ObjFW  History of src/OFGZIPStream.m of merge-in:668be94

This allows for a much cleaner solution to avoid the internal read
buffer of e.g. a TLS connection never being processed while waiting for
a delimiter. file: [9545f9339e] check-in: [a61e0594b4] user: js, branch: trunk, size: 7361 [annotate] [blame] [check-ins using] [diff]

This means refusing to close twice, calling -[close] from -[dealloc] and
not calling -[cancelAsyncRequests].

Calling -[cancelAsyncRequests] in -[close] is too dangerous, as -[close]
gets called by -[dealloc]: If the queue is the last reference to the
object, at the point where -[cancelAsyncRequests] removes it from the
queue, the object will start to deallocate and call into
-[cancelAsyncRequests] again, which is still in the middle of removing
it and now finds itself with an inconsistent state. file: [f8e93c416d] check-in: [3b43d51006] user: js, branch: trunk, size: 7342 [annotate] [blame] [check-ins using] [diff]

With this property, it's possible to specify whether the memory should
be protected from swapping or not. This makes it easier for e.g. the
crypto hash classes: They can now just always use OFSecureData without
wasting unswappable memory if it's not needed. file: [d38773fa18] check-in: [e629dc83a9] user: js, branch: trunk, size: 7238 [annotate] [blame] [check-ins using] [diff]

This also adds a parameter for the actual and expected checksum. file: [2759f9564f] check-in: [8f21e8acb5] user: js, branch: trunk, size: 7253 [annotate] [blame] [check-ins using] [diff]

Instead, explicitly declare them, as OF_ASSUME_NONNULL_{BEGIN,END} does
not apply to implicit return types. This means that after this commit,
all init methods have a nonnull return type, as they should have. file: [4ca40a79fe] check-in: [2f4e0df8be] user: js, branch: trunk, size: 6626 [annotate] [blame] [check-ins using] [diff]

There is not much point in having a bi-directional stream for Deflate
compression / decompression. file: [428c033f1c] check-in: [f56a50ee50] user: js, branch: trunk, size: 6361 [annotate] [blame] [check-ins using] [diff]

Instead, let reads return 0 and let writes append after the end. file: [4efebeb9c7] check-in: [f9cd4f9cab] user: js, branch: trunk, size: 6361 [annotate] [blame] [check-ins using] [diff]

Casts are now written like types in variable declarations. file: [e4f1e2e6e9] check-in: [4af49a13c3] user: js, branch: trunk, size: 5829 [annotate] [blame] [check-ins using] [diff]

Forgot to add 2017, even though I already did quite some changes in
2017. file: [1c958d34d5] check-in: [44f45c2e35] user: js, branch: trunk, size: 5826 [annotate] [blame] [check-ins using] [diff]

The reason for renaming to OFInflateStream was to have one stream for
decompression and one for compression in order to reduce memory usage if
only one of the two is needed, as the ivar layout will be smaller then.
However, it is more consistent with other stream classes to have one
stream that can handle both. The increased memory footprint of having
ivars for compression and decompression can be solved by having a
pointer to those instead. This will not incur any performance penalty,
as the pointer will be dereferenced instead of the ivars, meaning the
overhead is only getting the pointer from the ivars once. file: [0950f8ddc7] check-in: [134a1121c7] user: js, branch: trunk, size: 5820 [annotate] [blame] [check-ins using] [diff]