Hypertable::RequestCache Class Reference

Class used to hold pending request callback handlers. More...

#include <RequestCache.h>

Collaboration diagram for Hypertable::RequestCache:

Classes
class	CacheNode
	Internal cache node structure. More...

Public Member Functions
	RequestCache ()
	Constructor. More...
void	insert (uint32_t id, IOHandler *handler, DispatchHandler *dh, ClockT::time_point &expire)
	Inserts pending request callback handler into cache. More...
bool	remove (uint32_t id, DispatchHandler *&handler)
	Removes a request from the cache. More...
bool	get_next_timeout (ClockT::time_point &now, IOHandler *&handlerp, DispatchHandler *&dh, ClockT::time_point *next_timeout)
	Removes next request that has timed out. More...
void	purge_requests (IOHandler *handler, int32_t error)
	Purges all requests assocated with handler. More...

Private Types
typedef std::unordered_map < uint32_t, CacheNode * >	IdHandlerMap
	RequestID-to-CacheNode map. More...

Private Attributes
IdHandlerMap	m_id_map
	RequestID-to-CacheNode map. More...
CacheNode *	m_head
	Head of doubly-linked list. More...
CacheNode *	m_tail {}
	Tail of doubly-linked list. More...

Detailed Description

Class used to hold pending request callback handlers.

One RequestCache object is associated with each Reactor. When a request is sent (see Comm::send_request) an entry, which includes the response handler, is inserted into the RequestCache. When the corresponding response is receive, the response handler is obtained by looking up the corresponding request ID in this cache.

Definition at line 50 of file RequestCache.h.

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The documentation for this class was generated from the following files:

• /home/doug/src/hypertable/src/cc/AsyncComm/RequestCache.h
• /home/doug/src/hypertable/src/cc/AsyncComm/RequestCache.cc