From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001
From: upstream source tree <ports@midipix.org>
Date: Sun, 15 Mar 2015 20:14:05 -0400
Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified
 gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream
 tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.
---
 .../libjava.jvmti/interp/natgetstacktrace.cc       | 144 +++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 libjava/testsuite/libjava.jvmti/interp/natgetstacktrace.cc

(limited to 'libjava/testsuite/libjava.jvmti/interp/natgetstacktrace.cc')

diff --git a/libjava/testsuite/libjava.jvmti/interp/natgetstacktrace.cc b/libjava/testsuite/libjava.jvmti/interp/natgetstacktrace.cc
new file mode 100644
index 000000000..cfd7c48c0
--- /dev/null
+++ b/libjava/testsuite/libjava.jvmti/interp/natgetstacktrace.cc
@@ -0,0 +1,144 @@
+#include <jni.h>
+
+#include <jvmti.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <unistd.h>
+
+#include "getstacktrace.h"
+
+void
+printStackTrace (jvmtiFrameInfo *frames, jint frame_cnt)
+{
+  printf ("Thread has %d frames\n", static_cast<int> (frame_cnt));
+
+  for (int i = 0; i < frame_cnt; i++)
+    {
+      jmethodID method = frames[i].method;
+      jlocation location = frames[i].location;
+
+      if (location == -1)
+        {
+          printf ("Frame %d is native\n", i);
+        }
+      else
+        {
+          printf ("Frame %d is interpreted\n", i);
+        }
+    }
+}
+
+
+JNIEXPORT void JNICALL Java_getstacktrace_natPlaceholder (JNIEnv *env, jobject obj)
+{
+  jclass klass = env->GetObjectClass (obj);
+  jfieldID done_id = env->GetFieldID (klass, "done", "Z");
+  jfieldID num_frames_id = env->GetFieldID (klass, "num_frames", "I");
+  jfieldID thread_num_id = env->GetFieldID (klass, "thread_num", "I");
+
+  // num_frames--
+  jint n_frames = env->GetIntField (obj, num_frames_id);
+  n_frames--;
+  env->SetIntField (obj, num_frames_id, n_frames);
+
+  jint t_num = env->GetIntField (obj, thread_num_id);
+
+  if (n_frames <= 1)
+    {
+      if (t_num % 2 == 1)
+        {
+          jmethodID natRunner_id = env->GetMethodID (klass, "natRunner", "()V");
+          env->CallVoidMethod (obj, natRunner_id);
+        }
+      else
+        {
+          jmethodID runner_id = env->GetMethodID (klass, "runner", "()V");
+          env->CallVoidMethod (obj, runner_id);
+        }
+    }
+  else
+    {
+      if (t_num % 2 == 0)
+        {
+          jmethodID natPlaceholder_id = env->GetMethodID (klass,
+                                        "natPlaceholder",
+                                        "()V");
+          env->CallVoidMethod (obj, natPlaceholder_id);
+        }
+      else
+        {
+          jmethodID placeholder_id = env->GetMethodID (klass, "placeholder",
+                                     "()V");
+          env->CallVoidMethod (obj, placeholder_id);
+        }
+    }
+}
+
+JNIEXPORT void JNICALL Java_getstacktrace_natRunner (JNIEnv *env, jobject obj)
+{
+  jclass klass = env->GetObjectClass (obj);
+  jfieldID done_id = env->GetFieldID (klass, "done", "Z");
+
+
+  jboolean done;
+  done = true;
+  env->SetBooleanField (obj, done_id, done);
+
+  do
+    {
+      done = env->GetBooleanField (obj, done_id);
+      if (done == false)
+        break;
+      usleep (40);
+    }
+  while (done != false);
+}
+
+JNIEXPORT jint JNICALL Java_getstacktrace_do_1getstacktrace_1tests
+(JNIEnv *env, jclass klass, jobjectArray thr_arr)
+{
+  JavaVM *vm;
+  jint err = env->GetJavaVM (&vm);
+  if (err < 0)
+    {
+      fprintf (stderr, "error getting VM\n");
+      exit (1);
+    }
+
+  jvmtiEnv *jvmti = NULL;
+  vm->GetEnv ((void **) &jvmti, JVMTI_VERSION_1_0);
+
+  if (jvmti == NULL)
+    {
+      fprintf (stderr, "error getting jvmti environment\n");
+      exit (1);
+    }
+
+  jint frame_cnt;
+  jvmtiFrameInfo frames[30];
+
+  jvmtiError jerr;
+  jthread thr;
+
+  jsize num_threads = env->GetArrayLength (thr_arr);
+
+  for (int i = 0; i < num_threads; i++)
+    {
+      thr = reinterpret_cast<jthread>
+            (env->GetObjectArrayElement (thr_arr, static_cast<jsize> (i)));
+      fflush (stdout);
+      jerr = jvmti->GetStackTrace (thr, 0, 30, frames, &frame_cnt);
+      if (jerr != JVMTI_ERROR_NONE)
+        {
+          char *error_name;
+          jvmti->GetErrorName (jerr, &error_name);
+          fprintf (stderr, "JVMTI Error: %s\n", error_name);
+          jvmti->Deallocate (reinterpret_cast<unsigned char *> (error_name));
+        }
+      else
+        {
+          printStackTrace (frames, frame_cnt);
+        }
+    }
+}
-- 
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