Resubmission of native memory allocation info surfacing in Observatory. Fixed crashing tests and st…

runtime/vm/profiler.h

 // Copyright (c) 2013, 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 RUNTIME_VM_PROFILER_H_
 #define RUNTIME_VM_PROFILER_H_
 
 #include "vm/allocation.h"
 #include "vm/bitfield.h"
 #include "vm/code_observers.h"
 #include "vm/globals.h"
 #include "vm/growable_array.h"
 #include "vm/malloc_hooks.h"
+#include "vm/native_symbol.h"
 #include "vm/object.h"
 #include "vm/tags.h"
 #include "vm/thread_interrupter.h"
 
 // Profiler sampling and stack walking support.
 // NOTE: For service related code, see profile_service.h.
 
 namespace dart {
 
 // Forward declarations.
@@ skipping 189 matching lines @@
   }
 
   // Set stack trace entry.
   void SetAt(intptr_t i, uword pc) {
     ASSERT(i >= 0);
     ASSERT(i < pcs_length_);
     uword* pcs = GetPCArray();
     pcs[i] = pc;
   }
 
+  void DumpStackTrace() {
+    for (intptr_t i = 0; i < pcs_length_; ++i) {
+      uintptr_t start = 0;
+      uword pc = At(i);
+      char* native_symbol_name =
+          NativeSymbolResolver::LookupSymbolName(pc, &start);
+      if (native_symbol_name == NULL) {
+        OS::PrintErr("  [0x%" Pp "] Unknown symbol\n", pc);
+      } else {
+        OS::PrintErr("  [0x%" Pp "] %s\n", pc, native_symbol_name);
+        NativeSymbolResolver::FreeSymbolName(native_symbol_name);
+      }
+    }
+  }
+
   uword vm_tag() const { return vm_tag_; }
   void set_vm_tag(uword tag) {
     ASSERT(tag != VMTag::kInvalidTagId);
     vm_tag_ = tag;
   }
 
   uword user_tag() const { return user_tag_; }
   void set_user_tag(uword tag) { user_tag_ = tag; }
 
   uword pc_marker() const { return pc_marker_; }
@@ skipping 450 matching lines @@
  private:
   ZoneGrowableArray<ProcessedSample*> samples_;
   CodeLookupTable* code_lookup_table_;
 
   DISALLOW_COPY_AND_ASSIGN(ProcessedSampleBuffer);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_PROFILER_H_