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Kernel: Move KBufferBuilder to the fallible KBuffer API

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KBufferBuilder::build() now returns an OwnPtr<KBuffer> and can fail.
Clients of the API have been updated to handle that situation.
This commit is contained in:
Andreas Kling 2020-12-18 14:10:10 +01:00
parent d936d86332
commit 8e79bde2b7
18 changed files with 121 additions and 100 deletions
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12
Kernel/KBufferBuilder.cpp
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@ -33,19 +33,21 @@ namespace Kernel {
inline bool KBufferBuilder::can_append(size_t size) const
{
bool has_space = ((m_size + size) < m_buffer.size());
if (!m_buffer)
return false;
bool has_space = ((m_size + size) < m_buffer->size());
ASSERT(has_space);
return has_space;
}
KBuffer KBufferBuilder::build()
OwnPtr<KBuffer> KBufferBuilder::build()
{
m_buffer.set_size(m_size);
return m_buffer;
m_buffer->set_size(m_size);
return m_buffer.release_nonnull();
}
KBufferBuilder::KBufferBuilder()
: m_buffer(KBuffer::create_with_size(4 * MiB, Region::Access::Read | Region::Access::Write))
: m_buffer(KBuffer::try_create_with_size(4 * MiB, Region::Access::Read | Region::Access::Write))
{
}