X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/aeb67d26a90a4fbc05a2ee596c8f627bb7aa615b..f21c4fc3d7f78879f3ecac4dff751e4888dcac06:/src/msg/gos.c diff --git a/src/msg/gos.c b/src/msg/gos.c index 5e1a703053..899b135a5e 100644 --- a/src/msg/gos.c +++ b/src/msg/gos.c @@ -1,14 +1,12 @@ -/* $Id$ */ - -/* Copyright (c) 2002-2007 Arnaud Legrand. */ -/* Copyright (c) 2007 Bruno Donassolo. */ -/* All rights reserved. */ +/* Copyright (c) 2004, 2005, 2006, 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 "msg/private.h" +#include "private.h" #include "xbt/sysdep.h" +#include "mc/mc.h" #include "xbt/log.h" #include "mailbox.h" @@ -32,7 +30,7 @@ MSG_error_t MSG_get_errno(void) * This function is used for describing the behavior of an agent. It * takes only one parameter. * \param task a #m_task_t to execute on the location on which the - agent is running. + agent is running. * \return #MSG_FATAL if \a task is not properly initialized and * #MSG_OK otherwise. */ @@ -40,54 +38,72 @@ MSG_error_t MSG_task_execute(m_task_t task) { simdata_task_t simdata = NULL; m_process_t self = MSG_process_self(); - e_surf_action_state_t state = SURF_ACTION_NOT_IN_THE_SYSTEM; CHECK_HOST(); simdata = task->simdata; - xbt_assert1((!simdata->compute) - && (task->simdata->refcount == 1), - "This task is executed somewhere else. Go fix your code! %d", task->simdata->refcount); + + xbt_assert0(simdata->host_nb == 0, + "This is a parallel task. Go to hell."); + +#ifdef HAVE_TRACING + TRACE_msg_task_execute_start(task); +#endif + + xbt_assert1((!simdata->compute) && (task->simdata->refcount == 1), + "This task is executed somewhere else. Go fix your code! %d", + task->simdata->refcount); DEBUG1("Computing on %s", MSG_process_self()->simdata->m_host->name); + if (simdata->computation_amount == 0) { +#ifdef HAVE_TRACING + TRACE_msg_task_execute_end(task); +#endif + return MSG_OK; + } simdata->refcount++; - SIMIX_mutex_lock(simdata->mutex); simdata->compute = - SIMIX_action_execute(SIMIX_host_self(), task->name, - simdata->computation_amount); - SIMIX_action_set_priority(simdata->compute, simdata->priority); + SIMIX_req_host_execute(task->name, SIMIX_host_self(), + simdata->computation_amount); + SIMIX_req_host_execution_set_priority(simdata->compute, simdata->priority); +#ifdef HAVE_TRACING + SIMIX_req_set_category(simdata->compute, task->category); +#endif - /* changed to waiting action since we are always waiting one action (execute, communicate or sleep) */ self->simdata->waiting_action = simdata->compute; - SIMIX_register_action_to_condition(simdata->compute, simdata->cond); - do { - SIMIX_cond_wait(simdata->cond, simdata->mutex); - state = SIMIX_action_get_state(simdata->compute); - } while (state == SURF_ACTION_READY || state == SURF_ACTION_RUNNING); - SIMIX_unregister_action_to_condition(simdata->compute, simdata->cond); + SIMIX_req_host_execution_wait(simdata->compute); self->simdata->waiting_action = NULL; - SIMIX_mutex_unlock(simdata->mutex); simdata->refcount--; - if (SIMIX_action_get_state(task->simdata->compute) == SURF_ACTION_DONE) { + DEBUG2("Execution task '%s' finished in state %d", task->name, SIMIX_req_host_execution_get_state(task->simdata->compute)); + if (SIMIX_req_host_execution_get_state(task->simdata->compute) == SIMIX_DONE) { /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */ - SIMIX_action_destroy(task->simdata->compute); + SIMIX_req_host_execution_destroy(task->simdata->compute); simdata->computation_amount = 0.0; simdata->comm = NULL; simdata->compute = NULL; +#ifdef HAVE_TRACING + TRACE_msg_task_execute_end(task); +#endif MSG_RETURN(MSG_OK); - } else if (SIMIX_host_get_state(SIMIX_host_self()) == 0) { + } else if (SIMIX_req_host_get_state(SIMIX_host_self()) == 0) { /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */ - SIMIX_action_destroy(task->simdata->compute); + SIMIX_req_host_execution_destroy(task->simdata->compute); simdata->comm = NULL; simdata->compute = NULL; +#ifdef HAVE_TRACING + TRACE_msg_task_execute_end(task); +#endif MSG_RETURN(MSG_HOST_FAILURE); } else { /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */ - SIMIX_action_destroy(task->simdata->compute); + SIMIX_req_host_execution_destroy(task->simdata->compute); simdata->comm = NULL; simdata->compute = NULL; +#ifdef HAVE_TRACING + TRACE_msg_task_execute_end(task); +#endif MSG_RETURN(MSG_TASK_CANCELLED); } } @@ -96,18 +112,18 @@ MSG_error_t MSG_task_execute(m_task_t task) * \brief Creates a new #m_task_t (a parallel one....). * * A constructor for #m_task_t taking six arguments and returning the - corresponding object. + corresponding object. * \param name a name for the object. It is for user-level information - and can be NULL. + and can be NULL. * \param host_nb the number of hosts implied in the parallel task. * \param host_list an array of \p host_nb m_host_t. * \param computation_amount an array of \p host_nb - doubles. computation_amount[i] is the total number of operations - that have to be performed on host_list[i]. + doubles. computation_amount[i] is the total number of operations + that have to be performed on host_list[i]. * \param communication_amount an array of \p host_nb* \p host_nb doubles. * \param data a pointer to any data may want to attach to the new - object. It is for user-level information and can be NULL. It can - be retrieved with the function \ref MSG_task_get_data. + object. It is for user-level information and can be NULL. It can + be retrieved with the function \ref MSG_task_get_data. * \see m_task_t * \return The new corresponding object. */ @@ -129,8 +145,6 @@ MSG_parallel_task_create(const char *name, int host_nb, /* Simulator Data */ simdata->computation_amount = 0; simdata->message_size = 0; - simdata->cond = SIMIX_cond_init(); - simdata->mutex = SIMIX_mutex_init(); simdata->compute = NULL; simdata->comm = NULL; simdata->rate = -1.0; @@ -154,7 +168,6 @@ MSG_error_t MSG_parallel_task_execute(m_task_t task) { simdata_task_t simdata = NULL; m_process_t self = MSG_process_self(); - e_surf_action_state_t state = SURF_ACTION_NOT_IN_THE_SYSTEM; CHECK_HOST(); simdata = task->simdata; @@ -163,53 +176,48 @@ MSG_error_t MSG_parallel_task_execute(m_task_t task) && (task->simdata->refcount == 1), "This task is executed somewhere else. Go fix your code!"); - xbt_assert0(simdata->host_nb, "This is not a parallel task. Go to hell."); + xbt_assert0(simdata->host_nb, + "This is not a parallel task. Go to hell."); - DEBUG1("Computing on %s", MSG_process_self()->simdata->m_host->name); + DEBUG1("Parallel computing on %s", MSG_process_self()->simdata->m_host->name); simdata->refcount++; - SIMIX_mutex_lock(simdata->mutex); simdata->compute = - SIMIX_action_parallel_execute(task->name, simdata->host_nb, - simdata->host_list, simdata->comp_amount, + SIMIX_req_host_parallel_execute(task->name, simdata->host_nb, + simdata->host_list, + simdata->comp_amount, simdata->comm_amount, 1.0, -1.0); + DEBUG1("Parallel execution action created: %p", simdata->compute); self->simdata->waiting_action = simdata->compute; - SIMIX_register_action_to_condition(simdata->compute, simdata->cond); - do { - SIMIX_cond_wait(simdata->cond, simdata->mutex); - state = SIMIX_action_get_state(task->simdata->compute); - } while (state == SURF_ACTION_READY || state == SURF_ACTION_RUNNING); - - SIMIX_unregister_action_to_condition(simdata->compute, simdata->cond); + SIMIX_req_host_execution_wait(simdata->compute); self->simdata->waiting_action = NULL; + DEBUG2("Finished waiting for execution of action %p, state = %d", simdata->compute, SIMIX_req_host_execution_get_state(task->simdata->compute)); - SIMIX_mutex_unlock(simdata->mutex); simdata->refcount--; - if (SIMIX_action_get_state(task->simdata->compute) == SURF_ACTION_DONE) { + if (SIMIX_req_host_execution_get_state(task->simdata->compute) == SIMIX_DONE) { /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */ - SIMIX_action_destroy(task->simdata->compute); + SIMIX_req_host_execution_destroy(task->simdata->compute); simdata->computation_amount = 0.0; simdata->comm = NULL; simdata->compute = NULL; MSG_RETURN(MSG_OK); - } else if (SIMIX_host_get_state(SIMIX_host_self()) == 0) { + } else if (SIMIX_req_host_get_state(SIMIX_host_self()) == 0) { /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */ - SIMIX_action_destroy(task->simdata->compute); + SIMIX_req_host_execution_destroy(task->simdata->compute); simdata->comm = NULL; simdata->compute = NULL; MSG_RETURN(MSG_HOST_FAILURE); } else { /* action ended, set comm and compute = NULL, the actions is already destroyed in the main function */ - SIMIX_action_destroy(task->simdata->compute); + SIMIX_req_host_execution_destroy(task->simdata->compute); simdata->comm = NULL; simdata->compute = NULL; MSG_RETURN(MSG_TASK_CANCELLED); } - } @@ -222,77 +230,55 @@ MSG_error_t MSG_parallel_task_execute(m_task_t task) */ MSG_error_t MSG_process_sleep(double nb_sec) { - smx_action_t act_sleep; - m_process_t proc = MSG_process_self(); - e_surf_action_state_t state = SURF_ACTION_NOT_IN_THE_SYSTEM; - smx_mutex_t mutex; - smx_cond_t cond; + e_smx_state_t state; + /*m_process_t proc = MSG_process_self();*/ + +#ifdef HAVE_TRACING + TRACE_msg_process_sleep_in(MSG_process_self()); +#endif /* create action to sleep */ - act_sleep = - SIMIX_action_sleep(SIMIX_process_get_host(proc->simdata->s_process), - nb_sec); - - mutex = SIMIX_mutex_init(); - SIMIX_mutex_lock(mutex); - - /* create conditional and register action to it */ - cond = SIMIX_cond_init(); - - proc->simdata->waiting_action = act_sleep; - SIMIX_register_action_to_condition(act_sleep, cond); - do { - SIMIX_cond_wait(cond, mutex); - state = SIMIX_action_get_state(act_sleep); - } while (state == SURF_ACTION_READY || state == SURF_ACTION_RUNNING); - proc->simdata->waiting_action = NULL; - SIMIX_unregister_action_to_condition(act_sleep, cond); - SIMIX_mutex_unlock(mutex); - - /* remove variables */ - SIMIX_cond_destroy(cond); - SIMIX_mutex_destroy(mutex); - - if (SIMIX_action_get_state(act_sleep) == SURF_ACTION_DONE) { - if (SIMIX_host_get_state(SIMIX_host_self()) == SURF_RESOURCE_OFF) { - SIMIX_action_destroy(act_sleep); + state = SIMIX_req_process_sleep(nb_sec); + + /*proc->simdata->waiting_action = act_sleep; + + FIXME: check if not setting the waiting_action breaks something on msg + + proc->simdata->waiting_action = NULL;*/ + + if (state == SIMIX_DONE) { + if (SIMIX_req_host_get_state(SIMIX_host_self()) == SURF_RESOURCE_OFF) { +#ifdef HAVE_TRACING + TRACE_msg_process_sleep_out(MSG_process_self()); +#endif MSG_RETURN(MSG_HOST_FAILURE); } } else { - SIMIX_action_destroy(act_sleep); +#ifdef HAVE_TRACING + TRACE_msg_process_sleep_out(MSG_process_self()); +#endif MSG_RETURN(MSG_HOST_FAILURE); } - - SIMIX_action_destroy(act_sleep); +#ifdef HAVE_TRACING + TRACE_msg_process_sleep_out(MSG_process_self()); +#endif MSG_RETURN(MSG_OK); } -/** \ingroup msg_gos_functions - * \brief Return the number of MSG tasks currently running on - * the host of the current running process. - */ -static int MSG_get_msgload(void) -{ - xbt_die("not implemented yet"); - return 0; -} - - - /** \ingroup msg_gos_functions * \brief Listen on \a channel and waits for receiving a task from \a host. * * It takes three parameters. * \param task a memory location for storing a #m_task_t. It will - hold a task when this function will return. Thus \a task should not - be equal to \c NULL and \a *task should be equal to \c NULL. If one of - those two condition does not hold, there will be a warning message. + hold a task when this function will return. Thus \a task should not + be equal to \c NULL and \a *task should be equal to \c NULL. If one of + those two condition does not hold, there will be a warning message. * \param channel the channel on which the agent should be - listening. This value has to be >=0 and < than the maximal - number of channels fixed with MSG_set_channel_number(). + listening. This value has to be >=0 and < than the maximal + number of channels fixed with MSG_set_channel_number(). * \param host the host that is to be watched. * \return #MSG_FATAL if \a task is equal to \c NULL, #MSG_WARNING - if \a *task is not equal to \c NULL, and #MSG_OK otherwise. + if \a *task is not equal to \c NULL, and #MSG_OK otherwise. */ MSG_error_t MSG_task_get_from_host(m_task_t * task, m_channel_t channel, m_host_t host) @@ -305,12 +291,12 @@ MSG_task_get_from_host(m_task_t * task, m_channel_t channel, m_host_t host) * * It takes two parameters. * \param task a memory location for storing a #m_task_t. It will - hold a task when this function will