Annotation of OpenXM/src/kan96xx/Kan/ext.c, Revision 1.1
1.1 ! maekawa 1: #include <stdio.h>
! 2: #include <sys/types.h>
! 3: #include <sys/stat.h>
! 4: #include <fcntl.h>
! 5: #include <stdlib.h>
! 6: #include <unistd.h>
! 7: #include <sys/wait.h>
! 8: #include "datatype.h"
! 9: #include "stackm.h"
! 10: #include "extern.h"
! 11: #include "extern2.h"
! 12: #include <signal.h>
! 13: #include "plugin.h"
! 14:
! 15: #define MYCP_SIZE 100
! 16: static int Mychildren[MYCP_SIZE];
! 17: static int Mycp = 0;
! 18: static void mywait() {
! 19: int status;
! 20: int pid;
! 21: int i,j;
! 22: signal(SIGCHLD,SIG_IGN);
! 23: pid = wait(&status);
! 24: fprintf(stderr,"Child process %d is exiting.\n",pid);
! 25: for (i=0; i<Mycp; i++) {
! 26: if (Mychildren[i] == pid) {
! 27: for (j=i; j<Mycp-1; j++) {
! 28: Mychildren[j] = Mychildren[j+1];
! 29: }
! 30: if (Mycp > 0) Mycp--;
! 31: }
! 32: }
! 33: signal(SIGCHLD,mywait);
! 34: }
! 35:
! 36: #define SIZE_OF_ENVSTACK 5
! 37: static jmp_buf EnvStack[SIZE_OF_ENVSTACK];
! 38: static int Envp = 0;
! 39: static void pushEnv(jmp_buf jb) {
! 40: if (Envp < SIZE_OF_ENVSTACK) {
! 41: *(EnvStack[Envp]) = *jb;
! 42: Envp++;
! 43: }else{
! 44: fprintf(stderr,"Overflow of EnvStack.\n");
! 45: exit(2);
! 46: }
! 47: }
! 48: static void popEnv(jmp_buf jbp) {
! 49: if (Envp <= 0) {
! 50: fprintf(stderr,"Underflow of EnvStack.\n");
! 51: exit(3);
! 52: }else{
! 53: Envp--;
! 54: *jbp = *EnvStack[Envp];
! 55: }
! 56: }
! 57:
! 58: static char *ext_generateUniqueFileName(char *s)
! 59: {
! 60: char *t;
! 61: int i;
! 62: struct stat statbuf;
! 63: t = (char *)sGC_malloc(sizeof(char)*strlen(s)+4+2);
! 64: for (i=0; i<1000; i++) {
! 65: /* Give up if we failed for 1000 names. */
! 66: sprintf(t,"%s.%d",s,i);
! 67: /* if (phc_overwrite) return(t); */
! 68: if (stat(t,&statbuf) < 0) {
! 69: return(t);
! 70: }
! 71: }
! 72: errorKan1("%s\n","ext_generateUniqueFileName: could not generate a unique file name. Exhausted all the names.");
! 73: return(NULL);
! 74: }
! 75:
! 76: struct object Kextension(struct object obj)
! 77: {
! 78: char *key;
! 79: int size;
! 80: struct object keyo;
! 81: struct object rob = NullObject;
! 82: struct object obj1,obj2,obj3,obj4;
! 83: int m,i;
! 84: int argListc, fdListc;
! 85: char *abc;
! 86: char *abc2;
! 87: extern struct context *CurrentContextp;
! 88: extern jmp_buf EnvOfStackMachine;
! 89: extern void ctrlC();
! 90: extern int SigIgn;
! 91: extern errno;
! 92: extern int DebugCMO;
! 93: extern int OXprintMessage;
! 94: struct stat buf;
! 95: char **argv;
! 96: FILE *fp;
! 97: void (*oldsig)();
! 98:
! 99: if (obj.tag != Sarray) errorKan1("%s\n","Kextension(): The argument must be an array.");
! 100: size = getoaSize(obj);
! 101: if (size < 1) errorKan1("%s\n","Kextension(): Empty array.");
! 102: keyo = getoa(obj,0);
! 103: if (keyo.tag != Sdollar) errorKan1("%s\n","Kextension(): No key word.");
! 104: key = KopString(keyo);
! 105:
! 106: /* branch by they key word. */
! 107: if (strcmp(key,"parse")==0) {
! 108: if (size != 2) errorKan1("%s\n","[(parse) string] extension.");
! 109: obj1 = getoa(obj,1);
! 110: if (obj1.tag != Sdollar) errorKan1("%s\n","[(parse) string] extension");
! 111:
! 112: pushEnv(EnvOfStackMachine);
! 113: m = KSexecuteString(obj1.lc.str);
! 114: /* This is critical area. If you catch ctrl-c here, program crashes. */
