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-rw-r--r--contrib/llvm/lib/Support/Timer.cpp389
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diff --git a/contrib/llvm/lib/Support/Timer.cpp b/contrib/llvm/lib/Support/Timer.cpp
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+//===-- Timer.cpp - Interval Timing Support -------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Interval Timing implementation.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/Timer.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/Mutex.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+// CreateInfoOutputFile - Return a file stream to print our output on.
+namespace llvm { extern raw_ostream *CreateInfoOutputFile(); }
+
+// getLibSupportInfoOutputFilename - This ugly hack is brought to you courtesy
+// of constructor/destructor ordering being unspecified by C++. Basically the
+// problem is that a Statistic object gets destroyed, which ends up calling
+// 'GetLibSupportInfoOutputFile()' (below), which calls this function.
+// LibSupportInfoOutputFilename used to be a global variable, but sometimes it
+// would get destroyed before the Statistic, causing havoc to ensue. We "fix"
+// this by creating the string the first time it is needed and never destroying
+// it.
+static ManagedStatic<std::string> LibSupportInfoOutputFilename;
+static std::string &getLibSupportInfoOutputFilename() {
+ return *LibSupportInfoOutputFilename;
+}
+
+static ManagedStatic<sys::SmartMutex<true> > TimerLock;
+
+namespace {
+ static cl::opt<bool>
+ TrackSpace("track-memory", cl::desc("Enable -time-passes memory "
+ "tracking (this may be slow)"),
+ cl::Hidden);
+
+ static cl::opt<std::string, true>
+ InfoOutputFilename("info-output-file", cl::value_desc("filename"),
+ cl::desc("File to append -stats and -timer output to"),
+ cl::Hidden, cl::location(getLibSupportInfoOutputFilename()));
+}
+
+// CreateInfoOutputFile - Return a file stream to print our output on.
+raw_ostream *llvm::CreateInfoOutputFile() {
+ const std::string &OutputFilename = getLibSupportInfoOutputFilename();
+ if (OutputFilename.empty())
+ return new raw_fd_ostream(2, false); // stderr.
+ if (OutputFilename == "-")
+ return new raw_fd_ostream(1, false); // stdout.
+
+ // Append mode is used because the info output file is opened and closed
+ // each time -stats or -time-passes wants to print output to it. To
+ // compensate for this, the test-suite Makefiles have code to delete the
+ // info output file before running commands which write to it.
+ std::string Error;
+ raw_ostream *Result = new raw_fd_ostream(OutputFilename.c_str(),
+ Error, raw_fd_ostream::F_Append);
+ if (Error.empty())
+ return Result;
+
+ errs() << "Error opening info-output-file '"
+ << OutputFilename << " for appending!\n";
+ delete Result;
+ return new raw_fd_ostream(2, false); // stderr.
+}
+
+
+static TimerGroup *DefaultTimerGroup = 0;
+static TimerGroup *getDefaultTimerGroup() {
+ TimerGroup *tmp = DefaultTimerGroup;
+ sys::MemoryFence();
+ if (tmp) return tmp;
+
+ llvm_acquire_global_lock();
+ tmp = DefaultTimerGroup;
+ if (!tmp) {
+ tmp = new TimerGroup("Miscellaneous Ungrouped Timers");
+ sys::MemoryFence();
+ DefaultTimerGroup = tmp;
+ }
+ llvm_release_global_lock();
+
+ return tmp;
+}
+
+//===----------------------------------------------------------------------===//
+// Timer Implementation
+//===----------------------------------------------------------------------===//
+
+void Timer::init(StringRef N) {
+ assert(TG == 0 && "Timer already initialized");
+ Name.assign(N.begin(), N.end());
+ Started = false;
+ TG = getDefaultTimerGroup();
+ TG->addTimer(*this);
+}
+
+void Timer::init(StringRef N, TimerGroup &tg) {
+ assert(TG == 0 && "Timer already initialized");
+ Name.assign(N.begin(), N.end());
+ Started = false;
+ TG = &tg;
+ TG->addTimer(*this);
+}
+
+Timer::~Timer() {
+ if (!TG) return; // Never initialized, or already cleared.
