Mercurial > dwm-meillo
annotate util.c @ 65:4f7b232bd72d
if stdin writer stops working, dwm consumed much IO load because it still tried to select on this fd, fixed
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Fri, 14 Jul 2006 17:30:37 +0200 |
| parents | f14858218641 |
| children | 50450aa24a46 |
| rev | line source |
|---|---|
| 2 | 1 /* |
| 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com> | |
| 3 * See LICENSE file for license details. | |
| 4 */ | |
| 5 | |
| 6 #include <stdarg.h> | |
| 7 #include <stdio.h> | |
| 8 #include <stdlib.h> | |
| 5 | 9 #include <sys/types.h> |
| 10 #include <sys/wait.h> | |
| 11 #include <unistd.h> | |
| 12 | |
| 43 | 13 #include "dwm.h" |
| 2 | 14 |
| 15 void | |
|
33
e90449e03167
new stuff (some warning elimination)
Anselm R. Garbe <garbeam@wmii.de>
parents:
32
diff
changeset
|
16 error(const char *errstr, ...) { |
| 2 | 17 va_list ap; |
| 18 va_start(ap, errstr); | |
| 19 vfprintf(stderr, errstr, ap); | |
| 20 va_end(ap); | |
| 21 exit(1); | |
| 22 } | |
| 23 | |
|
3
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
24 static void |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
25 bad_malloc(unsigned int size) |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
26 { |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
27 fprintf(stderr, "fatal: could not malloc() %d bytes\n", |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
28 (int) size); |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
29 exit(1); |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
30 } |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
31 |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
32 void * |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
33 emallocz(unsigned int size) |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
34 { |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
35 void *res = calloc(1, size); |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
36 if(!res) |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
37 bad_malloc(size); |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
38 return res; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
39 } |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
40 |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
41 void |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
42 swap(void **p1, void **p2) |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
43 { |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
44 void *tmp = *p1; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
45 *p1 = *p2; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
46 *p2 = tmp; |
|
e969f3575b7a
several new changes, made gridmenu working
Anselm R. Garbe <garbeam@wmii.de>
parents:
2
diff
changeset
|
47 } |
| 5 | 48 |
| 49 void | |
|
49
466591c2f967
implemented tagging a client
Anselm R. Garbe <garbeam@wmii.de>
parents:
43
diff
changeset
|
50 spawn(Arg *arg) |
| 5 | 51 { |
|
49
466591c2f967
implemented tagging a client
Anselm R. Garbe <garbeam@wmii.de>
parents:
43
diff
changeset
|
52 char **argv = (char **)arg->argv; |
| 14 | 53 if(!argv || !argv[0]) |
| 5 | 54 return; |
| 55 if(fork() == 0) { | |
| 56 if(fork() == 0) { | |
| 57 if(dpy) | |
| 58 close(ConnectionNumber(dpy)); | |
|
9
d567f430a81d
fixed several stuff (gridwm gets better and better)
Anselm R. Garbe <garbeam@wmii.de>
parents:
6
diff
changeset
|
59 setsid(); |
| 14 | 60 execvp(argv[0], argv); |
| 34 | 61 fprintf(stderr, "dwm: execvp %s", argv[0]); |
| 5 | 62 perror(" failed"); |
| 63 } | |
| 64 exit (0); | |
| 65 } | |
| 66 wait(0); | |
| 67 } |