OpenSolaris Launch

1 files changed, 96 insertions, 0 deletions

diff --git a/usr/src/lib/efcode/extend/fthread.c b/usr/src/lib/efcode/extend/fthread.c
new file mode 100644
index 0000000000..4c2c698a4e
--- /dev/null
+++ b/usr/src/lib/efcode/extend/fthread.c
@@ -0,0 +1,96 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2000 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <stdio.h>
+#include <fcode/private.h>
+#include <fcode/log.h>
+
+static int envp;
+static int envc;
+static fcode_env_t *envs[4];
+
+static void
+do_clone(fcode_env_t *cenv)
+{
+	fcode_env_t *new;
+
+	if (envc < 4) {
+		envs[envc] = env;
+		envc++;
+		new = clone_environment(cenv, NULL);
+		if (new) {
+			envs[envc] = new;
+			env = new;
+			return;
+		}
+	}
+	system_message(cenv, "clone failed");
+}
+
+static void
+do_switch(fcode_env_t *cenv)
+{
+	int bail = 4;
+	do {
+		envp = (envp+1)%4;
+		env = envs[envp];
+		bail--;
+	} while ((env == NULL) && (!bail));
+	log_message(MSG_INFO, "Env: %x\n", env);
+}
+
+static void
+do_release(fcode_env_t *cenv)
+{
+	int bail = 4;
+	destroy_environment(envs[envp]);
+	envs[envp] = NULL;
+	do {
+		envp = (envp+1)%4;
+		env = envs[envp];
+		bail--;
+	} while ((env == NULL) && (!bail));
+}
+
+#pragma init(_init)
+
+static void
+_init(void)
+{
+	fcode_env_t *env = initial_env;
+
+	ASSERT(env);
+	NOTICE;
+
+	envp = 0;
+	envc = 0;
+
+	FORTH(0,	"clone",		do_clone);
+	FORTH(0,	"switch",		do_switch);
+	FORTH(0,	"release",		do_release);
+}