无法在Java中释放Mat对象
我试图使用JNI将无法在Java中释放Mat对象,java,c++,opencv,java-native-interface,Java,C++,Opencv,Java Native Interface,我试图使用JNI将Mat对象从C++传递到Java。我查看了OpenCV Java dll的源代码，使用的代码与OpenCV使用的完全相同。当我想从Java中释放一个由OpenCV Java API创建的Mat对象时，它可以正常工作，但当我想释放一个使用相同代码创建的Mat对象时，我的应用程序崩溃 我正在发布我正在使用的代码。如果有人有想法，我将不胜感激。提前谢谢 [编辑] 我还想补充一点，如果你看代码块3和4，爪哇和C++边的函数定义有相同的函数名，ReaDimeG0，但是在C++和1中，函数
MatMatMat我还想补充一点，如果你看代码块3和4，爪哇和C++边的函数定义有相同的函数名，ReaDimeG0，但是在C++和1中，函数名称在其名称、IMDeLe11和IimeRe1中有额外的1，这两个函数是如何链接的？也许有一个额外的层，我不知道
[/EDIT] [EDIT2] 在Windows7、VC11上运行时，使用OpenCV 2.4.5和2.4.8进行了尝试 [/EDIT2] 1。这是在OpenCV源代码中传递<代码> Mat < /Cord>对象的C++代码：< /St>>/P>JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11 (JNIEnv*, jclass, jstring);
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11
(JNIEnv* env, jclass , jstring filename)
{
static const char method_name[] = "highgui::imread_11()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(filename, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(filename, utf_filename);
Mat _retval_ = cv::imread( n_filename );
return (jlong) new Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat imread(String filename)
{
Mat retVal = new Mat(imread_1(filename));
return retVal;
}
private static native long imread_1(String filename);
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
{
static const char method_name[] = "OpenCVCpp2Java::readImage0()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(imagePath, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(imagePath, utf_filename);
cv::Mat _retval_ = cv::imread( n_filename );
return (jlong) new cv::Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat readImage(String imagePath)
{
Mat retVal = new Mat(readImage0(imagePath));
return retVal;
}
private static native long readImage0(String imagePath);
Mat image = Highgui.imread("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava.png", image); // this is to check if image is read correctly and works fine
image.release(); // this works fine
//system.gc(); // this also works fine
Mat image2 = OpenCVCpp2Java.readImage("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava2.png", image2); // this is to check if image is read correctly and works fine
image2.release(); // this throws exception!
//system.gc(); // this causes application to crash!
Exception in thread "main" java.lang.Exception: Unknown exception in JNI code {Mat::n_1release()}
at org.opencv.core.Mat.n_release(Native Method)
at org.opencv.core.Mat.release(Mat.java:1875)
Stack: [0x28880000,0x288d0000], sp=0x288cf620, free space=317k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [ntdll.dll+0x2e3be] RtlInitUnicodeString+0x196
C [ntdll.dll+0x2e023] RtlFreeHeap+0x7e
C [kernel32.dll+0x114ad] HeapFree+0x14
C [opencv_java245.dll+0x48e877] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x429a47
C [opencv_java245.dll+0x904f3] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x2b6c3
C [opencv_java245.dll+0x6516a] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x33a
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfb90d]
V [jvm.dll+0x96301]
V [jvm.dll+0x990c9]
C [java.dll+0x2100] Java_java_lang_ref_Finalizer_invokeFinalizeMethod+0x39
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfba31]
V [jvm.dll+0xfba8b]
V [jvm.dll+0xb5e89]
V [jvm.dll+0x119b74]
V [jvm.dll+0x14217c]
C [msvcr71.dll+0x9565] endthreadex+0xa0
C [kernel32.dll+0x1336a] BaseThreadInitThunk+0x12
C [ntdll.dll+0x39f72] RtlInitializeExceptionChain+0x63
C [ntdll.dll+0x39f45] RtlInitializeExceptionChain+0x36
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
j java.lang.ref.Finalizer.invokeFinalizeMethod(Ljava/lang/Object;)V+0
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11 (JNIEnv*, jclass, jstring);
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11
(JNIEnv* env, jclass , jstring filename)
{
static const char method_name[] = "highgui::imread_11()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(filename, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(filename, utf_filename);
Mat _retval_ = cv::imread( n_filename );
return (jlong) new Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat imread(String filename)
{
Mat retVal = new Mat(imread_1(filename));
return retVal;
}
private static native long imread_1(String filename);
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
{
static const char method_name[] = "OpenCVCpp2Java::readImage0()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(imagePath, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(imagePath, utf_filename);
cv::Mat _retval_ = cv::imread( n_filename );
return (jlong) new cv::Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat readImage(String imagePath)
{
Mat retVal = new Mat(readImage0(imagePath));
return retVal;
}
private static native long readImage0(String imagePath);
Mat image = Highgui.imread("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava.png", image); // this is to check if image is read correctly and works fine
image.release(); // this works fine
//system.gc(); // this also works fine
Mat image2 = OpenCVCpp2Java.readImage("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava2.png", image2); // this is to check if image is read correctly and works fine
image2.release(); // this throws exception!
