File: [local] / OpenXM / src / ox_ntl / oxserv.c (download)
Revision 1.4, Mon Nov 17 09:55:52 2003 UTC (20 years, 10 months ago) by iwane
Branch: MAIN
Changes since 1.3: +35 -19
lines
block interrupt input (remove sigprocmask)
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/* $OpenXM: OpenXM/src/ox_ntl/oxserv.c,v 1.4 2003/11/17 09:55:52 iwane Exp $ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <setjmp.h>
#include "oxserv.h"
#include "oxstack.h"
#include "gc/gc.h"
#define DPRINTF(x) printf x; fflush(stdout)
#define FP stdout
#define EPRINTF(x) fprintf x; fflush(FP)
#if 1
/*===========================================================================*
* for DEBUG
*===========================================================================*/
#include <stdarg.h>
void
dprintf(const char *fmt, ...)
{
FILE *fp;
va_list ap;
va_start(ap, fmt);
fp = fopen("error.txt", "a");
vfprintf(fp, fmt, ap);
fflush(fp);
fclose(fp);
va_end(ap);
}
#endif
/*===========================================================================*
* MACRO
*===========================================================================*/
#define oxserv_get_cmo_tag(m) ((G_getCmoTag == NULL) ? m->tag : G_getCmoTag(m))
#define oxserv_delete_cmo(c) \
do { \
if (c != NULL) { \
if (G_DeleteCmo != NULL) \
G_DeleteCmo(c); \
else \
c = NULL; \
} \
} while (0)
/*===========================================================================*
* Global Variables.
*===========================================================================*/
/* ox */
static OXFILE *G_oxfilep = NULL;
static cmo_mathcap *G_oxserv_mathcap = NULL;
/* signal */
int G_oxserv_sigusr1flag = 0;
int G_oxserv_sigusr1cnt = 0;
static jmp_buf G_jmpbuf;
/* User Function */
static void (*G_userExecuteFunction)(const char *, cmo **, int) = NULL;
static void (*G_userExecuteStringParser)(const char *) = NULL;
static cmo *(*G_convertCmo)(cmo *) = NULL; /* convert user object ==> cmo */
static void (*G_DeleteCmo)(cmo *) = NULL;
static int (*G_getCmoTag)(cmo *) = NULL;
/*===========================================================================*
* CMO_ERROR2
*===========================================================================*/
#define new_cmo_error2_string(msg) new_cmo_error2((cmo *)new_cmo_string(msg))
static void
oxserv_push_errormes(char *msg)
{
EPRINTF((FP, "%s\n", msg));
oxstack_push((cmo *)new_cmo_error2_string(msg));
}
/*===========================================================================*
* synchronized malloc
*===========================================================================*/
void *
oxserv_malloc(size_t size)
{
void *ptr;
BLOCK_INPUT();
ptr = GC_malloc(size);
UNBLOCK_INPUT();
return (ptr);
}
void
oxserv_free(void *ptr, size_t size)
{
/* nothing */
}
void *
oxserv_realloc(void *org, size_t old, size_t size)
{
void *ptr;
BLOCK_INPUT();
ptr = GC_realloc(org, size);
UNBLOCK_INPUT();
return (ptr);
}
/*===========================================================================*
* OX_SERVER
*===========================================================================*/
/*****************************************************************************
* -- SM_popCMO --
* pop an object from the stack, convert it into a serialized from according
* to the standard CMO encoding scheme, and send it to the stream
*
* PARAM : fd : OXFILE
* RETURN: NONE
*****************************************************************************/
static void
oxserv_sm_popCMO(OXFILE *fd)
{
cmo *m, *n;
m = oxstack_pop();
if (m == NULL) {
EPRINTF((FP, "stack underflow in popCMO\n"));
m = new_cmo_null();
} else if (G_convertCmo) {
n = G_convertCmo(m);
if (m != n) {
oxserv_delete_cmo(m);
m = n;
}
}
send_ox_cmo(fd, m);
oxserv_delete_cmo(m);
}
/*****************************************************************************
* -- SM_popString --
* pop an cmo from stack, convert it into a string according to the
* output format of the local system, and send the string.
