//===----------------------------------------------------------------------===//
#include "llvm/Support/Timer.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/ADT/StringMap.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.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"
-#include "llvm/Support/Format.h"
-#include "llvm/System/Process.h"
-#include <algorithm>
-#include <functional>
-#include <map>
using namespace llvm;
-// GetLibSupportInfoOutputFile - Return a file stream to print our output on.
-namespace llvm { extern raw_ostream *GetLibSupportInfoOutputFile(); }
-
// 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
cl::Hidden, cl::location(getLibSupportInfoOutputFilename()));
}
-static TimerGroup *DefaultTimerGroup = 0;
+// Return a file stream to print our output on.
+std::unique_ptr<raw_fd_ostream> llvm::CreateInfoOutputFile() {
+ const std::string &OutputFilename = getLibSupportInfoOutputFilename();
+ if (OutputFilename.empty())
+ return llvm::make_unique<raw_fd_ostream>(2, false); // stderr.
+ if (OutputFilename == "-")
+ return llvm::make_unique<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::error_code EC;
+ auto Result = llvm::make_unique<raw_fd_ostream>(
+ OutputFilename, EC, sys::fs::F_Append | sys::fs::F_Text);
+ if (!EC)
+ return Result;
+
+ errs() << "Error opening info-output-file '"
+ << OutputFilename << " for appending!\n";
+ return llvm::make_unique<raw_fd_ostream>(2, false); // stderr.
+}
+
+
+static TimerGroup *DefaultTimerGroup = nullptr;
static TimerGroup *getDefaultTimerGroup() {
- TimerGroup* tmp = DefaultTimerGroup;
+ TimerGroup *tmp = DefaultTimerGroup;
sys::MemoryFence();
+ if (tmp) return tmp;
+
+ sys::SmartScopedLock<true> Lock(*TimerLock);
+ tmp = DefaultTimerGroup;
if (!tmp) {
- llvm_acquire_global_lock();
- tmp = DefaultTimerGroup;
- if (!tmp) {
- tmp = new TimerGroup("Miscellaneous Ungrouped Timers");
- sys::MemoryFence();
- DefaultTimerGroup = tmp;
- }
- llvm_release_global_lock();
+ tmp = new TimerGroup("Miscellaneous Ungrouped Timers");
+ sys::MemoryFence();
+ DefaultTimerGroup = tmp;
}
-
- return tmp;
-}
-Timer::Timer(const std::string &N)
- : Elapsed(0), UserTime(0), SystemTime(0), MemUsed(0), PeakMem(0), Name(N),
- Started(false), TG(getDefaultTimerGroup()) {
- TG->addTimer();
+ return tmp;
}
-Timer::Timer(const std::string &N, TimerGroup &tg)
- : Elapsed(0), UserTime(0), SystemTime(0), MemUsed(0), PeakMem(0), Name(N),
- Started(false), TG(&tg) {
- TG->addTimer();
-}
+//===----------------------------------------------------------------------===//
+// Timer Implementation
+//===----------------------------------------------------------------------===//
-Timer::Timer(const Timer &T) {
- TG = T.TG;
- if (TG) TG->addTimer();
- operator=(T);
+void Timer::init(StringRef N) {
+ init(N, *getDefaultTimerGroup());
}
-
-// Copy ctor, initialize with no TG member.
-Timer::Timer(bool, const Timer &T) {
- TG = T.TG; // Avoid assertion in operator=
- operator=(T); // Copy contents
- TG = 0;
+void Timer::init(StringRef N, TimerGroup &tg) {
+ assert(!TG && "Timer already initialized");
+ Name.assign(N.begin(), N.end());
+ Started = false;
+ TG = &tg;
+ TG->addTimer(*this);
}
-
Timer::~Timer() {
- if (TG) {
- if (Started) {
- Started = false;
- TG->addTimerToPrint(*this);
- }
- TG->removeTimer();
- }
+ if (!TG) return; // Never initialized, or already cleared.
