// rpc client endpoint.
// manages a xid space per destination socket
// threaded: multiple threads can be sending RPCs,
-class rpcc : public connection_delegate {
+class rpcc : private connection_delegate {
private:
- //manages per rpc info
+ // manages per rpc info
struct caller {
caller(int _xid, string *_rep) : xid(_xid), rep(_rep) {}
int call1(proc_t proc, marshall &req, string &rep, milliseconds to);
template<class R>
- int call_m(proc_t proc, marshall &req, R & r, milliseconds to);
+ int call_m(proc_t proc, marshall &req, R & r, milliseconds to) {
+ string rep;
+ int intret = call1(proc, req, rep, to);
+ unmarshall u(rep, true);
+ if (intret < 0) return intret;
+ u >> r;
+ if (u.okdone() != true) {
+ cerr << "rpcc::call_m: failed to unmarshall the reply. You are probably " <<
+ "calling RPC 0x" << hex << proc << " with the wrong return type." << endl;
+ VERIFY(0);
+ return rpc_const::unmarshal_reply_failure;
+ }
+ return intret;
+ }
+
+ bool got_pdu(const shared_ptr<connection> & c, const string & b);
+
public:
rpcc(const string & d, bool retrans=true);
void cancel();
- bool got_pdu(const shared_ptr<connection> & c, const string & b);
-
template<class R, typename ...Args>
- inline int call(proc_t proc, R & r, const Args&... args);
+ inline int call(proc_t proc, R & r, const Args&... args) {
+ return call_timeout(proc, rpc::to_max, r, args...);
+ }
template<class R, typename ...Args>
- inline int call_timeout(proc_t proc, milliseconds to, R & r, const Args&... args);
+ inline int call_timeout(proc_t proc, milliseconds to, R & r, const Args&... args) {
+ marshall m{args...};
+ return call_m(proc, m, r, to);
+ }
};
-template<class R> int
-rpcc::call_m(proc_t proc, marshall &req, R & r, milliseconds to)
-{
- string rep;
- int intret = call1(proc, req, rep, to);
- unmarshall u(rep, true);
- if (intret < 0) return intret;
- u >> r;
- if (u.okdone() != true) {
- cerr << "rpcc::call_m: failed to unmarshall the reply. You are probably " <<
- "calling RPC 0x" << hex << proc << " with the wrong return type." << endl;
- VERIFY(0);
- return rpc_const::unmarshal_reply_failure;
- }
- return intret;
-}
-
-template<class R, typename... Args> inline int
-rpcc::call(proc_t proc, R & r, const Args&... args)
-{
- return call_timeout(proc, rpc::to_max, r, args...);
-}
-
-template<class R, typename... Args> inline int
-rpcc::call_timeout(proc_t proc, const milliseconds to, R & r, const Args&... args)
-{
- marshall m{args...};
- return call_m(proc, m, r, to);
-}
-
// rpc server endpoint.
-class rpcs : public connection_delegate {
-
- typedef enum {
- NEW, // new RPC, not a duplicate
- INPROGRESS, // duplicate of an RPC we're still processing
- DONE, // duplicate of an RPC we already replied to (have reply)
- FORGOTTEN, // duplicate of an old RPC whose reply we've forgotten
- } rpcstate_t;
-
+class rpcs : private connection_delegate {
private:
+ typedef enum {
+ NEW, // new RPC, not a duplicate
+ INPROGRESS, // duplicate of an RPC we're still processing
+ DONE, // duplicate of an RPC we already replied to (have reply)
+ FORGOTTEN, // duplicate of an old RPC whose reply we've forgotten
+ } rpcstate_t;
+
// state about an in-progress or completed RPC, for at-most-once.
// if cb_present is true, then the RPC is complete and a reply
// has been sent; in that case buf points to a copy of the reply,
// and sz holds the size of the reply.
- struct reply_t {
- reply_t (int _xid) : xid(_xid), cb_present(false) {}
- reply_t (int _xid, const string & _buf) : xid(_xid), cb_present(true), buf(_buf) {}
- int xid;
- bool cb_present; // whether the reply buffer is valid
- string buf; // the reply buffer
- };
-
- in_port_t port_;
- unsigned int nonce_;
-
- // provide at most once semantics by maintaining a window of replies
- // per client that that client hasn't acknowledged receiving yet.
