c8d535b30b
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@5074 626c5289-ae23-0410-ae9c-e8d60b6d4f22
94 lines
2.2 KiB
Text
94 lines
2.2 KiB
Text
/***********************************************************************
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* director.swg
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*
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* This file contains support for director classes that proxy
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* method calls from C++ to Java extensions.
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*
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* Author : Scott Michel (scottm@aero.org)
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*
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* N.B.: This file was
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adapted from the python director.swg, written by
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* Mark Rose (mrose@stm.lbl.gov)
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************************************************************************/
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#ifdef __cplusplus
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/* director base class */
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class __DIRECTOR__ {
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private:
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/* pointer to java virtual machine */
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JavaVM *__jvm;
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protected:
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/* pointer to the wrapped java object */
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jobject __self;
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/* ricochet flag: Prevent user from shooting themselves in the
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foot by detecting recursive upcall */
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bool __ricochet;
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/* Acquire Java VM environment from Java VM */
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JNIEnv *__acquire_jenv() const {
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JNIEnv *env;
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assert(__jvm);
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__jvm->AttachCurrentThread((void **) &env, NULL);
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return env;
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}
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public:
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/* the default constructor should not be called */
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__DIRECTOR__() : __jvm(NULL), __self(NULL), __ricochet(false) {
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assert(0);
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}
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/* Default constructor */
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__DIRECTOR__(JNIEnv *jenv):
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__jvm((JavaVM *) NULL),
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__self(NULL),
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__ricochet(false)
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{
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/* Acquire the Java VM pointer */
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jenv->GetJavaVM(&__jvm);
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}
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/* Remove the Java object global lock at destruction */
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virtual ~__DIRECTOR__()
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{
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if (__self) {
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JNIEnv *jenv;
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jenv = __acquire_jenv();
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jenv->DeleteGlobalRef(__self);
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__self = (jobject) NULL;
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}
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}
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/* Set __self and get Java global reference on object */
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inline void __set_self(JNIEnv *jenv, jobject jself)
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{
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__self = jenv->NewGlobalRef(jself);
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}
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/* return a pointer to the wrapped java object */
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inline jobject __get_self() const
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{ return __self; }
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/* Get ricochet flag, resetting it on the way out */
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inline bool __get_ricochet()
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{
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bool __r = __ricochet;
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__ricochet = false;
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return __r;
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}
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/* Set the ricochet flag */
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inline void __set_ricochet()
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{ __ricochet = true; }
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/* Clear the ricochet flag */
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inline void __clear_ricochet()
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{ __ricochet = false; }
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};
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#endif /* __cplusplus */
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