Initial commit

1 files changed, 47 insertions, 0 deletions

diff --git a/sys/gio/stdgraph/stgclose.x b/sys/gio/stdgraph/stgclose.x
new file mode 100644
index 00000000..3d7eb70b
--- /dev/null
+++ b/sys/gio/stdgraph/stgclose.x
@@ -0,0 +1,47 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	"stdgraph.h"
+
+# STG_CLOSE -- Close the STDGRAPH kernel.  Free all storage associated with the
+# stdgraph descriptor.  Note that the stdgraph kernel may be multiply opened
+# (connected to two or more graphics steams, e.g., both STDGRAPH and STDIMAGE),
+# hence we do not physically close down until the last stream is closed.
+
+procedure stg_close()
+
+include	"stdgraph.com"
+
+begin
+	g_nopen = g_nopen - 1
+
+	if (g_nopen <= 0) {
+	    call stg_deactivatews (0)
+	    call flush (g_out)
+	    call mfree (SG_SBUF(g_sg), TY_CHAR)
+	    call mfree (g_sg, TY_STRUCT)
+
+	    if (g_tty != NULL) {
+		call ttycdes (g_tty)
+		g_tty = NULL
+	    }
+
+	    if (g_term != NULL) {
+		call ttycdes (g_term)
+		g_term = NULL
+	    }
+
+	    if (g_pbtty != NULL) {
+		call ttycdes (g_pbtty)
+		g_pbtty = NULL
+	    }
+
+	    if (g_msgbuf != NULL) {
+		call mfree (g_msgbuf, TY_CHAR)
+		g_msgbuf = NULL
+		g_msgbuflen = 0
+		g_msglen = 0
+	    }
+
+	    g_nopen = 0
+	}
+end