/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-
+#include "xbt/ex.h"
+#include "xbt/ex_interface.h"
#include "gras/Msg/msg_private.h"
-#include "gras/DataDesc/datadesc_interface.h"
-#include "gras/Transport/transport_interface.h" /* gras_trp_chunk_send/recv */
#include "gras/Virtu/virtu_interface.h"
+#include "gras/DataDesc/datadesc_interface.h"
+#include "gras/Transport/transport_interface.h" /* gras_select */
+#include "portable.h" /* execinfo when available to propagate exceptions */
+#ifndef MIN
#define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_msg,gras,"High level messaging");
xbt_set_t _gras_msgtype_set = NULL;
-static char GRAS_header[6];
static char *make_namev(const char *name, short int ver);
+char _GRAS_header[6];
+const char *e_gras_msg_kind_names[e_gras_msg_kind_count]=
+ {"UNKNOWN","ONEWAY","RPC call","RPC answer","RPC error"};
/*
* Creating procdata for this module
static void *gras_msg_procdata_new() {
gras_msg_procdata_t res = xbt_new(s_gras_msg_procdata_t,1);
+ res->name = xbt_strdup("gras_msg");
+ res->name_len = 0;
res->msg_queue = xbt_dynar_new(sizeof(s_gras_msg_t), NULL);
res->cbl_list = xbt_dynar_new(sizeof(gras_cblist_t *),gras_cbl_free);
res->timers = xbt_dynar_new(sizeof(s_gras_timer_t), NULL);
xbt_dynar_free(&( res->msg_queue ));
xbt_dynar_free(&( res->cbl_list ));
xbt_dynar_free(&( res->timers ));
-
+
+ free(res->name);
free(res);
}
/*
* Module registration
*/
+int gras_msg_libdata_id;
void gras_msg_register() {
- gras_procdata_add("gras_msg",gras_msg_procdata_new, gras_msg_procdata_free);
+ gras_msg_libdata_id = gras_procdata_add("gras_msg",gras_msg_procdata_new, gras_msg_procdata_free);
}
/*
_gras_msgtype_set = xbt_set_new();
- memcpy(GRAS_header,"GRAS", 4);
- GRAS_header[4]=GRAS_PROTOCOL_VERSION;
- GRAS_header[5]=(char)GRAS_THISARCH;
+ memcpy(_GRAS_header,"GRAS", 4);
+ _GRAS_header[4]=GRAS_PROTOCOL_VERSION;
+ _GRAS_header[5]=(char)GRAS_THISARCH;
}
/*
return namev;
}
+/* Internal function doing the crude work of registering messages */
+void
+gras_msgtype_declare_ext(const char *name,
+ short int version,
+ e_gras_msg_kind_t kind,
+ gras_datadesc_type_t payload_request,
+ gras_datadesc_type_t payload_answer) {
+
+ gras_msgtype_t msgtype=NULL;
+ char *namev=make_namev(name,version);
+ volatile int found = 0;
+ xbt_ex_t e;
+
+ TRY {
+ msgtype = (gras_msgtype_t)xbt_set_get_by_name(_gras_msgtype_set,namev);
+ found = 1;
+ } CATCH(e) {
+ if (e.category != not_found_error)
+ RETHROW;
+ xbt_ex_free(e);
+ }
+
+ if (found) {
+ VERB2("Re-register version %d of message '%s' (same kind & payload, ignored).",
+ version, name);
+ xbt_assert3(msgtype->kind == kind,
+ "Message %s re-registered as a %s (it was known as a %s)",
+ namev,e_gras_msg_kind_names[kind],e_gras_msg_kind_names[msgtype->kind]);
+ xbt_assert3(!gras_datadesc_type_cmp(msgtype->ctn_type, payload_request),
+ "Message %s re-registred with another payload (%s was %s)",
+ namev,gras_datadesc_get_name(payload_request),
+ gras_datadesc_get_name(msgtype->ctn_type));
+
+ xbt_assert3(!gras_datadesc_type_cmp(msgtype->answer_type, payload_answer),
+ "Message %s re-registred with another answer payload (%s was %s)",
+ namev,gras_datadesc_get_name(payload_answer),
+ gras_datadesc_get_name(msgtype->answer_type));
+
+ return ; /* do really ignore it */
+
+ }
+
+ VERB4("Register version %d of message '%s' "
+ "(payload: %s; answer payload: %s).",
+ version, name, gras_datadesc_get_name(payload_request),
+ gras_datadesc_get_name(payload_answer));
+
+ msgtype = xbt_new(s_gras_msgtype_t,1);
+ msgtype->name = (namev == name ? strdup(name) : namev);
+ msgtype->name_len = strlen(namev);
+ msgtype->version = version;
