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

src/wasm/ast-decoder.cc

 // Copyright 2015 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/signature.h"
 
 #include "src/bit-vector.h"
 #include "src/flags.h"
 #include "src/handles.h"
 #include "src/zone-containers.h"
@@ skipping 1608 matching lines @@
       while (arity_stack.back() == 0) {
         arity_stack.pop_back();
         if (arity_stack.empty()) return assigned;  // reached end of loop
         arity_stack.back()--;
       }
     }
     return assigned;
   }
 };
 
-std::vector<LocalType>* DecodeLocalDeclsForTesting(const byte* start,
-                                                   const byte* end) {
-  Zone zone;
+std::vector<LocalType>* DecodeLocalDeclsForTesting(
+    base::AccountingAllocator* allocator, const byte* start, const byte* end) {
+  Zone zone(allocator);
   FunctionBody body = {nullptr, nullptr, nullptr, start, end};
   SR_WasmDecoder decoder(&zone, nullptr, body);
   return decoder.DecodeLocalDeclsForTesting();
 }
 
-TreeResult VerifyWasmCode(FunctionBody& body) {
-  Zone zone;
+TreeResult VerifyWasmCode(base::AccountingAllocator* allocator,
+                          FunctionBody& body) {
+  Zone zone(allocator);
   SR_WasmDecoder decoder(&zone, nullptr, body);
   TreeResult result = decoder.Decode();
   return result;
 }
 
-TreeResult BuildTFGraph(TFBuilder* builder, FunctionBody& body) {
-  Zone zone;
+TreeResult BuildTFGraph(base::AccountingAllocator* allocator,
+                        TFBuilder* builder, FunctionBody& body) {
+  Zone zone(allocator);
   SR_WasmDecoder decoder(&zone, builder, body);
   TreeResult result = decoder.Decode();
   return result;
 }
 
 
 std::ostream& operator<<(std::ostream& os, const Tree& tree) {
   if (tree.pc == nullptr) {
     os << "null";
     return os;
@@ skipping 23 matching lines @@
   WasmDecoder decoder(nullptr, nullptr, pc, end);
   return decoder.OpcodeLength(pc);
 }
 
 int OpcodeArity(ModuleEnv* module, FunctionSig* sig, const byte* pc,
                 const byte* end) {
   WasmDecoder decoder(module, sig, pc, end);
   return decoder.OpcodeArity(pc);
 }
 
-void PrintAst(FunctionBody& body) {
-  Zone zone;
+void PrintAst(base::AccountingAllocator* allocator, FunctionBody& body) {
+  Zone zone(allocator);
   SR_WasmDecoder decoder(&zone, nullptr, body);
 
   OFStream os(stdout);
 
   // Print the function signature.
   if (body.sig) {
     os << "// signature: " << *body.sig << std::endl;
   }
 
   // Print the local declarations.
@@ skipping 82 matching lines @@
 BitVector* AnalyzeLoopAssignmentForTesting(Zone* zone, size_t num_locals,
                                            const byte* start, const byte* end) {
   FunctionBody body = {nullptr, nullptr, nullptr, start, end};
   SR_WasmDecoder decoder(zone, nullptr, body);
   return decoder.AnalyzeLoopAssignmentForTesting(start, num_locals);
 }
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8