OpenShamrock/xposed/src/main/cpp/jnihelper.h

#ifndef SHAMROCK_JNIHELPER_H
#define SHAMROCK_JNIHELPER_H

#include "android/log.h"

namespace JNIHelper {
    static JavaVM *global_jvm = nullptr;

    void initJavaVM(JavaVM *jvm) {
        global_jvm = jvm;
    }

    JNIEnv *getJNIEnv(int *attach) {
        if (global_jvm == NULL) return NULL;

        *attach = 0;
        JNIEnv *jni_env = NULL;

        int status = global_jvm->GetEnv((void **)&jni_env, JNI_VERSION_1_6);

        if (status == JNI_EDETACHED || jni_env == NULL) {
            status = global_jvm->AttachCurrentThread(&jni_env, NULL);
            if (status < 0) {
                jni_env = NULL;
            } else {
                *attach = 1;
            }
        }
        return jni_env;
    }

    jint delJNIEnv() {
        if (global_jvm == nullptr) return 0;
        return global_jvm->DetachCurrentThread();
    }
}



#endif //SHAMROCK_JNIHELPER_H