return. Thus \a task should not - be equal to \c NULL and \a *task should be equal to \c NULL. If one of - those two condition does not hold, there will be a warning message. + hold a task when this function will return. Thus \a task should not + be equal to \c NULL and \a *task should be equal to \c NULL. If one of + those two condition does not hold, there will be a warning message. * \param channel the channel on which the agent should be - listening. This value has to be >=0 and < than the maximal - number of channels fixed with MSG_set_channel_number(). + listening. This value has to be >=0 and < than the maximal + number of channels fixed with MSG_set_channel_number(). * \return #MSG_FATAL if \a task is equal to \c NULL, #MSG_WARNING * if \a *task is not equal to \c NULL, and #MSG_OK otherwise. */ @@ -324,18 +310,18 @@ MSG_error_t MSG_task_get(m_task_t * task, m_channel_t channel) * * It takes three parameters. * \param task a memory location for storing a #m_task_t. It will - hold a task when this function will return. Thus \a task should not - be equal to \c NULL and \a *task should be equal to \c NULL. If one of - those two condition does not hold, there will be a warning message. + hold a task when this function will return. Thus \a task should not + be equal to \c NULL and \a *task should be equal to \c NULL. If one of + those two condition does not hold, there will be a warning message. * \param channel the channel on which the agent should be - listening. This value has to be >=0 and < than the maximal - number of channels fixed with MSG_set_channel_number(). + listening. This value has to be >=0 and < than the maximal + number of channels fixed with MSG_set_channel_number(). * \param max_duration the maximum time to wait for a task before giving - up. In such a case, #MSG_TRANSFER_FAILURE will be returned, \a task - will not be modified and will still be - equal to \c NULL when returning. + up. In such a case, #MSG_TRANSFER_FAILURE will be returned, \a task + will not be modified and will still be + equal to \c NULL when returning. * \return #MSG_FATAL if \a task is equal to \c NULL, #MSG_WARNING - if \a *task is not equal to \c NULL, and #MSG_OK otherwise. + if \a *task is not equal to \c NULL, and #MSG_OK otherwise. */ MSG_error_t MSG_task_get_with_timeout(m_task_t * task, m_channel_t channel, @@ -358,12 +344,14 @@ MSG_task_get_ext(m_task_t * task, m_channel_t channel, double timeout, channel); return - MSG_mailbox_get_task_ext(MSG_mailbox_get_by_channel - (MSG_host_self(), channel), task, host, timeout); + MSG_mailbox_get_task_ext(MSG_mailbox_get_by_channel + (MSG_host_self(), channel), task, host, + timeout); } MSG_error_t -MSG_task_receive_from_host(m_task_t * task, const char *alias, m_host_t host) +MSG_task_receive_from_host(m_task_t * task, const char *alias, + m_host_t host) { return MSG_task_receive_ext(task, alias, -1, host); } @@ -384,10 +372,199 @@ MSG_error_t MSG_task_receive_ext(m_task_t * task, const char *alias, double timeout, m_host_t host) { - return MSG_mailbox_get_task_ext(MSG_mailbox_get_by_alias(alias), task, host, - timeout); + DEBUG1 + ("MSG_task_receive_ext: Trying to receive a message on mailbox '%s'", + alias); + return MSG_mailbox_get_task_ext(MSG_mailbox_get_by_alias(alias), task, + host, timeout); +} + +/** \ingroup msg_gos_functions + * \brief Send a task on a channel. + * + * This function takes two parameter. + * \param task a #m_task_t to send on another location. + * \param alias the channel on which the agent should put this + task. This value has to be >=0 and < than the maximal number of + channels fixed with MSG_set_channel_number(). + * \return the msg_comm_t communication. + */ +msg_comm_t MSG_task_isend(m_task_t task, const char *alias) +{ + simdata_task_t t_simdata = NULL; + m_process_t process = MSG_process_self(); + msg_mailbox_t mailbox = MSG_mailbox_get_by_alias(alias); + + CHECK_HOST(); + + /* FIXME: these functions are not tracable */ + + /* Prepare the task to send */ + t_simdata = task->simdata; + t_simdata->sender = process; + t_simdata->source = MSG_host_self(); + + xbt_assert0(t_simdata->refcount == 1, + "This task is still being used