+ msgtype->kind = kind;
+ msgtype->ctn_type = payload_request;
+ msgtype->answer_type = payload_answer;
+
+ xbt_set_add(_gras_msgtype_set, (xbt_set_elm_t)msgtype,
+ &gras_msgtype_free);
+}
+
+
/** @brief declare a new message type of the given name. It only accepts the given datadesc as payload
*
* @param name: name as it should be used for logging messages (must be uniq)
*/
void gras_msgtype_declare(const char *name,
gras_datadesc_type_t payload) {
- gras_msgtype_declare_v(name, 0, payload);
+ gras_msgtype_declare_ext(name, 0, e_gras_msg_kind_oneway, payload, NULL);
}
+
+
/** @brief declare a new versionned message type of the given name and payload
*
* @param name: name as it should be used for logging messages (must be uniq)
short int version,
gras_datadesc_type_t payload) {
- xbt_error_t errcode;
- gras_msgtype_t msgtype;
- char *namev=make_namev(name,version);
-
- errcode = xbt_set_get_by_name(_gras_msgtype_set,
- namev,(xbt_set_elm_t*)&msgtype);
-
- if (errcode == no_error) {
- VERB2("Re-register version %d of message '%s' (same payload, ignored).",
- version, name);
- xbt_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));
-
- return ; /* do really ignore it */
-
- }
- xbt_assert_error(mismatch_error); /* expect this error */
- VERB3("Register version %d of message '%s' (payload: %s).",
- version, name, gras_datadesc_get_name(payload));
-
- msgtype = xbt_new(s_gras_msgtype_t,1);
- msgtype->name = (namev == name ? strdup(name) : namev);
- msgtype->name_len = strlen(namev);
- msgtype->version = version;
- msgtype->ctn_type = payload;
-
- xbt_set_add(_gras_msgtype_set, (xbt_set_elm_t)msgtype,
- &gras_msgtype_free);
+ gras_msgtype_declare_ext(name, version,
+ e_gras_msg_kind_oneway, payload, NULL);
}
-/** @brief retrive an existing message type from its name. */
+/** @brief retrieve an existing message type from its name. */
gras_msgtype_t gras_msgtype_by_name (const char *name) {
return gras_msgtype_by_namev(name,0);
}
-/** @brief retrive an existing message type from its name and version. */
+/** @brief retrieve an existing message type from its name and version. */
gras_msgtype_t gras_msgtype_by_namev(const char *name,
short int version) {
- gras_msgtype_t res;
-
- xbt_error_t errcode;
+ gras_msgtype_t res = NULL;
char *namev = make_namev(name,version);
+ xbt_ex_t e;
- errcode = xbt_set_get_by_name(_gras_msgtype_set, namev,
- (xbt_set_elm_t*)&res);
- if (errcode != no_error)
- res = NULL;
- if (!res)
- WARN1("msgtype_by_name(%s) returns NULL",namev);
+ TRY {
+ res = (gras_msgtype_t)xbt_set_get_by_name(_gras_msgtype_set, namev);
+ } CATCH(e) {
+ xbt_ex_free(e);
+ THROW1(not_found_error,0,"No registred message of that name: %s",name);
+ }
if (name != namev)
free(namev);
return res;
}
-
-/** \brief Send the data pointed by \a payload as a message of type
- * \a msgtype to the peer \a sock */
-xbt_error_t
-gras_msg_send(gras_socket_t sock,
- gras_msgtype_t msgtype,
- void *payload) {
-
- xbt_error_t errcode;
- static gras_datadesc_type_t string_type=NULL;
-
- if (!msgtype)
- RAISE0(mismatch_error,
- "Cannot send the NULL message (did msgtype_by_name fail?)");
-
- if (!string_type) {
- string_type = gras_datadesc_by_name("string");
- xbt_assert(string_type);
- }
-
- DEBUG3("send '%s' to %s:%d", msgtype->name,
- gras_socket_peer_name(sock),gras_socket_peer_port(sock));
- TRYOLD(gras_trp_chunk_send(sock, GRAS_header, 6));
-
- TRYOLD(gras_datadesc_send(sock, string_type, &msgtype->name));
- if (msgtype->ctn_type)
- TRYOLD(gras_datadesc_send(sock, msgtype->ctn_type, payload));
- TRYOLD(gras_trp_flush(sock));
-
- return no_error;
-}
-/*
- * receive the next message on the given socket.
