test of ca sync group

ca_sg_test.cpp

#include "cadef.h"

int main(int argc, char **argv)
{
    CA_SYNC_GID gid;
    chanId chid;
    double value;
    int status;

    // preemptive disabled, no hang up
    // status = ca_context_create(ca_disable_preemptive_callback);
    // preemptive enabled, hang up
    status = ca_context_create(ca_enable_preemptive_callback);
    SEVCHK(status, "create context");

    status = ca_create_channel("catest", NULL, NULL, 0, &chid);
    status = ca_pend_io(2);
    SEVCHK(status, "create channel");

    status = ca_sg_create(&gid);
    SEVCHK(status, "create sync group");

    status = ca_sg_array_get(gid, DBR_DOUBLE, 1, chid, &value);
    SEVCHK(status, "sync group get");

    while (ca_sg_test(gid) != ECA_IODONE)
        ca_sg_block(gid, 0.01);
}

test.db

record(ao,"catest")
{
}