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102 lines
3.3 KiB
102 lines
3.3 KiB
#include "node.h"
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#include "env.h"
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#include "env-inl.h"
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#include "util.h"
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#include "util-inl.h"
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#include "v8.h"
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namespace node {
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using v8::Context;
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using v8::ExternalArrayType;
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using v8::Function;
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using v8::FunctionCallbackInfo;
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using v8::Handle;
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using v8::HeapStatistics;
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using v8::Isolate;
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using v8::Local;
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using v8::Object;
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using v8::String;
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using v8::Uint32;
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using v8::V8;
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using v8::Value;
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#define HEAP_STATISTICS_PROPERTIES(V) \
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V(0, total_heap_size, kTotalHeapSizeIndex) \
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V(1, total_heap_size_executable, kTotalHeapSizeExecutableIndex) \
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V(2, total_physical_size, kTotalPhysicalSizeIndex) \
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V(3, used_heap_size, kUsedHeapSizeIndex) \
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V(4, heap_size_limit, kHeapSizeLimitIndex)
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#define V(a, b, c) +1
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static const size_t kHeapStatisticsBufferLength = HEAP_STATISTICS_PROPERTIES(V);
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#undef V
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static const ExternalArrayType kHeapStatisticsBufferType =
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v8::kExternalUint32Array;
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void GetHeapStatistics(const FunctionCallbackInfo<Value>& args) {
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CHECK(args.Length() == 1 && args[0]->IsObject());
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Isolate* isolate = args.GetIsolate();
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HeapStatistics s;
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isolate->GetHeapStatistics(&s);
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Local<Object> obj = args[0].As<Object>();
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uint32_t* data =
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static_cast<uint32_t*>(obj->GetIndexedPropertiesExternalArrayData());
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CHECK_NE(data, nullptr);
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ASSERT_EQ(obj->GetIndexedPropertiesExternalArrayDataType(),
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kHeapStatisticsBufferType);
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ASSERT_EQ(obj->GetIndexedPropertiesExternalArrayDataLength(),
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kHeapStatisticsBufferLength);
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#define V(i, name, _) \
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data[i] = static_cast<uint32_t>(s.name());
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HEAP_STATISTICS_PROPERTIES(V)
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#undef V
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}
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void SetFlagsFromString(const FunctionCallbackInfo<Value>& args) {
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Environment* env = Environment::GetCurrent(args);
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if (args.Length() < 1)
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return env->ThrowTypeError("v8 flag is required");
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if (!args[0]->IsString())
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return env->ThrowTypeError("v8 flag must be a string");
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String::Utf8Value flags(args[0]);
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V8::SetFlagsFromString(*flags, flags.length());
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}
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void InitializeV8Bindings(Handle<Object> target,
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Handle<Value> unused,
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Handle<Context> context) {
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Environment* env = Environment::GetCurrent(context);
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env->SetMethod(target, "getHeapStatistics", GetHeapStatistics);
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env->SetMethod(target, "setFlagsFromString", SetFlagsFromString);
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target->Set(FIXED_ONE_BYTE_STRING(env->isolate(),
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"kHeapStatisticsBufferLength"),
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Uint32::NewFromUnsigned(env->isolate(),
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kHeapStatisticsBufferLength));
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target->Set(FIXED_ONE_BYTE_STRING(env->isolate(),
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"kHeapStatisticsBufferType"),
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Uint32::NewFromUnsigned(env->isolate(),
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kHeapStatisticsBufferType));
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#define V(i, _, name) \
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target->Set(FIXED_ONE_BYTE_STRING(env->isolate(), #name), \
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Uint32::NewFromUnsigned(env->isolate(), i));
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HEAP_STATISTICS_PROPERTIES(V)
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#undef V
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}
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} // namespace node
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NODE_MODULE_CONTEXT_AWARE_BUILTIN(v8, node::InitializeV8Bindings)
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