- */
-xbt_error_t
-gras_msg_recv(gras_socket_t sock,
- gras_msgtype_t *msgtype,
- void **payload,
- int *payload_size) {
-
- xbt_error_t errcode;
- static gras_datadesc_type_t string_type=NULL;
- char header[6];
- int cpt;
- int r_arch;
- char *msg_name=NULL;
-
- xbt_assert1(!gras_socket_is_meas(sock),
- "Asked to receive a message on the measurement socket %p", sock);
- if (!string_type) {
- string_type=gras_datadesc_by_name("string");
- xbt_assert(string_type);
- }
-
- errcode=gras_trp_chunk_recv(sock, header, 6);
- if (errcode!=no_error)
- RAISE2(errcode,"Got '%s' while trying to get the mesage header on socket %p",
- xbt_error_name(errcode),sock);
- for (cpt=0; cpt<4; cpt++)
- if (header[cpt] != GRAS_header[cpt])
- RAISE2(mismatch_error,"Incoming bytes do not look like a GRAS message (header='%.4s' not '%.4s')",header,GRAS_header);
- if (header[4] != GRAS_header[4])
- 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));
-
- TRYOLD(gras_datadesc_recv(sock, string_type, r_arch, &msg_name));
- errcode = xbt_set_get_by_name(_gras_msgtype_set,
- msg_name,(xbt_set_elm_t*)msgtype);
- if (errcode != no_error)
- RAISE2(errcode,
- "Got error %s while retrieving the type associated to messages '%s'",
- xbt_error_name(errcode),msg_name);
- /* FIXME: Survive unknown messages */
- free(msg_name);
-
- if ((*msgtype)->ctn_type) {
- *payload_size=gras_datadesc_size((*msgtype)->ctn_type);
- xbt_assert2(*payload_size > 0,
- "%s %s",
- "Dynamic array as payload is forbided for now (FIXME?).",
- "Reference to dynamic array is allowed.");
- *payload = xbt_malloc(*payload_size);
- TRYOLD(gras_datadesc_recv(sock, (*msgtype)->ctn_type, r_arch, *payload));
- } else {
- *payload = NULL;
- *payload_size = 0;
- }
- return no_error;
+/** @brief retrieve an existing message type from its name and version. */
+gras_msgtype_t gras_msgtype_by_id(int id) {
+ return (gras_msgtype_t)xbt_set_get_by_id(_gras_msgtype_set, id);
}
/** \brief Waits for a message to come in over a given socket.
*
* @param timeout: How long should we wait for this message.
- * @param msgt_want: type of awaited msg
- * @param[out] expeditor: where to create a socket to answer the incomming message
- * @param[out] payload: where to write the payload of the incomming message
- * @return the error code (or no_error).
+ * @param msgt_want: type of awaited msg (or NULL if I'm enclined to accept any message)
+ * @param expe_want: awaited expeditot (match on hostname, not port; NULL if not relevant)
+ * @param filter: function returning true or false when passed a payload. Messages for which it returns false are not selected. (NULL if not relevant)
+ * @param filter_ctx: context passed as second argument of the filter (a pattern to match?)
