+/*
+ * Copyright (c) 2008 Johns Hopkins University.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written
+ * agreement is hereby granted, provided that the above copyright
+ * notice, the (updated) modification history and the author appear in
+ * all copies of this source code.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, LOSS OF USE, DATA,
+ * OR PROFITS) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/*
+ * @author Chieh-Jan Mike Liang <cliang4@cs.jhu.edu>
+ */
+
+module BlockingCollectionSenderImplP {
+ provides {
+ interface BlockingSend[uint8_t client];
+ interface Init;
+ }
+
+ uses {
+ interface Send[uint8_t client];
+ interface SystemCall;
+ interface Mutex;
+ interface Packet;
+ interface Leds;
+ interface CollectionPacket;
+ interface CollectionId[uint8_t client];
+ }
+}
+
+implementation {
+ typedef struct params {
+ message_t *msg;
+ uint8_t len;
+ error_t error;
+ } params_t;
+
+ syscall_t* send_call;
+ mutex_t my_mutex;
+
+ command error_t Init.init()
+ {
+ call Mutex.init(&my_mutex);
+ return SUCCESS;
+ }
+
+ void sendTask(syscall_t *s)
+ {
+ params_t* p = s->params;
+
+ call CollectionPacket.setType(p->msg, call CollectionId.fetch[s->id]());
+ p->error = call Send.send[s->id](p->msg, p->len);
+ if(p->error != SUCCESS) {
+ call SystemCall.finish(s);
+ }
+ }
+
+ command error_t BlockingSend.send[uint8_t client](message_t *msg, uint8_t len)
+ {
+ syscall_t s;
+ params_t p;
+ call Mutex.lock(&my_mutex);
+ send_call = &s;
+
+ p.msg = msg;
+ p.len = len;
+
+ call SystemCall.start(&sendTask, &s, client, &p);
+
+ atomic {
+ call Mutex.unlock(&my_mutex);
+ return p.error;
+ }
+ }
+
+ event void Send.sendDone[uint8_t client](message_t* m, error_t error)
+ {
+ if (client == send_call->id) {
+ params_t* p;
+
+ p = send_call->params;
+ p->error = error;
+ call SystemCall.finish(send_call);
+ }
+ }
+
+ command error_t BlockingSend.cancel[uint8_t client](message_t* msg)
+ {
+ return call Send.cancel[client](msg);
+ }
+
+ command uint8_t BlockingSend.maxPayloadLength[uint8_t client]()
+ {
+ return call Send.maxPayloadLength[client]();
+ }
+
+ command void* BlockingSend.getPayload[uint8_t client](message_t* msg, uint8_t len)
+ {
+ return call Send.getPayload[client](msg, len);
+ }
+
+ default command collection_id_t CollectionId.fetch[uint8_t id]() { return 0; }
+}