我第一次使用JNI訪問c庫，我想用valgrind來檢查是否有任何內存泄漏。 Valgrind在jvm中報告瞭如此多的泄漏：（來自Valgrind的JVM中的泄漏
用於Push/Poplocal框架來管理本地引用，當然也從Get（UTFChars/Arrays）中釋放引用，除此之外它還報告AttachCurrentThread方法，實際上我通過DetachCurrentThread在我的回調函數中成功地將它分離出來
現在我只需要提醒/對我來說，我懷疑在我的應用程序退出並且valgrind已經執行了它的檢查部分之後，圖書館的卸載和銷燬還沒有完成，希望能聽到任何經歷過這種情況的人的消息。
//示例代碼
void event_callback(void .., int ..)
{
printf("--Enter event_callback Function--\n");
int detach = 0;
//store our jnienv for this thread
JNIEnv *g_env = NULL;
// if our jni env is not attached for this thread, then we will attach it
int getEnvStat = (*g_jvm)->GetEnv(g_jvm, (void **)&g_env, JNI_VERSION_1_6);
if (getEnvStat == JNI_EDETACHED)
{
//if not attached, then lets attached g_env
printf("JNIEnv not attached. Attaching..\n");
if ((*g_jvm)->AttachCurrentThread(g_jvm, (void **) &g_env, NULL) != 0)
{
printf("Failed to attach\n");
return;
}
else
{
detach = 1;
}
}
else if (getEnvStat == JNI_OK)
{
printf("GetEnv: jenv is just OK, already attached.\n");
}
else if (getEnvStat == JNI_EVERSION)
{
printf("GetEnv: version not supported\n");
return;
}
if((*g_env)->PushLocalFrame(g_env, 10)<0)
{
printf("Out of memory\n");
}
//...some useful code here
(*g_env)->PopLocalFrame(g_env, NULL);
if(detach == 1)
{
int result = (*g_jvm)->DetachCurrentThread(g_jvm);
printf("DetachCurrentThread result: %d\n", result);
}
printf("--Exit event_callback Function--\n");
}
報告：
== 20914 ==在1塊432個字節中記錄損失903 1035的
都可能丟失== 20914 = = at 0x4028876：malloc（vg_replace_malloc.c：236）
== 20914 == by 0x4950461：os :: malloc（unsigned int）（在/ usr/lib/jvm/java-7-openjdk-i386/jre中/ LIB/I386 /客戶端/立bjvm.so）
== 20914 == by 0x464470C：CHeapObj :: operator new（unsigned int）（在/ usr/lib/jvm/java-7-openjdk -i386/jre/lib/i386/client/libjvm.so）
== 20914 == by 0x496BB13：ParkEvent :: Allocate（Thread *）（在/ usr/lib/jvm/java-7-openjdk -i386/jre/lib/i386/client/libjvm .so）
== 20914 == by 0x4A13CCD：Thread :: Thread（）（in /usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/client/libjvm.so）
== 20914 ==由0x4A15091：JavaThread :: JavaThread（布爾）（以/usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/client/libjvm.so）
== 20914 == by 0x4853723：attach_current_thread.isra.103.part.104（in /usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/client/libjvm.so）
== 20914 ==由0x7B17791：event_callback（在/home/Wrapper/TJNIBridge/libJNIBridge.so）
== 20914 ==由0x7B44431：xmpp_event_main（my_xmpp.c：562）
== 20914 == by 0x412146D：clone（clone.S：130）
我還從jvm lib中粘貼了一些下面的漏洞。
== == 20914 4612（1,284直接，間接3,328）字節1塊負的戰績1009 1,035
== == 20914在0x4028876肯定失去了：的malloc（vg_replace_malloc.c ：236）
== 20914 == by 0x4950461：os :: malloc（unsigned int）（在/ usr/lib/jvm/java-7-openjdk -i386/jre/lib/i386/client/libjvm中。所以）
== 20914 == by 0x464470C：CHeapObj :: operator new（unsigned int）（在/ usr/lib/jvm/java-7-openjdk -i386/jre/lib/i386/client/libjvm中。所以）
== == 20914通過0x4A14BE9：WatcherThread ::開始（）（在/usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/client/libjvm.so）
== 20914 == by 0x4A192DF：Threads :: create_vm（JavaVMInitArgs *，bool *）（在/usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/client/libjvm.so中）
== 20914 == by 0x4865BD8：JNI_CreateJavaVM（in /usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/client/libjvm.so）
== 20914 ==由0x41ECD30：start_thread（pthread_create.c：304）
== 20914 ==由0x412146D：克隆（clone.S：130）
== 20914 ==在1塊的8個字節絕對失去損失記錄41 1035的
== 20914 ==在0x4028876：malloc的（vg_replace_malloc.c：236）
== 20914 ==由0x4950461：OS :: malloc（unsigned int）（在/ usr/lib/jvm/java-7-openjdk -i386/jre/lib/i386/client/libjvm中.so）
== 20914 == by 0x464470C：CHeapObj :: operator new（unsigned int）（in/usr/lib/jvm/java-7-openjdk -i386/jre/lib/i386/client/libjvm .so）
== 20914 == by 0x470E29D：CSpaceCounters :: CSpaceCounters（char const *，int，unsigned int，ContiguousSpace *，GenerationCounters *）（在/ usr/lib/jvm/java-7-openjdk- i386/jre/lib/i386/client/libjvm.so）
== 20914 == by 0x47A3BF9：DefNewGeneration :: DefNewGeneration（ReservedSpace，unsigned int，int，char const *）（在/ usr/lib/jvm中/java-7-openjdk-i386/jre/lib/i386/client/libjvm.so）
== 20914 ==通過0x47FC623：GenerationSpec :: init（ReservedSpace，int，GenRemSet *）（在/usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/client/libjvm.so）
== 20914 == by 0x47EF9D4：GenCollectedHeap :: initialize（）（in /usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/client/libjvm.so）
== 20914 ==由0x4B95FF3：??? （在/usr/lib/jvm/java-7-openjdk-i386/jre/lib/i386/client/libjvm.so）
的Ubuntu 11.10 OpenJDK 7的