> On Nov 2, 2016, at 9:18 PM, Xuelei Fan <[email protected]> wrote:
>
> On 11/2/2016 8:47 PM, Wang Weijun wrote:
>>
>>> On Nov 2, 2016, at 5:34 PM, Xuelei Fan <[email protected]> wrote:
>>>
>>> 1. More specific
>>>
>>> "A SecureRandom service provider can advertise that it is
>>> thread-safe by setting the service provider attribute
>>> "ThreadSafe" to "true" when registering the provider."
>>>
>>> A service provider may contains many services implementations. May need to
>>> be more specific to set "ThreadSafe" for SecureRandom only, rather the full
>>> provider is thread safe. For example:
>>>
>>> map.put("SecureRandom.SHA1PRNG ThreadSafe", "true");
>>>
>>> Otherwise, a service provider need to make sure all services are thread
>>> safe, or all services implementation are not thread safe.
>>
>> How about changing "A SecureRandom service provider" to "A SecureRandom
>> implementation"?
>>
> I don't think it is sufficient. See bellow.
>
>>>
>>> 2. "true" is the only true property value.
>>> "If this attribute is not set or is "false", this class will
>>> instead ..."
>>>
>>> If the attribute is set to "yes" or "hello, world!", I think it is the same
>>> as set to "false" per your current implementation.
>>>
>>> "Otherwise, this class will ... "
>>
>> OK.
>>
>>>
>>> May need to update the implementation accordingly if you accept the
>>> comments.
>>
>> Why update the implementation?
>>
> If I'm reading correct, you are setting the "ThreadSafe" for provider, but
> not for SecureRandom implementation.
Sorry but I don't understand what you mean.
On read side, the threadSafe field is for each "SecureRandom." + algorithm, so
it is for an implementation.
On write side, every call looks like the line you write below.
> I may use the property similar to:
>
> map.put("SecureRandom.SHA1PRNG ThreadSafe", "true");
>
> That's why I don't think above update is not sufficient.
Can you point out on exactly which line in webrev I'm doing wrong?
Thanks
Max
>
> Xuelei
>
>> Thanks
>> Max
>>
>>>
>>> Xuelei
>>>
>>>
>>> On 11/2/2016 3:27 PM, Wang Weijun wrote:
>>>> Ping again.
>>>>
>>>> There is an updated version at
>>>> http://cr.openjdk.java.net/~weijun/7004967/webrev.01/ with doc-only
>>>> changes.
>>>>
>>>> Thanks
>>>> Max
>>>>
>>>>> On Aug 25, 2016, at 10:00 AM, Weijun Wang <[email protected]> wrote:
>>>>>
>>>>> Please review the enhancement at
>>>>>
>>>>> http://cr.openjdk.java.net/~weijun/7004967/webrev.00/
>>>>>
>>>>> Basically, we want SecureRandom to be more efficient by removing all
>>>>> synchronized keywords from its public methods and let an implementation
>>>>> to take care of thread-safety (We already did some in JDK-8098581). On
>>>>> the other hand, we need to make sure that existing implementations that
>>>>> have not synchronized correctly to behave just as good as before.
>>>>>
>>>>> Therefore a new Service Attribute "ThreadSafe" is introduced. If you
>>>>> think your implementation is already thread-safe, set it to "true" and
>>>>> SecureRandom will be happy. Otherwise, don't set it and SecureRandom will
>>>>> continuously call your SecureRandomSpi engine methods in synchronized
>>>>> blocks.
>>>>>
>>>>> Thanks
>>>>> Max
