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GraphicsBitmap: munmap() pixels on destruction of self-allocating bitmaps.

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This commit is contained in:
Andreas Kling 2019-04-26 18:25:05 +02:00
parent d93c278d29
commit e90b501b31
2 changed files with 7 additions and 0 deletions
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6
SharedGraphics/GraphicsBitmap.cpp
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@ -21,6 +21,7 @@ GraphicsBitmap::GraphicsBitmap(Format format, const Size& size)
m_data = (RGBA32*)mmap(nullptr, size_in_bytes, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0); m_data = (RGBA32*)mmap(nullptr, size_in_bytes, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
ASSERT(m_data && m_data != (void*)-1); ASSERT(m_data && m_data != (void*)-1);
set_mmap_name(m_data, size_in_bytes, String::format("GraphicsBitmap [%dx%d]", width(), height()).characters()); set_mmap_name(m_data, size_in_bytes, String::format("GraphicsBitmap [%dx%d]", width(), height()).characters());
m_needs_munmap = true;
} }
Retained<GraphicsBitmap> GraphicsBitmap::create_wrapper(Format format, const Size& size, RGBA32* data) Retained<GraphicsBitmap> GraphicsBitmap::create_wrapper(Format format, const Size& size, RGBA32* data)
@ -74,6 +75,11 @@ GraphicsBitmap::GraphicsBitmap(Format format, Retained<SharedBuffer>&& shared_bu
GraphicsBitmap::~GraphicsBitmap() GraphicsBitmap::~GraphicsBitmap()
{ {
if (m_needs_munmap) {
size_t size_in_bytes = m_size.area() * sizeof(RGBA32);
int rc = munmap(m_data, size_in_bytes);
ASSERT(rc == 0);
}
m_data = nullptr; m_data = nullptr;
} }

1
SharedGraphics/GraphicsBitmap.h
View file

@ -43,6 +43,7 @@ private:
RGBA32* m_data { nullptr }; RGBA32* m_data { nullptr };
size_t m_pitch { 0 }; size_t m_pitch { 0 };
Format m_format { Format::Invalid }; Format m_format { Format::Invalid };
bool m_needs_munmap { false };
MappedFile m_mapped_file; MappedFile m_mapped_file;
RetainPtr<SharedBuffer> m_shared_buffer; RetainPtr<SharedBuffer> m_shared_buffer;
}; };