+ TG->removeTimer(*this);
}
static inline size_t getMemUsage() {
- if (TrackSpace)
- return sys::Process::GetMallocUsage();
- return 0;
+ if (!TrackSpace) return 0;
+ return sys::Process::GetMallocUsage();
}
-struct TimeRecord {
- double Elapsed, UserTime, SystemTime;
- ssize_t MemUsed;
-};
-
-static TimeRecord getTimeRecord(bool Start) {
+TimeRecord TimeRecord::getCurrentTime(bool Start) {
TimeRecord Result;
-
- sys::TimeValue now(0,0);
- sys::TimeValue user(0,0);
- sys::TimeValue sys(0,0);
-
- ssize_t MemUsed = 0;
+ sys::TimeValue now(0,0), user(0,0), sys(0,0);
+
if (Start) {
- MemUsed = getMemUsage();
- sys::Process::GetTimeUsage(now,user,sys);
+ Result.MemUsed = getMemUsage();
+ sys::Process::GetTimeUsage(now, user, sys);
} else {
- sys::Process::GetTimeUsage(now,user,sys);
- MemUsed = getMemUsage();
+ sys::Process::GetTimeUsage(now, user, sys);
+ Result.MemUsed = getMemUsage();
}
- Result.Elapsed = now.seconds() + now.microseconds() / 1000000.0;
- Result.UserTime = user.seconds() + user.microseconds() / 1000000.0;
- Result.SystemTime = sys.seconds() + sys.microseconds() / 1000000.0;
- Result.MemUsed = MemUsed;
-
+ 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() {
- sys::SmartScopedLock<true> L(Lock);
Started = true;
ActiveTimers->push_back(this);
- TimeRecord TR = getTimeRecord(true);
- Elapsed -= TR.Elapsed;
- UserTime -= TR.UserTime;
- SystemTime -= TR.SystemTime;
- MemUsed -= TR.MemUsed;
- PeakMemBase = TR.MemUsed;
+ Time -= TimeRecord::getCurrentTime(true);
}
void Timer::stopTimer() {
- sys::SmartScopedLock<true> L(Lock);
- TimeRecord TR = getTimeRecord(false);
- Elapsed += TR.Elapsed;
- UserTime += TR.UserTime;
- SystemTime += TR.SystemTime;
- MemUsed += TR.MemUsed;
+ Time += TimeRecord::getCurrentTime(false);
if (ActiveTimers->back() == this) {
ActiveTimers->pop_back();
}
}
-void Timer::sum(const Timer &T) {
- if (&T < this) {
- T.Lock.acquire();
- Lock.acquire();
- } else {
- Lock.acquire();
- T.Lock.acquire();
- }
+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);
- Elapsed += T.Elapsed;
- UserTime += T.UserTime;
- SystemTime += T.SystemTime;
- MemUsed += T.MemUsed;
- PeakMem += T.PeakMem;
+ OS << " ";
- if (&T < this) {
- T.Lock.release();
- Lock.release();
- } else {
- Lock.release();
- T.Lock.release();
- }
+ if (Total.getMemUsed())
+ OS << format("%9" PRId64 " ", (int64_t)getMemUsed());
}
-/// addPeakMemoryMeasurement - This method should be called whenever memory
-/// usage needs to be checked. It adds a peak memory measurement to the
-/// currently active timers, which will be printed when the timer group prints
-///
-void Timer::addPeakMemoryMeasurement() {
- size_t MemUsed = getMemUsage();
-
- for (std::vector<Timer*>::iterator I = ActiveTimers->begin(),
- E = ActiveTimers->end(); I != E; ++I) {
- (*I)->Lock.acquire();
- (*I)->PeakMem = std::max((*I)->PeakMem, MemUsed-(*I)->PeakMemBase);
- (*I)->Lock.release();
- }
-}
//===----------------------------------------------------------------------===//
// NamedRegionTimer Implementation
namespace {
-typedef std::map<std::string, Timer> Name2Timer;
-typedef std::map<std::string, std::pair<TimerGroup, Name2Timer> > Name2Pair;
-
-}
+typedef StringMap<Timer> Name2TimerMap;
-static ManagedStatic<Name2Timer> NamedTimers;
-
-static ManagedStatic<Name2Pair> NamedGroupedTimers;
-
-static Timer &getNamedRegionTimer(const std::string &Name) {
- sys::SmartScopedLock<true> L(*TimerLock);
- Name2Timer::iterator I = NamedTimers->find(Name);
- if (I != NamedTimers->end())
- return I->second;
+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;
+ }
+};
