X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=lib%2Fjvm_glue.cpp;fp=lib%2Fjvm_glue.cpp;h=7dbd03bcf20da96ee53ae76eb18125861dc19a6b;hb=2b68989afe2dcb949c8ff7864d0d7594bd875284;hp=0000000000000000000000000000000000000000;hpb=5d83f11e8866618c1432ad1e730f7ad221b24a0e;p=sigrok-androidutils.git

diff --git a/lib/jvm_glue.cpp b/lib/jvm_glue.cpp
new file mode 100644
index 0000000..7dbd03b
--- /dev/null
+++ b/lib/jvm_glue.cpp
@@ -0,0 +1,98 @@
+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2014 Marcus Comstedt <marcus@mc.pp.se>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "libsigrokandroidutils.h"
+#include "libsigrokandroidutils-internal.h"
+
+static JavaVM *g_jvm = NULL;
+static jclass g_environment_class = 0;
+
+SRAU_PRIV int srau_get_java_env(JNIEnv **env)
+{
+	jint st;
+
+	if (g_jvm == NULL) {
+		return -1;
+	}
+
+	st = g_jvm->GetEnv((void **)env, JNI_VERSION_1_6);
+
+	if (st == JNI_EDETACHED) {
+		st = g_jvm->AttachCurrentThread(env, NULL);
+		if (st == JNI_OK)
+			return 1;
+	}
+
+	return (st == JNI_OK? 0 : -1);
+}
+
+SRAU_PRIV void srau_unget_java_env(int mode)
+{
+	if (mode == 1) {
+		g_jvm->DetachCurrentThread();
+	}
+}
+
+SRAU_PRIV jclass srau_get_environment_class(JNIEnv *env)
+{
+	if (env && g_environment_class) {
+		return (jclass)env->NewLocalRef(g_environment_class);
+	} else {
+		return 0;
+	}
+}
+
+jint JNI_OnLoad(JavaVM *vm, void *reserved)
+{
+	JNIEnv* env;
+
+	(void)reserved;
+
+        if (vm->GetEnv((void **)&env, JNI_VERSION_1_6) != JNI_OK) {
+                return -1;
+        }
+
+        jclass envc = env->FindClass("org/sigrok/androidutils/Environment");
+	if (envc) {
+		g_environment_class = (jclass)env->NewGlobalRef(envc);
+		env->DeleteLocalRef(envc);
+	}
+
+	g_jvm = vm;
+
+	return JNI_VERSION_1_6;
+}
+
+void JNI_OnUnload(JavaVM *vm, void *reserved)
+{
+	JNIEnv* env;
+
+	(void)reserved;
+
+	g_jvm = NULL;
+
+        if (vm->GetEnv((void **)&env, JNI_VERSION_1_6) != JNI_OK) {
+                return;
+        }
+
+	if (g_environment_class) {
+		env->DeleteGlobalRef(g_environment_class);
+		g_environment_class = 0;
+	}
+}