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Kernel: Encapsulate the Region's COW map a bit better.

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This commit is contained in:
Andreas Kling 2019-05-14 17:31:57 +02:00
parent 2fa5e2b66b
commit 01ffcdfa31
5 changed files with 19 additions and 13 deletions
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12
AK/Bitmap.h
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@ -45,15 +45,19 @@ public:
byte* data() { return m_data; }
const byte* data() const { return m_data; }
void fill(bool value)
{
memset(m_data, value ? 0xff : 0x00, size_in_bytes());
}
private:
explicit Bitmap(int size, bool default_value)
: m_size(size)
, m_owned(true)
{
ASSERT(m_size != 0);
int size_to_allocate = ceil_div(size, 8);
m_data = reinterpret_cast<byte*>(kmalloc(size_to_allocate));
memset(m_data, default_value ? 0xff : 0x00, size_to_allocate);
m_data = reinterpret_cast<byte*>(kmalloc(size_in_bytes()));
fill(default_value);
}
Bitmap(byte* data, int size)
@ -63,6 +67,8 @@ private:
{
}
int size_in_bytes() const { return ceil_div(m_size, 8); }
byte* m_data { nullptr };
int m_size { 0 };
bool m_owned { false };