1 files changed, 87 insertions, 0 deletions
diff --git a/system/kernel/pdp_dpd_command.c b/system/kernel/pdp_dpd_command.c
new file mode 100644
index 0000000..d812cf2
--- /dev/null
+++ b/system/kernel/pdp_dpd_command.c
@@ -0,0 +1,87 @@
+
+/*
+ *   Pure Data Packet header file. DPD command class
+ *   Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/* this object implements a dpd command queue and command object */
+
+#include "pdp_dpd_command.h"
+#include "pdp_mem.h"
+
+void pdp_dpd_commandfactory_init(t_pdp_dpd_commandfactory *x, u32 size)
+{
+    x->nb_commands = 0;
+    x->command_size = size;
+    x->command = 0;
+}
+
+void _pdp_dpd_commandfactory_free(t_pdp_dpd_command *x)
+{
+    if (x) _pdp_dpd_commandfactory_free(x->next);
+    pdp_dealloc(x);
+}
+
+void pdp_dpd_commandfactory_free(t_pdp_dpd_commandfactory *x)
+{
+    _pdp_dpd_commandfactory_free(x->command);
+    x->command = 0;
+    x->nb_commands = 0;
+}
+
+
+/* factory method */
+t_pdp_dpd_command *pdp_dpd_commandfactory_get_new_command(t_pdp_dpd_commandfactory *x)
+{
+
+    t_pdp_dpd_command *c = x->command;
+    t_pdp_dpd_command *oldhead = c;
+
+    /* check if we can reuse */
+    while (c){
+	if (!c->used){
+	    c->used = 1;
+	    //post("reusing command %x", c, c->used);
+	    return c;
+	}
+	//post("command %x is used %d", c, c->used);
+	c = c->next;
+    }
+
+    /* create a new command */
+    x->command = (t_pdp_dpd_command *)pdp_alloc(x->command_size);
+    x->command->next = oldhead;
+    x->command->used = 1;
+    x->nb_commands++;
+    //post("created command %x, nbcommands: %d", x->command, x->nb_commands);
+    return x->command;
+
+}
+
+
+/* (self)destructor */
+void pdp_dpd_command_suicide(void *x)
+{
+    t_pdp_dpd_command *c = (t_pdp_dpd_command *)x;
+    c->used = 0;
+    //post("command %x committed suicide %d", c, c->used);
+}
+
+
+
+