/usr/include/odb/section.hxx is in libodb-dev 2.4.0-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// copyright : Copyright (c) 2009-2015 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#ifndef ODB_SECTION_HXX
#define ODB_SECTION_HXX
#include <odb/pre.hxx>
#include <odb/transaction.hxx>
#include <odb/details/export.hxx>
namespace odb
{
class LIBODB_EXPORT section
{
public:
// Load state.
//
bool
loaded () const {return state_.loaded;}
// Mark a loaded section as not loaded. This, for example, can be
// useful if you don't want the section to be reloaded during the
// object reload.
//
void
unload ()
{
state_.loaded = 0;
state_.changed = 0;
state_.restore = 0;
}
// Change state.
//
bool
changed () const {return state_.changed;}
// Mark the section as changed.
//
void
change ()
{
state_.changed = 1;
state_.restore = 0;
}
// User data. 4 bits of custom state.
//
unsigned char
user_data () const {return state_.user;}
void
user_data (unsigned char u) {state_.user = u;}
public:
section ()
{
state_.loaded = 0;
state_.changed = 0;
state_.armed = 0;
state_.restore = 0;
}
~section ()
{
if (state_.armed)
disarm ();
}
// Implementation details.
//
public:
// Arm the callback and set the restore flag if transaction is not NULL.
//
void
reset (bool l = false, bool c = false, transaction* t = 0) const
{
state_.loaded = l;
state_.changed = c;
if (t != 0 && !state_.armed)
{
t->callback_register (&transacion_callback,
const_cast<section*> (this));
state_.armed = 1;
}
state_.restore = (t != 0);
}
private:
void
disarm ();
static void
transacion_callback (unsigned short, void* key, unsigned long long);
private:
mutable struct
{
unsigned char loaded : 1;
unsigned char changed : 1;
unsigned char armed : 1; // Transaction callback is armed.
unsigned char restore: 1; // Restore changed flag on rollback.
unsigned char user : 4; // User data.
} state_;
};
}
#include <odb/post.hxx>
#endif // ODB_SECTION_HXX
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