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Kernel+Userland: Remove shared buffers (shbufs)
All users of this mechanism have been switched to anonymous files and passing file descriptors with sendfd()/recvfd(). Shbufs got us where we are today, but it's time we say good-bye to them and welcome a much more idiomatic replacement. :^)
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2cd16778b5
commit
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28 changed files with 2 additions and 1022 deletions
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@ -28,7 +28,6 @@
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#include "Emulator.h"
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#include "MmapRegion.h"
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#include "Report.h"
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#include "SharedBufferRegion.h"
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#include <AK/ByteBuffer.h>
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#include <AK/Memory.h>
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@ -43,10 +42,6 @@ void SoftMMU::add_region(NonnullOwnPtr<Region> region)
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{
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ASSERT(!find_region({ 0x23, region->base() }));
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// FIXME: More sanity checks pls
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if (is<SharedBufferRegion>(*region))
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m_shbuf_regions.set(static_cast<SharedBufferRegion*>(region.ptr())->shbuf_id(), region.ptr());
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size_t first_page_in_region = region->base() / PAGE_SIZE;
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size_t last_page_in_region = (region->base() + region->size() - 1) / PAGE_SIZE;
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for (size_t page = first_page_in_region; page <= last_page_in_region; ++page) {
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@ -63,8 +58,6 @@ void SoftMMU::remove_region(Region& region)
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m_page_to_region_map[first_page_in_region + i] = nullptr;
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}
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if (is<SharedBufferRegion>(region))
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m_shbuf_regions.remove(static_cast<SharedBufferRegion&>(region).shbuf_id());
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m_regions.remove_first_matching([&](auto& entry) { return entry.ptr() == ®ion; });
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}
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@ -238,11 +231,6 @@ ByteBuffer SoftMMU::copy_buffer_from_vm(const FlatPtr source, size_t size)
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return buffer;
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}
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SharedBufferRegion* SoftMMU::shbuf_region(int shbuf_id)
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{
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return (SharedBufferRegion*)m_shbuf_regions.get(shbuf_id).value_or(nullptr);
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}
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bool SoftMMU::fast_fill_memory8(X86::LogicalAddress address, size_t size, ValueWithShadow<u8> value)
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{
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if (!size)
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