Expose memory allocator internal stats and properties.

base/allocator/allocator_extension.cc

Index: base/allocator/allocator_extension.cc
diff --git a/base/allocator/allocator_extension.cc b/base/allocator/allocator_extension.cc
index 7ae11da3e301121f328b265dac2bf489d3c5b52e..d4ed6d72f2768f7001f1dbe30c6b2df780d24e6e 100644
--- a/base/allocator/allocator_extension.cc
+++ b/base/allocator/allocator_extension.cc
@@ -9,31 +9,46 @@
 namespace base {
 namespace allocator {
 
+bool GetProperty(const char* name, size_t* value) {
+  thunks::GetPropertyFunction get_property_function =
+      base::allocator::thunks::GetGetPropertyFunction();
+  return get_property_function != NULL && get_property_function(name, value);
+}
+
 void GetStats(char* buffer, int buffer_length) {
   DCHECK_GT(buffer_length, 0);
-  if (thunks::GetStatsFunction* get_stats_function =
-          base::allocator::thunks::GetGetStatsFunction())
+  thunks::GetStatsFunction get_stats_function =
+      base::allocator::thunks::GetGetStatsFunction();
+  if (get_stats_function)
     get_stats_function(buffer, buffer_length);
   else
     buffer[0] = '\0';
 }
 
 void ReleaseFreeMemory() {
-  if (thunks::ReleaseFreeMemoryFunction* release_free_memory_function =
-          base::allocator::thunks::GetReleaseFreeMemoryFunction())
+  thunks::ReleaseFreeMemoryFunction release_free_memory_function =
+      base::allocator::thunks::GetReleaseFreeMemoryFunction();
+  if (release_free_memory_function)
     release_free_memory_function();
 }
 
-void SetGetStatsFunction(thunks::GetStatsFunction* get_stats_function) {
+void SetGetPropertyFunction(
+    thunks::GetPropertyFunction get_property_function) {
+  DCHECK_EQ(base::allocator::thunks::GetGetPropertyFunction(),
+            reinterpret_cast<thunks::GetPropertyFunction>(NULL));
+  base::allocator::thunks::SetGetPropertyFunction(get_property_function);
+}
+
+void SetGetStatsFunction(thunks::GetStatsFunction get_stats_function) {
   DCHECK_EQ(base::allocator::thunks::GetGetStatsFunction(),
-            reinterpret_cast<thunks::GetStatsFunction*>(NULL));
+            reinterpret_cast<thunks::GetStatsFunction>(NULL));
   base::allocator::thunks::SetGetStatsFunction(get_stats_function);
 }
 
 void SetReleaseFreeMemoryFunction(
-    thunks::ReleaseFreeMemoryFunction* release_free_memory_function) {
+    thunks::ReleaseFreeMemoryFunction release_free_memory_function) {
   DCHECK_EQ(base::allocator::thunks::GetReleaseFreeMemoryFunction(),
-            reinterpret_cast<thunks::ReleaseFreeMemoryFunction*>(NULL));
+            reinterpret_cast<thunks::ReleaseFreeMemoryFunction>(NULL));
   base::allocator::thunks::SetReleaseFreeMemoryFunction(
       release_free_memory_function);
 }