! 115: oldsig = signal(SIGINT,SIG_IGN);
! 116: popEnv(EnvOfStackMachine);
! 117: /* OK! We passed the critical area. */
! 118: signal(SIGINT,oldsig);
! 119: rob = KpoInteger(m);
! 120: }else if (strcmp(key,"getpid") == 0) {
! 121: rob = KpoInteger( (int) getpid() );
! 122: }else if (strcmp(key,"flush") == 0) {
! 123: /* fflush(NULL); */
! 124: fflush(stdout);
! 125: rob.tag = Snull;
! 126: }else if (strcmp(key,"chattrs")==0) {
! 127: if (size != 2) errorKan1("%s\n","[(chattrs) num] extension.");
! 128: obj1 = getoa(obj,1);
! 129: if (obj1.tag != Sinteger) errorKan1("%s\n","[(chattrs) num] extension.");
! 130: m = KopInteger(obj1);
! 131: if (!( m == 0 || m == PROTECT || m == ABSOLUTE_PROTECT))
! 132: errorKan1("%s\n","The number must be 0, 1 or 2.");
! 133: putUserDictionary2((char *)NULL,0,0,m | SET_ATTR_FOR_ALL_WORDS,
! 134: CurrentContextp->userDictionary);
! 135: }else if (strcmp(key,"keywords")==0) {
! 136: if (size != 1) errorKan1("%s\n","[(keywords)] extension.");
! 137: rob = showSystemDictionary(1);
! 138: /* }else if (strcmp(key,"fork0")==0) {
! 139: if (size != 2) errorKan1("%s\n","[(fork0) sss] extension.");
! 140: m = fork();
! 141: if (m>0) { rob = KpoInteger(m); }
! 142: else {
! 143: system(KopString(getoa(obj,1))); exit(0);
! 144: } */
! 145: }else if (strcmp(key,"defaultPolyRing")==0) {
! 146: if (size != 2) errorKan1("%s\n","[(defaultPolyRing) n] extension.");
! 147: rob = KdefaultPolyRing(getoa(obj,1));
! 148: }else if (strcmp(key,"getenv")==0) {
! 149: if (size != 2) errorKan1("%s\n","[(getenv) envstr] extension.");
! 150: obj1 = getoa(obj,1);
! 151: if (obj1.tag != Sdollar) errorKan1("%s\n","[(getenv) envstr] extension");
! 152: abc = getenv(KopString(obj1));
! 153: if (abc == NULL) {
! 154: rob = NullObject;
! 155: }else{
! 156: abc2 = (char *)sGC_malloc(sizeof(char)*(strlen(abc)+2));
! 157: strcpy(abc2,abc);
! 158: rob = KpoString(abc2);
! 159: }
! 160: }else if (strcmp(key,"stat")==0) {
! 161: if (size != 2) errorKan1("%s\n","[(stat) fname] extension.");
! 162: obj1 = getoa(obj,1);
! 163: if (obj1.tag != Sdollar) errorKan1("%s\n","[(stat) fname] extension ; string fname.");
! 164: m = stat(KopString(obj1),&buf);
! 165: rob = newObjectArray(2);
! 166: if (m == -1) {
! 167: /* fail */
! 168: obj2 = NullObject;
! 169: putoa(rob,0,obj2);
! 170: obj3 = newObjectArray(2);
! 171: putoa(obj3,0,KpoString("error no"));
! 172: putoa(obj3,1,KpoInteger(errno));
! 173: putoa(rob,1,obj3);
! 174: }else{
! 175: /* success */
! 176: putoa(rob,0,KpoInteger(0));
! 177: putoa(rob,1,newObjectArray(0)); /* We have not yet read buf */
! 178: }
! 179: }else if (strcmp(key,"forkExec")==0) {
! 180: if (size != 4) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension.");
! 181: obj1 = getoa(obj,1);
! 182: if (obj1.tag != Sarray) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. array argList.");
! 183: obj2 = getoa(obj,2);
! 184: if (obj2.tag != Sarray) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. array fdList.");
! 185: obj3 = getoa(obj,3);
! 186: if (obj3.tag != Sinteger) errorKan1("%s\n","[(forkExec) argList fdList sigblock] extension. integer sigblock.");
! 187: m = KopInteger(obj3); /* m == 1 : block ctrl-C. */
! 188: argListc = getoaSize(obj1);
! 189: fdListc = getoaSize(obj2);
! 190: if ((m = fork()) > 0) {
! 191: /* parent */
! 192: signal(SIGCHLD,mywait); /* to kill Zombie */
! 193: Mychildren[Mycp++] = m;
