emo/thin-provisioning-tools
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write some code

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This commit is contained in:
Joe Thornber
2011-06-27 10:45:30 +01:00
parent 2e39670ff9
commit c090bb88b5
9 changed files with 366 additions and 99 deletions
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22
block.h
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@@ -30,6 +30,8 @@ namespace persistent_data {
class block_validator {
public:
typedef boost::shared_ptr<block_validator> ptr;
virtual ~block_validator() {}
virtual void check(block const &b) const = 0;
@@ -37,7 +39,7 @@ namespace persistent_data {
};
struct block {
typedef boost::optional<block_validator> maybe_validator;
typedef boost::optional<typename block_validator::ptr> maybe_validator;
block(block_address location,
maybe_validator v = maybe_validator())
@@ -47,7 +49,7 @@ namespace persistent_data {
block_address location_;
buffer data_;
boost::optional<block_validator> validator_;
maybe_validator validator_;
};
typedef boost::shared_ptr<block> block_ptr;
@@ -67,6 +69,8 @@ namespace persistent_data {
// locked.
class write_ref : public read_ref {
public:
write_ref(block_ptr b);
using read_ref::data;
buffer &data();
};
@@ -86,16 +90,20 @@ namespace persistent_data {
// Validator variants
read_ref
read_lock(block_address location, block_validator const &v);
read_lock(block_address location,
typename block_validator::ptr const &v);
boost::optional<read_ref>
read_try_lock(block_address location, block_validator const &v);
read_try_lock(block_address location,
typename block_validator::ptr const &v);
write_ref
write_lock(block_address location, block_validator const &v);
write_lock(block_address location,
typename block_validator::ptr const &v);
write_ref
write_lock_zero(block_address location, block_validator const &v);
write_lock_zero(block_address location,
typename block_validator::ptr const &v);
// Use this to commit changes
void flush(write_ref super_block);
@@ -111,6 +119,8 @@ namespace persistent_data {
};
}
#include "block.tcc"
//----------------------------------------------------------------
#endif