+ * @param[out] msg_got: where to write the message we got
*
* Every message of another type received before the one waited will be queued
* and used by subsequent call to this function or gras_msg_handle().
*/
-xbt_error_t
-gras_msg_wait(double timeout,
- gras_msgtype_t msgt_want,
- gras_socket_t *expeditor,
- void *payload) {
- gras_msgtype_t msgt_got;
- void *payload_got;
- int payload_size_got;
- xbt_error_t errcode;
+void
+gras_msg_wait_ext(double timeout,
+
+ gras_msgtype_t msgt_want,
+ gras_socket_t expe_want,
+ gras_msg_filter_t filter,
+ void *filter_ctx,
+
+ gras_msg_t msg_got) {
+
+ s_gras_msg_t msg;
double start, now;
- gras_msg_procdata_t pd=(gras_msg_procdata_t)gras_libdata_get("gras_msg");
+ gras_msg_procdata_t pd=(gras_msg_procdata_t)gras_libdata_by_id(gras_msg_libdata_id);
int cpt;
- s_gras_msg_t msg;
- gras_socket_t expeditor_res = NULL;
-
- payload_got = NULL;
- if (!msgt_want)
- RAISE0(mismatch_error,
- "Cannot wait for the NULL message (did msgtype_by_name fail?)");
+ xbt_assert0(msgt_want,"Cannot wait for the NULL message");
+ xbt_assert0(msg_got,"msg_got is an output parameter");
VERB1("Waiting for message '%s'",msgt_want->name);
start = now = gras_os_time();
xbt_dynar_foreach(pd->msg_queue,cpt,msg){
- if (msg.type->code == msgt_want->code) {
- if (expeditor)
- *expeditor = msg.expeditor;
- memcpy(payload, msg.payload, msg.payload_size);
- free(msg.payload);
+ if ( ( !msgt_want || (msg.type->code == msgt_want->code))
+ && (!expe_want || (!strcmp( gras_socket_peer_name(msg.expe),
+ gras_socket_peer_name(expe_want))))
+ && (!filter || filter(&msg,filter_ctx))) {
+
+ memcpy(msg_got,&msg,sizeof(s_gras_msg_t));
xbt_dynar_cursor_rm(pd->msg_queue, &cpt);
VERB0("The waited message was queued");
- return no_error;
+ return;
}
}
while (1) {
- TRYOLD(gras_trp_select(timeout - now + start, &expeditor_res));
- TRYOLD(gras_msg_recv(expeditor_res, &msgt_got, &payload_got, &payload_size_got));
- if (msgt_got->code == msgt_want->code) {
- if (expeditor)
- *expeditor=expeditor_res;
- memcpy(payload, payload_got, payload_size_got);
- free(payload_got);
- VERB0("Got waited message");
- return no_error;
+ memset(&msg,sizeof(msg),0);
+
+ msg.expe = gras_trp_select(timeout ? timeout - now + start : 0);
+ gras_msg_recv(msg.expe, &msg);
+ DEBUG0("Got a message from the socket");
+
+ if ( ( !msgt_want || (msg.type->code == msgt_want->code))
+ && (!expe_want || (!strcmp( gras_socket_peer_name(msg.expe),
+ gras_socket_peer_name(expe_want))))
+ && (!filter || filter(&msg,filter_ctx))) {
+
+ memcpy(msg_got,&msg,sizeof(s_gras_msg_t));
+ DEBUG0("Message matches expectations. Use it.");
+ return;
}
+ DEBUG0("Message does not match expectations. Queue it.");
/* not expected msg type. Queue it for later */
- msg.expeditor = expeditor_res;
- msg.type = msgt_got;
- msg.payload = payload;
- msg.payload_size = payload_size_got;
xbt_dynar_push(pd->msg_queue,&msg);
now=gras_os_time();
- if (now - start + 0.001 < timeout) {
- RAISE1(timeout_error,"Timeout while waiting for msg %s",msgt_want->name);
+ if (now - start + 0.001 > timeout) {
+ THROW1(timeout_error, now-start+0.001-timeout,
+ "Timeout while waiting for msg %s",msgt_want->name);
}
}
- RAISE_IMPOSSIBLE;
+ THROW_IMPOSSIBLE;
+}
+/** \brief Waits for a message to come in over a given socket.
