[heap] Allow a minimum semi-space size of 512K.

src/api.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/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 863 matching lines @@
                      source_length :
                      (source ? static_cast<int>(strlen(source)) : 0)),
       source_(source, source_length_),
       dep_count_(dep_count),
       deps_(deps),
       auto_enable_(false) {
   CHECK(source != NULL || source_length_ == 0);
 }
 
 ResourceConstraints::ResourceConstraints()
-    : max_semi_space_size_(0),
+    : max_semi_space_size_in_kb_(0),
       max_old_space_size_(0),
       stack_limit_(NULL),
       code_range_size_(0),
       max_zone_pool_size_(0) {}
 
 void ResourceConstraints::ConfigureDefaults(uint64_t physical_memory,
                                             uint64_t virtual_memory_limit) {
-  set_max_semi_space_size(
+  set_max_semi_space_size_in_kb(
       static_cast<int>(i::Heap::ComputeMaxSemiSpaceSize(physical_memory)));
   set_max_old_space_size(
       static_cast<int>(i::Heap::ComputeMaxOldGenerationSize(physical_memory)));
   set_max_zone_pool_size(i::AccountingAllocator::kMaxPoolSize);
 
   if (virtual_memory_limit > 0 && i::kRequiresCodeRange) {
     // Reserve no more than 1/8 of the memory for the code range, but at most
     // kMaximalCodeRangeSize.
     set_code_range_size(
         i::Min(i::kMaximalCodeRangeSize / i::MB,
                static_cast<size_t>((virtual_memory_limit >> 3) / i::MB)));
   }
 }
 
 void SetResourceConstraints(i::Isolate* isolate,
                             const ResourceConstraints& constraints) {
-  int semi_space_size = constraints.max_semi_space_size();
+  int semi_space_size = constraints.max_semi_space_size_in_kb();
   int old_space_size = constraints.max_old_space_size();
   size_t code_range_size = constraints.code_range_size();
   size_t max_pool_size = constraints.max_zone_pool_size();
   if (semi_space_size != 0 || old_space_size != 0 || code_range_size != 0) {
     isolate->heap()->ConfigureHeap(semi_space_size, old_space_size,
                                    code_range_size);
   }
   isolate->allocator()->ConfigureSegmentPool(max_pool_size);
 
   if (constraints.stack_limit() != NULL) {
@@ skipping 9621 matching lines @@
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 }  // namespace internal
 }  // namespace v8