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This commit is contained in:
Joe Thornber
2014-07-28 14:13:28 +01:00
parent ab6d31f136
commit 840be1b6c9
4 changed files with 155 additions and 203 deletions
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17
persistent-data/block.h
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@@ -55,15 +55,11 @@ namespace persistent_data {
unsigned max_concurrent_locks,
mode m);
typedef void (*put_behaviour_fn)(block_cache &, block_cache::block &);
class read_ref {
public:
static uint32_t const BLOCK_SIZE = BlockSize;
read_ref(block_cache &bc,
block_cache::block &b,
put_behaviour_fn fn);
read_ref(block_cache::block &b);
read_ref(read_ref const &rhs);
virtual ~read_ref();
@@ -74,19 +70,14 @@ namespace persistent_data {
void const *data() const;
protected:
block_cache &bc_;
block_cache::block &b_;
put_behaviour_fn fn_;
unsigned *holders_;
};
// Inherited from read_ref, since you can read a block that's write
// locked.
class write_ref : public read_ref {
public:
write_ref(block_cache &bc,
block_cache::block &b,
put_behaviour_fn fn);
write_ref(block_cache::block &b);
using read_ref::data;
void *data();
@@ -94,9 +85,7 @@ namespace persistent_data {
class super_ref : public write_ref {
public:
super_ref(block_cache &bc,
block_cache::block &b,
put_behaviour_fn fn);
super_ref(block_cache::block &b);
using read_ref::data;
using write_ref::data;