*
* PARAM : fd : OXFILE
* RETURN: NONE
*****************************************************************************/
static void
oxserv_sm_popString(OXFILE *fd)
{
char *str;
cmo *m = oxstack_pop();
cmo_string *m_str;
if (m == NULL) {
EPRINTF((FP, "stack underflow in popString\n"));
m = new_cmo_null();
}
str = new_string_set_cmo(m);
m_str = new_cmo_string(str);
send_ox_cmo(fd, (cmo *)m_str);
oxserv_delete_cmo(m);
oxserv_delete_cmo((cmo *)m_str);
/* free(str); */
}
/*****************************************************************************
* -- SM_pops --
* pop n and to discard element from the stack
*
* PARAM : NONE
* RETURN: NONE
*****************************************************************************/
static void
oxserv_sm_pops()
{
cmo_int32 *c;
cmo *m;
int n;
int i;
c = (cmo_int32 *)oxstack_pop(); /* suppose */
if (c == NULL) {
EPRINTF((FP, "stack underflow in pops\n"));
return ;
}
n = oxstack_get_stack_pointer();
if (c->i < n)
n = c->i;
for (i = 0; i < n; i++) {
m = oxstack_pop();
oxserv_delete_cmo(m);
}
oxserv_delete_cmo((cmo *)c);
}
/*****************************************************************************
* -- SM_getsp --
* push the current stack pointer onto the stack.
*
* PARAM : fd : OXFILE
* RETURN: NONE
*****************************************************************************/
static void
oxserv_sm_getsp()
{
cmo_int32 *m = new_cmo_int32(oxstack_get_stack_pointer());
oxstack_push((cmo *)m);
}
/*****************************************************************************
*
* PARAM : ver :
* : vstr :
* : sysname:
* : cmos :
* : sms :
* RETURN: NONE
* SEE : oxserv_set();
*****************************************************************************/
static void
oxserv_mathcap_init(int ver, char *vstr, char *sysname, int *cmos, int *sms)
{
int i;
int local_sms[] = {
SM_popCMO,
SM_mathcap,
SM_setMathCap,
SM_pops,
SM_getsp,
SM_popString,
SM_pushCMOtag,
0,
SM_executeFunction,
SM_dupErrors,
SM_executeStringByLocalParser,
SM_executeStringByLocalParserInBatchMode,
SM_shutdown,
0,
};
/* depend on ox_toolkit */
int local_cmos[] = {
CMO_ERROR2,
CMO_NULL,
CMO_INT32,
CMO_STRING,
CMO_MATHCAP,
CMO_LIST,
CMO_MONOMIAL32,
CMO_ZZ,
CMO_ZERO,
CMO_RECURSIVE_POLYNOMIAL,
CMO_DISTRIBUTED_POLYNOMIAL,
CMO_POLYNOMIAL_IN_ONE_VARIABLE,
CMO_DMS_GENERIC,
CMO_RING_BY_NAME,
CMO_INDETERMINATE,
CMO_TREE,
CMO_LAMBDA,
0,
CMO_QQ,
CMO_ATTRIBUTE_LIST,
CMO_DMS,
CMO_DMS_OF_N_VARIABLES,
CMO_LIST_R,
CMO_INT32COEFF,
CMO_RATIONAL,
CMO_DATUM,
0,
};
if (sms == NULL) {
sms = local_sms;
for (i = 0; sms[i] != 0; i++)
;
if (G_userExecuteFunction != NULL)
sms[i++] = SM_executeFunction;
if (G_userExecuteStringParser != NULL) {
sms[i++] = SM_executeStringByLocalParser;
sms[i++] = SM_executeStringByLocalParserInBatchMode;
}
sms[i] = 0;
}
if (cmos == NULL)
cmos = local_cmos;
mathcap_init(ver, vstr, sysname, cmos, sms);
oxserv_delete_cmo((cmo *)G_oxserv_mathcap);
G_oxserv_mathcap = mathcap_get(new_mathcap());
}
/*****************************************************************************
* -- SM_mathcap --
* push the mathcap of the server.
