+++ /dev/null
-/* $Id$ */
-
-/* messaging - Function related to messaging (code shared between RL and SG)*/
-
-/* Copyright (c) 2003, 2004 Martin Quinson. All rights reserved. */
-
-/* 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/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 *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->msg_waitqueue = 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);
- res->msg_to_receive_queue = xbt_fifo_new();
- res->msg_to_receive_queue_meas = xbt_fifo_new();
-
- return (void*)res;
-}
-
-/*
- * Freeing procdata for this module
- */
-static void gras_msg_procdata_free(void *data) {
- gras_msg_procdata_t res = (gras_msg_procdata_t)data;
-
- xbt_dynar_free(&( res->msg_queue ));
- xbt_dynar_free(&( res->msg_waitqueue ));
- xbt_dynar_free(&( res->cbl_list ));
- xbt_dynar_free(&( res->timers ));
- xbt_fifo_free( res->msg_to_receive_queue );
- xbt_fifo_free( res->msg_to_receive_queue_meas );
-
- free(res->name);
- free(res);
-}
-
-/*
- * Module registration
- */
-int gras_msg_libdata_id;
-void gras_msg_register() {
- gras_msg_libdata_id = gras_procdata_add("gras_msg",gras_msg_procdata_new, gras_msg_procdata_free);
-}
-
-/*
- * Initialize this submodule.
- */
-void gras_msg_init(void) {
- /* only initialize once */
- if (_gras_msgtype_set != NULL)
- return;
-
- VERB0("Initializing Msg");
-
- _gras_msgtype_set = xbt_set_new();
-
- memcpy(_GRAS_header,"GRAS", 4);
- _GRAS_header[4]=GRAS_PROTOCOL_VERSION;
- _GRAS_header[5]=(char)GRAS_THISARCH;
-
- gras_msg_ctx_mallocator =
- xbt_mallocator_new(1000,
- gras_msg_ctx_mallocator_new_f,
- gras_msg_ctx_mallocator_free_f,
- gras_msg_ctx_mallocator_reset_f);
-}
-
-/*
- * Finalize the msg module
- */
-void
-gras_msg_exit(void) {
- VERB0("Exiting Msg");
- xbt_set_free(&_gras_msgtype_set);
-
- xbt_mallocator_free(gras_msg_ctx_mallocator);
-}
-
-/*
- * Reclamed memory
- */
-void gras_msgtype_free(void *t) {
- gras_msgtype_t msgtype=(gras_msgtype_t)t;
- if (msgtype) {
- free(msgtype->name);
- free(msgtype);
- }
-}
-/**
- * Dump all declared message types (debugging purpose)
- */
-void gras_msgtype_dumpall(void) {
- xbt_set_cursor_t cursor;
- gras_msgtype_t msgtype=NULL;
-
- INFO0("Dump of all registered messages:");
- xbt_set_foreach(_gras_msgtype_set, cursor, msgtype) {
- INFO6(" Message name: %s (v%d) %s; %s%s%s",
- msgtype->name, msgtype->version, e_gras_msg_kind_names[msgtype->kind],
- gras_datadesc_get_name(msgtype->ctn_type),
- (msgtype->kind==e_gras_msg_kind_rpccall ? " -> ":""),
- (msgtype->kind==e_gras_msg_kind_rpccall ? gras_datadesc_get_name(msgtype->answer_type) : ""));
- }
-}
-
-
-/**
- * make_namev:
- *
- * Returns the versionned name of the message. If the version is 0, that's
- * the name unchanged. Pay attention to this before free'ing the result.
- */
-static char *make_namev(const char *name, short int ver) {
- char *namev;
-
- if (!ver)
- return (char *)name;
-
- namev = (char*)xbt_malloc(strlen(name)+2+3+1);
-
- if (namev)
- sprintf(namev,"%s_v%d",name,ver);
-
- 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)
- * @param payload: datadescription of the payload
- */
-void gras_msgtype_declare(const char *name,
- gras_datadesc_type_t 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)
- * @param version: something like versionning symbol
- * @param payload: datadescription of the payload
- *
- * Registers a message to the GRAS mechanism. Use this version instead of
- * gras_msgtype_declare when you change the semantic or syntax of a message and
- * want your programs to be able to deal with both versions. Internally, each
- * will be handled as an independent message type, so you can register
- * differents for each of them.
