diff options
Diffstat (limited to 'winsup/cygwin/sysconf.cc')
| -rw-r--r-- | winsup/cygwin/sysconf.cc | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/winsup/cygwin/sysconf.cc b/winsup/cygwin/sysconf.cc index a6383dccb..964fdb1ab 100644 --- a/winsup/cygwin/sysconf.cc +++ b/winsup/cygwin/sysconf.cc @@ -13,9 +13,11 @@ details. */ #include <errno.h> #include <time.h> #include <limits.h> +#include <ntdef.h> #include "fhandler.h" #include "dtable.h" #include "cygerrno.h" +#include "ntdll.h" /* sysconf: POSIX 4.8.1.1 */ /* Allows a portable app to determine quantities of resources or @@ -57,6 +59,39 @@ sysconf (int in) case _SC_STREAM_MAX: return _POSIX_STREAM_MAX; #endif + case _SC_NPROCESSORS_CONF: + case _SC_NPROCESSORS_ONLN: + if (os_being_run != winNT) + return 1; + /*FALLTHRU*/ + case _SC_PHYS_PAGES: + case _SC_AVPHYS_PAGES: + { + NTSTATUS ret; + SYSTEM_BASIC_INFORMATION sbi; + if ((ret = NtQuerySystemInformation (SystemBasicInformation, + (PVOID) &sbi, + sizeof sbi, NULL)) + != STATUS_SUCCESS) + { + __seterrno_from_win_error (RtlNtStatusToDosError (ret)); + debug_printf("NtQuerySystemInformation: ret = %d, " + "Dos(ret) = %d", + ret, RtlNtStatusToDosError (ret)); + return -1; + } + switch (in) + { + case _SC_NPROCESSORS_CONF: + return sbi.NumberProcessors; + case _SC_NPROCESSORS_ONLN: + return sbi.ActiveProcessors; + case _SC_PHYS_PAGES: + return sbi.NumberOfPhysicalPages; + case _SC_AVPHYS_PAGES: + return sbi.HighestPhysicalPage - sbi.LowestPhysicalPage + 1; + } + } } /* Invalid input or unimplemented sysconf name */ |