*
* PARAM : NONE
* RETURN: NONE
*****************************************************************************/
static void
oxserv_sm_mathcap()
{
if (G_oxserv_mathcap == NULL) {
oxserv_mathcap_init(0, "", "oxserv", NULL, NULL);
}
oxstack_push((cmo *)G_oxserv_mathcap);
}
/*****************************************************************************
* -- SM_executeStringByLocalParserInBatchMode --
* peek a character string s, parse it by the local parser of the stack machine,
* and interpret by the local interpreter.
*
* PARAM : NONE
* RETURN: NONE
*****************************************************************************/
static void
oxserv_sm_executeStringByLocalParserInBatchMode(void)
{
cmo_string *str = (cmo_string *)oxstack_peek();
if (str == NULL) {
oxserv_push_errormes("stack underflow in executeStringByLocalParserInBatchMode");
return ;
}
G_userExecuteStringParser(str->s);
}
/*****************************************************************************
* -- SM_executeStringByLocalParser --
* pop a character string s, parse it by the local parser of the stack machine,
* and interpret by the local interpreter.
*
* PARAM : NONE
* RETURN: NONE
*****************************************************************************/
static void
oxserv_sm_executeStringByLocalParser(void)
{
cmo_string *str = (cmo_string *)oxstack_pop();
if (str == NULL) {
oxserv_push_errormes("stack underflow in executeStringByLocalParser");
return ;
}
G_userExecuteStringParser(str->s);
}
/*****************************************************************************
* -- SM_executeFunction --
* pop s as a function name, pop n as the number of arguments and to execute a
* local function s with n arguments poped from the stack.
*
* suppose G_userExecuteFunction not equal NULL
*
* PARAM : NONE
* RETURN: NONE
*****************************************************************************/
static void
oxserv_sm_executeFunction(void)
{
int i;
cmo_string *name = (cmo_string *)oxstack_pop();
cmo_int32 *cnt = (cmo_int32 *)oxstack_pop();
cmo **arg;
if (name == NULL || cnt == NULL) {
oxserv_push_errormes("stack underflow in executeFunction");
return ;
}
arg = (cmo **)malloc(cnt->i * sizeof(cmo *));
for (i = 0; i < cnt->i; i++) {
arg[i] = oxstack_pop();
if (arg[i] == NULL) {
oxserv_push_errormes("stack underflow in executeFunction");
for (i--; i >= 0; i--)
oxserv_delete_cmo(arg[i]);
free(arg);
return ;
}
}
/* user function */
G_userExecuteFunction(name->s, arg, cnt->i);
for (i = 0; i < cnt->i; i++) {
oxserv_delete_cmo(arg[i]);
}
oxserv_delete_cmo((cmo *)name);
oxserv_delete_cmo((cmo *)cnt);
free(arg);
}
/*****************************************************************************
* -- SM_pushCMOtag --
* push the CMO tag of the top object on the stack.
