X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/f0b96348dd4b21ba428435c0eb021077134d0810..8f9f22a96a9349e7a1e2bea57ab8cd1361b93a8a:/include/simgrid/msg.h diff --git a/include/simgrid/msg.h b/include/simgrid/msg.h index 796e26b436..46b6e67943 100644 --- a/include/simgrid/msg.h +++ b/include/simgrid/msg.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2004-2018. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2004-2019. 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. */ @@ -7,16 +7,25 @@ #define SIMGRID_MSG_H #include +#include +#include #include #include #include +#include #include +#include #include #include #include -#include -#include -#include +#include + +#ifndef MIN +#define MIN(a, b) ((a) < (b) ? (a) : (b)) +#endif +#ifndef MAX +#define MAX(a, b) ((a) > (b) ? (a) : (b)) +#endif #ifdef __cplusplus #include @@ -24,17 +33,44 @@ namespace simgrid { namespace msg { class Comm; +class Task; } } typedef simgrid::msg::Comm sg_msg_Comm; +/** @brief Task datatype. + * + * Since most scheduling algorithms rely on a concept of task that can be either computed locally or + * transferred on another processor, it seems to be the right level of abstraction for our purposes. + * A task may then be defined by a computing amount, a message size and + * some private data. + */ +typedef simgrid::msg::Task* msg_task_t; #else typedef struct msg_Comm sg_msg_Comm; +typedef struct msg_Task* msg_task_t; #endif -SG_BEGIN_DECL() +#ifdef __cplusplus +extern "C" { +#endif + +/** @brief Return code of most MSG functions */ +/* Keep these code as binary values: java bindings manipulate | of these values */ +typedef enum { + MSG_OK = 0, /**< @brief Everything is right. Keep on going this way ! */ + MSG_TIMEOUT = 1, /**< @brief nothing good happened before the timer you provided elapsed */ + MSG_TRANSFER_FAILURE = 2, /**< @brief There has been a problem during you task + transfer. Either the network is down or the remote host has been + shutdown. */ + MSG_HOST_FAILURE = 4, /**< @brief System shutdown. The host on which you are + running has just been rebooted. Free your datastructures and + return now !*/ + MSG_TASK_CANCELED = 8 /**< @brief Canceled task. This task has been canceled by somebody!*/ +} msg_error_t; /* *************************** Network Zones ******************************** */ #define msg_as_t msg_netzone_t /* portability macro */ + typedef sg_netzone_t msg_netzone_t; XBT_PUBLIC msg_netzone_t MSG_zone_get_root(); @@ -46,16 +82,33 @@ XBT_PUBLIC void MSG_zone_set_property_value(msg_netzone_t zone, const char* name XBT_PUBLIC void MSG_zone_get_hosts(msg_netzone_t zone, xbt_dynar_t whereto); /* ******************************** Hosts ************************************ */ +/** @brief Host datatype. + * + * A location (or host) is any possible place where a process may run. Thus it is represented as a + * physical resource with computing capabilities, some mailboxes to enable running process to + * communicate with remote ones, and some private data that can be only accessed by local process. + */ typedef sg_host_t msg_host_t; -XBT_PUBLIC size_t MSG_get_host_number(); +/** @brief Finds a msg_host_t using its name. */ XBT_PUBLIC sg_host_t MSG_get_host_by_name(const char* name); +/** @brief Finds a msg_host_t using its name. */ XBT_PUBLIC sg_host_t MSG_host_by_name(const char* name); +/** @brief Returns the amount of host found in the platform */ +XBT_PUBLIC size_t MSG_get_host_number(); +/** @brief Returns a dynar with all existing hosts + * + * The host order in the returned array is generally different from the host creation/declaration order in the XML + * platform (we use a hash table internally). + */ XBT_PUBLIC xbt_dynar_t MSG_hosts_as_dynar(); +/** @brief Returns the name of this host */ XBT_PUBLIC const char* MSG_host_get_name(sg_host_t host); +/** @brief Returns the user data of this host */ XBT_PUBLIC void* MSG_host_get_data(sg_host_t host); +/** @brief Sets the user data of this host */ XBT_PUBLIC void MSG_host_set_data(sg_host_t host, void* data); XBT_PUBLIC xbt_dict_t MSG_host_get_mounted_storage_list(sg_host_t host); XBT_PUBLIC xbt_dynar_t MSG_host_get_attached_storage_lists(sg_host_t host); @@ -65,24 +118,32 @@ XBT_PUBLIC int MSG_host_get_core_number(sg_host_t host); XBT_PUBLIC int MSG_host_get_nb_pstates(sg_host_t host); XBT_PUBLIC int MSG_host_get_pstate(sg_host_t host); XBT_PUBLIC void