- */
-void
-gras_msgtype_declare_v(const char *name,
- short int version,
- gras_datadesc_type_t payload) {
-
- gras_msgtype_declare_ext(name, version,
- e_gras_msg_kind_oneway, payload, NULL);
-}
-
-/** @brief retrieve an existing message type from its name (raises an exception if it does not exist). */
-gras_msgtype_t gras_msgtype_by_name (const char *name) {
- return gras_msgtype_by_namev(name,0);
-}
-/** @brief retrieve an existing message type from its name (or NULL if it does not exist). */
-gras_msgtype_t gras_msgtype_by_name_or_null (const char *name) {
- xbt_ex_t e;
- gras_msgtype_t res = NULL;
-
- TRY {
- res = gras_msgtype_by_namev(name,0);
- } CATCH(e) {
- res = NULL;
- xbt_ex_free(e);
- }
- return res;
-}
-
-/** @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 = NULL;
- char *namev = make_namev(name,version);
- volatile int found=0;
- xbt_ex_t e;
-
- TRY {
- res = (gras_msgtype_t)xbt_set_get_by_name(_gras_msgtype_set, namev);
- found=1;
- } CATCH(e) {
- xbt_ex_free(e);
- }
- if (!found)
- THROW1(not_found_error,0,"No registred message of that name: %s",name);
-
- if (name != namev)
- free(namev);
-
- return res;
-}
-/** @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 (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().
- */
-
-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_by_id(gras_msg_libdata_id);
- int cpt;
-
- xbt_assert0(msg_got,"msg_got is an output parameter");
-
- start = gras_os_time();
- VERB1("Waiting for message '%s'",msgt_want?msgt_want->name:"(any)");
-
- xbt_dynar_foreach(pd->msg_waitqueue,cpt,msg){
- 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_waitqueue, &cpt);
- VERB0("The waited message was queued");
- return;
- }
- }
-
- xbt_dynar_foreach(pd->msg_queue,cpt,msg){
- 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;
- }
- }
-
- while (1) {
- int need_restart;
- xbt_ex_t e;
-
- restart_receive: /* Goto here when the receive of a message failed */
- need_restart=0;
- now=gras_os_time();
- memset(&msg,sizeof(msg),0);
-
- TRY {
- msg.expe = gras_trp_select(timeout ? timeout - now + start : 0);
- gras_msg_recv(msg.expe, &msg);
- } CATCH(e) {
- if (e.category == system_error &&
- !strncmp("Socket closed by remote side",e.msg,
- strlen("Socket closed by remote side"))) {
- xbt_ex_free(e);
- need_restart=1;
- } else {
- RETHROW;
- }
- }
- if (need_restart)
- goto restart_receive;
-
- 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 */
- xbt_dynar_push(pd->msg_queue,&msg);
-
- now=gras_os_time();
- if (now - start + 0.001 > timeout) {
- THROW1(timeout_error, now-start+0.001-timeout,
- "Timeout while waiting for msg '%s'",
- msgt_want?msgt_want->name:"(any)");
- }
- }
-
- 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;
-}
-
-static int gras_msg_wait_or_filter(gras_msg_t msg, void *ctx) {
- xbt_dynar_t dyn=(xbt_dynar_t)ctx;
- int res = xbt_dynar_member(dyn,msg->type);
- if (res)
- VERB1("Got matching message (type=%s)",msg->type->name);
- else
- VERB0("Got message not matching our expectations");
- return res;
-}
-/** \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: a dynar containing all accepted message type
- * @param[out] ctx: the context of received message (in case it's a RPC call we want to answer to)
- * @param[out] msgt_got: indice in the dynar of the type of the received message
- * @param[out] payload: where to write the payload of the incomming message
- * @return the error code (or no_error).