+ struct reply_t {
+ reply_t (int _xid) : xid(_xid), cb_present(false) {}
+ reply_t (int _xid, const string & _buf) : xid(_xid), cb_present(true), buf(_buf) {}
+ int xid;
+ bool cb_present; // whether the reply buffer is valid
+ string buf; // the reply buffer
+ };
+
+ in_port_t port_;
+ unsigned int nonce_;
+
+ // provide at most once semantics by maintaining a window of replies
+ // per client that that client hasn't acknowledged receiving yet.
// indexed by client nonce.
- map<unsigned int, list<reply_t> > reply_window_;
+ map<unsigned int, list<reply_t>> reply_window_;
- void free_reply_window(void);
- void add_reply(unsigned int clt_nonce, int xid, const string & b);
+ void free_reply_window(void);
+ void add_reply(unsigned int clt_nonce, int xid, const string & b);
- rpcstate_t checkduplicate_and_update(unsigned int clt_nonce,
- int xid, int rep_xid, string & b);
+ rpcstate_t checkduplicate_and_update(unsigned int clt_nonce,
+ int xid, int rep_xid, string & b);
- void updatestat(proc_t proc);
+ void updatestat(proc_t proc);
- // latest connection to the client
- map<unsigned int, shared_ptr<connection>> conns_;
+ // latest connection to the client
+ map<unsigned int, shared_ptr<connection>> conns_;
- // counting
- const size_t counting_;
- size_t curr_counts_;
- map<proc_t, size_t> counts_;
+ // counting
+ const size_t counting_;
+ size_t curr_counts_;
+ map<proc_t, size_t> counts_;
- bool reachable_;
+ bool reachable_;
- // map proc # to function
- map<proc_t, handler *> procs_;
+ // map proc # to function
+ map<proc_t, handler *> procs_;
- mutex procs_m_; // protect insert/delete to procs[]
- mutex count_m_; //protect modification of counts
- mutex reply_window_m_; // protect reply window et al
- mutex conns_m_; // protect conns_
+ mutex procs_m_; // protect insert/delete to procs[]
+ mutex count_m_; // protect modification of counts
+ mutex reply_window_m_; // protect reply window et al
+ mutex conns_m_; // protect conns_
+ void dispatch(shared_ptr<connection> c, const string & buf);
- protected:
+ // internal handler registration
+ void reg1(proc_t proc, handler *);
- void dispatch(shared_ptr<connection> c, const string & buf);
+ unique_ptr<thread_pool> dispatchpool_;
+ unique_ptr<tcpsconn> listener_;
- // internal handler registration
- void reg1(proc_t proc, handler *);
+ // RPC handler for clients binding
+ int rpcbind(unsigned int &r, int a);
- unique_ptr<thread_pool> dispatchpool_;
- unique_ptr<tcpsconn> listener_;
+ bool got_pdu(const shared_ptr<connection> & c, const string & b);
public:
- rpcs(in_port_t port, size_t counts=0);
- ~rpcs();
- inline in_port_t port() { return listener_->port(); }
- //RPC handler for clients binding
- int rpcbind(unsigned int &r, int a);
- void set_reachable(bool r) { reachable_ = r; }
+ rpcs(in_port_t port, size_t counts=0);
+ ~rpcs();
- bool got_pdu(const shared_ptr<connection> & c, const string & b);
+ void set_reachable(bool r) { reachable_ = r; }
- struct ReturnOnFailure {
- static inline int unmarshall_args_failure() {
- return rpc_const::unmarshal_args_failure;
+ template<class F, class C=void> void reg(proc_t proc, F f, C *c=nullptr) {
+ struct ReturnOnFailure {
+ static inline int unmarshall_args_failure() {
+ return rpc_const::unmarshal_args_failure;
+ }
+ };
+ reg1(proc, marshalled_func<F, ReturnOnFailure>::wrap(f, c));
}
- };
-
- template<class F, class C=void> void reg(proc_t proc, F f, C *c=nullptr) {
- reg1(proc, marshalled_func<F, ReturnOnFailure>::wrap(f, c));
- }
- void start();
+ void start();
};
#endif
projects / invirt/third/libt4.git / blobdiff