MSG_host_set_pstate(sg_host_t host, int pstate); +/** @brief Start the host if it is off + * + * See also #MSG_host_is_on() to test the current state of the host and @ref SURF_plugin_energy + * for more info on DVFS. + */ XBT_PUBLIC void MSG_host_on(sg_host_t h); +/** @brief Stop the host if it is on + * + * See also MSG_host_is_on() to test the current state of the host and @ref SURF_plugin_energy + * for more info on DVFS. + */ XBT_PUBLIC void MSG_host_off(sg_host_t h); XBT_PUBLIC int MSG_host_is_on(sg_host_t h); -XBT_PUBLIC int MSG_host_is_off(sg_host_t h); +XBT_ATTRIB_DEPRECATED_v325("Please use !MSG_host_is_on()") XBT_PUBLIC int MSG_host_is_off(sg_host_t h); XBT_PUBLIC xbt_dict_t MSG_host_get_properties(sg_host_t host); XBT_PUBLIC const char* MSG_host_get_property_value(sg_host_t host, const char* name); XBT_PUBLIC void MSG_host_set_property_value(sg_host_t host, const char* name, const char* value); XBT_PUBLIC void MSG_host_get_process_list(sg_host_t host, xbt_dynar_t whereto); +/** @brief Return the location on which the current process is executed */ XBT_PUBLIC sg_host_t MSG_host_self(); +XBT_PUBLIC double MSG_host_get_load(sg_host_t host); /* ******************************** VMs ************************************* */ typedef sg_vm_t msg_vm_t; -XBT_ATTRIB_DEPRECATED_v322("Use sg_vm_create_migratable() from the live migration plugin: " - "v3.22 will drop MSG_vm_create() completely.") XBT_PUBLIC sg_vm_t - MSG_vm_create(sg_host_t ind_pm, const char* name, int coreAmount, int ramsize, int mig_netspeed, int dp_intensity); - XBT_PUBLIC msg_vm_t MSG_vm_create_core(msg_host_t pm, const char* name); XBT_PUBLIC msg_vm_t MSG_vm_create_multicore(msg_host_t pm, const char* name, int coreAmount); @@ -118,10 +179,23 @@ XBT_PUBLIC sg_size_t MSG_storage_read(msg_storage_t storage, sg_size_t size); XBT_PUBLIC sg_size_t MSG_storage_write(msg_storage_t storage, sg_size_t size); /* ******************************** Actor/process *************************** */ +/** Processes are independent agents that can do stuff on their own. + * They are in charge of executing your code interacting with the simulated world. + * A process may be defined as a code with some private data. + * Processes must be located on hosts (#msg_host_t), and they exchange data by sending tasks (#msg_task_t) + * that are similar to envelops containing data. + * + * @hideinitializer + */ typedef sg_actor_t msg_process_t; XBT_PUBLIC int MSG_process_get_PID(msg_process_t process); XBT_PUBLIC int MSG_process_get_PPID(msg_process_t process); +/** @brief Return a process from its PID (or NULL if not found). + * + * Note that the PID are unique in the whole simulation, not only on a given host. + */ +XBT_PUBLIC sg_actor_t MSG_process_from_PID(int pid); XBT_PUBLIC const char* MSG_process_get_name(msg_process_t process); XBT_PUBLIC sg_host_t MSG_process_get_host(msg_process_t process); @@ -133,73 +207,65 @@ XBT_PUBLIC void MSG_process_suspend(msg_process_t process); XBT_PUBLIC void MSG_process_resume(msg_process_t process); XBT_PUBLIC int MSG_process_is_suspended(msg_process_t process); XBT_PUBLIC void MSG_process_restart(msg_process_t process); +/** @brief Sets the "auto-restart" flag of the process. + * + * If the flag is set, the process will be automatically restarted when its host comes back up. + */ +XBT_PUBLIC void MSG_process_auto_restart_set(msg_process_t process, int auto_restart); +/** @brief Indicates that this process should not prevent the simulation from ending + * + * SimGrid simulations run until all non-daemon processes are stopped. + */ XBT_PUBLIC void MSG_process_daemonize(msg_process_t process); +/** @brief Imediately changes the host on which this process runs */ XBT_PUBLIC void MSG_process_migrate(msg_process_t process, msg_host_t host); +/** @brief Wait for the completion of a process. + * + * @param process the process to wait for + * @param timeout wait until the process is over, or the timeout occurs + */ XBT_PUBLIC void MSG_process_join(msg_process_t process, double timeout); +/** @brief Kills a process */ XBT_PUBLIC void MSG_process_kill(msg_process_t process); +/** @brief Kill all running process */ +XBT_PUBLIC void MSG_process_killall(); +/** @brief Specifies the time at which the process should be automatically killed */ XBT_PUBLIC void MSG_process_set_kill_time(msg_process_t process, double kill_time); +/** @brief Yield the current actor; let the