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/* Copyright (C) 2016 The Android Open Source Project
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This file implements interfaces from the file jvmti.h. This implementation
* is licensed under the same terms as the file jvmti.h. The
* copyright and license information for the file jvmti.h follows.
*
* Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#ifndef ART_OPENJDKJVMTI_TI_STACK_H_
#define ART_OPENJDKJVMTI_TI_STACK_H_
#include "jni.h"
#include "jvmti.h"
#include "art_method.h"
#include "base/mutex.h"
#include "events.h"
#include "stack.h"
namespace openjdkjvmti {
class StackUtil {
public:
static jvmtiError GetAllStackTraces(jvmtiEnv* env,
jint max_frame_count,
jvmtiStackInfo** stack_info_ptr,
jint* thread_count_ptr)
REQUIRES(!art::Locks::thread_list_lock_);
static jvmtiError GetFrameCount(jvmtiEnv* env, jthread thread, jint* count_ptr);
static jvmtiError GetFrameLocation(jvmtiEnv* env,
jthread thread,
jint depth,
jmethodID* method_ptr,
jlocation* location_ptr);
static jvmtiError GetStackTrace(jvmtiEnv* env,
jthread thread,
jint start_depth,
jint max_frame_count,
jvmtiFrameInfo* frame_buffer,
jint* count_ptr);
static jvmtiError GetThreadListStackTraces(jvmtiEnv* env,
jint thread_count,
const jthread* thread_list,
jint max_frame_count,
jvmtiStackInfo** stack_info_ptr);
static jvmtiError GetOwnedMonitorStackDepthInfo(jvmtiEnv* env,
jthread thread,
jint* info_cnt_ptr,
jvmtiMonitorStackDepthInfo** info_ptr);
static jvmtiError GetOwnedMonitorInfo(jvmtiEnv* env,
jthread thread,
jint* owned_monitor_count_ptr,
jobject** owned_monitors_ptr);
static jvmtiError NotifyFramePop(jvmtiEnv* env, jthread thread, jint depth);
static jvmtiError PopFrame(jvmtiEnv* env, jthread thread);
template <typename T>
static jvmtiError ForceEarlyReturn(
jvmtiEnv* env, EventHandler* event_handler, jthread thread, T value);
};
struct FindFrameAtDepthVisitor : art::StackVisitor {
public:
FindFrameAtDepthVisitor(art::Thread* target, art::Context* ctx, jint depth)
REQUIRES_SHARED(art::Locks::mutator_lock_)
: art::StackVisitor(target, ctx, art::StackVisitor::StackWalkKind::kIncludeInlinedFrames),
found_frame_(false),
cnt_(0),
depth_(static_cast<size_t>(depth)) { }
bool FoundFrame() {
return found_frame_;
}
bool VisitFrame() NO_THREAD_SAFETY_ANALYSIS {
if (GetMethod()->IsRuntimeMethod()) {
return true;
}
if (cnt_ == depth_) {
// We found our frame, exit.
found_frame_ = true;
return false;
} else {
cnt_++;
return true;
}
}
art::ShadowFrame* GetOrCreateShadowFrame(/*out*/bool* created_frame)
REQUIRES_SHARED(art::Locks::mutator_lock_);
private:
bool found_frame_;
size_t cnt_;
size_t depth_;
};
} // namespace openjdkjvmti
#endif // ART_OPENJDKJVMTI_TI_STACK_H_
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