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added type() to alerts, to not require rtti support

This commit is contained in:
Arvid Norberg 2009-10-30 03:21:25 +00:00
parent cd0fc85b5f
commit 380dbd5600
3 changed files with 246 additions and 338 deletions
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29
docs/manual.rst
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@ -4723,12 +4723,35 @@ is its synopsis:
virtual ~alert(); virtual ~alert();
virtual int type() const = 0;
virtual std::string message() const = 0; virtual std::string message() const = 0;
virtual char const* what() const = 0; virtual char const* what() const = 0;
virtual int category() const = 0; virtual int category() const = 0;
virtual std::auto_ptr<alert> clone() const = 0; virtual std::auto_ptr<alert> clone() const = 0;
}; };
``type()`` returns an integer that is unique to this alert type. It can be
compared against a specific alert by querying a static constant called ``alert_type``
in the alert. It can be used to determine the run-time type of an alert* in
order to cast to that alert type and access specific members.
e.g::
std::auto_ptr<alert> a = ses.pop_alert();
switch (a->type())
{
case read_piece_alert::alert_type:
{
read_piece_alert* p = (read_piece_alert*)a.get();
// use p
break;
}
case file_renamed_alert::alert_type:
{
// etc...
}
}
``what()`` returns a string literal describing the type of the alert. It does ``what()`` returns a string literal describing the type of the alert. It does
not include any information that might be bundled with the alert. not include any information that might be bundled with the alert.
@ -4844,7 +4867,7 @@ mappings.
``mapping`` refers to the mapping index of the port map that failed, i.e. ``mapping`` refers to the mapping index of the port map that failed, i.e.
the index returned from add_mapping_. the index returned from add_mapping_.
``type`` is 0 for NAT-PMP and 1 for UPnP. ``map_type`` is 0 for NAT-PMP and 1 for UPnP.
``error`` tells you what failed. ``error`` tells you what failed.
:: ::
@ -4879,7 +4902,7 @@ the index returned from add_mapping_.
// ... // ...
int mapping; int mapping;
int external_port; int external_port;
int type; int map_type;
}; };
portmap_log_alert portmap_log_alert
@ -4895,7 +4918,7 @@ for debugging the UPnP or NAT-PMP implementation.
struct portmap_log_alert: alert struct portmap_log_alert: alert
{ {
//... //...
int type; int map_type;
std::string msg; std::string msg;
}; };

8
include/libtorrent/alert.hpp
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@ -69,8 +69,10 @@ namespace libtorrent {
{ {
public: public:
#ifndef TORRENT_NO_DEPRECATE
// only here for backwards compatibility // only here for backwards compatibility
enum severity_t { debug, info, warning, critical, fatal, none }; enum severity_t { debug, info, warning, critical, fatal, none };
#endif
enum category_t enum category_t
{ {
@ -95,6 +97,7 @@ namespace libtorrent {
// a timestamp is automatically created in the constructor // a timestamp is automatically created in the constructor
ptime timestamp() const; ptime timestamp() const;
virtual int type() const = 0;
virtual char const* what() const = 0; virtual char const* what() const = 0;
virtual std::string message() const = 0; virtual std::string message() const = 0;
virtual int category() const = 0; virtual int category() const = 0;
@ -158,6 +161,8 @@ namespace libtorrent {
unhandled_alert() {} unhandled_alert() {}
}; };
#ifndef BOOST_NO_TYPEID
namespace detail { namespace detail {
struct void_; struct void_;
@ -206,6 +211,9 @@ namespace libtorrent {
} }
}; };
#endif // BOOST_NO_TYPEID
} // namespace libtorrent } // namespace libtorrent
#endif // TORRENT_ALERT_HPP_INCLUDED #endif // TORRENT_ALERT_HPP_INCLUDED

547
include/libtorrent/alert_types.hpp
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