- *
- * Every message of a type not in the accepted list received before the one
- * waited will be queued and used by subsequent call to this function or
- * gras_msg_handle().
- *
- * If you are interested in the context, pass the address of a s_gras_msg_cb_ctx_t variable.
- */
-void gras_msg_wait_or(double timeout,
- xbt_dynar_t msgt_want,
- gras_msg_cb_ctx_t *ctx,
- int *msgt_got,
- void *payload) {
- s_gras_msg_t msg;
-
- VERB1("Wait %f seconds for several message types",timeout);
- gras_msg_wait_ext_(timeout,
- NULL, NULL,
- &gras_msg_wait_or_filter, (void*)msgt_want,
- &msg);
-
- if (msg.type->ctn_type) {
- xbt_assert1(payload,
- "Message type '%s' convey a payload you must accept",
- msg.type->name);
- } /* don't check the other side since some of the types may have a payload */
-
- if (payload && msg.type->ctn_type) {
- memcpy(payload,msg.payl,msg.payl_size);
- free(msg.payl);
- }
-
- if (ctx)
- *ctx=gras_msg_cb_ctx_new(msg.expe, msg.type, msg.ID,
- (msg.kind == e_gras_msg_kind_rpccall), 60);
-
- if (msgt_got)
- *msgt_got = xbt_dynar_search(msgt_want,msg.type);
-}
-
-
-/** \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);
- }
-
- DEBUG2("Send a oneway message of type '%s'. Payload=%p",
- msgtype->name,payload);
- gras_msg_send_ext(sock, e_gras_msg_kind_oneway,0, msgtype, payload);
- VERB2("Sent a oneway message of type '%s'. Payload=%p",
- msgtype->name,payload);
-}
-
-/** @brief Handle all messages arriving within the given period
- *
- * @param period: How long to wait for incoming messages (in seconds)
- *
- * 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{
- if (period - now + begin > 0)
- 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. See also gras_msg_handleall().
- */
-void
-gras_msg_handle(double timeOut) {
-
- double untiltimer;
-
- int cpt;
- int volatile ran_ok;
-
- s_gras_msg_t 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, timeouted;
- xbt_ex_t e;
-
- VERB1("Handling message within the next %.2fs",timeOut);
-
- untiltimer = gras_msg_timer_handle();
- DEBUG1("Next timer in %f sec", untiltimer);
- if (untiltimer == 0.0) {
- /* A timer was already elapsed and handled */
- return;
- }
- if (untiltimer != -1.0) {
- timerexpected = 1;
- timeOut = MIN(timeOut, untiltimer);
- } else {
- timerexpected = 0;
- }
-
- /* 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);
- } else {
- 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 (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) {
- /* we served a timer, we're done */
- return;
- } else {
- xbt_assert1(untiltimer>0, "Negative timer (%f). I'm 'puzzeled'", untiltimer);
- WARN1("No timer elapsed, in contrary to expectations (next in %f sec)",
- untiltimer);
- 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 */
- 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 == msg.type->code) {
- break;
- } else {
- list=NULL;
- }
- }
- if (!list) {
- INFO3("No callback for message '%s' from %s:%d. Queue it for later gras_msg_wait() use.",
- msg.type->name,
- gras_socket_peer_name(msg.expe),gras_socket_peer_port(msg.expe));
- xbt_dynar_push(pd->msg_waitqueue,&msg);
- return; /* FIXME: maybe we should call ourselves again until the end of the timer or a proper msg is got */
- }
-
- ctx.expeditor = msg.expe;
- ctx.ID = msg.ID;
- ctx.msgtype = msg.type;
- ctx.answer_due = (msg.kind == e_gras_msg_kind_rpccall);
-
- 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) {
