Expose a lower bound of malloc'd memory via heap statistics

src/compiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler.h"
 
 #include <algorithm>
 
 #include "src/ast/ast-numbering.h"
 #include "src/ast/prettyprinter.h"
@@ skipping 67 matching lines @@
  private:
   DeferredHandleScope deferred_;
   CompilationInfo* info_;
 };
 
 // Exactly like a CompilationInfo, except being allocated via {new} and it also
 // creates and enters a Zone on construction and deallocates it on destruction.
 class CompilationInfoWithZone : public CompilationInfo {
  public:
   explicit CompilationInfoWithZone(Handle<JSFunction> function)
-      : CompilationInfo(new ParseInfo(&zone_, function)) {}
+      : CompilationInfo(new ParseInfo(&zone_, function)),
+        zone_(function->GetIsolate()->allocator()) {}
 
   // Virtual destructor because a CompilationInfoWithZone has to exit the
   // zone scope and get rid of dependent maps even when the destructor is
   // called when cast as a CompilationInfo.
   virtual ~CompilationInfoWithZone() {
     DisableFutureOptimization();
     dependencies()->Rollback();
     delete parse_info_;
     parse_info_ = nullptr;
   }
@@ skipping 1069 matching lines @@
 
   return result;
 }
 
 
 bool CompileEvalForDebugging(Handle<JSFunction> function,
                              Handle<SharedFunctionInfo> shared) {
   Handle<Script> script(Script::cast(shared->script()));
   Handle<Context> context(function->context());
 
-  Zone zone;
+  Zone zone(function->GetIsolate()->allocator());
   ParseInfo parse_info(&zone, script);
   CompilationInfo info(&parse_info);
   Isolate* isolate = info.isolate();
 
   parse_info.set_eval();
   parse_info.set_context(context);
   if (context->IsNativeContext()) parse_info.set_global();
   parse_info.set_toplevel();
   parse_info.set_allow_lazy_parsing(false);
   parse_info.set_language_mode(shared->language_mode());
@@ skipping 234 matching lines @@
     return CompileEvalForDebugging(function, shared);
   } else {
     CompilationInfoWithZone info(function);
     return CompileForDebugging(&info);
   }
 }
 
 bool Compiler::CompileDebugCode(Handle<SharedFunctionInfo> shared) {
   DCHECK(shared->allows_lazy_compilation_without_context());
   DCHECK(!IsEvalToplevel(shared));
-  Zone zone;
+  Zone zone(shared->GetIsolate()->allocator());
   ParseInfo parse_info(&zone, shared);
   CompilationInfo info(&parse_info);
   return CompileForDebugging(&info);
 }
 
 // TODO(turbofan): In the future, unoptimized code with deopt support could
 // be generated lazily once deopt is triggered.
 bool Compiler::EnsureDeoptimizationSupport(CompilationInfo* info) {
   DCHECK_NOT_NULL(info->literal());
   DCHECK(info->has_scope());
@@ skipping 32 matching lines @@
     }
 
     // The existing unoptimized code was replaced with the new one.
     RecordFunctionCompilation(Logger::LAZY_COMPILE_TAG, &unoptimized, shared);
   }
   return true;
 }
 
 void Compiler::CompileForLiveEdit(Handle<Script> script) {
   // TODO(635): support extensions.
-  Zone zone;
+  Zone zone(script->GetIsolate()->allocator());
   ParseInfo parse_info(&zone, script);
   CompilationInfo info(&parse_info);
   PostponeInterruptsScope postpone(info.isolate());
   VMState<COMPILER> state(info.isolate());
 
   // Get rid of old list of shared function infos.
   info.MarkAsFirstCompile();
   info.MarkAsDebug();
   info.parse_info()->set_global();
   if (!Parser::ParseStatic(info.parse_info())) return;
@@ skipping 26 matching lines @@
 
   Handle<Script> script;
   if (!maybe_shared_info.ToHandle(&shared_info)) {
     script = isolate->factory()->NewScript(source);
     if (!script_name.is_null()) {
       script->set_name(*script_name);
       script->set_line_offset(line_offset);
       script->set_column_offset(column_offset);
     }
     script->set_origin_options(options);
-    Zone zone;
+    Zone zone(isolate->allocator());
     ParseInfo parse_info(&zone, script);
     CompilationInfo info(&parse_info);
     parse_info.set_eval();
     if (context->IsNativeContext()) parse_info.set_global();
     parse_info.set_language_mode(language_mode);
     parse_info.set_parse_restriction(restriction);
     parse_info.set_context(context);
 
     Debug::RecordEvalCaller(script);
 
@@ skipping 103 matching lines @@
       script->set_name(*script_name);
       script->set_line_offset(line_offset);
       script->set_column_offset(column_offset);
     }
     script->set_origin_options(resource_options);
     if (!source_map_url.is_null()) {
       script->set_source_mapping_url(*source_map_url);
     }
 
     // Compile the function and add it to the cache.
-    Zone zone;
+    Zone zone(isolate->allocator());
     ParseInfo parse_info(&zone, script);
     CompilationInfo info(&parse_info);
     if (is_module) {
       parse_info.set_module();
     } else {
       parse_info.set_global();
     }
     if (compile_options != ScriptCompiler::kNoCompileOptions) {
       parse_info.set_cached_data(cached_data);
     }
@@ skipping 83 matching lines @@
     }
   }
 
   // Allocate a shared function info object.
   Handle<SharedFunctionInfo> result;
   if (!maybe_existing.ToHandle(&result)) {
     result = NewSharedFunctionInfoForLiteral(isolate, literal, script);
     result->set_is_toplevel(false);
   }
 
-  Zone zone;
+  Zone zone(isolate->allocator());
   ParseInfo parse_info(&zone, script);
   CompilationInfo info(&parse_info);
   parse_info.set_literal(literal);
   parse_info.set_scope(literal->scope());
   parse_info.set_language_mode(literal->scope()->language_mode());
   if (outer_info->will_serialize()) info.PrepareForSerializing();
   if (outer_info->is_first_compile()) info.MarkAsFirstCompile();
   if (outer_info->is_debug()) info.MarkAsDebug();
 
   LiveEditFunctionTracker live_edit_tracker(isolate, literal);
@@ skipping 184 matching lines @@
     MaybeHandle<Code> code;
     if (cached.code != nullptr) code = handle(cached.code);
     Handle<Context> native_context(function->context()->native_context());
     SharedFunctionInfo::AddToOptimizedCodeMap(shared, native_context, code,
                                               literals, BailoutId::None());
   }
 }
 
 }  // namespace internal
 }  // namespace v8