- return NamedTimers->insert(I, std::make_pair(Name, Timer(Name)))->second;
}
-static Timer &getNamedRegionTimer(const std::string &Name,
- const std::string &GroupName) {
- sys::SmartScopedLock<true> L(*TimerLock);
-
- Name2Pair::iterator I = NamedGroupedTimers->find(GroupName);
- if (I == NamedGroupedTimers->end()) {
- TimerGroup TG(GroupName);
- std::pair<TimerGroup, Name2Timer> Pair(TG, Name2Timer());
- I = NamedGroupedTimers->insert(I, std::make_pair(GroupName, Pair));
- }
-
- Name2Timer::iterator J = I->second.second.find(Name);
- if (J == I->second.second.end())
- J = I->second.second.insert(J,
- std::make_pair(Name,
- Timer(Name,
- I->second.first)));
+static ManagedStatic<Name2TimerMap> NamedTimers;
+static ManagedStatic<Name2PairMap> NamedGroupedTimers;
- return J->second;
+static Timer &getNamedRegionTimer(StringRef Name) {
+ sys::SmartScopedLock<true> L(*TimerLock);
+
+ Timer &T = (*NamedTimers)[Name];
+ if (!T.isInitialized())
+ T.init(Name);
+ return T;
}
-NamedRegionTimer::NamedRegionTimer(const std::string &Name)
- : TimeRegion(getNamedRegionTimer(Name)) {}
+NamedRegionTimer::NamedRegionTimer(StringRef Name,
+ bool Enabled)
+ : TimeRegion(!Enabled ? nullptr : &getNamedRegionTimer(Name)) {}
-NamedRegionTimer::NamedRegionTimer(const std::string &Name,
- const std::string &GroupName)
- : TimeRegion(getNamedRegionTimer(Name, GroupName)) {}
+NamedRegionTimer::NamedRegionTimer(StringRef Name, StringRef GroupName,
+ bool Enabled)
+ : TimeRegion(!Enabled ? nullptr : &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 = nullptr;
-static void printVal(double Val, double Total, raw_ostream &OS) {
- if (Total < 1e-7) // Avoid dividing by zero...
- OS << " ----- ";
- else {
- OS << " " << format("%7.4f", Val) << " (";
- OS << format("%5.1f", Val*100/Total) << "%)";
- }
+TimerGroup::TimerGroup(StringRef name)
+ : Name(name.begin(), name.end()), FirstTimer(nullptr) {
+
+ // Add the group to TimerGroupList.
+ sys::SmartScopedLock<true> L(*TimerLock);
+ if (TimerGroupList)
+ TimerGroupList->Prev = &Next;
+ Next = TimerGroupList;
+ Prev = &TimerGroupList;
+ TimerGroupList = this;
}
-void Timer::print(const Timer &Total, raw_ostream &OS) {
- if (&Total < this) {
- Total.Lock.acquire();
- Lock.acquire();
- } else {
- Lock.acquire();
- Total.Lock.acquire();
- }
+TimerGroup::~TimerGroup() {
+ // If the timer group is destroyed before the timers it owns, accumulate and
+ // print the timing data.
+ while (FirstTimer)
+ removeTimer(*FirstTimer);
- if (Total.UserTime)
- printVal(UserTime, Total.UserTime, OS);
- if (Total.SystemTime)
- printVal(SystemTime, Total.SystemTime, OS);
- if (Total.getProcessTime())
- printVal(getProcessTime(), Total.getProcessTime(), OS);
- printVal(Elapsed, Total.Elapsed, OS);
+ // Remove the group from the TimerGroupList.
+ sys::SmartScopedLock<true> L(*TimerLock);
+ *Prev = Next;
+ if (Next)
+ Next->Prev = Prev;
+}
- OS << " ";
- if (Total.MemUsed) {
- OS << format("%9lld", (long long)MemUsed) << " ";
- }
- if (Total.PeakMem) {
- if (PeakMem) {
- OS << format("%9lld", (long long)PeakMem) << " ";
- } else
- OS << " ";
- }
- OS << Name << "\n";
+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));
- Started = false; // Once printed, don't print again
+ T.TG = nullptr;
- if (&Total < this) {
- Total.Lock.release();
- Lock.release();
- } else {
- Lock.release();
- Total.Lock.release();
- }
+ // 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 || TimersToPrint.empty())
+ return;
+
+ std::unique_ptr<raw_ostream> OutStream = CreateInfoOutputFile();
+ PrintQueuedTimers(*OutStream);
}
-// GetLibSupportInfoOutputFile - Return a file stream to print our output on...
