[Fuchsia] Give VMOs names

runtime/vm/virtual_memory.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 RUNTIME_VM_VIRTUAL_MEMORY_H_
 #define RUNTIME_VM_VIRTUAL_MEMORY_H_
 
 #include "platform/utils.h"
 #include "vm/globals.h"
 #include "vm/memory_region.h"
@@ skipping 17 matching lines @@
   uword start() const { return region_.start(); }
   uword end() const { return region_.end(); }
   void* address() const { return region_.pointer(); }
   intptr_t size() const { return region_.size(); }
 
   static void InitOnce();
 
   bool Contains(uword addr) const { return region_.Contains(addr); }
 
   // Commits the virtual memory area, which is guaranteed to be zeroed. Returns
-  // true on success and false on failure (e.g., out-of-memory).
-  bool Commit(bool is_executable) {
-    return Commit(start(), size(), is_executable);
+  // true on success and false on failure (e.g., out-of-memory). The name
+  // parameter is optional. On systems that support it, it is used to give the
+  // OS a name for the committed memory region.
+  bool Commit(bool is_executable, const char* name) {
+    return Commit(start(), size(), is_executable, name);
   }
 
   // Changes the protection of the virtual memory area.
   static bool Protect(void* address, intptr_t size, Protection mode);
   bool Protect(Protection mode) { return Protect(address(), size(), mode); }
 
   // Reserves a virtual memory segment with size. If a segment of the requested
   // size cannot be allocated NULL is returned.
   static VirtualMemory* Reserve(intptr_t size) { return ReserveInternal(size); }
 
   static intptr_t PageSize() {
     ASSERT(page_size_ != 0);
     ASSERT(Utils::IsPowerOfTwo(page_size_));
     return page_size_;
   }
 
   static bool InSamePage(uword address0, uword address1);
 
   // Truncate this virtual memory segment. If try_unmap is false, the
   // memory beyond the new end is still accessible, but will be returned
   // upon destruction.
   void Truncate(intptr_t new_size, bool try_unmap = true);
 
-  // Commit a reserved memory area, so that the memory can be accessed.
-  bool Commit(uword addr, intptr_t size, bool is_executable);
+  // Commit a reserved memory area, so that the memory can be accessed. The name
+  // parameter is optional. On systems that support it, it is used to give the
+  // OS a name for the committed memory region.
+  bool Commit(uword addr, intptr_t size, bool is_executable, const char* name);
 
   bool vm_owns_region() const { return vm_owns_region_; }
 
   static VirtualMemory* ForImagePage(void* pointer, uword size);
 
  private:
   static VirtualMemory* ReserveInternal(intptr_t size);
 
   // Free a sub segment. On operating systems that support it this
   // can give back the virtual memory to the system. Returns true on success.
@@ skipping 21 matching lines @@
   // belongs to the embedder and must not be deallocated or have its
   // protection status changed by the VM.
   bool vm_owns_region_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(VirtualMemory);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_VIRTUAL_MEMORY_H_