2 * This file is part of the sigrok-androidutils 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)
33 st = g_jvm->GetEnv((void **)env, JNI_VERSION_1_6);
35 if (st == JNI_EDETACHED) {
36 st = g_jvm->AttachCurrentThread(env, NULL);
41 return (st == JNI_OK? 0 : -1);
44 SRAU_PRIV void srau_unget_java_env(int mode)
47 g_jvm->DetachCurrentThread();
50 SRAU_PRIV jclass srau_get_environment_class(JNIEnv *env)
52 if (env && g_environment_class)
53 return (jclass)env->NewLocalRef(g_environment_class);
58 jint JNI_OnLoad(JavaVM *vm, void *reserved)
64 if (vm->GetEnv((void **)&env, JNI_VERSION_1_6) != JNI_OK)
67 jclass envc = env->FindClass("org/sigrok/androidutils/Environment");
69 g_environment_class = (jclass)env->NewGlobalRef(envc);
70 env->DeleteLocalRef(envc);
75 return JNI_VERSION_1_6;
78 void JNI_OnUnload(JavaVM *vm, void *reserved)
86 if (vm->GetEnv((void **)&env, JNI_VERSION_1_6) != JNI_OK)
89 if (g_environment_class) {
90 env->DeleteGlobalRef(g_environment_class);
91 g_environment_class = 0;