diff options
Diffstat (limited to 'sys/nmemio/vmalloc.x')
| -rw-r--r-- | sys/nmemio/vmalloc.x | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sys/nmemio/vmalloc.x b/sys/nmemio/vmalloc.x new file mode 100644 index 00000000..25e2de0d --- /dev/null +++ b/sys/nmemio/vmalloc.x @@ -0,0 +1,28 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +include <syserr.h> +include <config.h> +include <mach.h> + +# VMALLOC -- Like malloc, but force the buffer to be aligned on a virtual +# memory page boundary. This feature can be used, e.g., in 4.XBSD UNIX +# to "bypass" the system buffer cache (to avoid copying file data from the +# system cache into the file buffer). VMALLOC can be made equivalent to MALLOC +# via the parameters in <config.h>, if the local machine which does not have +# virtual memory. + +procedure vmalloc (ubufp, nelems, dtype) + +pointer ubufp # user buffer pointer (output) +int nelems # number of elements of storage required +int dtype # datatype of the storage elements + +int sz_align, fwa_align +int malloc1() + +begin + sz_align = SZ_VMEMALIGN + fwa_align = VMEM_BASE + if (malloc1 (ubufp, nelems, dtype, sz_align, fwa_align) == ERR) + call syserr (SYS_MFULL) +end |