Synergy User Manual and Tutorial. - THE CORE MEMORY

Synergy User Manual and Tutorial
Sending and Receiving Data
Hello Workers!—Hello Master!!!
In this example application, the master (tupleHello2Master.c) sends the message “Hello
Workers!” to all workers (tupleHello2Worker.c) and gets the response “Hello Master!!!”
and the worker’s name from each worker. The source code, makefile and csl file for this
application is located in the example02 directory.
The following is the tuple space “Hello Workers!—Hello Master!!!” master program:
#include
#include
main() {
int tplength;
int status;
int P;
int i;
int res;
int tsd;
char host[128];
char tpname[20];
char recdMsg[50];
// Length of ts entry
// Return status for tuple operations
// Number of processors
// Counter index
// Result tuple space identifier
// Problem tuple space identifier
// Host machine name
// Identifier of ts entry
// Message received from workers
// Message sent to workers
char sendMsg[50] = "Hello Workers!\0";
// Get host machine name
gethostname(host, sizeof(host));
// Open tuple spaces
printf("Master: Opening tuple spaces\n");
// Open problem tuple space
tsd = cnf_open("problem",0);
// Open result tuple space
res = cnf_open("result",0);
printf("Master: Tuple spaces open complete\n");
// Get number of processors
P = cnf_getP();
printf("Master: Processors %d\n", P);
// Send 'Hello Synergy!' to problem tuple space
// Set length of send entry
tplength = sizeof(sendMsg);
// Set name of entry to host
strcpy(tpname, host);
printf("Master: Putting '%s' Length %d Name %s\n",
sendMsg, tplength, tpname);
// Put entry in tuple space
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