTraceIdx));
-    JS::RootedValue timestamp(cx, JS_NumberValue(time));
-    JS_SetProperty(cx, tn, "size", size);
-    JS_SetProperty(cx, tn, "traceIdx", traceIdx);
-    JS_SetProperty(cx, tn, "timestamp", timestamp);
-    JS_SetElement(cx, jsevents, i++, tn);
-  }
-  JS_SetArrayLength(cx, jsevents, i);
-
-  JS::RootedObject result(cx, JS_NewPlainObject(cx));
-  JS::RootedValue objnames(cx, ObjectOrNullValue(jsnames));
-  JS_SetProperty(cx, result, "names", objnames);
-  JS::RootedValue objtraces(cx, ObjectOrNullValue(jstraces));
-  JS_SetProperty(cx, result, "traces", objtraces);
-  JS::RootedValue objevents(cx, ObjectOrNullValue(jsevents));
-  JS_SetProperty(cx, result, "events", objevents);
-  aResult.setObject(*result);
-  return NS_OK;
-}
-
-} // namespace mozilla