Hi Claes,

I don’t like the PropertiesWrapper idea.  The caller should be cautious in 
storing any sensitive information.  For the system properties, these callsites 
use it in the local scope that I don’t see any reason and benefit to introduce 
a wrapper.  I didn’t follow this discussion closely and I may miss some reason ?

Mandy

> On Jun 9, 2016, at 5:31 PM, Claes Redestad <claes.redes...@oracle.com> wrote:
> 
> Hi,
> 
> by using a non-exported type, PropertiesWrapper, to encapsulate Properties 
> this change makes it impossible for a JDK developer to accidentally leak 
> system properties outside of java.base without breaking encapsulation. I 
> believe that was yours and Sean's main concern about the API changes to 
> GetPropertyAction that this is hopefully a final amendment to.
> 
> Generally the changes to streamline system property access bring about minor 
> improvements to startup and footprint by reducing the number of classes 
> generated and loaded as well as the number of doPriv calls done.
> 
> /Claes
> 
> On 2016-06-08 03:24, Xuelei Fan wrote:
>> Hi Claes,
>> 
>> What's the necessary to get all system properties for just one specific
>> one?  Can you explain more about the necessary to make the change?
>> 
>> Thanks,
>> Xuelei
>> 
>> On 6/8/2016 3:44 AM, Claes Redestad wrote:
>>> Hi,
>>> 
>>> there is some lingering concern that this and related changes make it
>>> that much easier to accidentally leak the system Properties object
>>> outside of core modules. By wrapping access to the system Properties
>>> object in a class residing in a non-exported package we disallow this at
>>> little to no cost:
>>> 
>>> http://cr.openjdk.java.net/~redestad/8155039/webrev.02/
>>> 
>>> /Claes
>>> 
>>> On 2016-05-12 15:37, Claes Redestad wrote:
>>>> Hi,
>>>> 
>>>> the API this improvement depends on was updated to reflect more clearly
>>>> that this
>>>> is taking a privileged action:
>>>> https://bugs.openjdk.java.net/browse/JDK-8155775
>>>> 
>>>> Here's the updated webrev:
>>>> http://cr.openjdk.java.net/~redestad/8155039/webrev.01/
>>>> 
>>>> Thanks!
>>>> 
>>>> /Claes
>>>> 
>>>> On 2016-04-25 19:28, Claes Redestad wrote:
>>>>> Hi,
>>>>> 
>>>>> SSLContextImpl and TrustManagerFactoryImpl has some setup code that
>>>>> could be
>>>>> simplified, getting rid of a couple of anonymous classes in the process.
>>>>> 
>>>>> Webrev: http://cr.openjdk.java.net/~redestad/8155039/webrev.00
>>>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8155039
>>>>> 
>>>>> Alternatively we could remove OpenFileInputStreamAction instead since
>>>>> these two uses
>>>>> introduced here are actually the only active uses of this old
>>>>> convenience class.
>>>>> 
>>>>> Thanks!
>>>>> 
>>>>> /Claes
>>>> 
>> 

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