- DEBUG4("Use the callback #%d (@%p) for incomming msg %s (payload_size=%d)",
- cpt+1,cb,msg.type->name,msg.payl_size);
- 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) {
- char *old_file=e.file;
- /* The callback raised an exception, propagate it on the network */
- if (!e.remote) {
- /* Make sure we reduce the file name to its basename to avoid issues in tests */
- char *new_file=strrchr(e.file,'/');
- if (new_file)
- e.file = new_file;
- /* the exception is born on this machine */
- e.host = (char*)gras_os_myname();
- xbt_ex_setup_backtrace(&e);
- }
- VERB5("Propagate %s exception ('%s') from '%s' RPC cb back to %s:%d",
- (e.remote ? "remote" : "local"),
- e.msg,
- 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);
- e.file=old_file;
- xbt_ex_free(e);
- ctx.answer_due = 0;
- ran_ok=1;
- } else {
- RETHROW0("Callback raised an exception: %s");
- }
- }
- xbt_assert0(!(ctx.answer_due),
- "RPC callback didn't call gras_msg_rpcreturn");
-
- 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);
- }
-
-}
-
-void
-gras_cbl_free(void *data){
- gras_cblist_t *list=*(void**)data;
- if (list) {
- xbt_dynar_free(&( list->cbs ));
- free(list);
- }
-}
-
-/** \brief Bind the given callback to the given message type
- *
- * Several callbacks can be attached to a given message type. The lastly added one will get the message first, and
- * if it returns a non-null value, the message will be passed to the second one.
- * And so on until one of the callbacks accepts the message.
- */
-void
-gras_cb_register_(gras_msgtype_t msgtype,
- gras_msg_cb_t cb) {
- gras_msg_procdata_t pd=(gras_msg_procdata_t)gras_libdata_by_id(gras_msg_libdata_id);
- 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) */
- xbt_dynar_foreach(pd->cbl_list,cpt,list) {
- if (list->id == msgtype->code) {
- break;
- } else {
- list=NULL;
- }
- }
- if (!list) {
- /* First cb? Create room */
- list = xbt_new(gras_cblist_t,1);
- list->id = msgtype->code;
- list->cbs = xbt_dynar_new(sizeof(gras_msg_cb_t), NULL);
- xbt_dynar_push(pd->cbl_list,&list);
- }
-
- /* Insert the new one into the set */
- xbt_dynar_insert_at(list->cbs,0,&cb);
-}
-
-/** \brief Unbind the given callback from the given message type */
-void
-gras_cb_unregister_(gras_msgtype_t msgtype,
- gras_msg_cb_t cb) {
-
- 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;
- int found = 0;
-
- /* search the list of cb for this message on this host */
- xbt_dynar_foreach(pd->cbl_list,cpt,list) {
- if (list->id == msgtype->code) {
- break;
- } else {
- list=NULL;
- }
- }
-
- /* Remove it from the set */
- if (list) {
- xbt_dynar_foreach(list->cbs,cpt,cb_cpt) {
- if (cb == cb_cpt) {
- xbt_dynar_cursor_rm(list->cbs, &cpt);
- found = 1;
- }
- }
- }
- if (!found)
- 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;
-}
-/* \brief Creates a new message exchange context (user should never have to) */
-gras_msg_cb_ctx_t gras_msg_cb_ctx_new(gras_socket_t expe,
- gras_msgtype_t msgtype,
- unsigned long int ID,
- int answer_due,
- double timeout) {
- gras_msg_cb_ctx_t res=xbt_new(s_gras_msg_cb_ctx_t,1);
- res->expeditor = expe;
- res->msgtype = msgtype;
- res->ID = ID;
- res->timeout = timeout;
- res->answer_due = answer_due;
-
- return res;
-}
-/* \brief Frees a message exchange context
- *
- * This function is mainly useful with \ref gras_msg_wait_or, ie seldom.
- */
-void gras_msg_cb_ctx_free(gras_msg_cb_ctx_t ctx) {
- free(ctx);
-}