+ *
+ * @param timeout: How long should we wait for this message.
+ * @param msgt_want: type of awaited msg
+ * @param[out] expeditor: where to create a socket to answer the incomming message
+ * @param[out] payload: where to write the payload of the incomming message
+ * @return the error code (or no_error).
+ *
+ * Every message of another type received before the one waited will be queued
+ * and used by subsequent call to this function or gras_msg_handle().
+ */
+void
+gras_msg_wait(double timeout,
+ gras_msgtype_t msgt_want,
+ gras_socket_t *expeditor,
+ void *payload) {
+ s_gras_msg_t msg;
+
+ gras_msg_wait_ext(timeout,
+ msgt_want, NULL, NULL, NULL,
+ &msg);
+
+ if (msgt_want->ctn_type) {
+ xbt_assert1(payload,
+ "Message type '%s' convey a payload you must accept",
+ msgt_want->name);
+ } else {
+ xbt_assert1(!payload,
+ "No payload was declared for message type '%s'",
+ msgt_want->name);
+ }
+
+ if (payload) {
+ memcpy(payload,msg.payl,msg.payl_size);
+ free(msg.payl);
+ }
+
+ if (expeditor)
+ *expeditor = msg.expe;
}
+
+/** \brief Send the data pointed by \a payload as a message of type
+ * \a msgtype to the peer \a sock */
+void
+gras_msg_send(gras_socket_t sock,
+ gras_msgtype_t msgtype,
+ void *payload) {
+
+ if (msgtype->ctn_type) {
+ xbt_assert1(payload,
+ "Message type '%s' convey a payload you must provide",
+ msgtype->name);
+ } else {
+ xbt_assert1(!payload,
+ "No payload was declared for message type '%s'",
+ msgtype->name);
+ }
+
+ gras_msg_send_ext(sock, e_gras_msg_kind_oneway,0, msgtype, payload);
+}
+
+/** @brief Handle all messages arriving within the given period
+ *
+ * @param timeOut: How long to wait for incoming messages (in seconds)
+ * @return the error code (or no_error).
+ *
+ * Messages are dealed with just like gras_msg_handle() would do. The
+ * difference is that gras_msg_handle() handles at most one message (or wait up
+ * to timeout second when no message arrives) while this function handles any
+ * amount of messages, and lasts the given period in any case.
+ */
+void
+gras_msg_handleall(double period) {
+ xbt_ex_t e;
+ double begin=gras_os_time();
+ double now;
+
+ do {
+ now=gras_os_time();
+ TRY{
+ gras_msg_handle(period - now + begin);
+ } CATCH(e) {
+ if (e.category != timeout_error)
+ RETHROW0("Error while waiting for messages: %s");
+ xbt_ex_free(e);
+ }
+ } while (now - begin < period);
+}
/** @brief Handle an incomming message or timer (or wait up to \a timeOut seconds)
*
* @param timeOut: How long to wait for incoming messages (in seconds)
* @return the error code (or no_error).
*
- * Messages are passed to the callbacks.
+ * Messages are passed to the callbacks. See also gras_msg_handleall().
