jdk9-rt-stackwalk Udiff hotspot/src/share/vm/prims/jvm.cpp (original) (raw)

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@@ -44,10 +44,11 @@ #include "prims/jvm_misc.hpp" #include "prims/jvmtiExport.hpp" #include "prims/jvmtiThreadState.hpp" #include "prims/nativeLookup.hpp" #include "prims/privilegedStack.hpp" +#include "prims/stackwalk.hpp" #include "runtime/arguments.hpp" #include "runtime/atomic.inline.hpp" #include "runtime/handles.inline.hpp" #include "runtime/init.hpp" #include "runtime/interfaceSupport.hpp"

@@ -545,10 +546,98 @@ oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); return JNIHandles::make_local(env, element); JVM_END

+// java.lang.StackWalker ////////////////////////////////////////////////////// + + +JVM_ENTRY(jobject, JVM_CallStackWalk(JNIEnv *env, jobject stackStream, jlong mode,

•                                 jint skip_frames, jint frame_count, jint start_index,

•                                 jobjectArray classes,

•                                 jobjectArray frames))

• JVMWrapper("JVM_CallStackWalk");
• JavaThread* jt = (JavaThread*) THREAD;
• if (!jt->is_Java_thread() || !jt->has_last_Java_frame()) {
• THROW_MSG_(vmSymbols::java_lang_InternalError(), "doStackWalk: no stack trace", NULL);
• }
• Handle stackStream_h(THREAD, JNIHandles::resolve_non_null(stackStream));
• objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(classes));
• objArrayHandle classes_array_h(THREAD, ca);
• // frames array is null when only getting caller reference
• objArrayOop fa = objArrayOop(JNIHandles::resolve(frames));
• objArrayHandle frames_array_h(THREAD, fa);
• int limit = start_index+frame_count;
• if (classes_array_h->length() < limit) {
• THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), "not enough space in buffers", NULL);
• }
• Handle result = StackWalk::walk(stackStream_h, mode, skip_frames, frame_count,

•                              start_index, classes_array_h,

•                              frames_array_h, CHECK_NULL);

• return JNIHandles::make_local(env, result()); +JVM_END
• +JVM_ENTRY(jint, JVM_MoreStackWalk(JNIEnv *env, jobject stackStream, jlong mode, jlong anchor,

•                              jint frame_count, jint start_index,

•                              jobjectArray classes,

•                              jobjectArray frames))

• JVMWrapper("JVM_MoreStackWalk");
• JavaThread* jt = (JavaThread*) THREAD;
• objArrayOop ca = objArrayOop(JNIHandles::resolve_non_null(classes));
• objArrayHandle classes_array_h(THREAD, ca);
• // frames array is null when only getting caller reference
• objArrayOop fa = objArrayOop(JNIHandles::resolve(frames));
• objArrayHandle frames_array_h(THREAD, fa);
• int limit = start_index+frame_count;
• if (classes_array_h->length() < limit) {
• THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "not enough space in buffers");
• }
• Handle stackStream_h(THREAD, JNIHandles::resolve_non_null(stackStream));
• return StackWalk::moreFrames(stackStream_h, mode, anchor, frame_count,

•                           start_index, classes_array_h,

•                           frames_array_h, THREAD);

+JVM_END + +JVM_ENTRY(void, JVM_FillStackFrames(JNIEnv *env, jclass stackStream,

•                                jint start_index,

•                                jobjectArray frames,

•                                jint from_index, jint to_index))

• JVMWrapper("JVM_FillStackFrames");

• if (TraceStackWalk) {

• tty->print("JVM_FillStackFrames() start_index=%d from_index=%d to_index=%d\n",

•           start_index, from_index, to_index);

• }

• JavaThread* jt = (JavaThread*) THREAD;

• objArrayOop fa = objArrayOop(JNIHandles::resolve_non_null(frames));

• objArrayHandle frames_array_h(THREAD, fa);

• if (frames_array_h->length() < to_index) {

• THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array length not matched");

• }

• for (int i = from_index; i < to_index; i++) {

• Handle stackFrame(THREAD, frames_array_h->obj_at(i));

• java_lang_StackFrameInfo::fill_methodInfo(stackFrame, CHECK);

• } +JVM_END

• +JVM_ENTRY(void, JVM_SetMethodInfo(JNIEnv *env, jobject frame))

• JVMWrapper("JVM_SetMethodInfo");

• Handle stackFrame(THREAD, JNIHandles::resolve(frame));

• java_lang_StackFrameInfo::fill_methodInfo(stackFrame, THREAD); +JVM_END

• // java.lang.Object ///////////////////////////////////////////////

  JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) JVMWrapper("JVM_IHashCode");

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