Optimize isFinite and isNaN.

src/mksnapshot.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 11 matching lines @@
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifdef COMPRESS_STARTUP_DATA_BZ2
 #include <bzlib.h>
 #endif
 #include <signal.h>
+#include <string>
+#include <map>
 
 #include "v8.h"
 
 #include "bootstrapper.h"
 #include "natives.h"
 #include "platform.h"
 #include "serialize.h"
 #include "list.h"
 
 using namespace v8;
@@ skipping 35 matching lines @@
   }
  private:
   uint32_t magic_number_;
   uint32_t max_counters_;
   uint32_t max_name_size_;
   uint32_t counters_in_use_;
   Counter counters_[kMaxCounters];
 };
 
 
+// We statically allocate a set of local counters to be used if we
+// don't want to store the stats in a memory-mapped file
+static CounterCollection local_counters;
+
+
+typedef std::map<std::string, int*> CounterMap;
+typedef std::map<std::string, int*>::iterator CounterMapIterator;
+static CounterMap counter_table_;
+
+
 class Compressor {
  public:
   virtual ~Compressor() {}
   virtual bool Compress(i::Vector<char> input) = 0;
   virtual i::Vector<char>* output() = 0;
 };
 
 
 class PartialSnapshotSink : public i::SnapshotByteSink {
  public:
@@ skipping 242 matching lines @@
   sink.WriteSpaceUsed(
       partial_ser.CurrentAllocationAddress(i::NEW_SPACE),
       partial_ser.CurrentAllocationAddress(i::OLD_POINTER_SPACE),
       partial_ser.CurrentAllocationAddress(i::OLD_DATA_SPACE),
       partial_ser.CurrentAllocationAddress(i::CODE_SPACE),
       partial_ser.CurrentAllocationAddress(i::MAP_SPACE),
       partial_ser.CurrentAllocationAddress(i::CELL_SPACE),
       partial_ser.CurrentAllocationAddress(i::LO_SPACE));
   return 0;
 }