+ TG->removeTimer(*this);
+}
+
+static inline size_t getMemUsage() {
+ if (!TrackSpace) return 0;
+ return sys::Process::GetMallocUsage();
+}
+
+TimeRecord TimeRecord::getCurrentTime(bool Start) {
+ TimeRecord Result;
+ sys::TimeValue now(0,0), user(0,0), sys(0,0);
+
+ if (Start) {
+ Result.MemUsed = getMemUsage();
+ sys::Process::GetTimeUsage(now, user, sys);
+ } else {
+ sys::Process::GetTimeUsage(now, user, sys);
+ Result.MemUsed = getMemUsage();
+ }
+
+ Result.WallTime = now.seconds() + now.microseconds() / 1000000.0;
+ Result.UserTime = user.seconds() + user.microseconds() / 1000000.0;
+ Result.SystemTime = sys.seconds() + sys.microseconds() / 1000000.0;
+ return Result;
+}
+
+static ManagedStatic<std::vector<Timer*> > ActiveTimers;
+
+void Timer::startTimer() {
+ Started = true;
+ ActiveTimers->push_back(this);
+ Time -= TimeRecord::getCurrentTime(true);
+}
+
+void Timer::stopTimer() {
+ Time += TimeRecord::getCurrentTime(false);
+
+ if (ActiveTimers->back() == this) {
+ ActiveTimers->pop_back();
+ } else {
+ std::vector<Timer*>::iterator I =
+ std::find(ActiveTimers->begin(), ActiveTimers->end(), this);
+ assert(I != ActiveTimers->end() && "stop but no startTimer?");
+ ActiveTimers->erase(I);
+ }
+}
+
+static void printVal(double Val, double Total, raw_ostream &OS) {
+ if (Total < 1e-7) // Avoid dividing by zero.
+ OS << " ----- ";
+ else
+ OS << format(" %7.4f (%5.1f%%)", Val, Val*100/Total);
+}
+
+void TimeRecord::print(const TimeRecord &Total, raw_ostream &OS) const {
+ if (Total.getUserTime())
+ printVal(getUserTime(), Total.getUserTime(), OS);
+ if (Total.getSystemTime())
+ printVal(getSystemTime(), Total.getSystemTime(), OS);
+ if (Total.getProcessTime())
+ printVal(getProcessTime(), Total.getProcessTime(), OS);
+ printVal(getWallTime(), Total.getWallTime(), OS);
+
+ OS << " ";
+
+ if (Total.getMemUsed())
+ OS << format("%9" PRId64 " ", (int64_t)getMemUsed());
+}
+
+
+//===----------------------------------------------------------------------===//
+// NamedRegionTimer Implementation
+//===----------------------------------------------------------------------===//
+
+namespace {
+
+typedef StringMap<Timer> Name2TimerMap;
+
+class Name2PairMap {
+ StringMap<std::pair<TimerGroup*, Name2TimerMap> > Map;
+public:
+ ~Name2PairMap() {
+ for (StringMap<std::pair<TimerGroup*, Name2TimerMap> >::iterator
+ I = Map.begin(), E = Map.end(); I != E; ++I)
+ delete I->second.first;
+ }
+
+ Timer &get(StringRef Name, StringRef GroupName) {
+ sys::SmartScopedLock<true> L(*TimerLock);
+
+ std::pair<TimerGroup*, Name2TimerMap> &GroupEntry = Map[GroupName];
+
+ if (!GroupEntry.first)
+ GroupEntry.first = new TimerGroup(GroupName);
+
+ Timer &T = GroupEntry.second[Name];
+ if (!T.isInitialized())
+ T.init(Name, *GroupEntry.first);
+ return T;
+ }
+};
+
+}
+
+static ManagedStatic<Name2TimerMap> NamedTimers;
+static ManagedStatic<Name2PairMap> NamedGroupedTimers;
+
+static Timer &getNamedRegionTimer(StringRef Name) {
+ sys::SmartScopedLock<true> L(*TimerLock);
+
+ Timer &T = (*NamedTimers)[Name];
+ if (!T.isInitialized())
+ T.init(Name);
+ return T;
+}
+
+NamedRegionTimer::NamedRegionTimer(StringRef Name,
+ bool Enabled)
+ : TimeRegion(!Enabled ? 0 : &getNamedRegionTimer(Name)) {}
+
+NamedRegionTimer::NamedRegionTimer(StringRef Name, StringRef GroupName,
+ bool Enabled)
+ : TimeRegion(!Enabled ? 0 : &NamedGroupedTimers->get(Name, GroupName)) {}
+
+//===----------------------------------------------------------------------===//
+// TimerGroup Implementation
+//===----------------------------------------------------------------------===//
+
+/// TimerGroupList - This is the global list of TimerGroups, maintained by the
+/// TimerGroup ctor/dtor and is protected by the TimerLock lock.
+static TimerGroup *TimerGroupList = 0;
+
+TimerGroup::TimerGroup(StringRef name)
+ : Name(name.begin(), name.end()), FirstTimer(0) {
+
+ // Add the group to TimerGroupList.
+ sys::SmartScopedLock<true> L(*TimerLock);
+ if (TimerGroupList)
+ TimerGroupList->Prev = &Next;
+ Next = TimerGroupList;
+ Prev = &TimerGroupList;
+ TimerGroupList = this;
+}
+
+TimerGroup::~TimerGroup() {
+ // If the timer group is destroyed before the timers it owns, accumulate and
+ // print the timing data.
