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path: root/Kernel/KBufferBuilder.cpp
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2022-07-12Everywhere: Add sv suffix to strings relying on StringView(char const*)sin-ack
Each of these strings would previously rely on StringView's char const* constructor overload, which would call __builtin_strlen on the string. Since we now have operator ""sv, we can replace these with much simpler versions. This opens the door to being able to remove StringView(char const*). No functional changes.
2022-07-12Kernel: Annotate all `KBuffer` and `DoubleBuffer` with a custom nameTim Schumacher
2022-04-01Everywhere: Run clang-formatIdan Horowitz
2021-12-30Kernel+AK: Eliminate a couple of temporary String allocationsDaniel Bertalan
2021-12-28Kernel: Propagate overflow errors from Memory::page_round_upGuilherme Goncalves
Fixes #11402.
2021-11-11Everywhere: Pass AK::StringView by valueAndreas Kling
2021-11-08Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>Andreas Kling
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
2021-09-13AK+Kernel: Avoid unescaped control chars in append_escaped_for_json()Ali Mohammad Pur
Otherwise it could produce invalid JSON.
2021-09-07Kernel: Make it possible for KBufferBuilder creation to failAndreas Kling
This patch adds KBufferBuilder::try_create() and treats it like anything else that can fail. And so, failure to allocate the initial internal buffer of the builder will now propagate an ENOMEM to the caller. :^)
2021-09-07Kernel: Make KBufferBuilder use KBuffer instead of KBufferImplAndreas Kling
This was the last remaining direct client of the KBufferImpl class outside of KBuffer.
2021-09-06Kernel: Make KBufferBuilder::append() & friends return KResultAndreas Kling
This allows callers to react to a failed append (due to OOM.)
2021-08-06Kernel: Add convenience values to the Memory::Region::Access enumAndreas Kling
Instead of `Memory::Region::Access::Read | Memory::Region::AccessWrite` you can now say `Memory::Region::Access::ReadWrite`.
2021-08-06Kernel: Move Kernel/Memory/ code into Kernel::Memory namespaceAndreas Kling
2021-07-20Kernel: Remove KBufferBuilder's can_expand restrictionAndreas Kling
KBufferBuilder is always allowed to expand if it wants to. This restriction was added a long time ago when it was unsafe to allocate VM while generating ProcFS contents.
2021-07-20Kernel: Remove KBufferBuilder API for reusing an existing bufferAndreas Kling
This is not used anywhere anymore anyway.
2021-06-24Everywhere: Use nothrow new with `adopt_{ref,own}_if_nonnull`Daniel Bertalan
This commit converts naked `new`s to `AK::try_make` and `AK::try_create` wherever possible. If the called constructor is private, this can not be done, so we instead now use the standard-defined and compiler-agnostic `new (nothrow)`.
2021-05-13Kernel: Replace make<T>() with adopt_own_if_nonnull() in KBufferBuilderBrian Gianforcaro
The make<T> factory function allocates internally and immediately dereferences the pointer, and always returns a NonnullOwnPtr<T> making it impossible to propagate an error on OOM.
2021-04-22Everything: Move to SPDX license identifiers in all files.Brian Gianforcaro
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-02-14Kernel: Assert if rounding-up-to-page-size would wrap around to 0Andreas Kling
If we try to align a number above 0xfffff000 to the next multiple of the page size (4 KiB), it would wrap around to 0. This is most likely never what we want, so let's assert if that happens.
2021-02-09Kernel: Convert all *Builder::appendf() => appendff()Andreas Kling
2021-01-03Kernel: Improve ProcFS behavior in low memory conditionsTom
When ProcFS could no longer allocate KBuffer objects to serve calls to read, it would just return 0, indicating EOF. This then triggered parsing errors because code assumed it read the file. Because read isn't supposed to return ENOMEM, change ProcFS to populate the file data upon file open or seek to the beginning. This also means that calls to open can now return ENOMEM if needed. This allows the caller to either be able to successfully open the file and read it, or fail to open it in the first place.
2021-01-01Kernel: Merge PurgeableVMObject into AnonymousVMObjectTom
This implements memory commitments and lazy-allocation of committed memory.
2020-12-18Kernel: Move KBufferBuilder to the fallible KBuffer APIAndreas Kling
KBufferBuilder::build() now returns an OwnPtr<KBuffer> and can fail. Clients of the API have been updated to handle that situation.
2020-11-02AK+Kernel: Escape JSON keys & valuesAndreas Kling
Grab the escaping logic from JSON string value serialization and use it for serializing all keys and values. Fixes #3917.
2020-08-16AK: Rename KB, MB, GB to KiB, MiB, GiBNico Weber
The SI prefixes "k", "M", "G" mean "10^3", "10^6", "10^9". The IEC prefixes "Ki", "Mi", "Gi" mean "2^10", "2^20", "2^30". Let's use the correct name, at least in code. Only changes the name of the constants, no other behavior change.
2020-07-05Kernel: Fix KBufferBuilder::append()Sergey Bugaev
insertion_ptr() already includes the offset.
2020-05-14Build: Switch to CMake :^)Sergey Bugaev
Closes https://github.com/SerenityOS/serenity/issues/2080
2020-02-16Kernel: Move all code into the Kernel namespaceAndreas Kling
2020-01-18Meta: Add license header to source filesAndreas Kling
As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2019-12-25Kernel: Make kernel memory regions be non-executable by defaultAndreas Kling
From now on, you'll have to request executable memory specifically if you want some.
2019-12-12Kernel: Bump KBufferBuilder VM allocation to 4 MBAndreas Kling
This is pretty large but since it's not eagerly committed to physical pages, it's probably okay. I'm bumping this after running out of space for a ProtocolServer profile run :^)
2019-08-06Kernel: Add KBufferBuilder, similar to StringBuilder but for KBufferAndreas Kling
This class works by eagerly allocating 1MB of virtual memory but only adding physical pages on demand. In other words, when you append to it, its memory usage will increase by 1 page whenever you append across a page boundary (4KB.)
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