somewhere else. You cannot send it now. Go fix your code!"); + + t_simdata->refcount++; + msg_global->sent_msg++; + process->simdata->waiting_task = task; + + /* Send it by calling SIMIX network layer */ + + return SIMIX_req_comm_isend(mailbox, t_simdata->message_size, + t_simdata->rate, task, sizeof(void *), + &t_simdata->comm); +} + +/** \ingroup msg_gos_functions + * \brief Listen on a channel for receiving a task from an asynchronous communication. + * + * It takes two parameters. + * \param task a memory location for storing a #m_task_t. + * \param alias the channel on which the agent should be + listening. This value has to be >=0 and < than the maximal + number of channels fixed with MSG_set_channel_number(). + * \return the msg_comm_t communication. + */ +msg_comm_t MSG_task_irecv(m_task_t * task, const char *alias) +{ + smx_rdv_t rdv = MSG_mailbox_get_by_alias(alias); + + CHECK_HOST(); + + /* FIXME: these functions are not tracable */ + + /* Sanity check */ + xbt_assert0(task, "Null pointer for the task storage"); + + if (*task) + CRITICAL0 + ("MSG_task_get() was asked to write in a non empty task struct."); + + /* Try to receive it by calling SIMIX network layer */ + return SIMIX_req_comm_irecv(rdv, task, NULL); +} + +/** \ingroup msg_gos_functions + * \brief Test the status of a communication. + * + * It takes one parameter. + * \param comm the communication to test. + * \return the status of the communication: + * TRUE : the communication is completed + * FALSE: the communication is incompleted + * If the status is FALSE, don't forget to use MSG_process_sleep() after the test. + */ +int MSG_comm_test(msg_comm_t comm) +{ + return SIMIX_req_comm_test(comm); +} + +/** \ingroup msg_gos_functions + * \brief After received TRUE to MSG_comm_test(), the communication must be destroyed. + * + * It takes one parameter. + * \param comm the communication to destroy. + */ +void MSG_comm_destroy(msg_comm_t comm) +{ + if (SIMIX_req_comm_get_src_proc(comm) != SIMIX_process_self()) { + m_task_t task; + task = (m_task_t) SIMIX_req_comm_get_src_buff(comm); + task->simdata->refcount--; + } + SIMIX_req_comm_destroy(comm); +} + +/** \ingroup msg_gos_functions + * \brief Wait for the completion of a communication. + * + * It takes two parameters. + * \param comm the communication to wait. + * \param timeout Wait until the communication terminates or the timeout occurs + * \return MSG_error_t + */ +MSG_error_t MSG_comm_wait(msg_comm_t comm, double timeout) +{ + xbt_ex_t e; + MSG_error_t res = MSG_OK; + TRY { + SIMIX_req_comm_wait(comm, timeout); + + if (SIMIX_req_comm_get_src_proc(comm) != SIMIX_process_self()) { + m_task_t task; + task = (m_task_t) SIMIX_req_comm_get_src_buff(comm); + task->simdata->refcount--; + } + + /* FIXME: these functions are not tracable */ + } + CATCH(e) { + switch (e.category) { + case host_error: + res = MSG_HOST_FAILURE; + break; + case network_error: + res = MSG_TRANSFER_FAILURE; + break; + case timeout_error: + res = MSG_TIMEOUT; + break; + default: + xbt_die(bprintf("Unhandled SIMIX network exception: %s", e.msg)); + } + xbt_ex_free(e); + } + return res; +} + +/** \ingroup msg_gos_functions +* \brief This function is called by a sender and permit to wait for each communication +* +* It takes three parameters. +* \param comm a vector of communication +* \param nb_elem is the size of the comm vector +* \param timeout for each call of MSG_comm_wait +*/ +void MSG_comm_waitall(msg_comm_t * comm, int nb_elem, double timeout) +{ + int i = 0; + for (i = 0; i < nb_elem; i++) { + MSG_comm_wait(comm[i], timeout); + } } +/** \ingroup msg_gos_functions +* \brief This function wait for the first completed communication +* +* It takes on parameter. +* \param comms a vector of communication +* \return the position of the completed communication from the xbt_dynar_t. +*/ +int MSG_comm_waitany(xbt_dynar_t comms) +{ + return SIMIX_req_comm_waitany(comms); +} + +/** \ingroup msg_gos_functions +* \brief This function wait for the first completed communication +* +* It takes on parameter. +* \param comms a vector of communication +* \return the position of the completed communication, if any, or -1 if none