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10 Commits

Author SHA1 Message Date
Andreas Kling
b91c49364d AK: Rename adopt() to adopt_ref() 
This makes it more symmetrical with adopt_own() (which is used to
create a NonnullOwnPtr from the result of a naked new.)
 2021-04-23 16:46:57 +02:00
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
5d180d1f99 Everywhere: Rename ASSERT => VERIFY 
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED)

Since all of these checks are done in release builds as well,
let's rename them to VERIFY to prevent confusion, as everyone is
used to assertions being compiled out in release.

We can introduce a new ASSERT macro that is specifically for debug
checks, but I'm doing this wholesale conversion first since we've
accumulated thousands of these already, and it's not immediately
obvious which ones are suitable for ASSERT.
 2021-02-23 20:56:54 +01:00
Andreas Kling
0dbb22e9e0 Kernel: Remove a handful of unused things in VM/ directory 
Also add some missing initializers.
 2021-02-11 22:02:39 +01:00
AnotherTest
09a43969ba Everywhere: Replace dbgln<flag>(...) with dbgln_if(flag, ...) 
Replacement made by `find Kernel Userland -name '*.h' -o -name '*.cpp' | sed -i -Ee 's/dbgln\b<(\w+)>\(/dbgln_if(\1, /g'`
 2021-02-08 18:08:55 +01:00
Tom
affb4ef01b Kernel: Allow specifying a physical alignment when allocating 
Some drivers may require allocating contiguous physical pages with
a specific alignment for the physical address.
 2021-01-28 18:52:59 +01:00
asynts
8465683dcf Everywhere: Debug macros instead of constexpr. 
This was done with the following script:

    find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/dbgln<debug_([a-z_]+)>/dbgln<\U\1_DEBUG>/' {} \;

    find . \( -name '*.cpp' -o -name '*.h' -o -name '*.in' \) -not -path './Toolchain/*' -not -path './Build/*' -exec sed -i -E 's/if constexpr \(debug_([a-z0-9_]+)/if constexpr \(\U\1_DEBUG/' {} \;
 2021-01-25 09:47:36 +01:00
asynts
27bc48e06c Everywhere: Replace a bundle of dbg with dbgln. 
These changes are arbitrarily divided into multiple commits to make it
easier to find potentially introduced bugs with git bisect.
 2021-01-22 22:14:30 +01:00
Tom
b2a52f6208 Kernel: Implement lazy committed page allocation 
By designating a committed page pool we can guarantee to have physical
pages available for lazy allocation in mappings. However, when forking
we will overcommit. The assumption is that worst-case it's better for
the fork to die due to insufficient physical memory on COW access than
the parent that created the region. If a fork wants to ensure that all
memory is available (trigger a commit) then it can use madvise.

This also means that fork now can gracefully fail if we don't have
enough physical pages available.
 2021-01-01 23:43:44 +01:00
Liav A
d6e122fd3a Kernel: Allow contiguous allocations in physical memory 
For that, we have a new type of VMObject, called
ContiguousVMObject, that is responsible for allocating contiguous
physical pages.
 2020-03-08 14:13:30 +01:00