File: [local] / OpenXM / src / ox_math / Attic / serv2.c (download)
Revision 1.14, Fri Mar 10 12:38:47 2000 UTC (24 years, 6 months ago) by ohara
Branch: MAIN
Changes since 1.13: +8 -9
lines
Mathematica client/server has been compliant to new ox_toolkit header files.
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/* -*- mode: C; coding: euc-japan -*- */
/* $OpenXM: OpenXM/src/ox_math/serv2.c,v 1.14 2000/03/10 12:38:47 ohara Exp $ */
/*
Copyright (C) Katsuyoshi OHARA, 2000.
Portions copyright 1999 Wolfram Research, Inc.
You must see OpenXM/Copyright/Copyright.generic.
The MathLink Library is licensed from Wolfram Research Inc..
See OpenXM/Copyright/Copyright.mathlink for detail.
*/
/*
Remarks:
file descripter 3 and 4 are already opened by the parent process.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <gmp.h>
#include <mathlink.h>
#include <ox_toolkit.h>
#include "serv2.h"
extern int flag_mlo_symbol;
/* MathLink independent */
#define INIT_S_SIZE 2048
#define EXT_S_SIZE 2048
static int stack_size = 0;
static int stack_pointer = 0;
static cmo **stack = NULL;
int initialize_stack()
{
stack_pointer = 0;
stack_size = INIT_S_SIZE;
stack = malloc(stack_size*sizeof(cmo*));
}
static int extend_stack()
{
int size2 = stack_size + EXT_S_SIZE;
cmo **stack2 = malloc(size2*sizeof(cmo*));
memcpy(stack2, stack, stack_size*sizeof(cmo *));
free(stack);
stack = stack2;
stack_size = size2;
}
int push(cmo* m)
{
#if DEBUG
symbol_t symp;
if (m->tag == CMO_STRING) {
fprintf(stderr, "ox_math:: a CMO_STRING(%s) was pushed.\n", ((cmo_string *)m)->s);
}else {
symp = lookup_by_tag(m->tag);
fprintf(stderr, "ox_math:: a %s was pushed.\n", symbol_get_key(symp));
}
#endif
stack[stack_pointer] = m;
stack_pointer++;
if (stack_pointer >= stack_size) {
extend_stack();
}
}
/* if the stack is empty, then pop() returns (CMO_NULL). */
cmo* pop()
{
if (stack_pointer > 0) {
stack_pointer--;
return stack[stack_pointer];
}
return new_cmo_null();
}
void pops(int n)
{
stack_pointer -= n;
if (stack_pointer < 0) {
stack_pointer = 0;
}
}
/*
if error occurs, then a sm_*() function returns non-zero and
an error obect is set by a function which calls sm_*().
*/
int sm_popCMO(int fd_write)
{
cmo* m = pop();
#ifdef DEBUG
symbol *symp = lookup_by_tag(m->tag);
fprintf(stderr, "ox_math:: opecode = SM_popCMO. (%s)\n", symbol_get_key(symp));
#endif
if (m != NULL) {
send_ox_cmo(fd_write, m);
return 0;
}
return SM_popCMO;
}
int sm_pops(int fd_write)
{
cmo* m = pop();
if (m != NULL && m->tag == CMO_INT32) {
pops(((cmo_int32 *)m)->i);
return 0;
}
return ERROR_ID_UNKNOWN_SM;
}
/* MathLink dependent */
int sm_popString(int fd_write)
{
char *s;
cmo *err;
cmo *m;
#ifdef DEBUG
fprintf(stderr, "ox_math:: opecode = SM_popString.\n");
#endif
m = pop();
if (m->tag == CMO_STRING) {
send_ox_cmo(fd_write, m);
}else if ((s = new_string_set_cmo(m)) != NULL) {
send_ox_cmo(fd_write, (cmo *)new_cmo_string(s));
}else {
err = make_error_object(SM_popString, m);
send_ox_cmo(fd_write, err);
}
return 0;
}
int local_execute(char *s)
{
if(*s == 'i') {
switch(s[1]) {
case '+':
flag_mlo_symbol = FLAG_MLTKSYM_IS_STRING;
break;
case '-':
case '=':
default:
flag_mlo_symbol = FLAG_MLTKSYM_IS_INDETERMINATE;
}
}
return 0;
}
/* The following function is depend on an implementation of a server. */
int sm_executeStringByLocalParser(int fd_write)
{
symbol *symp;
cmo* m = pop();
char *s = NULL;
#ifdef DEBUG
fprintf(stderr, "ox_math:: opecode = SM_executeStringByLocalParser.\n");
#endif
if (m->tag == CMO_STRING
&& strlen(s = ((cmo_string *)m)->s) != 0) {
if (s[0] == ':') {
local_execute(++s);
}else {
/* for mathematica */
/* Sending the string `s' to mathematica for its evaluation. */
ml_evaluateStringByLocalParser(s);
ml_select();
push(receive_mlo());
}
return 0;
}
#ifdef DEBUG
symp = lookup_by_tag(m->tag);
fprintf(stderr, "ox_math:: error. the top of stack is %s.\n", symbol_get_key(symp));
#endif
return SM_executeStringByLocalParser;
}
int sm_executeFunction(int fd_write)
{
int i, argc;
cmo **argv;
char* func;
cmo* m;
if ((m = pop()) == NULL || m->tag != CMO_STRING) {
return SM_executeFunction;
}
func = ((cmo_string *)m)->s;
if ((m = pop()) == NULL || m->tag != CMO_INT32) {
return SM_executeFunction;
}
argc = ((cmo_int32 *)m)->i;
argv = malloc(argc*sizeof(cmo *));
for (i=0; i<argc; i++) {
argv[i] = pop();
}
ml_executeFunction(func, argc, argv);
ml_select();
push(receive_mlo());
return 0;
}
#define VERSION 0x11121400
#define ID_STRING "ox_math server 1999/12/14 15:25:00"
int sm_mathcap(int fd_write)
{
push(make_mathcap_object(VERSION, ID_STRING));
return 0;
}
int receive_sm_command(int fd_read)
{
return receive_int32(fd_read);
}
int execute_sm_command(int fd_write, int code)
{
int err = 0;
#ifdef DEBUG
symbol_t sp = lookup_by_tag(code);
fprintf(stderr, "ox_math:: %s received.\n", symbol_get_key(sp));
#endif
switch(code) {
case SM_popCMO:
err = sm_popCMO(fd_write);
break;
case SM_popString:
err = sm_popString(fd_write);
break;
case SM_mathcap:
err = sm_mathcap(fd_write);
break;
case SM_pops:
err = sm_pops(fd_write);
break;
case SM_executeStringByLocalParser:
case SM_executeStringByLocalParserInBatchMode:
err = sm_executeStringByLocalParser(fd_write);
break;
case SM_executeFunction:
err = sm_executeFunction(fd_write);
break;
case SM_shutdown:
shutdown();
break;
case SM_setMathCap:
pop(); /* ignore */
break;
default:
fprintf(stderr, "unknown command: %d.\n", code);
err = ERROR_ID_UNKNOWN_SM;
}
if (err != 0) {
push((cmo *)make_error_object(err, new_cmo_null()));
}
}