//
// 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.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/Statistic.h"
+#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Format.h"
#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/Streams.h"
-#include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/Mutex.h"
+#include "llvm/Support/raw_ostream.h"
#include <algorithm>
-#include <ostream>
+#include <cstring>
using namespace llvm;
-// GetLibSupportInfoOutputFile - Return a file stream to print our output on.
-namespace llvm { extern std::ostream *GetLibSupportInfoOutputFile(); }
-
/// -stats - Command line option to cause transformations to emit stats about
/// what they did.
///
static cl::opt<bool>
-Enabled("stats", cl::desc("Enable statistics output from program"));
+Enabled(
+ "stats",
+ cl::desc("Enable statistics output from program (available with Asserts)"));
namespace {
/// StatisticInfo - This class is used in a ManagedStatic so that it is created
-/// on demand (when the first statistic is bumped) and destroyed only when
+/// on demand (when the first statistic is bumped) and destroyed only when
/// llvm_shutdown is called. We print statistics from the destructor.
class StatisticInfo {
- std::vector<const StatisticBase*> Stats;
+ std::vector<const Statistic*> Stats;
+ friend void llvm::PrintStatistics();
+ friend void llvm::PrintStatistics(raw_ostream &OS);
public:
~StatisticInfo();
-
- void addStatistic(const StatisticBase *S) {
+
+ void addStatistic(const Statistic *S) {
Stats.push_back(S);
}
};
}
static ManagedStatic<StatisticInfo> StatInfo;
-
+static ManagedStatic<sys::SmartMutex<true> > StatLock;
/// RegisterStatistic - The first time a statistic is bumped, this method is
/// called.
-void StatisticBase::RegisterStatistic() {
+void Statistic::RegisterStatistic() {
// If stats are enabled, inform StatInfo that this statistic should be
// printed.
- if (Enabled)
- StatInfo->addStatistic(this);
- // Remember we have been registered.
- Initialized = true;
-}
+ sys::SmartScopedLock<true> Writer(*StatLock);
+ if (!Initialized) {
+ if (Enabled)
+ StatInfo->addStatistic(this);
-struct NameCompare {
- bool operator()(const StatisticBase *LHS, const StatisticBase *RHS) const {
- int Cmp = std::strcmp(LHS->getName(), RHS->getName());
- if (Cmp != 0) return Cmp < 0;
-
- // Secondary key is the description.
- return std::strcmp(LHS->getDesc(), RHS->getDesc()) < 0;
+ TsanHappensBefore(this);
+ sys::MemoryFence();
+ // Remember we have been registered.
+ TsanIgnoreWritesBegin();
+ Initialized = true;
+ TsanIgnoreWritesEnd();
}
-};
+}
// Print information when destroyed, iff command line option is specified.
StatisticInfo::~StatisticInfo() {
- // Statistics not enabled?
- if (Stats.empty()) return;
+ llvm::PrintStatistics();
+}
- // Get the stream to write to.
- std::ostream &OutStream = *GetLibSupportInfoOutputFile();
+void llvm::EnableStatistics() {
+ Enabled.setValue(true);
+}
+
+bool llvm::AreStatisticsEnabled() {
+ return Enabled;
+}
+
+void llvm::PrintStatistics(raw_ostream &OS) {
+ StatisticInfo &Stats = *StatInfo;
// Figure out how long the biggest Value and Name fields are.
unsigned MaxNameLen = 0, MaxValLen = 0;
- for (unsigned i = 0, e = Stats.size(); i != e; ++i) {
+ for (size_t i = 0, e = Stats.Stats.size(); i != e; ++i) {
MaxValLen = std::max(MaxValLen,
- (unsigned)utostr(Stats[i]->getValue()).size());
+ (unsigned)utostr(Stats.Stats[i]->getValue()).size());
MaxNameLen = std::max(MaxNameLen,
- (unsigned)std::strlen(Stats[i]->getName()));
+ (unsigned)std::strlen(Stats.Stats[i]->getName()));
}
-
+
// Sort the fields by name.
- std::stable_sort(Stats.begin(), Stats.end(), NameCompare());
+ std::stable_sort(Stats.Stats.begin(), Stats.Stats.end(),
+ [](const Statistic *LHS, const Statistic *RHS) {
+ if (int Cmp = std::strcmp(LHS->getName(), RHS->getName()))
+ return Cmp < 0;
+
+ // Secondary key is the description.
+ return std::strcmp(LHS->getDesc(), RHS->getDesc()) < 0;
+ });
// Print out the statistics header...
- OutStream << "===" << std::string(73, '-') << "===\n"
- << " ... Statistics Collected ...\n"
- << "===" << std::string(73, '-') << "===\n\n";
-
+ OS << "===" << std::string(73, '-') << "===\n"
+ << " ... Statistics Collected ...\n"
+ << "===" << std::string(73, '-') << "===\n\n";
+
// Print all of the statistics.
- for (unsigned i = 0, e = Stats.size(); i != e; ++i) {
- std::string CountStr = utostr(Stats[i]->getValue());
- OutStream << std::string(MaxValLen-CountStr.size(), ' ')
- << CountStr << " " << Stats[i]->getName()
- << std::string(MaxNameLen-std::strlen(Stats[i]->getName()), ' ')
- << " - " << Stats[i]->getDesc() << "\n";
-
+ for (size_t i = 0, e = Stats.Stats.size(); i != e; ++i)
+ OS << format("%*u %-*s - %s\n",
+ MaxValLen, Stats.Stats[i]->getValue(),
+ MaxNameLen, Stats.Stats[i]->getName(),
+ Stats.Stats[i]->getDesc());
+
+ OS << '\n'; // Flush the output stream.
+ OS.flush();
+
+}
+
+void llvm::PrintStatistics() {
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_STATS)
+ StatisticInfo &Stats = *StatInfo;
+
+ // Statistics not enabled?
+ if (Stats.Stats.empty()) return;
+
+ // Get the stream to write to.
+ std::unique_ptr<raw_ostream> OutStream = CreateInfoOutputFile();
+ PrintStatistics(*OutStream);
+
+#else
+ // Check if the -stats option is set instead of checking
+ // !Stats.Stats.empty(). In release builds, Statistics operators
+ // do nothing, so stats are never Registered.
+ if (Enabled) {
+ // Get the stream to write to.
+ std::unique_ptr<raw_ostream> OutStream = CreateInfoOutputFile();
+ (*OutStream) << "Statistics are disabled. "
+ << "Build with asserts or with -DLLVM_ENABLE_STATS\n";
}
-
- OutStream << std::endl; // Flush the output stream...
-
- if (&OutStream != cerr.stream() && &OutStream != cout.stream())
- delete &OutStream; // Close the file.
+#endif
}
projects / oota-llvm.git / blobdiff