was completed +*/ +int MSG_comm_testany(xbt_dynar_t comms) +{ + return SIMIX_req_comm_testany(comms); +} + +m_task_t MSG_comm_get_task(msg_comm_t comm) +{ + xbt_assert0(comm, "Invalid parameters"); + return (m_task_t) SIMIX_req_comm_get_src_buff(comm); +} /** \ingroup msg_gos_functions * \brief Put a task on a channel of an host and waits for the end of the @@ -396,19 +573,19 @@ MSG_task_receive_ext(m_task_t * task, const char *alias, double timeout, * This function is used for describing the behavior of an agent. It * takes three parameter. * \param task a #m_task_t to send on another location. This task - will not be usable anymore when the function will return. There is - no automatic task duplication and you have to save your parameters - before calling this function. Tasks are unique and once it has been - sent to another location, you should not access it anymore. You do - not need to call MSG_task_destroy() but to avoid using, as an - effect of inattention, this task anymore, you definitely should - renitialize it with #MSG_TASK_UNINITIALIZED. Note that this task - can be transfered iff it has been correctly created with - MSG_task_create(). + will not be usable anymore when the function will return. There is + no automatic task duplication and you have to save your parameters + before calling this function. Tasks are unique and once it has been + sent to another location, you should not access it anymore. You do + not need to call MSG_task_destroy() but to avoid using, as an + effect of inattention, this task anymore, you definitely should + renitialize it with #MSG_TASK_UNINITIALIZED. Note that this task + can be transfered iff it has been correctly created with + MSG_task_create(). * \param dest the destination of the message * \param channel the channel on which the agent should put this - task. This value has to be >=0 and < than the maximal number of - channels fixed with MSG_set_channel_number(). + task. This value has to be >=0 and < than the maximal number of + channels fixed with MSG_set_channel_number(). * \return #MSG_FATAL if \a task is not properly initialized and * #MSG_OK otherwise. Returns #MSG_HOST_FAILURE if the host on which * this function was called was shut down. Returns @@ -441,43 +618,45 @@ MSG_task_put_bounded(m_task_t task, m_host_t dest, m_channel_t channel, * This function is used for describing the behavior of an agent. It * takes four parameter. * \param task a #m_task_t to send on another location. This task - will not be usable anymore when the function will return. There is - no automatic task duplication and you have to save your parameters - before calling this function. Tasks are unique and once it has been - sent to another location, you should not access it anymore. You do - not need to call MSG_task_destroy() but to avoid using, as an - effect of inattention, this task anymore, you definitely should - renitialize it with #MSG_TASK_UNINITIALIZED. Note that this task - can be transfered iff it has been correctly created with - MSG_task_create(). + will not be usable anymore when the function will return. There is + no automatic task duplication and you have to save your parameters + before calling this function. Tasks are unique and once it has been + sent to another location, you should not access it anymore. You do + not need to call MSG_task_destroy() but to avoid using, as an + effect of inattention, this task anymore, you definitely should + renitialize it with #MSG_TASK_UNINITIALIZED. Note that this task + can be transfered iff it has been correctly created with + MSG_task_create(). * \param dest the destination of the message * \param channel the channel on which the agent should put this - task. This value has to be >=0 and < than the maximal number of - channels fixed with MSG_set_channel_number(). + task. This value has to be >=0 and < than the maximal number of + channels fixed with MSG_set_channel_number(). * \param timeout the maximum time to wait for a task before giving - up. In such a case, #MSG_TRANSFER_FAILURE will be returned, \a task - will not be modified + up. In such a case, #MSG_TRANSFER_FAILURE will be returned, \a task + will not be