24 |
|
disp_open(dname) /* open the named display driver */ |
25 |
|
char *dname; |
26 |
|
{ |
27 |
< |
char dpath[128], *com[3]; |
27 |
> |
char dpath[128], fd0[8], fd1[8], *cmd[5]; |
28 |
|
int i; |
29 |
< |
|
29 |
> |
/* get full display program name */ |
30 |
|
#ifdef DEVPATH |
31 |
|
sprintf(dpath, "%s/%s%s", DEVPATH, dname, HDSUF); |
32 |
|
#else |
33 |
|
sprintf(dpath, "dev/%s%s", dname, HDSUF); |
34 |
|
#endif |
35 |
< |
com[0] = dpath; com[1] = froot; com[2] = NULL; |
36 |
< |
i = open_process(dpd, com); |
35 |
> |
/* dup stdin and stdout */ |
36 |
> |
if (readinp) |
37 |
> |
sprintf(fd0, "%d", dup(0)); |
38 |
> |
else |
39 |
> |
strcpy(fd0, "-1"); |
40 |
> |
sprintf(fd1, "%d", dup(1)); |
41 |
> |
/* start the display process */ |
42 |
> |
cmd[0] = dpath; |
43 |
> |
cmd[1] = froot; cmd[2] = fd1; cmd[3] = fd0; |
44 |
> |
cmd[4] = NULL; |
45 |
> |
i = open_process(dpd, cmd); |
46 |
|
if (i <= 0) |
47 |
|
error(USER, "cannot start display process"); |
48 |
< |
if ((dpout = fdopen(dup(dpd[1]), "w")) == NULL) |
48 |
> |
if ((dpout = fdopen(dpd[1], "w")) == NULL) |
49 |
|
error(SYSTEM, "cannot associate FILE with display pipe"); |
50 |
+ |
dpd[1] = -1; /* causes ignored error in close_process() */ |
51 |
|
inp_flags = 0; |
52 |
+ |
/* close dup'ed stdin and stdout */ |
53 |
+ |
if (readinp) |
54 |
+ |
close(atoi(fd0)); |
55 |
+ |
close(atoi(fd1)); |
56 |
|
/* write out hologram grids */ |
57 |
|
for (i = 0; hdlist[i] != NULL; i++) |
58 |
|
disp_result(DS_ADDHOLO, sizeof(HDGRID), (char *)hdlist[i]); |
105 |
|
goto readerr; |
106 |
|
} |
107 |
|
switch (msg.type) { /* take appropriate action */ |
108 |
< |
case DR_BUNDLE: |
108 |
> |
case DR_BUNDLE: /* new bundle to calculate */ |
109 |
|
if (msg.nbytes != sizeof(PACKHEAD)) |
110 |
|
error(INTERNAL, "bad DR_BUNDLE from display process"); |
111 |
|
bundle_set(BS_ADD, (PACKHEAD *)buf, 1); |
112 |
|
break; |
113 |
< |
case DR_NEWSET: |
113 |
> |
case DR_NEWSET: /* new calculation set */ |
114 |
|
if (msg.nbytes % sizeof(PACKHEAD)) |
115 |
|
error(INTERNAL, "bad DR_NEWSET from display process"); |
116 |
|
disp_result(DS_STARTIMM, 0, NULL); |
118 |
|
disp_result(DS_ENDIMM, 0, NULL); |
119 |
|
disp_flush(); |
120 |
|
break; |
121 |
< |
case DR_ADDSET: |
121 |
> |
case DR_ADDSET: /* add to calculation set */ |
122 |
|
if (msg.nbytes % sizeof(PACKHEAD)) |
123 |
|
error(INTERNAL, "bad DR_ADDSET from display process"); |
124 |
|
disp_result(DS_STARTIMM, 0, NULL); |
125 |
|
bundle_set(BS_ADD, (PACKHEAD *)buf, msg.nbytes/sizeof(PACKHEAD)); |
126 |
|
disp_result(DS_ENDIMM, 0, NULL); |
127 |
< |
disp_check(0); /* hack -- delete usu. follows add */ |
127 |
> |
disp_flush(); |
128 |
|
break; |
129 |
< |
case DR_ADJSET: |
129 |
> |
case DR_ADJSET: /* adjust calculation set members */ |
130 |
|
if (msg.nbytes % sizeof(PACKHEAD)) |
131 |
|
error(INTERNAL, "bad DR_ADJSET from display process"); |
132 |
|
disp_result(DS_STARTIMM, 0, NULL); |
134 |
|
disp_result(DS_ENDIMM, 0, NULL); |
135 |
|
disp_flush(); |
136 |
|
break; |
137 |
< |
case DR_DELSET: |
137 |
> |
case DR_DELSET: /* delete from calculation set */ |
138 |
|
if (msg.nbytes % sizeof(PACKHEAD)) |
139 |
|
error(INTERNAL, "bad DR_DELSET from display process"); |
140 |
|
bundle_set(BS_DEL, (PACKHEAD *)buf, msg.nbytes/sizeof(PACKHEAD)); |
141 |
|
break; |
142 |
< |
case DR_ATTEN: |
142 |
> |
case DR_ATTEN: /* block for priority request */ |
143 |
|
if (msg.nbytes) |
144 |
|
error(INTERNAL, "bad DR_ATTEN from display process"); |
145 |
|
/* send acknowledgement */ |
146 |
|
disp_result(DS_ACKNOW, 0, NULL); |
147 |
|
return(disp_check(1)); /* block on following request */ |
148 |
< |
case DR_SHUTDOWN: |
148 |
> |
case DR_KILL: /* kill computation process(es) */ |
149 |
|
if (msg.nbytes) |
150 |
+ |
error(INTERNAL, "bad DR_KILL from display process"); |
151 |
+ |
if (nprocs > 0) |
152 |
+ |
done_rtrace(); |
153 |
+ |
else |
154 |
+ |
error(WARNING, "no rtrace process to kill"); |
155 |
+ |
break; |
156 |
+ |
case DR_RESTART: /* restart computation process(es) */ |
157 |
+ |
if (msg.nbytes) |
158 |
+ |
error(INTERNAL, "bad DR_RESTART from display process"); |
159 |
+ |
if (ncprocs > nprocs) |
160 |
+ |
new_rtrace(); |
161 |
+ |
else if (nprocs > 0) |
162 |
+ |
error(WARNING, "rtrace already runnning"); |
163 |
+ |
else |
164 |
+ |
error(WARNING, "holodeck not open for writing"); |
165 |
+ |
break; |
166 |
+ |
case DR_CLOBBER: /* clobber holodeck */ |
167 |
+ |
if (msg.nbytes) |
168 |
+ |
error(INTERNAL, "bad DR_CLOBBER from display process"); |
169 |
+ |
if (!force || !ncprocs) |
170 |
+ |
error(WARNING, "request to clobber holodeck denied"); |
171 |
+ |
else { |
172 |
+ |
error(WARNING, "clobbering holodeck contents"); |
173 |
+ |
hdclobber(NULL); |
174 |
+ |
} |
175 |
+ |
break; |
176 |
+ |
case DR_SHUTDOWN: /* shut down program */ |
177 |
+ |
if (msg.nbytes) |
178 |
|
error(INTERNAL, "bad DR_SHUTDOWN from display process"); |
179 |
|
return(0); /* zero return signals shutdown */ |
180 |
< |
case DR_NOOP: |
180 |
> |
case DR_NOOP: /* do nothing */ |
181 |
|
break; |
182 |
|
default: |
183 |
|
error(INTERNAL, "unrecognized request from display process"); |