under the terms of the license (GNU LGPL) which comes with this package. */
#include "Msg/msg_private.h"
+#include "DataDesc/datadesc_interface.h"
+#include "Transport/transport_interface.h" /* gras_trp_chunk_send/recv */
+#include "Virtu/virtu_interface.h"
GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(msg,GRAS);
* the name unchanged. Pay attention to this before free'ing the result.
*/
static char *make_namev(const char *name, short int ver) {
- char *namev=malloc(strlen(name)+2+3+1);
+ char *namev;
if (!ver)
return (char *)name;
+ namev = malloc(strlen(name)+2+3+1);
+
if (namev) {
sprintf(namev,"%s_v%d",name,ver);
}
*/
gras_error_t
gras_msgtype_declare(const char *name,
- gras_datadesc_type_t *payload,
- gras_msgtype_t **dst) {
- return gras_msgtype_declare_v(name, 0, payload, dst);
+ gras_datadesc_type_t *payload) {
+ return gras_msgtype_declare_v(name, 0, payload);
}
/**
gras_error_t
gras_msgtype_declare_v(const char *name,
short int version,
- gras_datadesc_type_t *payload,
- gras_msgtype_t **dst) {
+ gras_datadesc_type_t *payload) {
gras_error_t errcode;
gras_msgtype_t *msgtype;
errcode = gras_set_get_by_name(_gras_msgtype_set,
namev,(gras_set_elm_t**)&msgtype);
- if (errcode == mismatch_error) {
- /* create type */
- if (! (msgtype = malloc(sizeof(gras_msgtype_t))) )
- RAISE_MALLOC;
-
- msgtype->name = (namev == name ? strdup(name) : namev);
- msgtype->name_len = strlen(namev);
- msgtype->version = version;
- msgtype->ctn_type = payload;
- TRY(gras_set_add(_gras_msgtype_set, (gras_set_elm_t*)msgtype,
- &gras_msgtype_free));
+ if (errcode == no_error) {
+ VERB2("Re-register version %d of message '%s' (same payload, ignored).",
+ version, name);
+ gras_assert3(!gras_datadesc_type_cmp(msgtype->ctn_type, payload),
+ "Message %s re-registred with another payload (%s was %s)",
+ namev,gras_datadesc_get_name(payload),
+ gras_datadesc_get_name(msgtype->ctn_type));
- DEBUG2("Register version %d of message '%s'.", version, name);
- } else if (errcode == no_error) { /* found */
- if (namev != name)
- free(namev);
+ return no_error; /* do really ignore it */
- gras_assert1(!gras_datadesc_type_cmp(msgtype->ctn_type, payload),
- "Message %s registred again with a different payload",
- namev);
+ } else if (errcode == mismatch_error) {
+ INFO3("Register version %d of message '%s' (payload: %s).",
+ version, name, gras_datadesc_get_name(payload));
} else {
- if (namev != name)
- free(namev);
- return errcode; /* Error is set lookup */
+ return errcode; /* Was expecting for mismatch_error */
}
+ if (! (msgtype = malloc(sizeof(gras_msgtype_t))) )
+ RAISE_MALLOC;
+
+ msgtype->name = (namev == name ? strdup(name) : namev);
+ msgtype->name_len = strlen(namev);
+ msgtype->version = version;
+ msgtype->ctn_type = payload;
+
+ TRY(gras_set_add(_gras_msgtype_set, (gras_set_elm_t*)msgtype,
+ &gras_msgtype_free));
+
return no_error;
}
gras_error_t errcode;
char *namev = make_namev(name,version);
- TRY(gras_set_get_by_name(_gras_msgtype_set, namev,
- (gras_set_elm_t**)dst));
+ errcode = gras_set_get_by_name(_gras_msgtype_set, namev,
+ (gras_set_elm_t**)dst);
if (name != namev)
free(namev);
- return no_error;
+ return errcode;
}
/**
string_type = gras_datadesc_by_name("string");
gras_assert(string_type);
}
-
+
+ DEBUG3("send '%s' to %s:%d", msgtype->name,
+ gras_socket_peer_name(sock),gras_socket_peer_port(sock));
TRY(gras_trp_chunk_send(sock, GRAS_header, 6));
- TRY(gras_datadesc_send(sock, string_type, msgtype->name));
+ TRY(gras_datadesc_send(sock, string_type, &msgtype->name));
TRY(gras_datadesc_send(sock, msgtype->ctn_type, payload));
+ TRY(gras_trp_flush(sock));
return no_error;
}
/**
* gras_msg_recv:
*
- * receive the next message on the given socket (which should be dropped
- * when the function returns an error)
+ * receive the next message on the given socket.
