Breakdown the size of the pmix_value_t structure as part of the PMIx ABI investigation

value.c

/*
 * Josh Hursey (IBM)
 * Breakdown the size of the pmix_value_t structure as part of the PMIx ABI
 * investigation.
 */
#include <stdio.h>
#include <pmix.h>

#define XLIST(xmacro) \
    xmacro("flag", flag) \
    xmacro("byte", byte) \
    xmacro("string", string) \
    xmacro("size", size) \
    xmacro("pid", pid) \
    xmacro("integer", integer) \
    xmacro("int8", int8) \
    xmacro("int16", int16) \
    xmacro("int32", int32) \
    xmacro("int64", int64) \
    xmacro("uint", uint) \
    xmacro("uint8", uint8) \
    xmacro("uint16", uint16) \
    xmacro("uint32", uint32) \
    xmacro("uint64", uint64) \
    xmacro("fval", fval) \
    xmacro("dval", dval) \
    xmacro("tv", tv) \
    xmacro("time", time) \
    xmacro("status", status) \
    xmacro("rank", rank) \
    xmacro("nspace", nspace) \
    xmacro("proc", proc) \
    xmacro("bo", bo) \
    xmacro("persist", persist) \
    xmacro("scope", scope) \
    xmacro("range", range) \
    xmacro("state", state) \
    xmacro("pinfo", pinfo) \
    xmacro("darray", darray) \
    xmacro("ptr", ptr) \
    xmacro("adir", adir) \
    xmacro("envar", envar) \
    xmacro("coord", coord) \
    xmacro("linkstate", linkstate) \
    xmacro("jstate", jstate) \
    xmacro("topo", topo) \
    xmacro("cpuset", cpuset) \
    xmacro("locality", locality) \
    xmacro("geometry", geometry) \
    xmacro("devtype", devtype) \
    xmacro("devdist", devdist) \
    xmacro("endpoint", endpoint) \
    xmacro("dbuf", dbuf) \
    xmacro("pstats", pstats) \
    xmacro("dkstats", dkstats) \
    xmacro("netstats", netstats) \
    xmacro("ndstats", ndstats)

int main() {
    pmix_value_t v;
    pmix_envar_t e;
    int i;

    printf("pmix_value_t : %2zu\n", sizeof(pmix_value_t));
    printf("-------------:-------\n");
    printf("pmix_value_t : %2zu type\n", sizeof(v.type));
    printf("pmix_value_t : %2zu data\n", sizeof(v.data));
    printf("-------------:-------\n");
#define xmacro(name, field)         printf("pmix_value_t : %2zu (.%s)\n", sizeof(v.data. field), name);
    XLIST(xmacro);
#undef xmacro
    printf("-------------:-------\n");
    printf("pmix_envar_t : %2zu\n", sizeof(pmix_envar_t));
    printf("-------------:-------\n");
    printf("pmix_envar_t : %2zu (.envar)\n", sizeof(e.envar));
    printf("pmix_envar_t : %2zu (.value)\n", sizeof(e.value));
    printf("pmix_envar_t : %2zu (.separator)\n", sizeof(e.separator));
    return 0;
}