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      1 #include "jniHelpers.h"
      2 
      3 GdxPool::GdxPool(const char * const &poolField, const char * const &typeName, const char * const &tempField,
      4 		const char * const &poolClazz,
      5 		const char * const &obtainName, const char * const &obtainSig,
      6 		const char * const &freeName, const char * const &freeSig)
      7 	: env(0), cls(0), pool(0), tmp(0), poolField(poolField), typeName(typeName), tempField(tempField), poolClazz(poolClazz), obtainName(obtainName), obtainSig(obtainSig), freeName(freeName), freeSig(freeSig)
      8 { }
      9 
     10 GdxPool::~GdxPool() {
     11 	if (pool)
     12 		env->DeleteGlobalRef(pool);
     13 	if (tmp)
     14 		env->DeleteGlobalRef(tmp);
     15 	if (cls)
     16 		env->DeleteGlobalRef(cls);
     17 }
     18 
     19 void GdxPool::setEnv(JNIEnv * const &e) {
     20 	env = e;
     21 	cls = (jclass)env->NewGlobalRef(env->FindClass(typeName));
     22 	jfieldID poolFieldID = env->GetStaticFieldID(cls, poolField, poolClazz);
     23 	pool = env->NewGlobalRef(env->GetStaticObjectField(cls, poolFieldID));
     24 	jclass poolClass = env->GetObjectClass(pool);
     25 	obtainMethod = env->GetMethodID(poolClass, obtainName, obtainSig);
     26 	freeMethod = env->GetMethodID(poolClass, freeName, freeSig);
     27 	env->DeleteLocalRef(poolClass);
     28 
     29 	if (typeName && tempField) {
     30 		jfieldID tempFieldID = env->GetStaticFieldID(cls, tempField, typeName);
     31 		tmp = env->NewGlobalRef(env->GetStaticObjectField(cls, tempFieldID));
     32 	}
     33 }
     34 
     35 jobject GdxPool::obtain(JNIEnv * const &e) {
     36 	if (!env) setEnv(e);
     37 	jobject result = env->CallObjectMethod(pool, obtainMethod);
     38 	return result;
     39 }
     40 
     41 void GdxPool::free(jobject &obj) {
     42 	env->CallVoidMethod(pool, freeMethod, obj);
     43 }
     44 
     45 jobject GdxPool::temp(JNIEnv * const &e) {
     46 	if (!env) setEnv(e);
     47 	return tmp;
     48 }
     49 
     50 
     51 
     52 
     53 GdxPooledObject::GdxPooledObject(JNIEnv * const &e, GdxPool * const &pool, const bool &autoFree)
     54 	: pool(pool), autoFree(autoFree), obj(pool->obtain(e)) {
     55 }
     56 GdxPooledObject::GdxPooledObject(JNIEnv * const &e, GdxPool &pool, const bool &autoFree)
     57 	: pool(&pool), autoFree(autoFree), obj(pool.obtain(e)) {
     58 }
     59 GdxPooledObject::~GdxPooledObject() {
     60 	if (autoFree)
     61 		free();
     62 }
     63 void GdxPooledObject::free() {
     64 	pool->free(obj);
     65 }