projects / sigrok-androidutils.git / blame
| Commit | Line | Data |
|---|---|---|
| 2b68989a MC |
1 | /* |
| 2 | * This file is part of the sigrok project. | |
| 3 | * | |
| 4 | * Copyright (C) 2014 Marcus Comstedt <marcus@mc.pp.se> | |
| 5 | * | |
| 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. | |
| 10 | * | |
| 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. | |
| 15 | * | |
| 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/>. | |
| 18 | */ | |
| 19 | ||
| 20 | #include "libsigrokandroidutils.h" | |
| 21 | #include "libsigrokandroidutils-internal.h" | |
| 22 | ||
| 23 | static JavaVM *g_jvm = NULL; | |
| 24 | static jclass g_environment_class = 0; | |
| 25 | ||
| 26 | SRAU_PRIV int srau_get_java_env(JNIEnv **env) | |
| 27 | { | |
| 28 | jint st; | |
| 29 | ||
| 30 | if (g_jvm == NULL) { | |
| 31 | return -1; | |
| 32 | } | |
| 33 | ||
| 34 | st = g_jvm->GetEnv((void **)env, JNI_VERSION_1_6); | |
| 35 | ||
| 36 | if (st == JNI_EDETACHED) { | |
| 37 | st = g_jvm->AttachCurrentThread(env, NULL); | |
| 38 | if (st == JNI_OK) | |
| 39 | return 1; | |
| 40 | } | |
| 41 | ||
| 42 | return (st == JNI_OK? 0 : -1); | |
| 43 | } | |
| 44 | ||
| 45 | SRAU_PRIV void srau_unget_java_env(int mode) | |
| 46 | { | |
| 47 | if (mode == 1) { | |
| 48 | g_jvm->DetachCurrentThread(); | |
| 49 | } | |
| 50 | } | |
| 51 | ||
| 52 | SRAU_PRIV jclass srau_get_environment_class(JNIEnv *env) | |
| 53 | { | |
| 54 | if (env && g_environment_class) { | |
| 55 | return (jclass)env->NewLocalRef(g_environment_class); | |
| 56 | } else { | |
| 57 | return 0; | |
| 58 | } | |
| 59 | } | |
| 60 | ||
| 61 | jint JNI_OnLoad(JavaVM *vm, void *reserved) | |
| 62 | { | |
| 63 | JNIEnv* env; | |
| 64 | ||
| 65 | (void)reserved; | |
| 66 | ||
| 67 | if (vm->GetEnv((void **)&env, JNI_VERSION_1_6) != JNI_OK) { | |
| 68 | return -1; | |
| 69 | } | |
| 70 | ||
| 71 | jclass envc = env->FindClass("org/sigrok/androidutils/Environment"); | |
| 72 | if (envc) { | |
| 73 | g_environment_class = (jclass)env->NewGlobalRef(envc); | |
| 74 | env->DeleteLocalRef(envc); | |
| 75 | } | |
| 76 | ||
| 77 | g_jvm = vm; | |
| 78 | ||
| 79 | return JNI_VERSION_1_6; | |
| 80 | } | |
| 81 | ||
| 82 | void JNI_OnUnload(JavaVM *vm, void *reserved) | |
| 83 | { | |
| 84 | JNIEnv* env; | |
| 85 | ||
| 86 | (void)reserved; | |
| 87 | ||
| 88 | g_jvm = NULL; | |
| 89 | ||
| 90 | if (vm->GetEnv((void **)&env, JNI_VERSION_1_6) != JNI_OK) { | |
| 91 | return; | |
| 92 | } | |
| 93 | ||
| 94 | if (g_environment_class) { | |
| 95 | env->DeleteGlobalRef(g_environment_class); | |
| 96 | g_environment_class = 0; | |
| 97 | } | |
| 98 | } |