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// XDR record stream ... test encode performance against CDR, using
// normal kinds of inlining performance hacks
//
// XXX as of 3-Nov-95 XDR_stream should only be relied on to marshal the
// simplest primitives ... not objrefs, typecodes, etc. Also, the
// handling of sequences of chars/octets/shorts/wchars is wrong.
//
// It's suitable only for a simple performance test just now ...
//
#include <string.h>
#include <unistd.h>
#include <widec.h>
#include <sys/types.h>
#include <sys/time.h>
#include <corba/orb.hh>
#include "runtime/cdr.hh"
#include "runtime/debug.hh"
#include "onc/xdr.hh"
// A structure that's somewhat representative of an IIOP message
// in terms of overall complexity, so that its encoding cost is
// "interesting"
typedef CORBA_SEQUENCE <CORBA_Octet> opaque;
struct interesting {
// A call that's mostly going to be "on the mark" for IIOP-ish
// messages with small numbers of parameters:
// 4 chars magic
// 2 bytes version
// 1 byte byte-order
// 1 byte message type ---> 8 bytes "pure header"
CORBA_Char hdr_bytes [8];
// 1 word message size --=> end of GIOP::MessageHeader
CORBA_ULong hdr_len;
// Service Context (1 word min)
CORBA_ULong empty_ctx;
// 1 word request id
CORBA_ULong request_id;
// 1 byte response-expected flag
CORBA_Boolean response_expected;
// [ CDR: 3 bytes padding ]
// opaque object key (1 word min; typically less than 16 bytes)
opaque object_key;
// string operation name (non-empty ... often less than 10 bytes)
CORBA_String opname;
// Principal client (1 word min)
opaque client_id;
// --=> END OF GIOP::RequestHeader
// ... small number of parameters with any significance
// 2 word parameters
CORBA_ULong param1;
CORBA_ULong param2;
// 1 string parameter
CORBA_String param3;
};
// XXX declare CDR typecode for above type ... initialize and use
// one instance in the test below
extern CORBA_TypeCode TC_opaque;
static void
do_test (
int use_XDR,
CORBA_TypeCode_ptr tc,
void *data
)
{
unsigned loopcount = 100 * 1000;
unsigned i;
unsigned error_count = 0;
timeval before, after;
CORBA_String opname = "kill_husband";
opaque key;
CORBA_Boolean status;
key.buffer = (CORBA_Octet *) "jacqueline";
key.length = key.maximum = 10;
if (gettimeofday (&before, 0) < 0)
dperror ("gettimeofday before");
if (use_XDR) {
// Using XDR APIs and encoding rules ...
// encode the structure repeatedly
for (i = 0; i < loopcount; i++) {
CORBA_Environment env;
XDR_stream stream (-1);
// GIOP header plus most of request header
status = status
&& stream.put_long ('GIOP') // magic
&& stream.put_long ('\01\01\01\01') // version etc
&& stream.put_long (99) // msg len
&& stream.put_long (0) // no svc ctx
&& stream.put_long (42) // request ID
&& stream.put_boolean (CORBA_B_TRUE)// response?
;
if (status)
status = XDR_stream::encoder (&TC_opaque, &key, 0, &stream, env)
== CORBA_TypeCode::TRAVERSE_CONTINUE;
if (status)
status = XDR_stream::encoder (_tc_CORBA_String, &opname,
0, &stream, env)
== CORBA_TypeCode::TRAVERSE_CONTINUE;
/*
if (status)
status = XDR_stream::encoder (_tc_CORBA_Principal, &key,
0, &stream, env)
== CORBA_TypeCode::TRAVERSE_CONTINUE;
*/
// Parameters: two longs, a string
status = status
&& stream.put_long (99)
&& stream.put_long (-3455);
if (status)
status = XDR_stream::encoder (_tc_CORBA_String, &opname,
0, &stream, env)
== CORBA_TypeCode::TRAVERSE_CONTINUE;
// Gratuitous extra "interesting" data
status = XDR_stream::encoder (tc, data, 0, &stream, env)
== CORBA_TypeCode::TRAVERSE_CONTINUE;
if (status != CORBA_B_TRUE)
error_count++;
}
} else {
// This branch is the same, but using CDR APIs and encoding ...
// encode the structure repeatedly
for (i = 0; i < loopcount; i++) {
CORBA_Environment env;
unsigned char buffer [CDR::DEFAULT_BUFSIZE];
CDR stream (buffer, sizeof buffer);
// GIOP header plus most of request header
status = status
&& stream.put_long ('GIOP') // magic
&& stream.put_long ('\01\01\01\01') // version etc
&& stream.put_long (99) // msg len
&& stream.put_long (0) // no svc ctx
&& stream.put_long (42) // request ID
&& stream.put_boolean (CORBA_B_TRUE)// response?
;
if (status)
status = CDR::encoder (&TC_opaque, &key, 0, &stream, env)
== CORBA_TypeCode::TRAVERSE_CONTINUE;
if (status)
status = CDR::encoder (_tc_CORBA_String, &opname,
0, &stream, env)
== CORBA_TypeCode::TRAVERSE_CONTINUE;
/*
if (status)
status = CDR::encoder (_tc_CORBA_Principal, &key,
0, &stream, env)
== CORBA_TypeCode::TRAVERSE_CONTINUE;
*/
// Parameters: two longs, a string
status = status
&& stream.put_long (99)
&& stream.put_long (-3455);
if (status)
status = CDR::encoder (_tc_CORBA_String, &opname,
0, &stream, env)
== CORBA_TypeCode::TRAVERSE_CONTINUE;
// Gratuitous extra "interesting" data
status = CDR::encoder (tc, data, 0, &stream, env)
== CORBA_TypeCode::TRAVERSE_CONTINUE;
if (status != CORBA_B_TRUE)
error_count++;
}
}
if (gettimeofday (&after, 0) < 0)
dperror ("gettimeofday after");
if (loopcount > 0) {
if (error_count == 0) {
unsigned long us;
us = after.tv_sec - before.tv_sec;
us *= 1000 * 1000;
us += after.tv_usec - before.tv_usec;
us /= loopcount;
printf ("%s average encode time\t= %ld.%.03ldms, \t"
"%ld calls/second\n",
use_XDR ? "XDR" : "CDR",
us / 1000, us % 1000,
1000000L / us);
}
printf ("%d calls, %d errors\n", loopcount, error_count);
}
}
int
main (
int argc,
char **argv
)
{
int c;
int use_XDR = 1;
CORBA_TypeCode_ptr tc = _tc_CORBA_TypeCode;
void *data = tc;
while ((c = getopt (argc, argv, "cx")) != EOF) {
switch (c) {
case 'c':
use_XDR = 0;
continue;
case 'x':
use_XDR = 1;
continue;
case '?':
default:
// usage:
fprintf (stderr, "usage: %s"
, " [-cx]"
, "\n"
, argv [0]
);
}
}
do_test (1, tc, data); // XDR-ish
do_test (0, tc, data); // CDR
return 0;
}
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