//system.gc(); // this causes application to crash!
Exception in thread "main" java.lang.Exception: Unknown exception in JNI code {Mat::n_1release()}
at org.opencv.core.Mat.n_release(Native Method)
at org.opencv.core.Mat.release(Mat.java:1875)
Stack: [0x28880000,0x288d0000], sp=0x288cf620, free space=317k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [ntdll.dll+0x2e3be] RtlInitUnicodeString+0x196
C [ntdll.dll+0x2e023] RtlFreeHeap+0x7e
C [kernel32.dll+0x114ad] HeapFree+0x14
C [opencv_java245.dll+0x48e877] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x429a47
C [opencv_java245.dll+0x904f3] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x2b6c3
C [opencv_java245.dll+0x6516a] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x33a
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfb90d]
V [jvm.dll+0x96301]
V [jvm.dll+0x990c9]
C [java.dll+0x2100] Java_java_lang_ref_Finalizer_invokeFinalizeMethod+0x39
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfba31]
V [jvm.dll+0xfba8b]
V [jvm.dll+0xb5e89]
V [jvm.dll+0x119b74]
V [jvm.dll+0x14217c]
C [msvcr71.dll+0x9565] endthreadex+0xa0
C [kernel32.dll+0x1336a] BaseThreadInitThunk+0x12
C [ntdll.dll+0x39f72] RtlInitializeExceptionChain+0x63
C [ntdll.dll+0x39f45] RtlInitializeExceptionChain+0x36
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
j java.lang.ref.Finalizer.invokeFinalizeMethod(Ljava/lang/Object;)V+0
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11 (JNIEnv*, jclass, jstring);
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11
(JNIEnv* env, jclass , jstring filename)
{
static const char method_name[] = "highgui::imread_11()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(filename, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(filename, utf_filename);
Mat _retval_ = cv::imread( n_filename );
return (jlong) new Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat imread(String filename)
{
Mat retVal = new Mat(imread_1(filename));
return retVal;
}
private static native long imread_1(String filename);
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
{
static const char method_name[] = "OpenCVCpp2Java::readImage0()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(imagePath, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(imagePath, utf_filename);
cv::Mat _retval_ = cv::imread( n_filename );
return (jlong) new cv::Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat readImage(String imagePath)
{
Mat retVal = new Mat(readImage0(imagePath));
return retVal;
}
private static native long readImage0(String imagePath);
Mat image = Highgui.imread("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava.png", image); // this is to check if image is read correctly and works fine
image.release(); // this works fine
//system.gc(); // this also works fine
Mat image2 = OpenCVCpp2Java.readImage("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava2.png", image2); // this is to check if image is read correctly and works fine
image2.release(); // this throws exception!
//system.gc(); // this causes application to crash!