*/
-xbt_error_t
+void
gras_msg_handle(double timeOut) {
double untiltimer;
- xbt_error_t errcode;
- int cpt;
+ int cpt, ran_ok;
s_gras_msg_t msg;
- gras_socket_t expeditor;
- void *payload=NULL;
- int payload_size;
- gras_msgtype_t msgtype;
- gras_msg_procdata_t pd=(gras_msg_procdata_t)gras_libdata_get("gras_msg");
+ gras_msg_procdata_t pd=(gras_msg_procdata_t)gras_libdata_by_id(gras_msg_libdata_id);
gras_cblist_t *list=NULL;
gras_msg_cb_t cb;
+ s_gras_msg_cb_ctx_t ctx;
- int timerexpected;
+ int timerexpected, timeouted;
+ xbt_ex_t e;
VERB1("Handling message within the next %.2fs",timeOut);
untiltimer = gras_msg_timer_handle();
- DEBUG2("[%.0f] Next timer in %f sec", gras_os_time(), untiltimer);
+ DEBUG1("Next timer in %f sec", untiltimer);
if (untiltimer == 0.0) {
/* A timer was already elapsed and handled */
- return no_error;
+ return;
}
if (untiltimer != -1.0) {
timerexpected = 1;
}
/* get a message (from the queue or from the net) */
+ timeouted = 0;
if (xbt_dynar_length(pd->msg_queue)) {
DEBUG0("Get a message from the queue");
xbt_dynar_shift(pd->msg_queue,&msg);
- expeditor = msg.expeditor;
- msgtype = msg.type;
- payload = msg.payload;
- errcode = no_error;
} else {
- errcode = gras_trp_select(timeOut, &expeditor);
- if (errcode != no_error && errcode != timeout_error)
- return errcode;
- if (errcode == no_error) {
- errcode = gras_msg_recv(expeditor, &msgtype, &payload, &payload_size);
- if (errcode != no_error)
- RAISE2(errcode, "Error '%s' while receiving a message on select()ed socket %p",
- xbt_error_name(errcode),expeditor);
+ TRY {
+ msg.expe = gras_trp_select(timeOut);
+ } CATCH(e) {
+ if (e.category != timeout_error)
+ RETHROW;
+ xbt_ex_free(e);
+ timeouted = 1;
+ }
+
+ if (!timeouted) {
+ TRY {
+ /* FIXME: if not the right kind, queue it and recall ourself or goto >:-) */
+ gras_msg_recv(msg.expe, &msg);
+ DEBUG1("Received a msg from the socket kind:%s",
+ e_gras_msg_kind_names[msg.kind]);
+
+ } CATCH(e) {
+ RETHROW4("Error while receiving a message on select()ed socket %p to [%s]%s:%d: %s",
+ msg.expe,
+ gras_socket_peer_proc(msg.expe),gras_socket_peer_name(msg.expe),
+ gras_socket_peer_port(msg.expe));
+ }
}
}
- if (errcode == timeout_error ) {
+ if (timeouted) {
if (timerexpected) {
/* A timer elapsed before the arrival of any message even if we select()ed a bit */
untiltimer = gras_msg_timer_handle();
if (untiltimer == 0.0) {
- return no_error;
+ /* we served a timer, we're done */
+ return;
} else {
- xbt_assert1(untiltimer>0, "Negative timer (%f). I'm puzzeled", untiltimer);
+ xbt_assert1(untiltimer>0, "Negative timer (%f). I'm 'puzzeled'", untiltimer);
WARN1("No timer elapsed, in contrary to expectations (next in %f sec)",
untiltimer);
- return timeout_error;
+ THROW1(timeout_error,0,
+ "No timer elapsed, in contrary to expectations (next in %f sec)",
+ untiltimer);
}
} else {
/* select timeouted, and no timer elapsed. Nothing to do */
- return timeout_error;
+ THROW1(timeout_error, 0, "No new message or timer (delay was %f)",
+ timeOut);
}
}
/* A message was already there or arrived in the meanwhile. handle it */
xbt_dynar_foreach(pd->cbl_list,cpt,list) {
- if (list->id == msgtype->code) {
+ if (list->id == msg.type->code) {
break;
