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_JNIRefLocker
  35  * Method:    criticalNative
  36  * Signature: (JJ)V
  37  */
  38 JNIEXPORT void JNICALL Java_nsk_share_gc_lock_jniref_JNIRefLocker_criticalNative
  39   (JNIEnv *jni_env, jobject o, jlong enterTime, jlong sleepTime) {
  40         ExceptionCheckingJniEnvPtr env(jni_env);
  41 
  42         jobject obj;
  43         jobject gref, lref, gwref;
  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 
  51         obj = env->GetObjectField(o, objFieldId);
  52         env->SetObjectField(o, objFieldId, NULL);
  53 
  54         start_time = time(NULL);
  55         enterTime /= 1000;
  56         current_time = 0;
  57         while (current_time - start_time < enterTime) {
  58                 gref = env->NewGlobalRef(obj);
  59                 lref = env->NewLocalRef(obj);
  60                 gwref = env->NewWeakGlobalRef(obj);
  61                 mssleep((long) sleepTime);
  62                 env->DeleteGlobalRef(gref);
  63                 env->DeleteLocalRef(lref);
  64                 env->DeleteWeakGlobalRef(gwref);
  65                 mssleep((long) sleepTime);
  66                 current_time = time(NULL);
  67         }
  68         env->SetObjectField(o, objFieldId, obj);
  69 }
  70 
  71 }

  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_JNIRefLocker
  35  * Method:    criticalNative
  36  * Signature: (JJ)V
  37  */
  38 JNIEXPORT void JNICALL Java_nsk_share_gc_lock_jniref_JNIRefLocker_criticalNative
  39   (JNIEnv *jni_env, jobject o, jlong enterTime, jlong sleepTime) {
  40         ExceptionCheckingJniEnvPtr jni(jni_env);
  41 
  42         jobject obj;
  43         jobject gref, lref, gwref;
  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 
  51         obj = jni->GetObjectField(o, objFieldId, TRACE_JNI_CALL);
  52         jni->SetObjectField(o, objFieldId, NULL, TRACE_JNI_CALL);
  53 
  54         start_time = time(NULL);
  55         enterTime /= 1000;
  56         current_time = 0;
  57         while (current_time - start_time < enterTime) {
  58                 gref = jni->NewGlobalRef(obj, TRACE_JNI_CALL);
  59                 lref = jni->NewLocalRef(obj, TRACE_JNI_CALL);
  60                 gwref = jni->NewWeakGlobalRef(obj, TRACE_JNI_CALL);
  61                 mssleep((long) sleepTime);
  62                 jni->DeleteGlobalRef(gref, TRACE_JNI_CALL);
  63                 jni->DeleteLocalRef(lref, TRACE_JNI_CALL);
  64                 jni->DeleteWeakGlobalRef(gwref, TRACE_JNI_CALL);
  65                 mssleep((long) sleepTime);
  66                 current_time = time(NULL);
  67         }
  68         jni->SetObjectField(o, objFieldId, obj, TRACE_JNI_CALL);
  69 }
  70 
  71 }