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// Copyright (c) 2012, 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 "vm/globals.h"
#include "vm/code_descriptors.h"
#include "vm/compiler/assembler/assembler.h"
#include "vm/compiler/jit/compiler.h"
#include "vm/dart_entry.h"
#include "vm/native_entry.h"
#include "vm/parser.h"
#include "vm/symbols.h"
#include "vm/thread.h"
#include "vm/unit_test.h"
namespace dart {
static void NativeFunc(Dart_NativeArguments args) {
Dart_Handle i = Dart_GetNativeArgument(args, 0);
Dart_Handle k = Dart_GetNativeArgument(args, 1);
int64_t value = -1;
EXPECT_VALID(Dart_IntegerToInt64(i, &value));
EXPECT_EQ(10, value);
EXPECT_VALID(Dart_IntegerToInt64(k, &value));
EXPECT_EQ(20, value);
{
TransitionNativeToVM transition(Thread::Current());
IsolateGroup::Current()->heap()->CollectAllGarbage();
}
}
static Dart_NativeFunction native_resolver(Dart_Handle name,
int argument_count,
bool* auto_setup_scope) {
ASSERT(auto_setup_scope);
*auto_setup_scope = false;
return NativeFunc;
}
TEST_CASE(StackMapGC) {
const char* kScriptChars = R"(
class A {
@pragma("vm:external-name", "NativeFunc")
external static void func(var i, var k);
static foo() {
var i;
var s1;
var k;
var s2;
var s3;
i = 10; s1 = 'abcd'; k = 20; s2 = 'B'; s3 = 'C';
func(i, k);
return i + k; }
static void moo() {
var i = A.foo();
if (i != 30) throw '$i != 30';
}
})";
// First setup the script and compile the script.
TestCase::LoadTestScript(kScriptChars, native_resolver);
TransitionNativeToVM transition(thread);
EXPECT(ClassFinalizer::ProcessPendingClasses());
const String& name = String::Handle(String::New(TestCase::url()));
const Library& lib = Library::Handle(Library::LookupLibrary(thread, name));
EXPECT(!lib.IsNull());
Class& cls =
Class::Handle(lib.LookupClass(String::Handle(Symbols::New(thread, "A"))));
EXPECT(!cls.IsNull());
// Now compile the two functions 'A.foo' and 'A.moo'
String& function_moo_name = String::Handle(String::New("moo"));
const auto& error = cls.EnsureIsFinalized(thread);
EXPECT(error == Error::null());
Function& function_moo =
Function::Handle(cls.LookupStaticFunction(function_moo_name));
EXPECT(CompilerTest::TestCompileFunction(function_moo));
EXPECT(function_moo.HasCode());
String& function_foo_name = String::Handle(String::New("foo"));
Function& function_foo =
Function::Handle(cls.LookupStaticFunction(function_foo_name));
EXPECT(CompilerTest::TestCompileFunction(function_foo));
EXPECT(function_foo.HasCode());
// Build and setup a stackmap for the call to 'func' in 'A.foo' in order
// to test the traversal of stack maps when a GC happens.
BitmapBuilder* stack_bitmap = new BitmapBuilder();
EXPECT(stack_bitmap != nullptr);
stack_bitmap->Set(0, false); // var i.
stack_bitmap->Set(1, true); // var s1.
stack_bitmap->Set(2, false); // var k.
stack_bitmap->Set(3, true); // var s2.
stack_bitmap->Set(4, true); // var s3.
const Code& code = Code::Handle(function_foo.unoptimized_code());
// Search for the pc of the call to 'func'.
const PcDescriptors& descriptors =
PcDescriptors::Handle(code.pc_descriptors());
int call_count = 0;
PcDescriptors::Iterator iter(descriptors,
UntaggedPcDescriptors::kUnoptStaticCall);
CompressedStackMapsBuilder compressed_maps_builder(thread->zone());
while (iter.MoveNext()) {
compressed_maps_builder.AddEntry(iter.PcOffset(), stack_bitmap, 0);
++call_count;
}
// We can't easily check that we put the stackmap at the correct pc, but
// we did if there was exactly one call seen.
EXPECT(call_count == 1);
const auto& compressed_maps =
CompressedStackMaps::Handle(compressed_maps_builder.Finalize());
code.set_compressed_stackmaps(compressed_maps);
// Now invoke 'A.moo' and it will trigger a GC when the native function
// is called, this should then cause the stack map of function 'A.foo'
// to be traversed and the appropriate objects visited.
const Object& result = Object::Handle(
DartEntry::InvokeFunction(function_foo, Object::empty_array()));
EXPECT(!result.IsError());
}
ISOLATE_UNIT_TEST_CASE(DescriptorList_TokenPositions) {
DescriptorList* descriptors = new DescriptorList(thread->zone());
ASSERT(descriptors != nullptr);
const int32_t token_positions[] = {
kMinInt32,
5,
13,
13,
13,
13,
31,
23,
23,
23,
33,
33,
5,
5,
TokenPosition::kMinSourcePos,
TokenPosition::kMaxSourcePos,
};
const intptr_t num_token_positions = ARRAY_SIZE(token_positions);
for (intptr_t i = 0; i < num_token_positions; i++) {
const TokenPosition& tp = TokenPosition::Deserialize(token_positions[i]);
descriptors->AddDescriptor(UntaggedPcDescriptors::kRuntimeCall, 0, 0, tp, 0,
1);
}
const PcDescriptors& finalized_descriptors =
PcDescriptors::Handle(descriptors->FinalizePcDescriptors(0));
ASSERT(!finalized_descriptors.IsNull());
PcDescriptors::Iterator it(finalized_descriptors,
UntaggedPcDescriptors::kRuntimeCall);
intptr_t i = 0;
while (it.MoveNext()) {
const TokenPosition& tp = TokenPosition::Deserialize(token_positions[i]);
if (tp != it.TokenPos()) {
OS::PrintErr("[%" Pd "]: Expected: %s != %s\n", i, tp.ToCString(),
it.TokenPos().ToCString());
}
EXPECT(tp == it.TokenPos());
i++;
}
}
} // namespace dart