[TYPO3-core] RFC: #7333: Solution for "Page is being generated"

[Michael Stucki]

Attached is a new version which fixes all topics discussed, included that
one below.

Please make a final test of it, and let me know asap. So far it works
perfect here, but I only tried using the "simple" method.

Ingo, can you please commit it for me when approved, so it will be part of
the release tonight?

Thank you guys!

- michael

Michael Stucki wrote:

>> As already discussed with you on Skype (but before we forget it, I write
>> it down *g*):
>> 
>> +                             $key = $this->id.'::'.$this->MP;
>> +                             $isLocked = $this->lockPageGenerate($key); 
>>     // Returns true if the lock is active now
>> 
>> When these two uncached URLs are called nearly at the same time:
>> * index.php?id=111&tx_myext_pi1[uid]=22&cHash=abcd
>> * index.php?id=111&tx_myext_pi1[uid]=33&cHash=dcba
>> 
>> The $key variable which is used for locking is the same in both cases.
>> This would cause a lock and delay were it is not required.
> 
> Correct. For this reason, Bernhard was using two different locks in his
> first patch. However, I moved the places around and finally thought it
> will be hard to place the 2nd lock correctly.
> 
> So I would like to treat this as a bug and have a look at it later, well
> knowing that currently the lock is working disregarding of cHashes...
> 
> - michael

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