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AK: Turn ByteBuffer into a value type
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.
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9 changed files with 176 additions and 236 deletions
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@ -55,7 +55,7 @@ static bool test_single(const Testcase& testcase)
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// Setup
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ByteBuffer actual = ByteBuffer::create_uninitialized(SANDBOX_CANARY_SIZE + testcase.dest_n + SANDBOX_CANARY_SIZE);
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fill_with_random(actual.data(), actual.size());
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ByteBuffer expected = actual.isolated_copy();
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ByteBuffer expected = actual;
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VERIFY(actual.offset_pointer(0) != expected.offset_pointer(0));
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actual.overwrite(SANDBOX_CANARY_SIZE, testcase.dest, testcase.dest_n);
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expected.overwrite(SANDBOX_CANARY_SIZE, testcase.dest_expected, testcase.dest_expected_n);
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