2 * This file is part of the sigrok project.
4 * Copyright (C) 2014 Marcus Comstedt <marcus@mc.pp.se>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #include "libsigrokandroidutils.h"
21 #include "libsigrokandroidutils-internal.h"
23 static JavaVM *g_jvm = NULL;
24 static jclass g_environment_class = 0;
26 SRAU_PRIV int srau_get_java_env(JNIEnv **env)
34 st = g_jvm->GetEnv((void **)env, JNI_VERSION_1_6);
36 if (st == JNI_EDETACHED) {
37 st = g_jvm->AttachCurrentThread(env, NULL);
42 return (st == JNI_OK? 0 : -1);
45 SRAU_PRIV void srau_unget_java_env(int mode)
48 g_jvm->DetachCurrentThread();
52 SRAU_PRIV jclass srau_get_environment_class(JNIEnv *env)
54 if (env && g_environment_class) {
55 return (jclass)env->NewLocalRef(g_environment_class);
61 jint JNI_OnLoad(JavaVM *vm, void *reserved)
67 if (vm->GetEnv((void **)&env, JNI_VERSION_1_6) != JNI_OK) {
71 jclass envc = env->FindClass("org/sigrok/androidutils/Environment");
73 g_environment_class = (jclass)env->NewGlobalRef(envc);
74 env->DeleteLocalRef(envc);
79 return JNI_VERSION_1_6;
82 void JNI_OnUnload(JavaVM *vm, void *reserved)
90 if (vm->GetEnv((void **)&env, JNI_VERSION_1_6) != JNI_OK) {
94 if (g_environment_class) {
95 env->DeleteGlobalRef(g_environment_class);
96 g_environment_class = 0;