b=566442; add memory reporters for sqlite; r=sdwilsh

storage/src/mozStorageService.cpp

@@ -56,6 +56,7 @@
 #include "sqlite3.h"
 
 #include "nsIPromptService.h"
+#include "nsIMemoryReporter.h"
 
 namespace mozilla {
 namespace storage {
@@ -71,6 +72,16 @@ NS_IMPL_THREADSAFE_ISUPPORTS2(
 
 Service *Service::gService = nsnull;
 
+static PRInt64 GetStorageSQLiteMemoryUsed(void *) {
+  return sqlite3_memory_used();
+}
+
+NS_MEMORY_REPORTER_IMPLEMENT(StorageSQLiteMemoryUsed,
+                             "storage/sqlite",
+                             "Memory in use by SQLite",
+                             GetStorageSQLiteMemoryUsed,
+                             nsnull)
+
 Service *
 Service::getSingleton()
 {
@@ -102,6 +113,8 @@ Service::getSingleton()
       NS_RELEASE(gService);
   }
 
+  NS_RegisterMemoryReporter(new NS_MEMORY_REPORTER_NAME(StorageSQLiteMemoryUsed));
+
   return gService;
 }
 
@@ -147,12 +160,7 @@ Service::shutdown()
 nsresult
 Service::initialize()
 {
-  // Disable memory allocation statistic collection, improving performance.
+  int rc;
-  // This must be done prior to a call to sqlite3_initialize to have any
-  // effect.
-  int rc = ::sqlite3_config(SQLITE_CONFIG_MEMSTATUS, 0);
-  if (rc != SQLITE_OK)
-    return convertResultCode(rc);
 
   // Explicitly initialize sqlite3.  Although this is implicitly called by
   // various sqlite3 functions (and the sqlite3_open calls in our case),