Exception in thread "main" java.lang.Exception: Unknown exception in JNI code {Mat::n_1release()}
at org.opencv.core.Mat.n_release(Native Method)
at org.opencv.core.Mat.release(Mat.java:1875)
Stack: [0x28880000,0x288d0000], sp=0x288cf620, free space=317k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [ntdll.dll+0x2e3be] RtlInitUnicodeString+0x196
C [ntdll.dll+0x2e023] RtlFreeHeap+0x7e
C [kernel32.dll+0x114ad] HeapFree+0x14
C [opencv_java245.dll+0x48e877] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x429a47
C [opencv_java245.dll+0x904f3] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x2b6c3
C [opencv_java245.dll+0x6516a] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x33a
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfb90d]
V [jvm.dll+0x96301]
V [jvm.dll+0x990c9]
C [java.dll+0x2100] Java_java_lang_ref_Finalizer_invokeFinalizeMethod+0x39
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfba31]
V [jvm.dll+0xfba8b]
V [jvm.dll+0xb5e89]
V [jvm.dll+0x119b74]
V [jvm.dll+0x14217c]
C [msvcr71.dll+0x9565] endthreadex+0xa0
C [kernel32.dll+0x1336a] BaseThreadInitThunk+0x12
C [ntdll.dll+0x39f72] RtlInitializeExceptionChain+0x63
C [ntdll.dll+0x39f45] RtlInitializeExceptionChain+0x36
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
j java.lang.ref.Finalizer.invokeFinalizeMethod(Ljava/lang/Object;)V+0
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11 (JNIEnv*, jclass, jstring);
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11
(JNIEnv* env, jclass , jstring filename)
{
static const char method_name[] = "highgui::imread_11()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(filename, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(filename, utf_filename);
Mat _retval_ = cv::imread( n_filename );
return (jlong) new Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat imread(String filename)
{
Mat retVal = new Mat(imread_1(filename));
return retVal;
}
private static native long imread_1(String filename);
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
{
static const char method_name[] = "OpenCVCpp2Java::readImage0()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(imagePath, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(imagePath, utf_filename);
cv::Mat _retval_ = cv::imread( n_filename );
return (jlong) new cv::Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat readImage(String imagePath)
{
Mat retVal = new Mat(readImage0(imagePath));
return retVal;
}
private static native long readImage0(String imagePath);
Mat image = Highgui.imread("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava.png", image); // this is to check if image is read correctly and works fine
image.release(); // this works fine
//system.gc(); // this also works fine
Mat image2 = OpenCVCpp2Java.readImage("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava2.png", image2); // this is to check if image is read correctly and works fine
image2.release(); // this throws exception!
//system.gc(); // this causes application to crash!
Exception in thread "main" java.lang.Exception: Unknown exception in JNI code {Mat::n_1release()}
at org.opencv.core.Mat.n_release(Native Method)
at org.opencv.core.Mat.release(Mat.java:1875)
Stack: [0x28880000,0x288d0000], sp=0x288cf620, free space=317k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [ntdll.dll+0x2e3be] RtlInitUnicodeString+0x196
C [ntdll.dll+0x2e023] RtlFreeHeap+0x7e
C [kernel32.dll+0x114ad] HeapFree+0x14
C [opencv_java245.dll+0x48e877] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x429a47
C [opencv_java245.dll+0x904f3] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x2b6c3
C [opencv_java245.dll+0x6516a] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x33a
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfb90d]
V [jvm.dll+0x96301]
V [jvm.dll+0x990c9]
C [java.dll+0x2100] Java_java_lang_ref_Finalizer_invokeFinalizeMethod+0x39
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfba31]
V [jvm.dll+0xfba8b]
V [jvm.dll+0xb5e89]
V [jvm.dll+0x119b74]
V [jvm.dll+0x14217c]
C [msvcr71.dll+0x9565] endthreadex+0xa0
C [kernel32.dll+0x1336a] BaseThreadInitThunk+0x12
C [ntdll.dll+0x39f72] RtlInitializeExceptionChain+0x63
C [ntdll.dll+0x39f45] RtlInitializeExceptionChain+0x36
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
j java.lang.ref.Finalizer.invokeFinalizeMethod(Ljava/lang/Object;)V+0
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11 (JNIEnv*, jclass, jstring);
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11
(JNIEnv* env, jclass , jstring filename)
{
static const char method_name[] = "highgui::imread_11()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(filename, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(filename, utf_filename);
Mat _retval_ = cv::imread( n_filename );
return (jlong) new Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat imread(String filename)
{
Mat retVal = new Mat(imread_1(filename));
return retVal;
}
private static native long imread_1(String filename);
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
{
static const char method_name[] = "OpenCVCpp2Java::readImage0()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(imagePath, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(imagePath, utf_filename);
cv::Mat _retval_ = cv::imread( n_filename );
return (jlong) new cv::Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat readImage(String imagePath)
{
Mat retVal = new Mat(readImage0(imagePath));
return retVal;
}
private static native long readImage0(String imagePath);
Mat image = Highgui.imread("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava.png", image); // this is to check if image is read correctly and works fine
image.release(); // this works fine
//system.gc(); // this also works fine
Mat image2 = OpenCVCpp2Java.readImage("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava2.png", image2); // this is to check if image is read correctly and works fine
image2.release(); // this throws exception!
//system.gc(); // this causes application to crash!
