-/* $Id$ */
-
/* gras message exchanges */
-/* Copyright (c) 2003-2009. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
+ * 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 "xbt/socket.h"
#include "gras/Msg/msg_private.h"
#include "gras/Virtu/virtu_interface.h"
char _GRAS_header[6];
-const char *e_gras_msg_kind_names[e_gras_msg_kind_count]=
-{"UNKNOWN","ONEWAY","RPC call","RPC answer","RPC error"};
+const char *e_gras_msg_kind_names[e_gras_msg_kind_count] =
+ { "UNKNOWN", "ONEWAY", "RPC call", "RPC answer", "RPC error" };
/** \brief Waits for a message to come in over a given socket.
*/
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);
- unsigned int cpt;
-
- xbt_assert0(msg_got,"msg_got is an output parameter");
-
- start = gras_os_time();
- VERB2("Waiting for message '%s' for %fs",msgt_want?msgt_want->name:"(any)", timeout);
-
- 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 {
- xbt_queue_shift_timed(pd->msg_received,&msg,timeout ? timeout - now + start : 0);
- } 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;
+gras_msg_wait_ext_(double timeout,
+ gras_msgtype_t msgt_want,
+ xbt_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);
+ unsigned int cpt;
+
+ xbt_assert(msg_got, "msg_got is an output parameter");
+
+ start = gras_os_time();
+ XBT_VERB("Waiting for message '%s' for %fs",
+ msgt_want ? msgt_want->name : "(any)", timeout);
+
+ xbt_dynar_foreach(pd->msg_waitqueue, cpt, msg) {
+ if ((!msgt_want || (msg.type->code == msgt_want->code))
+ && (!expe_want || (!strcmp(xbt_socket_peer_name(msg.expe),
+ xbt_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);
+ XBT_VERB("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(xbt_socket_peer_name(msg.expe),
+ xbt_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);
+ XBT_VERB("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, 0, sizeof(msg));
+
+ TRY {
+ xbt_queue_shift_timed(pd->msg_received, &msg,
+ timeout ? timeout - now + start : 0);
+ }
+ 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;
+
+ XBT_DEBUG("Got a message from the socket");
+
+ if ((!msgt_want || (msg.type->code == msgt_want->code))
+ && (!expe_want || (!strcmp(xbt_socket_peer_name(msg.expe),
+ xbt_socket_peer_name(expe_want))))
+ && (!filter || filter(&msg, filter_ctx))) {
+
+ memcpy(msg_got, &msg, sizeof(s_gras_msg_t));
+ XBT_DEBUG("Message matches expectations. Use it.");
+ return;
+ }
+ XBT_DEBUG("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) {
+ THROWF(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.
* 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;
+gras_msg_wait_(double timeout,
+ gras_msgtype_t msgt_want,
+ xbt_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_assert(payload,
+ "Message type '%s' convey a payload that you must accept",
+ msgt_want->name);
+ } else {
+ xbt_assert(!payload,
+ "No payload was declared for message type '%s' (don't expect one)",
+ 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;
+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)
+ XBT_VERB("Got matching message (type=%s)", msg->type->name);
+ else
+ XBT_VERB("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.
*
* 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);
+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;
+
+ XBT_VERB("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_assert(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);
+void gras_msg_send_(xbt_socket_t sock, gras_msgtype_t msgtype,
+ void *payload)
+{
+
+ if (msgtype->ctn_type) {
+ xbt_assert(payload,
+ "Message type '%s' convey a payload you must provide",
+ msgtype->name);
+ } else {
+ xbt_assert(!payload,
+ "No payload was declared for message type '%s'",
+ msgtype->name);
+ }
+
+ XBT_DEBUG("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);
+ XBT_VERB("Sent a oneway message of type '%s'. Payload=%p",
+ msgtype->name, payload);
}
/** @brief Handle all messages arriving within the given period
* 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);
- }
- /* Epsilon to avoid numerical stability issues were the waited interval is so small that the global clock cannot notice the increment */
- } while (period - now + begin > 0);
+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)
+ RETHROWF("Error while waiting for messages: %s");
+ xbt_ex_free(e);
+ }
+ /* Epsilon to avoid numerical stability issues were the waited interval is so small that the global clock cannot notice the increment */
+ } while (period - now + begin > 0);
}
/** @brief Handle an incomming message or timer (or wait up to \a timeOut seconds)
*
* @sa gras_msg_handleall().
