/*
* Copyright ( C ) 2011 The Android Open Source Project
*
* Licensed under the Apache License , Version 2 . 0 ( the " License " ) ;
* you may not use this file except in compliance with the License .
* You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*/
#include <string_view>
#include "art_method-inl.h"
#include "check_reference_map_visitor.h"
#include "jni.h"
namespace art {
#define CHECK_REGS_ARE_REFERENCES(...) do { \
int t[] = {__VA_ARGS__}; \
int t_size = sizeof (t) / sizeof (*t); \
CheckReferences( \
t, t_size, GetDexPc(), GetNativePcOffset(), /* search_for_valid_sack_map= */ false); \
} while (false );
static int gJava_StackWalk_refmap_calls = 0 ;
class TestReferenceMapVisitor : public CheckReferenceMapVisitor {
public :
explicit TestReferenceMapVisitor(Thread* thread) REQUIRES_SHARED(Locks::mutator_lock_)
: CheckReferenceMapVisitor(thread) {}
bool VisitFrame() override REQUIRES_SHARED(Locks::mutator_lock_) {
if (CheckReferenceMapVisitor::VisitFrame()) {
return true ;
}
ArtMethod* m = GetMethod();
std::string_view m_name(m->GetName());
// Given the method name and the number of times the method has been called,
// we know the Dex registers with live reference values. Assert that what we
// find is what is expected.
if (m_name == "$noinline$f" ) {
if (gJava_StackWalk_refmap_calls == 1 ) {
CHECK_EQ(1 U, GetDexPc());
CHECK_REGS_ARE_REFERENCES(1 );
} else {
CHECK_EQ(gJava_StackWalk_refmap_calls, 2 );
CHECK_EQ(5 U, GetDexPc());
CHECK_REGS_ARE_REFERENCES(1 );
}
found_f_ = true ;
} else if (m_name == "$noinline$g" ) {
if (gJava_StackWalk_refmap_calls == 1 ) {
CHECK_EQ(0 xcU, GetDexPc());
CHECK_REGS_ARE_REFERENCES(0 , 2 ); // Note that v1 is not in the minimal root set
} else {
CHECK_EQ(gJava_StackWalk_refmap_calls, 2 );
CHECK_EQ(0 xcU, GetDexPc());
CHECK_REGS_ARE_REFERENCES(0 , 2 );
}
found_g_ = true ;
} else if (m_name == "shlemiel" ) {
if (gJava_StackWalk_refmap_calls == 1 ) {
CHECK_EQ(0 x380U, GetDexPc());
CHECK_REGS_ARE_REFERENCES(2 , 4 , 5 , 7 , 8 , 9 , 10 , 11 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 21 , 25 );
} else {
CHECK_EQ(gJava_StackWalk_refmap_calls, 2 );
CHECK_EQ(0 x380U, GetDexPc());
CHECK_REGS_ARE_REFERENCES(2 , 4 , 5 , 7 , 8 , 9 , 10 , 11 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 21 , 25 );
}
found_shlemiel_ = true ;
}
return true ;
}
~TestReferenceMapVisitor() {
}
bool found_f_ = false ;
bool found_g_ = false ;
bool found_shlemiel_ = false ;
};
extern "C" JNIEXPORT jint JNICALL Java_Main_testStackWalk(JNIEnv*, jobject, jint count) {
ScopedObjectAccess soa(Thread::Current());
CHECK_EQ(count, 0 );
gJava_StackWalk_refmap_calls++;
// Visitor
TestReferenceMapVisitor mapper(soa.Self());
mapper.WalkStack();
CHECK(mapper.found_f_);
CHECK(mapper.found_g_);
CHECK(mapper.found_shlemiel_);
return count + 1 ;
}
} // namespace art
Messung V0.5 in Prozent C=82 H=93 G=87
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-29)
¤
*© Formatika GbR, Deutschland