+ while (FirstTimer != 0)
+ removeTimer(*FirstTimer);
+
+ // Remove the group from the TimerGroupList.
+ sys::SmartScopedLock<true> L(*TimerLock);
+ *Prev = Next;
+ if (Next)
+ Next->Prev = Prev;
+}
+
+
+void TimerGroup::removeTimer(Timer &T) {
+ sys::SmartScopedLock<true> L(*TimerLock);
+
+ // If the timer was started, move its data to TimersToPrint.
+ if (T.Started)
+ TimersToPrint.push_back(std::make_pair(T.Time, T.Name));
+
+ T.TG = 0;
+
+ // Unlink the timer from our list.
+ *T.Prev = T.Next;
+ if (T.Next)
+ T.Next->Prev = T.Prev;
+
+ // Print the report when all timers in this group are destroyed if some of
+ // them were started.
+ if (FirstTimer != 0 || TimersToPrint.empty())
+ return;
+
+ raw_ostream *OutStream = CreateInfoOutputFile();
+ PrintQueuedTimers(*OutStream);
+ delete OutStream; // Close the file.
+}
+
+void TimerGroup::addTimer(Timer &T) {
+ sys::SmartScopedLock<true> L(*TimerLock);
+
+ // Add the timer to our list.
+ if (FirstTimer)
+ FirstTimer->Prev = &T.Next;
+ T.Next = FirstTimer;
+ T.Prev = &FirstTimer;
+ FirstTimer = &T;
+}
+
+void TimerGroup::PrintQueuedTimers(raw_ostream &OS) {
+ // Sort the timers in descending order by amount of time taken.
+ std::sort(TimersToPrint.begin(), TimersToPrint.end());
+
+ TimeRecord Total;
+ for (unsigned i = 0, e = TimersToPrint.size(); i != e; ++i)
+ Total += TimersToPrint[i].first;
+
+ // Print out timing header.
+ OS << "===" << std::string(73, '-') << "===\n";
+ // Figure out how many spaces to indent TimerGroup name.
+ unsigned Padding = (80-Name.length())/2;
+ if (Padding > 80) Padding = 0; // Don't allow "negative" numbers
+ OS.indent(Padding) << Name << '\n';
+ OS << "===" << std::string(73, '-') << "===\n";
+
+ // If this is not an collection of ungrouped times, print the total time.
+ // Ungrouped timers don't really make sense to add up. We still print the
+ // TOTAL line to make the percentages make sense.
+ if (this != DefaultTimerGroup)
+ OS << format(" Total Execution Time: %5.4f seconds (%5.4f wall clock)\n",
+ Total.getProcessTime(), Total.getWallTime());
+ OS << '\n';
+
+ if (Total.getUserTime())
+ OS << " ---User Time---";
+ if (Total.getSystemTime())
+ OS << " --System Time--";
+ if (Total.getProcessTime())
+ OS << " --User+System--";
+ OS << " ---Wall Time---";
+ if (Total.getMemUsed())
+ OS << " ---Mem---";
+ OS << " --- Name ---\n";
+
+ // Loop through all of the timing data, printing it out.
+ for (unsigned i = 0, e = TimersToPrint.size(); i != e; ++i) {
+ const std::pair<TimeRecord, std::string> &Entry = TimersToPrint[e-i-1];
+ Entry.first.print(Total, OS);
+ OS << Entry.second << '\n';
+ }
+
+ Total.print(Total, OS);
+ OS << "Total\n\n";
+ OS.flush();
+
+ TimersToPrint.clear();
+}
+
+/// print - Print any started timers in this group and zero them.
+void TimerGroup::print(raw_ostream &OS) {
+ sys::SmartScopedLock<true> L(*TimerLock);
+
+ // See if any of our timers were started, if so add them to TimersToPrint and
+ // reset them.
+ for (Timer *T = FirstTimer; T; T = T->Next) {
+ if (!T->Started) continue;
+ TimersToPrint.push_back(std::make_pair(T->Time, T->Name));
+
+ // Clear out the time.
+ T->Started = 0;
+ T->Time = TimeRecord();
+ }
+
+ // If any timers were started, print the group.
+ if (!TimersToPrint.empty())
+ PrintQueuedTimers(OS);
+}
+
+/// printAll - This static method prints all timers and clears them all out.
+void TimerGroup::printAll(raw_ostream &OS) {
+ sys::SmartScopedLock<true> L(*TimerLock);
+
+ for (TimerGroup *TG = TimerGroupList; TG; TG = TG->Next)
+ TG->print(OS);
+}
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