Initial commit

1 files changed, 27 insertions, 0 deletions

diff --git a/sys/memio/mfree.x b/sys/memio/mfree.x
new file mode 100644
index 00000000..f7c83f1d
--- /dev/null
+++ b/sys/memio/mfree.x
@@ -0,0 +1,27 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<syserr.h>
+
+# MFREE -- Free a previously allocated buffer.  If the buffer has already been
+# returned (NULL pointer), ignore the request.  Once the buffer has been
+# returned, the old pointer value is of not useful (and invalid), so set it
+# to NULL.
+
+procedure mfree (ptr, dtype)
+
+pointer	ptr
+int	fwa, dtype, status
+int	mgtfwa()
+errchk	mgtfwa
+
+begin
+	if (ptr != NULL) {
+	    fwa = mgtfwa (ptr, dtype)
+
+	    call zmfree (fwa, status)
+	    if (status == ERR)
+		call sys_panic (SYS_MCORRUPTED, "Memory has been corrupted")
+
+	    ptr = NULL
+	}
+end