! 194: if (Mycp >= MYCP_SIZE-1) {
! 195: errorKan1("%s\n","Child process table is full.\n");
! 196: Mycp = 0;
! 197: }
! 198: rob = KpoInteger(m);
! 199: /* Done */
! 200: }else{
! 201: /* Child */
! 202: for (i=0; i<fdListc; i++) {
! 203: /* close the specified files */
! 204: close(KopInteger(getoa(obj2,i)));
! 205: }
! 206: /* execl */
! 207: if (m == 1) {
! 208: {
! 209: sigset_t sss;
! 210: sigemptyset(&sss);
! 211: sigaddset(&sss,SIGINT);
! 212: sigprocmask(SIG_BLOCK,&sss,NULL);
! 213: }
! 214: }
! 215: argv = (char **) sGC_malloc(sizeof(char *)*(argListc+1));
! 216: if (argv == NULL) {
! 217: fprintf(stderr," no more momory. forkExec --- exiting.\n");
! 218: _exit(10);
! 219: }
! 220: for (i=0; i<argListc; i++) {
! 221: argv[i] = KopString(getoa(obj1,i));
! 222: argv[i+1] = NULL;
! 223: }
! 224: execv(argv[0],argv);
! 225: /* This place will never be reached unless execv fails. */
! 226: fprintf(stderr,"forkExec fails: ");
! 227: for (i=0; i<argListc; i++) {
! 228: fprintf(stderr,"%s ",argv[i]);
! 229: }
! 230: fprintf(stderr,"\nExiting, but staying as Zombie.\n");
! 231: _exit(10);
! 232: }
! 233: }else if (strcmp(key,"getchild")==0) {
! 234: if (size != 1) errorKan1("%s\n","[(getchild)] extension.");
! 235: rob = newObjectArray(Mycp);
! 236: for (i=0; i<Mycp; i++) {
! 237: putoa(rob,i,KpoInteger(Mychildren[i]));
! 238: }
! 239: }else if (strcmp(key,"getUniqueFileName")==0) {
! 240: if (size != 2) errorKan1("%s\n","[(getUniqueFileName) path] extension.");
! 241: obj1 = getoa(obj,1);
! 242: if (obj1.tag != Sdollar) errorKan1("%s\n","[(getUniqueFileName) path] extension. path must be a string.");
! 243: rob = KpoString(ext_generateUniqueFileName(KopString(obj1)));
! 244: }else if (strcmp(key,"outputObjectToFile")==0) {
! 245: if (size != 3) errorKan1("%s\n","[(outputObjectToFile) path obj] extension.");
! 246: obj1 = getoa(obj,1);
! 247: if (obj1.tag != Sdollar) errorKan1("%s\n","[(outputObjectToFile) path obj] extension. path must be a string.");
! 248: obj2 = getoa(obj,2);
! 249: fp = fopen(KopString(obj1),"w");
! 250: if (fp == NULL) errorKan1("%s\n","[(outputObjectToFile) path object] extension : could not open the path.");
! 251: printObject(obj2,0,fp);
! 252: fclose(fp);
! 253: rob = NullObject;
! 254: }else if (strcmp(key,"hilbert")==0) {
! 255: if (size != 3) errorKan1("%s\n","[(hilbert) obgb obvlist] extension.");
! 256: rob = hilberto(getoa(obj,1),getoa(obj,2));
! 257: }else if (strcmp(key,"chattr")==0) {
! 258: if (size != 3) errorKan1("%s\n","[(chattr) num symbol] extension.");
! 259: obj1 = getoa(obj,1);
! 260: obj2 = getoa(obj,2);
! 261: if (obj1.tag != Sinteger) errorKan1("%s\n","[(chattr) num symbol] extension.");
! 262: if (obj2.tag != Sstring) errorKan1("%s\n","[(chattr) num symbol] extension.");
! 263: m = KopInteger(obj1);
! 264: if (!( m == 0 || m == PROTECT || m == ABSOLUTE_PROTECT))
! 265: errorKan1("%s\n","The number must be 0, 1 or 2.");
! 266: putUserDictionary2(obj2.lc.str,(obj2.rc.op->lc).ival,(obj2.rc.op->rc).ival,
! 267: m,CurrentContextp->userDictionary);
! 268: }
! 269: #include "plugin.hh"
! 270: else{
! 271: errorKan1("%s\n","Unknown tag for extension.");
! 272: }
! 273:
! 274:
! 275: return(rob);
! 276: }
! 277:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to ext.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [local] / OpenXM / src / kan96xx / Kan