modified * \return #MSG_FATAL if \a task is not properly initialized and - #MSG_OK otherwise. Returns #MSG_HOST_FAILURE if the host on which - this function was called was shut down. Returns - #MSG_TRANSFER_FAILURE if the transfer could not be properly done - (network failure, dest failure, timeout...) +#MSG_OK otherwise. Returns #MSG_HOST_FAILURE if the host on which +this function was called was shut down. Returns +#MSG_TRANSFER_FAILURE if the transfer could not be properly done +(network failure, dest failure, timeout...) */ MSG_error_t -MSG_task_put_with_timeout(m_task_t task, m_host_t dest, m_channel_t channel, - double timeout) +MSG_task_put_with_timeout(m_task_t task, m_host_t dest, + m_channel_t channel, double timeout) { xbt_assert1((channel >= 0) && (channel < msg_global->max_channel), "Invalid channel %d", channel); + DEBUG1("MSG_task_put_with_timout: Trying to send a task to '%s'", dest->name); return - MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_channel(dest, channel), - task, timeout); + MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_channel + (dest, channel), task, timeout); } MSG_error_t MSG_task_send(m_task_t task, const char *alias) { + DEBUG1("MSG_task_send: Trying to send a message on mailbox '%s'", alias); return MSG_task_send_with_timeout(task, alias, -1); } @@ -491,10 +670,11 @@ MSG_task_send_bounded(m_task_t task, const char *alias, double maxrate) MSG_error_t -MSG_task_send_with_timeout(m_task_t task, const char *alias, double timeout) +MSG_task_send_with_timeout(m_task_t task, const char *alias, + double timeout) { - return MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_alias(alias), task, - timeout); + return MSG_mailbox_put_with_timeout(MSG_mailbox_get_by_alias(alias), + task, timeout); } int MSG_task_listen(const char *alias) @@ -509,8 +689,8 @@ int MSG_task_listen(const char *alias) * * It takes one parameter. * \param channel the channel on which the agent should be - listening. This value has to be >=0 and < than the maximal - number of channels fixed with MSG_set_channel_number(). + listening. This value has to be >=0 and < than the maximal + number of channels fixed with MSG_set_channel_number(). * \return 1 if there is a pending communication and 0 otherwise */ int MSG_task_Iprobe(m_channel_t channel) @@ -522,22 +702,22 @@ int MSG_task_Iprobe(m_channel_t channel) CHECK_HOST(); return - !MSG_mailbox_is_empty(MSG_mailbox_get_by_channel - (MSG_host_self(), channel)); + !MSG_mailbox_is_empty(MSG_mailbox_get_by_channel + (MSG_host_self(), channel)); } /** \ingroup msg_gos_functions * \brief Return the number of tasks waiting to be received on a \a - channel and sent by \a host. + channel and sent by \a host. * * It takes two parameters. * \param channel the channel on which the agent should be - listening. This value has to be >=0 and < than the maximal - number of channels fixed with MSG_set_channel_number(). + listening. This value has to be >=0 and < than the maximal + number of channels fixed with MSG_set_channel_number(). * \param host the host that is to be watched. * \return the number of tasks waiting to be received on \a channel - and sent by \a host. + and sent by \a host. */ int MSG_task_probe_from_host(int channel, m_host_t host) { @@ -548,9 +728,9 @@ int MSG_task_probe_from_host(int channel, m_host_t host) CHECK_HOST(); return - MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_channel - (MSG_host_self(), channel), - host); + MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_channel + (MSG_host_self(), channel), + host); } @@ -559,8 +739,8 @@ int MSG_task_listen_from_host(const char *alias, m_host_t host) CHECK_HOST(); return - MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_alias(alias), - host); + MSG_mailbox_get_count_host_waiting_tasks(MSG_mailbox_get_by_alias + (alias), host); } /** \ingroup msg_gos_functions @@ -568,8 +748,8 @@ int MSG_task_listen_from_host(const char *alias, m_host_t host) * * It takes one parameter. * \param channel the channel on which the agent should be - listening. This value has to be >=0 and < than the maximal - number of channels fixed with MSG_set_channel_number(). + listening. This value