*/
-void
-gras_msg_handle(double timeOut) {
-
- double untiltimer;
-
- unsigned 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 {
- xbt_queue_shift_timed(pd->msg_received,&msg,timeOut);
- // msg.expe = gras_trp_select(timeOut);
- } CATCH(e) {
- if (e.category != timeout_error)
- RETHROW;
- DEBUG0("Damn. Timeout while getting a message from the queue");
- xbt_ex_free(e);
- timeouted = 1;
- }
- }
-
- 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);
- }
- INFO5("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));
- if (XBT_LOG_ISENABLED(gras_msg,xbt_log_priority_info))
- xbt_ex_display(&e);
- 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 {
- RETHROW4("Callback #%d (@%p) to message '%s' (payload size: %d) raised an exception: %s",
- cpt+1,cb,msg.type->name,msg.payl_size);
- }
- }
-
- xbt_assert1(! ctx.answer_due,
- "Bug in user code: RPC callback to message '%s' didn't call gras_msg_rpcreturn",msg.type->name);
- if (ctx.answer_due)
- CRITICAL1("BUGS BOTH IN USER CODE (RPC callback to message '%s' didn't call gras_msg_rpcreturn) "
- "AND IN SIMGRID (process wasn't killed by an assert)",msg.type->name);
- if (!ran_ok)
- THROW1(mismatch_error,0,
- "Message '%s' refused by all registered callbacks (maybe your callback misses a 'return 0' at the end)", msg.type->name);
- /* FIXME: gras_datadesc_free not implemented => leaking the payload */
- break;
-
-
- case e_gras_msg_kind_rpcanswer:
- INFO3("Unexpected RPC answer discarded (type: %s; from:%s:%d)", 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;
-
- case e_gras_msg_kind_rpcerror:
- INFO3("Unexpected RPC error discarded (type: %s; from:%s:%d)", 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;
-
- default:
- THROW1(unknown_error,0,
- "Cannot handle messages of kind %d yet",msg.type->kind);
- }
+void gras_msg_handle(volatile double timeOut)
+{
+
+ double untiltimer;
+
+ unsigned int cpt;
+ volatile int 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;
+
+ volatile int timerexpected, timeouted;
+ xbt_ex_t e;
+
+ XBT_VERB("Handling message within the next %.2fs", timeOut);
+
+ untiltimer = gras_msg_timer_handle();
+ XBT_DEBUG("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_is_empty(pd->msg_queue)) {
+ XBT_DEBUG("Get a message from the queue");
+ xbt_dynar_shift(pd->msg_queue, &msg);
+ } else {
+ TRY {
+ xbt_queue_shift_timed(pd->msg_received, &msg, timeOut);
+ // msg.expe = gras_trp_select(timeOut);
+ }
+ CATCH(e) {
+ if (e.category != timeout_error)
+ RETHROW;
+ XBT_DEBUG("Damn. Timeout while getting a message from the queue");
+ xbt_ex_free(e);
+ timeouted = 1;
+ }
+ }
+
+ 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_assert(untiltimer > 0, "Negative timer (%f). I'm 'puzzeled'",
+ untiltimer);
+ XBT_WARN
+ ("No timer elapsed, in contrary to expectations (next in %f sec)",
+ untiltimer);
+ THROWF(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 */
+ THROWF(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) {
+ XBT_INFO
+ ("No callback for message '%s' (type:%s) from %s:%d. Queue it for later gras_msg_wait() use.",
+ msg.type->name, e_gras_msg_kind_names[msg.kind],
+ xbt_socket_peer_name(msg.expe), xbt_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) {
+ volatile unsigned int cpt2 = cpt;
+ if (!ran_ok) {
+ XBT_DEBUG
+ ("Use the callback #%u (@%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;
+ }
+ }
+ cpt = cpt2;
+ }
+ }
+ 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);
+ }
+ XBT_VERB
+ ("Propagate %s exception ('%s') from '%s' RPC cb back to %s:%d",
+ (e.remote ? "remote" : "local"), e.msg, msg.type->name,
+ xbt_socket_peer_name(msg.expe),
+ xbt_socket_peer_port(msg.expe));
+ if (XBT_LOG_ISENABLED(gras_msg, xbt_log_priority_verbose))
+ xbt_ex_display(&e);
+ 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 {
+ RETHROWF
+ ("Callback #%u (@%p) to message '%s' (payload size: %d) raised an exception: %s",
+ cpt + 1, cb, msg.type->name, msg.payl_size);
+ }
+ }
+
+ xbt_assert(!ctx.answer_due,
+ "Bug in user code: RPC callback to message '%s' didn't call gras_msg_rpcreturn",
+ msg.type->name);
+ if (ctx.answer_due)
+ XBT_CRITICAL
+ ("BUGS BOTH IN USER CODE (RPC callback to message '%s' didn't call gras_msg_rpcreturn) "
+ "AND IN SIMGRID (process wasn't killed by an assert)",
+ msg.type->name);
+ if (!ran_ok)
+ THROWF(mismatch_error, 0,
+ "Message '%s' refused by all registered callbacks (maybe your callback misses a 'return 0' at the end)",
+ msg.type->name);
+ /* FIXME: xbt_datadesc_free not implemented => leaking the payload */
+ break;
+
+
+ case e_gras_msg_kind_rpcanswer:
+ XBT_INFO("Unexpected RPC answer discarded (type: %s; from:%s:%d)",
+ msg.type->name, xbt_socket_peer_name(msg.expe),
+ xbt_socket_peer_port(msg.expe));
+ XBT_WARN
+ ("FIXME: xbt_datadesc_free not implemented => leaking the payload");
+ return;
+
+ case e_gras_msg_kind_rpcerror:
+ XBT_INFO("Unexpected RPC error discarded (type: %s; from:%s:%d)",
+ msg.type->name, xbt_socket_peer_name(msg.expe),
+ xbt_socket_peer_port(msg.expe));
+ XBT_WARN
+ ("FIXME: xbt_datadesc_free not implemented => leaking the payload");
+ return;
+
+ default:
+ THROWF(unknown_error, 0,
+ "Cannot handle messages of kind %d yet", (int)msg.type->kind);
+ }
}
-