} else {
list=NULL;
}
}
if (!list) {
- INFO1("No callback for the incomming '%s' message. Discarded.",
- msgtype->name);
+ INFO3("No callback for the incomming '%s' message (from %s:%d). Discarded.",
+ msg.type->name,
+ gras_socket_peer_name(msg.expe),gras_socket_peer_port(msg.expe));
WARN0("FIXME: gras_datadesc_free not implemented => leaking the payload");
- return no_error;
+ return;
}
- xbt_dynar_foreach(list->cbs,cpt,cb) {
- VERB3("Use 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;
+ ctx.expeditor = msg.expe;
+ ctx.ID = msg.ID;
+ ctx.msgtype = msg.type;
+
+ switch (msg.kind) {
+ case e_gras_msg_kind_oneway:
+ case e_gras_msg_kind_rpccall:
+ ran_ok=0;
+ TRY {
+ xbt_dynar_foreach(list->cbs,cpt,cb) {
+ if (!ran_ok) {
+ VERB3("Use the callback #%d (@%p) for incomming msg %s",
+ cpt+1,cb,msg.type->name);
+ if ((*cb)(&ctx,msg.payl)) {
+ /* cb handled the message */
+ free(msg.payl);
+ ran_ok = 1;
+ }
+ }
+ }
+ } CATCH(e) {
+ free(msg.payl);
+ if (msg.type->kind == e_gras_msg_kind_rpccall) {
+ /* The callback raised an exception, propagate it on the network */
+ if (!e.remote) { /* the exception is born on this machine */
+ e.host = (char*)gras_os_myname();
+ xbt_ex_setup_backtrace(&e);
+ }
+ VERB4("Propagate %s exception from '%s' RPC cb back to %s:%d",
+ (e.remote ? "remote" : "local"),
+ msg.type->name,
+ gras_socket_peer_name(msg.expe),
+ gras_socket_peer_port(msg.expe));
+ gras_msg_send_ext(msg.expe, e_gras_msg_kind_rpcerror,
+ msg.ID, msg.type, &e);
+ xbt_ex_free(e);
+ ran_ok=1;
+ } else {
+ RETHROW0("Callback raised an exception: %s");
+ }
}
+ if (!ran_ok)
+ THROW1(mismatch_error,0,
+ "Message '%s' refused by all registered callbacks", msg.type->name);
+ /* FIXME: gras_datadesc_free not implemented => leaking the payload */
+ break;
+
+
+ case e_gras_msg_kind_rpcanswer:
+ INFO1("Unexpected RPC answer discarded (type: %s)", msg.type->name);
+ WARN0("FIXME: gras_datadesc_free not implemented => leaking the payload");
+ return;
+
+ case e_gras_msg_kind_rpcerror:
+ INFO1("Unexpected RPC error discarded (type: %s)", msg.type->name);
+ WARN0("FIXME: gras_datadesc_free not implemented => leaking the payload");
+ return;
+
+ default:
+ THROW1(unknown_error,0,
+ "Cannot handle messages of kind %d yet",msg.type->kind);
}
- INFO1("Message '%s' refused by all registered callbacks", msgtype->name);
- WARN0("FIXME: gras_datadesc_free not implemented => leaking the payload");
- return mismatch_error;
}
void
void
gras_cb_register(gras_msgtype_t msgtype,
gras_msg_cb_t cb) {
- gras_msg_procdata_t pd=(gras_msg_procdata_t)gras_libdata_get("gras_msg");
+ gras_msg_procdata_t pd=(gras_msg_procdata_t)gras_libdata_by_id(gras_msg_libdata_id);
gras_cblist_t *list=NULL;
int cpt;
gras_cb_unregister(gras_msgtype_t msgtype,
gras_msg_cb_t cb) {
- gras_msg_procdata_t pd=(gras_msg_procdata_t)gras_libdata_get("gras_msg");
+ gras_msg_procdata_t pd=(gras_msg_procdata_t)gras_libdata_by_id(gras_msg_libdata_id);
gras_cblist_t *list;
gras_msg_cb_t cb_cpt;
int cpt;
VERB1("Ignoring removal of unexisting callback to msg id %d",
msgtype->code);
}
+
+/** \brief Retrieve the expeditor of the message */
+gras_socket_t gras_msg_cb_ctx_from(gras_msg_cb_ctx_t ctx) {
+ return ctx->expeditor;
+}
