Added LLVM copyright notice to Makefiles.
[oota-llvm.git] / lib / Support / Timer.cpp
index e03c3121d94f6d995cf26c077d219dd83a76fe39..5e84f38852b722d3ffb5c75566b0ba2050e9011b 100644 (file)
@@ -1,4 +1,11 @@
 //===-- Timer.cpp - Interval Timing Support -------------------------------===//
+// 
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// 
+//===----------------------------------------------------------------------===//
 //
 // Interval Timing implementation.
 //
 
 #include "Support/Timer.h"
 #include "Support/CommandLine.h"
-#include <sys/resource.h>
-#include <sys/time.h>
-#include <sys/unistd.h>
-#include <unistd.h>
-#include <malloc.h>
-#include <stdio.h>
+#include "Config/sys/resource.h"
+#include "Config/sys/time.h"
+#include "Config/unistd.h"
+#include "Config/malloc.h"
 #include <iostream>
 #include <algorithm>
 #include <functional>
+#include <fstream>
+#include <map>
+
+// 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 std::string &getLibSupportInfoOutputFilename() {
+  static std::string *LibSupportInfoOutputFilename = new std::string();
+  return *LibSupportInfoOutputFilename;
+}
 
 namespace {
+#ifdef HAVE_MALLINFO
   cl::opt<bool>
   TrackSpace("track-memory", cl::desc("Enable -time-passes memory "
                                       "tracking (this may be slow)"),
              cl::Hidden);
+#endif
+
+  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()));
 }
 
 static TimerGroup *DefaultTimerGroup = 0;
@@ -67,12 +94,13 @@ Timer::~Timer() {
 }
 
 static long getMemUsage() {
+#ifdef HAVE_MALLINFO
   if (TrackSpace) {
     struct mallinfo MI = mallinfo();
     return MI.uordblks/*+MI.hblkhd*/;
-  } else {
-    return 0;
   }
+#endif
+  return 0;
 }
 
 struct TimeRecord {
@@ -156,42 +184,105 @@ void Timer::addPeakMemoryMeasurement() {
     (*I)->PeakMem = std::max((*I)->PeakMem, MemUsed-(*I)->PeakMemBase);
 }
 
+//===----------------------------------------------------------------------===//
+//   NamedRegionTimer Implementation
+//===----------------------------------------------------------------------===//
+
+static Timer &getNamedRegionTimer(const std::string &Name) {
+  static std::map<std::string, Timer> NamedTimers;
+
+  std::map<std::string, Timer>::iterator I = NamedTimers.lower_bound(Name);
+  if (I != NamedTimers.end() && I->first == Name)
+    return I->second;
+
+  return NamedTimers.insert(I, std::make_pair(Name, Timer(Name)))->second;
+}
+
+NamedRegionTimer::NamedRegionTimer(const std::string &Name)
+  : TimeRegion(getNamedRegionTimer(Name)) {}
+
 
 //===----------------------------------------------------------------------===//
 //   TimerGroup Implementation
 //===----------------------------------------------------------------------===//
 
-static void printVal(double Val, double Total) {
+// printAlignedFP - Simulate the printf "%A.Bf" format, where A is the
+// TotalWidth size, and B is the AfterDec size.
+//
+static void printAlignedFP(double Val, unsigned AfterDec, unsigned TotalWidth,
+                           std::ostream &OS) {
+  assert(TotalWidth >= AfterDec+1 && "Bad FP Format!");
+  OS.width(TotalWidth-AfterDec-1);
+  char OldFill = OS.fill();
+  OS.fill(' ');
+  OS << (int)Val;  // Integer part;
+  OS << ".";
+  OS.width(AfterDec);
+  OS.fill('0');
+  unsigned ResultFieldSize = 1;
+  while (AfterDec--) ResultFieldSize *= 10;
+  OS << (int)(Val*ResultFieldSize) % ResultFieldSize;
+  OS.fill(OldFill);
+}
+
+static void printVal(double Val, double Total, std::ostream &OS) {
   if (Total < 1e-7)   // Avoid dividing by zero...
-    fprintf(stderr, "        -----     ");
-  else
-    fprintf(stderr, "  %7.4f (%5.1f%%)", Val, Val*100/Total);
+    OS << "        -----     ";
+  else {
+    OS << "  ";
+    printAlignedFP(Val, 4, 7, OS);
+    OS << " (";
+    printAlignedFP(Val*100/Total, 1, 5, OS);
+    OS << "%)";
+  }
 }
 