*
* PARAM : NONE
* RETURN: NONE
*****************************************************************************/
static void
oxserv_sm_pushCMOtag()
{
cmo *c = oxstack_peek();
cmo_int32 *tag = new_cmo_int32(oxserv_get_cmo_tag(c));
oxstack_push((cmo *)tag);
}
/*****************************************************************************
* -- SM_dupErrors --
*
* PARAM : NONE
* RETURN: NONE
*****************************************************************************/
static void
oxserv_sm_dupErrors()
{
cmo_list *list;
cmo *c;
int i;
list = new_cmo_list();
for (i = 0; i < oxstack_get_stack_pointer(); i++) {
c = oxstack_get(i);
if (c->tag == CMO_ERROR2) {
list_append(list, c);
}
}
oxstack_push((cmo *)list);
}
/*****************************************************************************
* -- SM_control_reset_connection -- signal handler for SIGUSR1 --
*
* PARAM : NONE
*
* : if (sig == 0) called UNBLOCK_INPUT()
* RETURN: NONE
*****************************************************************************/
void
oxserv_sm_control_reset_connection(int sig)
{
int tag;
OXFILE *fd = G_oxfilep;
if (G_oxserv_sigusr1cnt > 0) {
G_oxserv_sigusr1flag = 1;
return ;
}
DPRINTF(("reset -- start ==> "));
G_oxserv_sigusr1flag = 0;
send_ox_tag(fd, OX_SYNC_BALL);
oxstack_init_stack();
for (;;) {
tag = receive_ox_tag(fd);
DPRINTF(("[OX:%d=0x%x]", tag, tag));
if (tag == OX_SYNC_BALL)
break;
if (tag == OX_DATA)
receive_cmo(fd);
else
receive_int32(fd);
}
DPRINTF((" <== end.\n"));
longjmp(G_jmpbuf, sig);
}
/*****************************************************************************
* execute sm command
*
* PARAM : NONE
* RETURN: NONE
*****************************************************************************/
static int
oxserv_execute_sm_command(OXFILE *fd, int code)
{
DPRINTF(("[SM:%d=0x%x]", code, code));
switch (code) {
case SM_popCMO: /* 262 */
oxserv_sm_popCMO(fd);
break;
case SM_executeStringByLocalParser: /* 268 */
if (G_userExecuteStringParser)
oxserv_sm_executeStringByLocalParser();
break;
case SM_executeStringByLocalParserInBatchMode: /* 274 */
if (G_userExecuteStringParser)
oxserv_sm_executeStringByLocalParserInBatchMode();
break;
case SM_pops: /* 265 */
oxserv_sm_pops();
break;
case SM_popString: /* 263 */
oxserv_sm_popString(fd);
break;
case SM_getsp: /* 275 */
oxserv_sm_getsp();
break;
case SM_mathcap: /* 264 */
oxserv_sm_mathcap();
break;
case SM_setMathCap: /* 273 */
/* dont support */
oxstack_pop();
break;
case SM_executeFunction: /* 269 */
if (G_userExecuteFunction)
oxserv_sm_executeFunction();
break;
case SM_pushCMOtag: /* 277 */
oxserv_sm_pushCMOtag();
break;
case SM_dupErrors: /* 276 */
oxserv_sm_dupErrors();
break;
case SM_popSerializedLocalObject:
case SM_setName:
case SM_evalName:
case SM_beginBlock:
case SM_endBlock:
case SM_shutdown:
case SM_executeFunctionAndPopCMO:
case SM_executeFunctionAndPopSerializedLocalObject:
case SM_control_reset_connection:
case SM_control_reset_connection_server:
default:
break;
}
return (OXSERV_SUCCESS);
}
/*****************************************************************************
* reveice ox_data
*
* PARAM : fd : OXFILE
* RETURN: NONE
*****************************************************************************/
static int
oxserv_ox_receive(OXFILE *fd)
{
int tag;
cmo *c;
int ret = OXSERV_SUCCESS;
int code;
tag = receive_ox_tag(fd);
switch (tag) {
case OX_DATA:
BLOCK_INPUT();
c = receive_cmo(fd);
UNBLOCK_INPUT();
DPRINTF(("[CMO:%d=0x%x]", c->tag, c->tag));
