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git-svn-id: https://profuse.googlecode.com/svn/branches/v2@208 aa027e90-d47c-11dd-86d7-074df07e0730

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This commit is contained in:
ksherlock
2010-03-22 00:32:27 +00:00
parent e1d01c5298
commit 035d802d70
3 changed files with 20 additions and 66 deletions
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18
Cache/MappedBlockCache.cpp
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@@ -7,6 +7,8 @@
#include <unistd.h>
#include <Cache/MappedBlockCache.h>
#include <Device/BlockDevice.h>
#include <ProFUSE/Exception.h>
@@ -17,7 +19,7 @@ using ProFUSE::Exception;
using ProFUSE::POSIXException;
MappedBlockCache::MappedBlockCache(Device *device, void *data) :
MappedBlockCache::MappedBlockCache(BlockDevice *device, void *data) :
BlockCache(device)
{
_data = (uint8_t *)data;
@@ -42,7 +44,7 @@ void *MappedBlockCache::acquire(unsigned block)
return _data + block * 512;
}
void MappedBlockCache::unload(unsigned block, int flags)
void MappedBlockCache::release(unsigned block, int flags)
{
#undef __METHOD__
#define __METHOD__ "MappedBlockCache::unload"
@@ -50,7 +52,7 @@ void MappedBlockCache::unload(unsigned block, int flags)
// kBlockCommitNow implies kBlockDirty.
if (flags & kBlockCommitNow)
{
sync(block)
sync(block);
return;
}
@@ -75,10 +77,14 @@ void MappedBlockCache::sync(unsigned block)
#define __METHOD__ "MappedBlockCache::sync"
int pageSize = ::getpagesize();
int pagesize = ::getpagesize();
void *start = (_data + block * 512) % pagesize;
void *end = (_data + 512 + block * 512) % pagesize;
void *start = _data + block * 512;
void *end = _data + 512 + block * 512;
start = (void *)((ptrdiff_t)start / pagesize * pagesize);
end = (void *)((ptrdiff_t)end / pagesize * pagesize);
if (::msync(start, pagesize, MS_SYNC) != 0)
throw POSIXException(__METHOD__ ": msync", errno);