20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 #include <jni.h>
  24 #include <stdio.h>
  25 #include <time.h>
  26 #include "ExceptionCheckingJniEnv.hpp"
  27 #include "jni_tools.h"
  28 
  29 extern "C" {
  30 
  31 static jfieldID objFieldId = NULL;
  32 
  33 /*
  34  * Class:     nsk_share_gc_lock_jniref_JNILocalRefLocker
  35  * Method:    criticalNative
  36  * Signature: (JJ)V
  37  */
  38 JNIEXPORT void JNICALL Java_nsk_share_gc_lock_jniref_JNILocalRefLocker_criticalNative
  39   (JNIEnv *jni_env, jobject o, jlong enterTime, jlong sleepTime) {
  40         ExceptionCheckingJniEnvPtr env(jni_env);
  41 
  42         jobject obj;
  43         jobject gref;
  44         time_t start_time, current_time;
  45 
  46         if (objFieldId == NULL) {
  47                 jclass klass = env->GetObjectClass(o);
  48                 objFieldId = env->GetFieldID(klass, "obj", "Ljava/lang/Object;");
  49         }
  50         obj = env->GetObjectField(o, objFieldId);
  51         env->SetObjectField(o, objFieldId, NULL);
  52         start_time = time(NULL);
  53         enterTime /= 1000;
  54         current_time = 0;
  55         while (current_time - start_time < enterTime) {
  56                 gref = env->NewLocalRef(obj);
  57                 mssleep((long) sleepTime);
  58                 env->DeleteLocalRef(gref);
  59                 mssleep((long) sleepTime);
  60                 current_time = time(NULL);
  61         }
  62         env->SetObjectField(o, objFieldId, obj);
  63 }
  64 
  65 }

  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 #include <jni.h>
  24 #include <stdio.h>
  25 #include <time.h>
  26 #include "ExceptionCheckingJniEnv.hpp"
  27 #include "jni_tools.h"
  28 
  29 extern "C" {
  30 
  31 static jfieldID objFieldId = NULL;
  32 
  33 /*
  34  * Class:     nsk_share_gc_lock_jniref_JNILocalRefLocker
  35  * Method:    criticalNative
  36  * Signature: (JJ)V
  37  */
  38 JNIEXPORT void JNICALL Java_nsk_share_gc_lock_jniref_JNILocalRefLocker_criticalNative
  39   (JNIEnv *jni_env, jobject o, jlong enterTime, jlong sleepTime) {
  40         ExceptionCheckingJniEnvPtr jni(jni_env);
  41 
  42         jobject obj;
  43         jobject gref;
  44         time_t start_time, current_time;
  45 
  46         if (objFieldId == NULL) {
  47                 jclass klass = jni->GetObjectClass(o, TRACE_JNI_CALL);
  48                 objFieldId = jni->GetFieldID(klass, "obj", "Ljava/lang/Object;", TRACE_JNI_CALL);
  49         }
  50         obj = jni->GetObjectField(o, objFieldId, TRACE_JNI_CALL);
  51         jni->SetObjectField(o, objFieldId, NULL, TRACE_JNI_CALL);
  52         start_time = time(NULL);
  53         enterTime /= 1000;
  54         current_time = 0;
  55         while (current_time - start_time < enterTime) {
  56                 gref = jni->NewLocalRef(obj, TRACE_JNI_CALL);
  57                 mssleep((long) sleepTime);
  58                 jni->DeleteLocalRef(gref, TRACE_JNI_CALL);
  59                 mssleep((long) sleepTime);
  60                 current_time = time(NULL);
  61         }
  62         jni->SetObjectField(o, objFieldId, obj, TRACE_JNI_CALL);
  63 }
  64 
  65 }