*/
gras_error_t
gras_msg_recv(gras_socket_t *sock,
gras_msgtype_t **msgtype,
- void **payload) {
-
+ void **payload,
+ int *payload_size) {
+
gras_error_t errcode;
static gras_datadesc_type_t *string_type=NULL;
char header[6];
int cpt;
int r_arch;
- char *msg_name;
+ char *msg_name=NULL;
if (!string_type) {
string_type=gras_datadesc_by_name("string");
RAISE2(mismatch_error,"GRAS protocol mismatch (got %d, use %d)",
(int)header[4], (int)GRAS_header[4]);
r_arch = (int)header[5];
+ DEBUG2("Handle an incoming message using protocol %d (remote is %s)",
+ (int)header[4],gras_datadesc_arch_name(r_arch));
- TRY(gras_datadesc_recv(sock, string_type, r_arch,(void**) &msg_name));
- TRY(gras_set_get_by_name(_gras_msgtype_set,
- msg_name,(gras_set_elm_t**)msgtype));
- TRY(gras_datadesc_recv(sock, (*msgtype)->ctn_type, r_arch, payload));
+ TRY(gras_datadesc_recv(sock, string_type, r_arch, &msg_name));
+ errcode = gras_set_get_by_name(_gras_msgtype_set,
+ msg_name,(gras_set_elm_t**)msgtype);
+ if (errcode != no_error)
+ RAISE2(errcode,
+ "Got error %s while retrieving the type associated to messages '%s'",
+ gras_error_name(errcode),msg_name);
+ /* FIXME: Survive unknown messages */
+ free(msg_name);
+
+ *payload_size=gras_datadesc_size((*msgtype)->ctn_type);
+ gras_assert2(*payload_size > 0,
+ "%s %s",
+ "Dynamic array as payload is forbided for now (FIXME?).",
+ "Reference to dynamic array is allowed.");
+ *payload = malloc(*payload_size);
+ TRY(gras_datadesc_recv(sock, (*msgtype)->ctn_type, r_arch, *payload));
return no_error;
}
gras_msg_wait(double timeout,
gras_msgtype_t *msgt_want,
gras_socket_t **expeditor,
- void **payload) {
+ void *payload) {
gras_msgtype_t *msgt_got;
+ void *payload_got;
+ int payload_size_got;
gras_error_t errcode;
double start, now;
gras_procdata_t *pd=gras_procdata_get();
gras_msg_t msg;
*expeditor = NULL;
- *payload = NULL;
+ payload_got = NULL;
VERB1("Waiting for message %s",msgt_want->name);
- start = now = gras_time();
+ start = now = gras_os_time();
gras_dynar_foreach(pd->msg_queue,cpt,msg){
if (msg.type->code == msgt_want->code) {
*expeditor = msg.expeditor;
- *payload = msg.payload;
+ memcpy(payload, msg.payload, msg.payload_size);
+ free(msg.payload);
gras_dynar_cursor_rm(pd->msg_queue, &cpt);
- VERB0("Waited message was queued");
+ VERB0("The waited message was queued");
return no_error;
}
}
while (1) {
TRY(gras_trp_select(timeout - now + start, expeditor));
- TRY(gras_msg_recv(*expeditor, &msgt_got, payload));
+ TRY(gras_msg_recv(*expeditor, &msgt_got, &payload_got, &payload_size_got));
if (msgt_got->code == msgt_want->code) {
+ memcpy(payload, payload_got, payload_size_got);
+ free(payload_got);
VERB0("Got waited message");
return no_error;
}
/* not expected msg type. Queue it for later */
msg.expeditor = *expeditor;
msg.type = msgt_got;
- msg.payload = *payload;
+ msg.payload = payload;
+ msg.payload_size = payload_size_got;
TRY(gras_dynar_push(pd->msg_queue,&msg));
- now=gras_time();
+ now=gras_os_time();
if (now - start + 0.001 < timeout) {
RAISE1(timeout_error,"Timeout while waiting for msg %s",msgt_want->name);
}
gras_msg_t msg;
gras_socket_t *expeditor;
- void *payload;
+ void *payload=NULL;
+ int payload_size;
gras_msgtype_t *msgtype;
gras_procdata_t*pd=gras_procdata_get();
- VERB1("Handling message within the next %d",timeOut);
+ VERB1("Handling message within the next %.2fs",timeOut);
/* get a message (from the queue or from the net) */
if (gras_dynar_length(pd->msg_queue)) {
} else {
TRY(gras_trp_select(timeOut, &expeditor));
- TRY(gras_msg_recv(expeditor, &msgtype, &payload));
+ TRY(gras_msg_recv(expeditor, &msgtype, &payload, &payload_size));
}
/* handle it */
}
}
if (!list) {
- INFO1("Unexpected message '%s' ignored", msgtype->name);
+ INFO1("No callback for the incomming '%s' message. Discarded.",
+ msgtype->name);
WARN0("FIXME: gras_datadesc_free not implemented => leaking the payload");
return no_error;
}
gras_dynar_foreach(list->cbs,cpt,cb) {
- if (cb(expeditor,msgtype->ctn_type,payload)) {
+ INFO3("Invoque the callback #%d (@%p) for incomming msg %s",
+ cpt+1,cb,msgtype->name);
+ if ((*cb)(expeditor,payload)) {
/* cb handled the message */
+ free(payload);
return no_error;
}
}
return mismatch_error;
}
+void
+gras_cbl_free(void *data){
+ gras_cblist_t *list=*(void**)data;
+ if (list) {
+ gras_dynar_free(list->cbs);
+ free(list);
+ }
+}
+
gras_error_t
gras_cb_register(gras_msgtype_t *msgtype,
gras_cb_t cb) {
gras_error_t errcode;
gras_procdata_t *pd=gras_procdata_get();
- gras_cblist_t *list;
+ gras_cblist_t *list=NULL;
int cpt;
+ DEBUG2("Register %p as callback to %s",cb,msgtype->name);
+
/* search the list of cb for this message on this host (creating if NULL) */
gras_dynar_foreach(pd->cbl_list,cpt,list) {
if (list->id == msgtype->code) {
}
/* Insert the new one into the set */
- TRY(gras_dynar_insert_at(list->cbs,0,cb));
+ TRY(gras_dynar_insert_at(list->cbs,0,&cb));
return no_error;
}
