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// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "platform/assert.h"
#include "include/dart_api.h"
#include "include/dart_tools_api.h"
#include "vm/dart_api_impl.h"
#include "vm/dart_api_state.h"
#include "vm/globals.h"
#include "vm/json_stream.h"
#include "vm/metrics.h"
#include "vm/unit_test.h"
// #include "vm/heap.h"
namespace dart {
#if !defined(PRODUCT)
VM_UNIT_TEST_CASE(Metric_Simple) {
TestCase::CreateTestIsolate();
{
Metric metric;
// Initialize metric.
metric.InitInstance(Isolate::Current(), "a.b.c", "foobar",
Metric::kCounter);
EXPECT_EQ(0, metric.value());
metric.increment();
EXPECT_EQ(1, metric.value());
metric.set_value(44);
EXPECT_EQ(44, metric.value());
}
Dart_ShutdownIsolate();
}
class MyMetric : public Metric {
protected:
int64_t Value() const {
// 99 bytes.
return 99;
}
public:
// Just used for testing.
int64_t LeakyValue() const { return Value(); }
};
VM_UNIT_TEST_CASE(Metric_OnDemand) {
TestCase::CreateTestIsolate();
{
Thread* thread = Thread::Current();
TransitionNativeToVM transition(thread);
StackZone zone(thread);
HANDLESCOPE(thread);
MyMetric metric;
metric.InitInstance(Isolate::Current(), "a.b.c", "foobar", Metric::kByte);
// value is still the default value.
EXPECT_EQ(0, metric.value());
// Call LeakyValue to confirm that Value returns constant 99.
EXPECT_EQ(99, metric.LeakyValue());
// Serialize to JSON.
JSONStream js;
metric.PrintJSON(&js);
const char* json = js.ToCString();
EXPECT_STREQ(
"{\"type\":\"Counter\",\"name\":\"a.b.c\",\"description\":"
"\"foobar\",\"unit\":\"byte\","
"\"fixedId\":true,\"id\":\"metrics\\/native\\/a.b.c\""
",\"value\":99.0}",
json);
}
Dart_ShutdownIsolate();
}
#endif // !defined(PRODUCT)
ISOLATE_UNIT_TEST_CASE(Metric_EmbedderAPI) {
{
TransitionVMToNative transition(Thread::Current());
const char* kScript = "void main() {}";
Dart_Handle api_lib = TestCase::LoadTestScript(
kScript, /*resolver=*/nullptr, RESOLVED_USER_TEST_URI);
EXPECT_VALID(api_lib);
}
// Ensure we've done new/old GCs to ensure max metrics are initialized.
String::New("<land-in-new-space>", Heap::kNew);
IsolateGroup::Current()->heap()->new_space()->Scavenge();
IsolateGroup::Current()->heap()->CollectAllGarbage(Heap::kLowMemory);
// Ensure we've something live in new space.
String::New("<land-in-new-space2>", Heap::kNew);
{
TransitionVMToNative transition(Thread::Current());
Dart_Isolate isolate = Dart_CurrentIsolate();
#if !defined(PRODUCT)
EXPECT(Dart_VMIsolateCountMetric() > 0);
#endif
EXPECT(Dart_IsolateHeapOldUsedMetric(isolate) > 0);
EXPECT(Dart_IsolateHeapOldUsedMaxMetric(isolate) > 0);
EXPECT(Dart_IsolateHeapOldCapacityMetric(isolate) > 0);
EXPECT(Dart_IsolateHeapOldCapacityMaxMetric(isolate) > 0);
EXPECT(Dart_IsolateHeapNewUsedMetric(isolate) > 0);
EXPECT(Dart_IsolateHeapNewUsedMaxMetric(isolate) > 0);
EXPECT(Dart_IsolateHeapNewCapacityMetric(isolate) > 0);
EXPECT(Dart_IsolateHeapNewCapacityMaxMetric(isolate) > 0);
EXPECT(Dart_IsolateHeapGlobalUsedMetric(isolate) > 0);
EXPECT(Dart_IsolateHeapGlobalUsedMaxMetric(isolate) > 0);
}
}
class MetricsTestHelper {
public:
static void Scavenge(Thread* thread) {
thread->heap()->CollectNewSpaceGarbage(thread, Heap::kDebugging);
}
};
static uintptr_t event_counter;
static const char* last_gcevent_type;
static const char* last_gcevent_reason;
void MyGCEventCallback(Dart_GCEvent* e) {
event_counter++;
last_gcevent_type = e->type;
last_gcevent_reason = e->reason;
}
ISOLATE_UNIT_TEST_CASE(Metric_SetGCEventCallback) {
event_counter = 0;
last_gcevent_type = nullptr;
last_gcevent_reason = nullptr;
{
TransitionVMToNative transition(Thread::Current());
const char* kScript = "void main() {}";
Dart_Handle api_lib = TestCase::LoadTestScript(
kScript, /*resolver=*/nullptr, RESOLVED_USER_TEST_URI);
EXPECT_VALID(api_lib);
}
EXPECT_EQ(0UL, event_counter);
EXPECT_NULLPTR(last_gcevent_type);
EXPECT_NULLPTR(last_gcevent_reason);
Dart_SetGCEventCallback(&MyGCEventCallback);
MetricsTestHelper::Scavenge(Thread::Current());
EXPECT_EQ(1UL, event_counter);
EXPECT_STREQ("Scavenge", last_gcevent_type);
EXPECT_STREQ("debugging", last_gcevent_reason);
// This call emits 2 or 3 events.
IsolateGroup::Current()->heap()->CollectAllGarbage(Heap::kLowMemory);
EXPECT_GE(event_counter, 3UL);
EXPECT_STREQ("MarkCompact", last_gcevent_type);
EXPECT_STREQ("low memory", last_gcevent_reason);
}
} // namespace dart