-void Timer::print(const Timer &Total) {
+void Timer::print(const Timer &Total, std::ostream &OS) {
   if (Total.UserTime)
-    printVal(UserTime, Total.UserTime);
+    printVal(UserTime, Total.UserTime, OS);
   if (Total.SystemTime)
-    printVal(SystemTime, Total.SystemTime);
+    printVal(SystemTime, Total.SystemTime, OS);
   if (Total.getProcessTime())
-    printVal(getProcessTime(), Total.getProcessTime());
-  printVal(Elapsed, Total.Elapsed);
+    printVal(getProcessTime(), Total.getProcessTime(), OS);
+  printVal(Elapsed, Total.Elapsed, OS);
   
-  fprintf(stderr, "  ");
+  OS << "  ";
 
-  if (Total.MemUsed)
-    fprintf(stderr, " %8ld  ", MemUsed);
+  if (Total.MemUsed) {
+    OS.width(9);
+    OS << MemUsed << "  ";
+  }
   if (Total.PeakMem) {
-    if (PeakMem)
-      fprintf(stderr, " %8ld  ", PeakMem);
-    else
-      fprintf(stderr, "           ");
+    if (PeakMem) {
+      OS.width(9);
+      OS << PeakMem << "  ";
+    } else
+      OS << "           ";
   }
-  std::cerr << Name << "\n";
+  OS << Name << "\n";
 
   Started = false;  // Once printed, don't print again
 }
 
+// GetLibSupportInfoOutputFile - Return a file stream to print our output on...
+std::ostream *GetLibSupportInfoOutputFile() {
+  std::string &LibSupportInfoOutputFilename = getLibSupportInfoOutputFilename();
+  if (LibSupportInfoOutputFilename.empty())
+    return &std::cerr;
+  if (LibSupportInfoOutputFilename == "-")
+    return &std::cout;
+
+  std::ostream *Result = new std::ofstream(LibSupportInfoOutputFilename.c_str(),
+                                           std::ios::app);
+  if (!Result->good()) {
+    std::cerr << "Error opening info-output-file '"
+              << LibSupportInfoOutputFilename << " for appending!\n";
+    delete Result;
+    return &std::cerr;
+  }
+  return Result;
+}
+
 
 void TimerGroup::removeTimer() {
   if (--NumTimers == 0 && !TimersToPrint.empty()) { // Print timing report...
@@ -203,6 +294,8 @@ void TimerGroup::removeTimer() {
     unsigned Padding = (80-Name.length())/2;
     if (Padding > 80) Padding = 0;         // Don't allow "negative" numbers
 
+    std::ostream *OutStream = GetLibSupportInfoOutputFile();
+
     ++NumTimers;
     {  // Scope to contain Total timer... don't allow total timer to drop us to
        // zero timers...
@@ -212,37 +305,42 @@ void TimerGroup::removeTimer() {
         Total.sum(TimersToPrint[i]);
       
       // Print out timing header...
-      std::cerr << "===" << std::string(73, '-') << "===\n"
-                << std::string(Padding, ' ') << Name << "\n"
-                << "===" << std::string(73, '-')
-                << "===\n  Total Execution Time: " << std::fixed
-                << Total.getProcessTime()
-                << " seconds (" << Total.getWallTime() << std::scientific
-                << " wall clock)\n\n";
+      *OutStream << "===" << std::string(73, '-') << "===\n"
+                 << std::string(Padding, ' ') << Name << "\n"
+                 << "===" << std::string(73, '-')
+                 << "===\n  Total Execution Time: ";
+
+      printAlignedFP(Total.getProcessTime(), 4, 5, *OutStream);
+      *OutStream << " seconds (";
+      printAlignedFP(Total.getWallTime(), 4, 5, *OutStream);
+      *OutStream << " wall clock)\n\n";
 
       if (Total.UserTime)
-        std::cerr << "   ---User Time---";
+        *OutStream << "   ---User Time---";
       if (Total.SystemTime)
-        std::cerr << "   --System Time--";
+        *OutStream << "   --System Time--";
       if (Total.getProcessTime())
-        std::cerr << "   --User+System--";
-      std::cerr << "   ---Wall Time---";
+        *OutStream << "   --User+System--";
+      *OutStream << "   ---Wall Time---";
       if (Total.getMemUsed())
-        std::cerr << "  ---Mem---";
+        *OutStream << "  ---Mem---";
       if (Total.getPeakMem())
-        std::cerr << "  -PeakMem-";
-      std::cerr << "  --- Name ---\n";
+        *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);
+        TimersToPrint[i].print(Total, *OutStream);
     
-      Total.print(Total);
-      std::cerr << std::endl;  // Flush output
+      Total.print(Total, *OutStream);
+      *OutStream << std::endl;  // Flush output
     }
     --NumTimers;
 
     TimersToPrint.clear();
+
+    if (OutStream != &std::cerr && OutStream != &std::cout)
+      delete OutStream;   // Close the file...
   }
 
   // Delete default timer group!