Specify descriptor kind to iterate on.

runtime/vm/raw_object.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/globals.h"
 #include "vm/token.h"
@@ skipping 886 matching lines @@
   friend class Code;
   friend class StackFrame;
   friend class MarkingVisitor;
   friend class Function;
 };
 
 
 class RawPcDescriptors : public RawObject {
  public:
   enum Kind {
-    kDeopt,            // Deoptimization continuation point.
-    kIcCall,           // IC call.
-    kOptStaticCall,    // Call directly to known target, e.g. static call.
-    kUnoptStaticCall,  // Call to a known target via a stub.
-    kClosureCall,      // Closure call.
-    kRuntimeCall,      // Runtime call.
-    kOsrEntry,         // OSR entry point in unoptimized code.
-    kOther
+    kDeopt           = 1,  // Deoptimization continuation point.
+    kIcCall          = kDeopt << 1,  // IC call.
+    kOptStaticCall   = kIcCall << 1,  // Call directly to known target.
+    kUnoptStaticCall = kOptStaticCall << 1,  // Call to a known target via stub.
+    kClosureCall     = kUnoptStaticCall << 1,  // Closure call.
+    kRuntimeCall     = kClosureCall << 1,  // Runtime call.
+    kOsrEntry        = kRuntimeCall << 1,  // OSR entry point in unopt. code.
+    kOther           = kOsrEntry << 1,
+    kAnyKind         = 0xFFFF

[siva, 2014/07/10 18:21:21]

0xff because kind_ is uint8_t ?

[srdjan, 2014/07/10 18:24:48]

Done.

   };
 
   struct PcDescriptorRec {
     uword pc;
     int32_t deopt_id;
     int32_t token_pos;  // Or deopt reason.
     int16_t try_index;  // Or deopt index.
-    int8_t kind_;
+    uint8_t kind_;
 
     Kind kind() const { return static_cast<Kind>(kind_); }
   };
 
  private:
   RAW_HEAP_OBJECT_IMPLEMENTATION(PcDescriptors);
 
   intptr_t length_;  // Number of descriptors.
 
   // Variable length data follows here.
@@ skipping 963 matching lines @@
   COMPILE_ASSERT(kTypedDataInt8ArrayViewCid == kTypedDataInt8ArrayCid + 14);
   COMPILE_ASSERT(kExternalTypedDataInt8ArrayCid ==
                  kTypedDataInt8ArrayViewCid + 15);
   COMPILE_ASSERT(kNullCid == kExternalTypedDataInt8ArrayCid + 14);
   return (kNullCid - kTypedDataInt8ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_