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AK: Turn ByteBuffer into a value type

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Previously ByteBuffer would internally hold a RefPtr to the byte
buffer and would behave like a reference type, i.e. copying a
ByteBuffer would not create a duplicate byte buffer, but rather
two objects which refer to the same internal buffer.

This also changes ByteBuffer so that it has some internal capacity
much like the Vector<T> type. Unlike Vector<T> however a byte
buffer's data may be uninitialized.

With this commit ByteBuffer makes use of the kmalloc_good_size()
API to pick an optimal allocation size for its internal buffer.
This commit is contained in:
Gunnar Beutner 2021-05-14 20:53:04 +02:00 • committed by Andreas Kling
commit fcaf98361f
Notes: sideshowbarker 2024-07-18 18:01:58 +09:00
9 changed files with 176 additions and 236 deletions
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2
Tests/LibC/strlcpy-correctness.cpp
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@ -57,7 +57,7 @@ static bool test_single(const Testcase& testcase)
// Setup
ByteBuffer actual = ByteBuffer::create_uninitialized(SANDBOX_CANARY_SIZE + testcase.dest_n + SANDBOX_CANARY_SIZE);
fill_with_random(actual.data(), actual.size());
ByteBuffer expected = actual.isolated_copy();
ByteBuffer expected = actual;
VERIFY(actual.offset_pointer(0) != expected.offset_pointer(0));
actual.overwrite(SANDBOX_CANARY_SIZE, testcase.dest, testcase.dest_n);
expected.overwrite(SANDBOX_CANARY_SIZE, testcase.dest_expected, testcase.dest_expected_n);