44b2367fdc
This is a re-design of commit 0041801. mraa_lang_func_t structure has been added (similar in design to mraa_adv_func_t) that points to JNI functions implemented in src/java/mraajni.c. Functions are set by libmraajava.so, see wrapper entry in src/java/mraajava.i. As gpio.c now uses these functions, language specific #ifdef code has been removed as JNI code is only called if functions are defined (i.e. not NULL) Signed-off-by: Henry Bruce <henry.bruce@intel.com> Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
103 lines
3.0 KiB
C
103 lines
3.0 KiB
C
/*
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* Author: Henry Bruce <henry.bruce@intel.com>
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* Copyright (c) 2016 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <pthread.h>
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#include "java/mraajni.h"
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static pthread_key_t env_key;
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static pthread_once_t env_key_init = PTHREAD_ONCE_INIT;
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static jmethodID runGlobal;
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static JavaVM* globVM = NULL;
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void
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mraa_java_set_jvm(JavaVM* vm)
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{
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globVM = vm;
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}
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static void
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mraa_java_make_env_key(void)
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{
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if (globVM != NULL) {
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JNIEnv* jenv;
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(*globVM)->GetEnv(globVM, (void**) &jenv, JNI_VERSION_1_8);
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jclass rcls = (*jenv)->FindClass(jenv, "java/lang/Runnable");
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jmethodID runm = (*jenv)->GetMethodID(jenv, rcls, "run", "()V");
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runGlobal = (jmethodID)(*jenv)->NewGlobalRef(jenv, (jobject) runm);
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pthread_key_create(&env_key, NULL);
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}
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}
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void
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mraa_java_isr_callback(void* data)
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{
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JNIEnv* jenv = (JNIEnv*) pthread_getspecific(env_key);
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(*jenv)->CallVoidMethod(jenv, (jobject) data, runGlobal);
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}
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mraa_result_t
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mraa_java_attach_thread()
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{
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if (globVM != NULL) {
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JNIEnv* jenv;
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jint err = (*globVM)->AttachCurrentThreadAsDaemon(globVM, (void**) &jenv, NULL);
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if (err == JNI_OK) {
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pthread_once(&env_key_init, mraa_java_make_env_key);
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pthread_setspecific(env_key, jenv);
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return MRAA_SUCCESS;
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}
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}
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return MRAA_ERROR_UNSPECIFIED;
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}
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void
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mraa_java_detach_thread()
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{
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if (globVM != NULL)
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(*globVM)->DetachCurrentThread(globVM);
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}
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void*
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mraa_java_create_global_ref(void* args)
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{
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if (globVM != NULL) {
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JNIEnv* jenv;
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(*globVM)->GetEnv(globVM, (void**) &jenv, JNI_VERSION_1_8);
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jobject grunnable = (*jenv)->NewGlobalRef(jenv, (jobject) args);
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return (void*) grunnable;
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} else
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return NULL;
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}
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void
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mraa_java_delete_global_ref(void* ref)
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{
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if (globVM != NULL) {
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JNIEnv* jenv;
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(*globVM)->GetEnv(globVM, (void**) &jenv, JNI_VERSION_1_8);
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(*jenv)->DeleteGlobalRef(jenv, (jobject) ref);
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}
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}
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