1 // vim: ts=4 sw=4 noet:
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4 Copyright (c) 2018-2019 AT&T Intellectual Property.
6 Licensed under the Apache License, Version 2.0 (the "License");
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10 http://www.apache.org/licenses/LICENSE-2.0
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14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 See the License for the specific language governing permissions and
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22 Abstract: Very simple test sender. Sends messages with a given delay between each.
23 The sender also uses epoll_wait() to ensure that any received messages
26 Parms: The following positional parameters are recognised on the command line:
27 [listen_port [delay [stats-freq] [msg-type]]]]
31 delay (mu-sec) 1000000 (1 sec)
43 #include <sys/epoll.h>
50 We exit on any trapped signal so that we can kill -15 the proecss
51 and still get gcoverage information to keep sonar happy.
53 static void sigh( int sig ) {
54 fprintf( stderr, "\n[<SNDR> exiting on signal %d\n", sig );
58 int main( int argc, char** argv ) {
59 void* mrc; //msg router context
60 struct epoll_event events[1]; // list of events to give to epoll
61 struct epoll_event epe; // event definition for event to listen to
62 int ep_fd = -1; // epoll's file des (given to epoll_wait)
63 int rcv_fd; // file des that NNG tickles -- give this to epoll to listen on
64 int nready; // number of events ready for receive
65 rmr_mbuf_t* sbuf; // send buffer
66 rmr_mbuf_t* rbuf; // received buffer
69 char* listen_port = "43086";
70 int delay = 1000000; // mu-sec delay between messages
74 signal( SIGINT, sigh );
75 signal( SIGTERM, sigh );
78 listen_port = argv[1];
81 delay = atoi( argv[2] );
84 mtype = atoi( argv[3] );
87 fprintf( stderr, "<DEMO> listen port: %s; mtype: %d; delay: %d\n", listen_port, mtype, delay );
89 if( (mrc = rmr_init( listen_port, 1400, RMRFL_NONE )) == NULL ) {
90 fprintf( stderr, "<DEMO> unable to initialise RMr\n" );
94 rcv_fd = rmr_get_rcvfd( mrc ); // set up epoll things, start by getting the FD from MRr
96 fprintf( stderr, "<DEMO> unable to set up polling fd\n" );
99 if( (ep_fd = epoll_create1( 0 )) < 0 ) {
100 fprintf( stderr, "[FAIL] unable to create epoll fd: %d\n", errno );
103 epe.events = EPOLLIN;
104 epe.data.fd = rcv_fd;
106 if( epoll_ctl( ep_fd, EPOLL_CTL_ADD, rcv_fd, &epe ) != 0 ) {
107 fprintf( stderr, "[FAIL] epoll_ctl status not 0 : %s\n", strerror( errno ) );
111 sbuf = rmr_alloc_msg( mrc, 256 ); // alloc first send buffer; subsequent buffers allcoated on send
112 rbuf = NULL; // don't need to alloc receive buffer
114 while( ! rmr_ready( mrc ) ) { // must have a route table before we can send; wait til RMr say it has one
117 fprintf( stderr, "<DEMO> rmr is ready\n" );
120 while( 1 ) { // send messages until the cows come home
121 snprintf( sbuf->payload, 200, "count=%d received= %d ts=%lld %d stand up and cheer!\n", // create the payload
122 count, rcvd_count, (long long) time( NULL ), rand() );
124 sbuf->mtype = mtype; // fill in the message bits
125 sbuf->len = strlen( sbuf->payload ) + 1; // our receiver likely wants a nice acsii-z string
127 sbuf = rmr_send_msg( mrc, sbuf ); // send it (send returns an empty payload on success, or the original payload on fail/retry)
128 while( sbuf->state == RMR_ERR_RETRY ) { // soft failure (device busy?) retry
129 sbuf = rmr_send_msg( mrc, sbuf ); // retry send until it's good (simple test; real programmes should do better)
132 fprintf( stderr, "<SNDR> sent message type=%d\n", mtype );
136 if( mtype > 8 ) { // ensure we send a mt that doesn't have a fifo reader to ensure we don't block