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Nikola Balog
erp5
Commits
486c7327
Commit
486c7327
authored
Dec 28, 2020
by
Romain Courteaud
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erp5_core: remove unused code
renderJS's mutex must be used instead
parent
3ae314f3
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product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/gadget_global.js.js
...inTemplateItem/portal_skins/erp5_core/gadget_global.js.js
+0
-111
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product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/gadget_global.js.js
View file @
486c7327
...
@@ -182,115 +182,4 @@
...
@@ -182,115 +182,4 @@
});
});
};
};
/** Internal function to prepare gadget to hold a mutex */
function
ensureLockable
(
gadget
)
{
if
(
gadget
.
props
===
undefined
)
{
gadget
.
props
=
{};
}
// waiting_line is container of mutexes which already blocks some Promise
if
(
gadget
.
props
.
waiting_line
===
undefined
)
{
gadget
.
props
.
waiting_line
=
[];
}
}
/** Synchronously lock gadget and return previous lock's promise.
NON-RECURSIVE lock! If you lock inside locked execution you will wait forever.
If used in a Queue (@see lockGadgetInQueue) it blocks when acquiring the lock.
*/
window
.
lockGadget
=
function
(
gadget
)
{
var
ahead_of_me
;
ensureLockable
(
gadget
);
// step in line
gadget
.
props
.
waiting_line
.
push
(
RSVP
.
defer
());
if
(
gadget
.
props
.
waiting_line
.
length
>=
2
)
{
// wait for the promise ahead of me
ahead_of_me
=
gadget
.
props
.
waiting_line
[
gadget
.
props
.
waiting_line
.
length
-
2
].
promise
;
}
else
{
ahead_of_me
=
RSVP
.
resolve
();
}
// return previous lock's Promise to postpone execution
return
ahead_of_me
;
};
/** Lock gadget as a step in RSVP.Queue waiting for previous lock to unlock.
Use in RSVP.Queue to block execution until manually called `unlockGadget`.
Both lock/unlockGadget pass through any value in RSVP.Queue manner.
Pass through any value.
Example:
new RSVP.Queue()
.push(function () {return some_value;})
.push(lockGadgetInQueue(gadget), lockGadgetInFailedQueue(gadget))
.push(function (some_value) {return someWork(some_value);})
.push(unlockGadgetInQueue(gadget), unlockGadgetInFailedQueue(gadget));
*/
window
.
lockGadgetInQueue
=
function
(
gadget
)
{
// return function to be used in RSVP.Queue
return
function
(
pass_through
)
{
return
new
RSVP
.
Queue
()
.
push
(
function
()
{
return
window
.
lockGadget
(
gadget
);
})
.
push
(
function
()
{
return
pass_through
;
});
};
};
/** Lock Gagdet in Queue but intended to be used in "fail" branch (the second function).
Rethrows any argument.
*/
window
.
lockGadgetInFailedQueue
=
function
(
gadget
)
{
// return function to be used in RSVP.Queue
return
function
(
error
)
{
return
new
RSVP
.
Queue
()
.
push
(
function
()
{
return
window
.
lockGadget
(
gadget
);
})
.
push
(
function
()
{
throw
error
;
});
};
};
/** Synchronously unlock gadget by resolving props.mutex.promise.
That promise is most likely blocking some RSVP.Queue or is then-ed on another
Promise.
*/
window
.
unlockGadget
=
function
(
gadget
)
{
if
(
gadget
.
props
===
undefined
||
gadget
.
props
.
waiting_line
===
undefined
||
gadget
.
props
.
waiting_line
.
length
===
0
)
{
throw
new
Error
(
"
Gadget
"
+
gadget
+
"
is not locked!
"
);
}
gadget
.
props
.
waiting_line
.
shift
().
resolve
();
};
/** Unlock gadget without blocking as a step in RSVP.Queue.
Pass through any value. Not re-throwing errors in fail branch!
For example @see lockGadgetInQueue.
*/
window
.
unlockGadgetInQueue
=
function
(
gadget
)
{
return
function
(
pass_through
)
{
window
.
unlockGadget
(
gadget
);
return
pass_through
;
};
};
/** Unlock gadget without blocking and throw any argument received. */
window
.
unlockGadgetInFailedQueue
=
function
(
gadget
)
{
return
function
(
error
)
{
window
.
unlockGadget
(
gadget
);
throw
error
;
};
};
}(
window
,
RSVP
,
FileReader
));
}(
window
,
RSVP
,
FileReader
));
\ No newline at end of file
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