From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

---
 sys/nmemio/zzdebug.x | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 sys/nmemio/zzdebug.x

(limited to 'sys/nmemio/zzdebug.x')

diff --git a/sys/nmemio/zzdebug.x b/sys/nmemio/zzdebug.x
new file mode 100644
index 00000000..556c4fa1
--- /dev/null
+++ b/sys/nmemio/zzdebug.x
@@ -0,0 +1,86 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# Debug MEMIO.
+
+task	stack=t_stack, realloc=t_realloc
+
+
+# Test the SALLOC routine, which allocates storage on the stack.
+
+procedure t_stack
+
+int	bufsize
+pointer	sp, junk
+int	clglpi()
+
+begin
+	call smark (sp)
+
+	while (clglpi ("buffer_size", bufsize) != EOF) {
+	    call salloc (junk, bufsize, TY_CHAR)
+	    call printf ("buffer pointer=%d, size=%d\n")
+		call pargi (junk)
+		call pargi (bufsize)
+	    call flush (STDOUT)
+	}
+
+	call sfree (sp)
+end
+
+
+# Test the REALLOC procedure, used to change the size of a buffer.
+# Work with two buffers, so that memory can be fragmented, forcing buffers
+# to move.
+
+procedure t_realloc()
+
+pointer	a, b
+int	sza, new_sza, szb, new_szb
+int	clgeti()
+
+begin
+	call malloc (a, SZ_LINE, TY_CHAR)
+	call strcpy ("abcdefghijk", Memc[a], ARB)
+	sza = SZ_LINE
+	call malloc (b, SZ_LINE, TY_CHAR)
+	call strcpy ("0123456789", Memc[b], ARB)
+	szb = SZ_LINE
+
+	call eprintf ("a is at %d, size %d: %s\n")
+	    call pargi (a)
+	    call pargi (sza)
+	    call pargstr (Memc[a])
+	call eprintf ("b is at %d, size %d: %s\n")
+	    call pargi (b)
+	    call pargi (szb)
+	    call pargstr (Memc[b])
+	call eprintf ("-------------------------------\n")
+
+	repeat {
+	    new_sza = clgeti ("a_bufsize")
+	    if (new_sza == 0)
+		return
+	    call x_realloc (a, new_sza, TY_CHAR)
+	    new_szb = clgeti ("b_bufsize")
+	    if (new_szb == 0)
+		return
+	    call x_realloc (b, new_szb, TY_CHAR)
+
+	    call eprintf ("a buf %d, size %d --> %d: %s\n")
+		call pargi (a)
+		call pargi (sza)
+		call pargi (new_sza)
+		call pargstr (Memc[a])
+	    call eprintf ("b buf %d, size %d --> %d: %s\n")
+		call pargi (b)
+		call pargi (szb)
+		call pargi (new_szb)
+		call pargstr (Memc[b])
+
+	    sza = new_sza
+	    szb = new_szb
+	}
+
+	call mfree (a, TY_CHAR)
+	call mfree (b, TY_CHAR)
+end
-- 
cgit