HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| bac7913a RM |
1 | /* Emulate getpagesize on systems that lack it. */ |
| 2 | ||
| 3 | #ifndef HAVE_GETPAGESIZE | |
| 4 | ||
| eb93fe6a DM |
5 | # ifdef VMS |
| 6 | # define getpagesize() 512 | |
| 7 | # endif | |
| bac7913a | 8 | |
| eb93fe6a DM |
9 | # ifdef HAVE_UNISTD_H |
| 10 | # include <unistd.h> | |
| 11 | # endif | |
| bac7913a | 12 | |
| eb93fe6a DM |
13 | # ifdef _SC_PAGESIZE |
| 14 | # define getpagesize() sysconf(_SC_PAGESIZE) | |
| 15 | # else | |
| 16 | # include <sys/param.h> | |
| 17 | # ifdef EXEC_PAGESIZE | |
| 18 | # define getpagesize() EXEC_PAGESIZE | |
| 19 | # else /* no EXEC_PAGESIZE */ | |
| 20 | # ifdef NBPG | |
| 21 | # define getpagesize() NBPG * CLSIZE | |
| 22 | # ifndef CLSIZE | |
| 23 | # define CLSIZE 1 | |
| 24 | # endif /* no CLSIZE */ | |
| 25 | # else /* no NBPG */ | |
| 26 | # ifdef NBPC | |
| 27 | # define getpagesize() NBPC | |
| 28 | # else /* no NBPC */ | |
| 29 | # ifdef PAGESIZE | |
| 30 | # define getpagesize() PAGESIZE | |
| 31 | # endif /* PAGESIZE */ | |
| 32 | # endif /* no NBPC */ | |
| 33 | # endif /* no NBPG */ | |
| 34 | # endif /* no EXEC_PAGESIZE */ | |
| 35 | # endif /* no _SC_PAGESIZE */ | |
| bac7913a | 36 | |
| eb93fe6a | 37 | #endif /* no HAVE_GETPAGESIZE */ |