Exception in thread "main" java.lang.Exception: Unknown exception in JNI code {Mat::n_1release()}
at org.opencv.core.Mat.n_release(Native Method)
at org.opencv.core.Mat.release(Mat.java:1875)
Stack: [0x28880000,0x288d0000], sp=0x288cf620, free space=317k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [ntdll.dll+0x2e3be] RtlInitUnicodeString+0x196
C [ntdll.dll+0x2e023] RtlFreeHeap+0x7e
C [kernel32.dll+0x114ad] HeapFree+0x14
C [opencv_java245.dll+0x48e877] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x429a47
C [opencv_java245.dll+0x904f3] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x2b6c3
C [opencv_java245.dll+0x6516a] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x33a
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfb90d]
V [jvm.dll+0x96301]
V [jvm.dll+0x990c9]
C [java.dll+0x2100] Java_java_lang_ref_Finalizer_invokeFinalizeMethod+0x39
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfba31]
V [jvm.dll+0xfba8b]
V [jvm.dll+0xb5e89]
V [jvm.dll+0x119b74]
V [jvm.dll+0x14217c]
C [msvcr71.dll+0x9565] endthreadex+0xa0
C [kernel32.dll+0x1336a] BaseThreadInitThunk+0x12
C [ntdll.dll+0x39f72] RtlInitializeExceptionChain+0x63
C [ntdll.dll+0x39f45] RtlInitializeExceptionChain+0x36
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
j java.lang.ref.Finalizer.invokeFinalizeMethod(Ljava/lang/Object;)V+0
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11 (JNIEnv*, jclass, jstring);
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11
(JNIEnv* env, jclass , jstring filename)
{
static const char method_name[] = "highgui::imread_11()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(filename, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(filename, utf_filename);
Mat _retval_ = cv::imread( n_filename );
return (jlong) new Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat imread(String filename)
{
Mat retVal = new Mat(imread_1(filename));
return retVal;
}
private static native long imread_1(String filename);
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
{
static const char method_name[] = "OpenCVCpp2Java::readImage0()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(imagePath, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(imagePath, utf_filename);
cv::Mat _retval_ = cv::imread( n_filename );
return (jlong) new cv::Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat readImage(String imagePath)
{
Mat retVal = new Mat(readImage0(imagePath));
return retVal;
}
private static native long readImage0(String imagePath);
Mat image = Highgui.imread("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava.png", image); // this is to check if image is read correctly and works fine
image.release(); // this works fine
//system.gc(); // this also works fine
Mat image2 = OpenCVCpp2Java.readImage("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava2.png", image2); // this is to check if image is read correctly and works fine
image2.release(); // this throws exception!
//system.gc(); // this causes application to crash!
Exception in thread "main" java.lang.Exception: Unknown exception in JNI code {Mat::n_1release()}
at org.opencv.core.Mat.n_release(Native Method)
at org.opencv.core.Mat.release(Mat.java:1875)
Stack: [0x28880000,0x288d0000], sp=0x288cf620, free space=317k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [ntdll.dll+0x2e3be] RtlInitUnicodeString+0x196
C [ntdll.dll+0x2e023] RtlFreeHeap+0x7e
C [kernel32.dll+0x114ad] HeapFree+0x14
C [opencv_java245.dll+0x48e877] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x429a47
C [opencv_java245.dll+0x904f3] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x2b6c3
C [opencv_java245.dll+0x6516a] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x33a
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfb90d]
V [jvm.dll+0x96301]
V [jvm.dll+0x990c9]
C [java.dll+0x2100] Java_java_lang_ref_Finalizer_invokeFinalizeMethod+0x39
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfba31]
V [jvm.dll+0xfba8b]
V [jvm.dll+0xb5e89]
V [jvm.dll+0x119b74]
V [jvm.dll+0x14217c]
C [msvcr71.dll+0x9565] endthreadex+0xa0
C [kernel32.dll+0x1336a] BaseThreadInitThunk+0x12
C [ntdll.dll+0x39f72] RtlInitializeExceptionChain+0x63
C [ntdll.dll+0x39f45] RtlInitializeExceptionChain+0x36
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
j java.lang.ref.Finalizer.invokeFinalizeMethod(Ljava/lang/Object;)V+0
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11 (JNIEnv*, jclass, jstring);
JNIEXPORT jlong JNICALL Java_org_opencv_highgui_Highgui_imread_11
(JNIEnv* env, jclass , jstring filename)
{
static const char method_name[] = "highgui::imread_11()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(filename, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(filename, utf_filename);
Mat _retval_ = cv::imread( n_filename );
return (jlong) new Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat imread(String filename)
{
Mat retVal = new Mat(imread_1(filename));
return retVal;
}
private static native long imread_1(String filename);
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
JNIEXPORT jlong JNICALL Java_tr_com_guney_opencvcpp2java_OpenCVCpp2Java_readImage0(JNIEnv *env, jclass, jstring imagePath)
{
static const char method_name[] = "OpenCVCpp2Java::readImage0()";
try {
LOGD("%s", method_name);
const char* utf_filename = env->GetStringUTFChars(imagePath, 0); std::string n_filename( utf_filename ? utf_filename : "" ); env->ReleaseStringUTFChars(imagePath, utf_filename);
cv::Mat _retval_ = cv::imread( n_filename );
return (jlong) new cv::Mat(_retval_);
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
return 0;
}
public static Mat readImage(String imagePath)
{
Mat retVal = new Mat(readImage0(imagePath));
return retVal;
}
private static native long readImage0(String imagePath);
Mat image = Highgui.imread("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava.png", image); // this is to check if image is read correctly and works fine
image.release(); // this works fine
//system.gc(); // this also works fine
Mat image2 = OpenCVCpp2Java.readImage("e:/image.png"); //this works fine
Highgui.imwrite("e:/imageJava2.png", image2); // this is to check if image is read correctly and works fine
image2.release(); // this throws exception!
