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1 files changed, 28 insertions, 0 deletions

diff --git a/sys/nmemio/vmalloc.x b/sys/nmemio/vmalloc.x
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+# 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