oxstack_push(c);
break;
case OX_COMMAND:
code = receive_int32(fd);
ret = oxserv_execute_sm_command(fd, code);
break;
default:
DPRINTF(("receive unknown ox_tag: %d=0x%x\n", tag, tag));
return (OXSERV_FAILURE);
}
return (ret);
}
int
oxserv_receive(OXFILE *fd)
{
int i = 0;
int ret;
ret = setjmp(G_jmpbuf);
if (ret == 0) {
DPRINTF(("setjmp first time -- %d\n", ret));
} else {
DPRINTF(("setjmp return from longjmp() -- %d -- \n", ret));
}
for (;; i++) {
ret = oxserv_ox_receive(fd);
if (ret != OXSERV_SUCCESS)
break;
}
return (ret);
}
/*****************************************************************************
* initialize oxserver
*
* PARAM : see oxserv_mathcap_init()
* RETURN: success : OXSERV_SUCCESS
* : failure : OXSERV_FAILURE
* SEE : oxserv_mathcap_init()
* : oxserv_set();
*****************************************************************************/
int
oxserv_init(OXFILE *oxfp, int ver, char *vstr, char *sysname, int *cmos, int *sms)
{
int ret;
DPRINTF(("init start\n"));
ret = oxstack_init_stack();
if (ret != OXSERV_SUCCESS)
return (ret);
G_oxfilep = oxfp;
oxserv_mathcap_init(ver, vstr, sysname, cmos, sms);
signal(SIGUSR1, oxserv_sm_control_reset_connection);
/* initialize GMP memory functions. */
mp_set_memory_functions(oxserv_malloc, oxserv_realloc, oxserv_free);
/* session start */
oxf_determine_byteorder_server(oxfp);
return (OXSERV_SUCCESS);
}
/*****************************************************************************
* set oxserver behavior
*
* PARAM : mode : mode
* :
* : ptr :
* : rsv : reserve space.
* RETURN: success : OXSERV_SUCCESS
* : failure : OXSERV_FAILURE
* SEE :
*****************************************************************************/
int
oxserv_set(int mode, void *ptr, void *rsv)
{
switch (mode) {
case OXSERV_SET_EXECUTE_FUNCTION:
G_userExecuteFunction = (void (*)(const char *, cmo **, int))ptr;
break;
case OXSERV_SET_EXECUTE_STRING_PARSER:
G_userExecuteStringParser = (void (*)(const char *))ptr;
break;
case OXSERV_SET_CONVERT_CMO:
G_convertCmo = (cmo *(*)(cmo *))ptr;
break;
case OXSERV_SET_DELETE_CMO:
G_DeleteCmo = (void (*)(cmo *))ptr;
break;
case OXSERV_SET_GET_CMOTAG:
G_getCmoTag = (int (*)(cmo *))ptr;
break;
default:
return (OXSERV_FAILURE);
}
return (OXSERV_SUCCESS);
}
/*****************************************************************************
* destroy
*
* PARAM : NONE
* RETURN: NONE
*****************************************************************************/
void
oxserv_dest()
{
oxserv_delete_cmo((cmo *)G_oxserv_mathcap);
oxstack_dest();
}
#if __OXSERV_DEBUG
/*===========================================================================*
* DEBUG
*===========================================================================*/
void
oxserv_executeFunction(const char *func, cmo **arg, int argc)
{
int i;
printf("%s()\n", func);
for (i = 0; i < argc; i++) {
printf("\t%2d: %s\n", i, new_string_set_cmo(arg[i]));
}
return ;
}
/*****************************************************************************
* main
*
* PARAM : NONE
* RETURN: NONE
*****************************************************************************/
int
main(int argc, char *argv[])
{
int fd = 3;
int i;
int ret;
OXFILE *oxfp = oxf_open(fd);
ox_stderr_init(stderr);
oxserv_set(OXSERV_SET_EXECUTE_FUNCTION, oxserv_executeFunction, NULL);
oxserv_init(oxfp, 0, "$Date: 2003/11/02 16:39:16 $", "oxserv", NULL, NULL);
ret = oxserv_receive(oxfp);
oxserv_dest();
oxf_close(oxfp);
return (0);
}
#endif