53 lines
872 B
C++
53 lines
872 B
C++
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#include <algorithm>
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#include <cerrno>
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#include <cstring>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <Cache/BlockCache.h>
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#include <Device/BlockDevice.h>
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#include <ProFUSE/Exception.h>
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#include <ProFUSE/auto.h>
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using namespace Device;
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using ProFUSE::Exception;
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using ProFUSE::POSIXException;
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#pragma mark -
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#pragma mark BlockCache
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BlockCache::BlockCache(BlockDevice *device)
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{
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_device = _device;
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_blocks = device->blocks();
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_readOnly = device->readOnly();
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}
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BlockCache::~BlockCache()
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{
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delete _device;
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}
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void BlockCache::write(unsigned block, const void *bp)
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{
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void *address = acquire(block);
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std::memcpy(address, bp, 512);
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release(block, true);
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}
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void BlockCache::read(unsigned block, void *bp)
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{
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void *address = acquire(block);
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std::memcpy(bp, address, 512);
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release(block, false);
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}
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