-raw_ostream *
-llvm::GetLibSupportInfoOutputFile() {
- std::string &LibSupportInfoOutputFilename = getLibSupportInfoOutputFilename();
- if (LibSupportInfoOutputFilename.empty())
- return &errs();
- if (LibSupportInfoOutputFilename == "-")
- return &outs();
+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());
- std::string Error;
- raw_ostream *Result = new raw_fd_ostream(LibSupportInfoOutputFilename.c_str(),
- Error, raw_fd_ostream::F_Append);
- if (Error.empty())
- return Result;
+ TimeRecord Total;
+ for (unsigned i = 0, e = TimersToPrint.size(); i != e; ++i)
+ Total += TimersToPrint[i].first;
- errs() << "Error opening info-output-file '"
- << LibSupportInfoOutputFilename << " for appending!\n";
- delete Result;
- return &errs();
+ // 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();
}
-
-void TimerGroup::removeTimer() {
+/// print - Print any started timers in this group and zero them.
+void TimerGroup::print(raw_ostream &OS) {
sys::SmartScopedLock<true> L(*TimerLock);
- if (--NumTimers == 0 && !TimersToPrint.empty()) { // Print timing report...
- // Sort the timers in descending order by amount of time taken...
- std::sort(TimersToPrint.begin(), TimersToPrint.end(),
- std::greater<Timer>());
-
- // 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
-
- raw_ostream *OutStream = GetLibSupportInfoOutputFile();
-
- ++NumTimers;
- { // Scope to contain Total timer... don't allow total timer to drop us to
- // zero timers...
- Timer Total("TOTAL");
-
- for (unsigned i = 0, e = TimersToPrint.size(); i != e; ++i)
- Total.sum(TimersToPrint[i]);
-
- // Print out timing header...
- *OutStream << "===" << std::string(73, '-') << "===\n"
- << std::string(Padding, ' ') << Name << "\n"
- << "===" << 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) {
- *OutStream << " Total Execution Time: ";
-
- *OutStream << format("%5.4f", Total.getProcessTime()) << " seconds (";
- *OutStream << format("%5.4f", Total.getWallTime()) << " wall clock)\n";
- }
- *OutStream << "\n";
-
- if (Total.UserTime)
- *OutStream << " ---User Time---";
- if (Total.SystemTime)
- *OutStream << " --System Time--";
- if (Total.getProcessTime())
- *OutStream << " --User+System--";
- *OutStream << " ---Wall Time---";
- if (Total.getMemUsed())
- *OutStream << " ---Mem---";
- if (Total.getPeakMem())
- *OutStream << " -PeakMem-";
- *OutStream << " --- Name ---\n";
-
- // Loop through all of the timing data, printing it out...
- for (unsigned i = 0, e = TimersToPrint.size(); i != e; ++i)
- TimersToPrint[i].print(Total, *OutStream);
-
- Total.print(Total, *OutStream);
- *OutStream << '\n';
- OutStream->flush();
- }
- --NumTimers;
-
- TimersToPrint.clear();
-
- if (OutStream != &errs() && OutStream != &outs())
- delete OutStream; // Close the file...
+
+ // 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();
}
-}
-void TimerGroup::addTimer() {
- sys::SmartScopedLock<true> L(*TimerLock);
- ++NumTimers;
+ // If any timers were started, print the group.
+ if (!TimersToPrint.empty())
+ PrintQueuedTimers(OS);
}
-void TimerGroup::addTimerToPrint(const Timer &T) {
+/// printAll - This static method prints all timers and clears them all out.
+void TimerGroup::printAll(raw_ostream &OS) {
sys::SmartScopedLock<true> L(*TimerLock);
- TimersToPrint.push_back(Timer(true, T));
-}
+ for (TimerGroup *TG = TimerGroupList; TG; TG = TG->Next)
+ TG->print(OS);
+}
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