// Copyright Joyent, Inc. and other Node contributors.

//

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to permit

// persons to whom the Software is furnished to do so, subject to the

// following conditions:

//

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN

// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

// USE OR OTHER DEALINGS IN THE SOFTWARE.

#include "node_v8.h"

#include "base_object-inl.h"

#include "env-inl.h"

#include "memory_tracker-inl.h"

#include "node.h"

#include "node_external_reference.h"

#include "util-inl.h"

#include "v8.h"

namespace node {

namespace v8_utils {

using v8::Array;

using v8::Context;

using v8::FunctionCallbackInfo;

using v8::HandleScope;

using v8::HeapCodeStatistics;

using v8::HeapSpaceStatistics;

using v8::HeapStatistics;

using v8::Integer;

using v8::Isolate;

using v8::Local;

using v8::Object;

using v8::ScriptCompiler;

using v8::String;

using v8::Uint32;

using v8::V8;

using v8::Value;

#define HEAP_STATISTICS_PROPERTIES(V)                                         \

  V(0, total_heap_size, kTotalHeapSizeIndex)                                  \

  V(1, total_heap_size_executable, kTotalHeapSizeExecutableIndex)             \

  V(2, total_physical_size, kTotalPhysicalSizeIndex)                          \

  V(3, total_available_size, kTotalAvailableSize)                             \

  V(4, used_heap_size, kUsedHeapSizeIndex)                                    \

  V(5, heap_size_limit, kHeapSizeLimitIndex)                                  \

  V(6, malloced_memory, kMallocedMemoryIndex)                                 \

  V(7, peak_malloced_memory, kPeakMallocedMemoryIndex)                        \

  V(8, does_zap_garbage, kDoesZapGarbageIndex)                                \

  V(9, number_of_native_contexts, kNumberOfNativeContextsIndex)               \

  V(10, number_of_detached_contexts, kNumberOfDetachedContextsIndex)

#define V(a, b, c) +1

static constexpr size_t kHeapStatisticsPropertiesCount =

    HEAP_STATISTICS_PROPERTIES(V);

#undef V

#define HEAP_SPACE_STATISTICS_PROPERTIES(V)                                   \

  V(0, space_size, kSpaceSizeIndex)                                           \

  V(1, space_used_size, kSpaceUsedSizeIndex)                                  \

  V(2, space_available_size, kSpaceAvailableSizeIndex)                        \

  V(3, physical_space_size, kPhysicalSpaceSizeIndex)

#define V(a, b, c) +1

static constexpr size_t kHeapSpaceStatisticsPropertiesCount =

    HEAP_SPACE_STATISTICS_PROPERTIES(V);

#undef V

#define HEAP_CODE_STATISTICS_PROPERTIES(V)                                     \

  V(0, code_and_metadata_size, kCodeAndMetadataSizeIndex)                      \

  V(1, bytecode_and_metadata_size, kBytecodeAndMetadataSizeIndex)              \

  V(2, external_script_source_size, kExternalScriptSourceSizeIndex)

#define V(a, b, c) +1

static const size_t kHeapCodeStatisticsPropertiesCount =

    HEAP_CODE_STATISTICS_PROPERTIES(V);

#undef V

    : SnapshotableObject(env, obj, type_int),

      heap_statistics_buffer(env->isolate(), kHeapStatisticsPropertiesCount),

      heap_space_statistics_buffer(env->isolate(),

                                   kHeapSpaceStatisticsPropertiesCount),

      heap_code_statistics_buffer(env->isolate(),

           FIXED_ONE_BYTE_STRING(env->isolate(), "heapStatisticsBuffer"),

      .Check();

           FIXED_ONE_BYTE_STRING(env->isolate(), "heapCodeStatisticsBuffer"),

      .Check();

           FIXED_ONE_BYTE_STRING(env->isolate(), "heapSpaceStatisticsBuffer"),

      .Check();

                                          v8::SnapshotCreator* creator) {

  // We'll just re-initialize the buffers in the constructor since their

  // contents can be thrown away once consumed in the previous call.

                              Local<Object> holder,

                              int index,

                              InternalFieldInfo* info) {

  DCHECK_EQ(index, BaseObject::kSlot);

  DCHECK_EQ(index, BaseObject::kSlot);

}

  Local<Integer> result =

      Integer::NewFromUnsigned(env->isolate(),

#define V(index, name, _) buffer[index] = static_cast<double>(s.name());

#undef V

#define V(index, name, _) buffer[index] = static_cast<double>(s.name());

#undef V

#define V(index, name, _) buffer[index] = static_cast<double>(s.name());

#undef V

                Local<Value> unused,

                Local<Context> context,

                void* priv) {

  BindingData* const binding_data =

                             CachedDataVersionTag);

      target, "updateHeapStatisticsBuffer", UpdateHeapStatisticsBuffer);

      target, "updateHeapCodeStatisticsBuffer", UpdateHeapCodeStatisticsBuffer);

  // Heap space names are extracted once and exposed to JavaScript to

  // avoid excessive creation of heap space name Strings.

                                             .ToLocalChecked();

  }

              FIXED_ONE_BYTE_STRING(env->isolate(), "kHeapSpaces"),

              Array::New(env->isolate(),

                         heap_spaces.out(),

                 "updateHeapSpaceStatisticsBuffer",

                 UpdateHeapSpaceStatisticsBuffer);

#define V(i, _, name)                                                          \

  target                                                                       \

      ->Set(env->context(),                                                    \

            FIXED_ONE_BYTE_STRING(env->isolate(), #name),                      \

            Uint32::NewFromUnsigned(env->isolate(), i))                        \

      .Check();

#undef V

  // Export symbols used by v8.setFlagsFromString()

}

}  // namespace v8_utils

}  // namespace node