Commit Graph

15 Commits

Author SHA1 Message Date
Brian Gianforcaro
1682f0b760 Everything: Move to SPDX license identifiers in all files.
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 *
2021-04-22 11:22:27 +02:00
Andreas Kling
09b1b09c19 Kernel: Assert if rounding-up-to-page-size would wrap around to 0
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.
2021-02-14 10:01:50 +01:00
Andreas Kling
1f277f0bd9 Kernel: Convert all *Builder::appendf() => appendff() 2021-02-09 19:18:13 +01:00
Tom
f98ca35b83 Kernel: Improve ProcFS behavior in low memory conditions
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.
2021-01-03 22:12:19 +01:00
Tom
476f17b3f1 Kernel: Merge PurgeableVMObject into AnonymousVMObject
This implements memory commitments and lazy-allocation of committed
memory.
2021-01-01 23:43:44 +01:00
Andreas Kling
8e79bde2b7 Kernel: Move KBufferBuilder to the fallible KBuffer API
KBufferBuilder::build() now returns an OwnPtr<KBuffer> and can fail.
Clients of the API have been updated to handle that situation.
2020-12-18 19:22:26 +01:00
Andreas Kling
5e164052f6 AK+Kernel: Escape JSON keys & values
Grab the escaping logic from JSON string value serialization and use
it for serializing all keys and values.

Fixes #3917.
2020-11-02 12:56:36 +01:00
Nico Weber
430b265cd4 AK: Rename KB, MB, GB to KiB, MiB, GiB
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.
2020-08-16 16:33:28 +02:00
Sergey Bugaev
63f458ffc1 Kernel: Fix KBufferBuilder::append()
insertion_ptr() already includes the offset.
2020-07-05 12:26:27 +02:00
Sergey Bugaev
450a2a0f9c Build: Switch to CMake :^)
Closes https://github.com/SerenityOS/serenity/issues/2080
2020-05-14 20:15:18 +02:00
Andreas Kling
a356e48150 Kernel: Move all code into the Kernel namespace 2020-02-16 01:27:42 +01:00
Andreas Kling
94ca55cefd Meta: Add license header to source files
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.
2020-01-18 09:45:54 +01:00
Andreas Kling
9e55bcb7da Kernel: Make kernel memory regions be non-executable by default
From now on, you'll have to request executable memory specifically
if you want some.
2019-12-25 22:41:34 +01:00
Andreas Kling
078ee798f7 Kernel: Bump KBufferBuilder VM allocation to 4 MB
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 :^)
2019-12-12 21:58:32 +01:00
Andreas Kling
f083031a27 Kernel: Add KBufferBuilder, similar to StringBuilder but for KBuffer
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.)
2019-08-06 20:04:12 +02:00