//system.gc(); // this causes application to crash!
Exception in thread "main" java.lang.Exception: Unknown exception in JNI code {Mat::n_1release()}
at org.opencv.core.Mat.n_release(Native Method)
at org.opencv.core.Mat.release(Mat.java:1875)
Stack: [0x28880000,0x288d0000], sp=0x288cf620, free space=317k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [ntdll.dll+0x2e3be] RtlInitUnicodeString+0x196
C [ntdll.dll+0x2e023] RtlFreeHeap+0x7e
C [kernel32.dll+0x114ad] HeapFree+0x14
C [opencv_java245.dll+0x48e877] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x429a47
C [opencv_java245.dll+0x904f3] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x2b6c3
C [opencv_java245.dll+0x6516a] Java_org_opencv_contrib_Contrib_chamerMatching_11+0x33a
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfb90d]
V [jvm.dll+0x96301]
V [jvm.dll+0x990c9]
C [java.dll+0x2100] Java_java_lang_ref_Finalizer_invokeFinalizeMethod+0x39
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
V [jvm.dll+0xfb88b]
V [jvm.dll+0x18d551]
V [jvm.dll+0xfba31]
V [jvm.dll+0xfba8b]
V [jvm.dll+0xb5e89]
V [jvm.dll+0x119b74]
V [jvm.dll+0x14217c]
C [msvcr71.dll+0x9565] endthreadex+0xa0
C [kernel32.dll+0x1336a] BaseThreadInitThunk+0x12
C [ntdll.dll+0x39f72] RtlInitializeExceptionChain+0x63
C [ntdll.dll+0x39f45] RtlInitializeExceptionChain+0x36
Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j org.opencv.core.Mat.n_delete(J)V+0
j org.opencv.core.Mat.finalize()V+4
v ~StubRoutines::call_stub
j java.lang.ref.Finalizer.invokeFinalizeMethod(Ljava/lang/Object;)V+0
j java.lang.ref.Finalizer.runFinalizer()V+45
j java.lang.ref.Finalizer.access$100(Ljava/lang/ref/Finalizer;)V+1
j java.lang.ref.Finalizer$FinalizerThread.run()V+24
v ~StubRoutines::call_stub
我已经知道问题出在哪里了。我认为这有点复杂，至少对我来说是这样 问题是我使用的是opencv_java248.dll，它与opencv一起分发，并且已经编译。opencv_java248.dll是静态构建的，这意味着编译后它不需要任何opencv dll（opencv_core248.dll等）。我已经创建了自己的dll opencvcpp2java.dll，它也是静态构建的，因此在运行时不需要任何dll 在我撞车后，我开始思考是什么导致了这个问题。然后我意识到内存分配和释放是在完全不同的dll上完成的。我使用opencvcpp2java.dll分配内存，并期望opencv_java248.dll发布它。当它试图释放它时，程序崩溃了。另一方面，当我使用opencv_java248.dll进行分配和解除分配时，没有问题。因此，凭直觉，我认为分配和解除分配应该在同一个dll上完成 在这种直觉之后，我自己编译了opencv_java248.dll（顺便说一句，您需要编译所有的opencv dll，当您使用CMake时，这是小菜一碟），并使其依赖于其他opencv dll，重新编译opencvcpp2java.dll，还使其依赖于opencv dll。因此，当我想使用opencvcpp2java.dll分配内存时，它会使用OpenCV dll的（更具体地说，是OpenCV_core248.dll），当我想使用OpenCV_java248.dll解除分配内存时，它会使用创建的相同dll解除分配内存
我不能100%确定这是正确的解决方案，但它对我有效。这可能是一个问题：。你能用调试器进行附加并得到完整的回溯吗？我还注意到在发布时没有空检查