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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 /*
     18  * java.lang.SystemProperties
     19  */
     20 #include "Dalvik.h"
     21 #include "native/InternalNativePriv.h"
     22 
     23 
     24 /*
     25  * Expected call sequence:
     26  *  (1) call SystemProperties.preInit() to get VM defaults
     27  *  (2) set any higher-level defaults
     28  *  (3) call SystemProperties.postInit() to get command-line overrides
     29  * This currently happens the first time somebody tries to access a property.
     30  *
     31  * SystemProperties is a Dalvik-specific package-scope class.
     32  */
     33 
     34 /*
     35  * void preInit()
     36  *
     37  * Tells the VM to populate the properties table with VM defaults.
     38  */
     39 static void Dalvik_java_lang_SystemProperties_preInit(const u4* args,
     40     JValue* pResult)
     41 {
     42     dvmCreateDefaultProperties((Object*) args[0]);
     43     RETURN_VOID();
     44 }
     45 
     46 /*
     47  * void postInit()
     48  *
     49  * Tells the VM to update properties with values from the command line.
     50  */
     51 static void Dalvik_java_lang_SystemProperties_postInit(const u4* args,
     52     JValue* pResult)
     53 {
     54     dvmSetCommandLineProperties((Object*) args[0]);
     55     RETURN_VOID();
     56 }
     57 
     58 const DalvikNativeMethod dvm_java_lang_SystemProperties[] = {
     59     { "preInit",            "()V",
     60         Dalvik_java_lang_SystemProperties_preInit },
     61     { "postInit",           "()V",
     62         Dalvik_java_lang_SystemProperties_postInit },
     63     { NULL, NULL, NULL },
     64 };
     65