has to be >=0 and < than the maximal + number of channels fixed with MSG_set_channel_number(). * \return -1 if there is no pending communication and the PID of the process who sent it otherwise */ int MSG_task_probe_from(m_channel_t channel) @@ -597,169 +777,9 @@ int MSG_task_listen_from(const char *alias) CHECK_HOST(); - if (NULL == (task = MSG_mailbox_get_head(MSG_mailbox_get_by_alias(alias)))) + if (NULL == + (task = MSG_mailbox_get_head(MSG_mailbox_get_by_alias(alias)))) return -1; return MSG_process_get_PID(task->simdata->sender); } - -/** \ingroup msg_gos_functions - * \brief Wait for at most \a max_duration second for a task reception - on \a channel. - - * \a PID is updated with the PID of the first process that triggered this event if any. - * - * It takes three parameters: - * \param channel the channel on which the agent should be - listening. This value has to be >=0 and < than the maximal. - number of channels fixed with MSG_set_channel_number(). - * \param PID a memory location for storing an int. - * \param timeout the maximum time to wait for a task before - giving up. In the case of a reception, *\a PID will be updated - with the PID of the first process to send a task. - * \return #MSG_HOST_FAILURE if the host is shut down in the meantime - and #MSG_OK otherwise. - */ -MSG_error_t -MSG_channel_select_from(m_channel_t channel, double timeout, int *PID) -{ - m_host_t h = NULL; - simdata_host_t h_simdata = NULL; - m_task_t t; - int first_time = 1; - smx_cond_t cond; - msg_mailbox_t mailbox; - - xbt_assert1((channel >= 0) - && (channel < msg_global->max_channel), "Invalid channel %d", - channel); - - if (PID) { - *PID = -1; - } - - if (timeout == 0.0) { - *PID = MSG_task_probe_from(channel); - MSG_RETURN(MSG_OK); - } else { - CHECK_HOST(); - h = MSG_host_self(); - h_simdata = h->simdata; - - mailbox = MSG_mailbox_get_by_channel(MSG_host_self(), channel); - - while (MSG_mailbox_is_empty(mailbox)) { - if (timeout > 0) { - if (!first_time) { - MSG_RETURN(MSG_OK); - } - } - - SIMIX_mutex_lock(h_simdata->mutex); - - xbt_assert1(!MSG_mailbox_get_cond(mailbox), - "A process is already blocked on this channel %d", channel); - - cond = SIMIX_cond_init(); - - MSG_mailbox_set_cond(mailbox, cond); - - if (timeout > 0) { - SIMIX_cond_wait_timeout(cond, h_simdata->mutex, timeout); - } else { - SIMIX_cond_wait(cond, h_simdata->mutex); - } - - SIMIX_cond_destroy(cond); - SIMIX_mutex_unlock(h_simdata->mutex); - - if (SIMIX_host_get_state(h_simdata->smx_host) == 0) { - MSG_RETURN(MSG_HOST_FAILURE); - } - - MSG_mailbox_set_cond(mailbox, NULL); - first_time = 0; - } - - if (NULL == (t = MSG_mailbox_get_head(mailbox))) - MSG_RETURN(MSG_OK); - - - if (PID) { - *PID = MSG_process_get_PID(t->simdata->sender); - } - - MSG_RETURN(MSG_OK); - } -} - - -MSG_error_t MSG_alias_select_from(const char *alias, double timeout, int *PID) -{ - m_host_t h = NULL; - simdata_host_t h_simdata = NULL; - m_task_t t; - int first_time = 1; - smx_cond_t cond; - msg_mailbox_t mailbox; - - if (PID) { - *PID = -1; - } - - if (timeout == 0.0) { - *PID = MSG_task_listen_from(alias); - MSG_RETURN(MSG_OK); - } else { - CHECK_HOST(); - h = MSG_host_self(); - h_simdata = h->simdata; - - DEBUG2("Probing on alias %s (%s)", alias, h->name); - - mailbox = MSG_mailbox_get_by_alias(alias); - - while (MSG_mailbox_is_empty(mailbox)) { - if (timeout > 0) { - if (!first_time) { - MSG_RETURN(MSG_OK); - } - } - - SIMIX_mutex_lock(h_simdata->mutex); - - xbt_assert1(!MSG_mailbox_get_cond(mailbox), - "A process is already blocked on this alias %s", alias); - - cond = SIMIX_cond_init(); - - MSG_mailbox_set_cond(mailbox, cond); - - if (timeout > 0) { - SIMIX_cond_wait_timeout(cond, h_simdata->mutex, timeout); - } else { - SIMIX_cond_wait(cond, h_simdata->mutex); - } - - SIMIX_cond_destroy(cond); - SIMIX_mutex_unlock(h_simdata->mutex); - - if (SIMIX_host_get_state(h_simdata->smx_host) == 0) { - MSG_RETURN(MSG_HOST_FAILURE); - } - - MSG_mailbox_set_cond(mailbox, NULL); - first_time = 0; - } - - if (NULL == (t = MSG_mailbox_get_head(mailbox))) - MSG_RETURN(MSG_OK); - - - if (PID) { - *PID = MSG_process_get_PID(t->simdata->sender); - } - - MSG_RETURN(MSG_OK); - } -}