other actors execute first */ +XBT_PUBLIC void MSG_process_yield(); +/*** @brief Sleep for the specified number of seconds */ +XBT_PUBLIC msg_error_t MSG_process_sleep(double nb_sec); +XBT_PUBLIC msg_process_t MSG_process_self(); +XBT_PUBLIC aid_t MSG_process_self_PID(); +XBT_PUBLIC aid_t MSG_process_self_PPID(); +XBT_PUBLIC const char* MSG_process_self_name(); -/* ******************************** File ************************************ */ -typedef sg_file_t msg_file_t; -XBT_PUBLIC_DATA int sg_storage_max_file_descriptors; - -/** - * \brief @brief Communication action. - * \ingroup msg_task_usage +/** @brief Object representing an ongoing communication between processes. * - * Object representing an ongoing communication between processes. Such beast is usually obtained by using #MSG_task_isend, #MSG_task_irecv or friends. + * \rst + * Such beast is usually obtained by using :cpp:func:`MSG_task_isend`, :cpp:func:`MSG_task_irecv` or friends. + * \endrst */ typedef sg_msg_Comm* msg_comm_t; /* ******************************** Task ************************************ */ -typedef struct s_simdata_task_t* simdata_task_t; - -typedef struct msg_task { - char* name; /**< @brief task name if any */ - simdata_task_t simdata; /**< @brief simulator data */ - void* data; /**< @brief user data */ - long long int counter; /* task unique identifier for instrumentation */ - char* category; /* task category for instrumentation */ -} s_msg_task_t; - -/** @brief Task datatype. - @ingroup m_task_management - - A task may then be defined by a computing - amount, a message size and some private - data. - */ - -typedef struct msg_task* msg_task_t; -/** \brief Default value for an uninitialized #msg_task_t. - \ingroup m_task_management -*/ +/** @brief Default value for an uninitialized #msg_task_t. */ #define MSG_TASK_UNINITIALIZED NULL -/** @brief Return code of most MSG functions - @ingroup msg_simulation - @{ */ -/* Keep these code as binary values: java bindings manipulate | of these values */ -typedef enum { - MSG_OK = 0, /**< @brief Everything is right. Keep on going this way ! */ - MSG_TIMEOUT = 1, /**< @brief nothing good happened before the timer you provided elapsed */ - MSG_TRANSFER_FAILURE = 2, /**< @brief There has been a problem during you task - transfer. Either the network is down or the remote host has been - shutdown. */ - MSG_HOST_FAILURE = 4, /**< @brief System shutdown. The host on which you are - running has just been rebooted. Free your datastructures and - return now !*/ - MSG_TASK_CANCELED = 8 /**< @brief Canceled task. This task has been canceled by somebody!*/ -} msg_error_t; -/** @} */ - /************************** Global ******************************************/ +/** @brief set a configuration variable + * + * Do --help on any simgrid binary to see the list of currently existing configuration variables, and see Section @ref + * options. + * + * Example: + * MSG_config("host/model","ptask_L07"); + */ XBT_PUBLIC void MSG_config(const char* key, const char* value); -/** \ingroup msg_simulation - * \brief Initialize the MSG internal data. - * \hideinitializer +/** @brief Initialize the MSG internal data. + * @hideinitializer * * It also check that the link-time and compile-time versions of SimGrid do * match, so you should use this version instead of the #MSG_init_nocheck @@ -207,24 +273,46 @@ XBT_PUBLIC void MSG_config(const char* key, const char* value); * * We allow to link against compiled versions that differ in the patch level. */ -#define MSG_init(argc,argv) do { \ - sg_version_check(SIMGRID_VERSION_MAJOR,SIMGRID_VERSION_MINOR,SIMGRID_VERSION_PATCH);\ - MSG_init_nocheck(argc,argv); \ +#define MSG_init(argc, argv) \ + do { \ + sg_version_check(SIMGRID_VERSION_MAJOR, SIMGRID_VERSION_MINOR, SIMGRID_VERSION_PATCH); \ + MSG_init_nocheck(argc, argv); \ } while (0) XBT_PUBLIC void MSG_init_nocheck(int* argc, char** argv); +/** @brief Launch the MSG simulation */ XBT_PUBLIC msg_error_t MSG_main(); +/** @brief Registers the main function of a process in a global table. + * + * This table is then used by #MSG_launch_application. + * @param name the reference name of the function. + * @param code the function (must have the same prototype than the main function of any C program: int ..(int argc, char + * *argv[])) + */ XBT_PUBLIC void MSG_function_register(const char* name, xbt_main_func_t code); +/** @brief Registers a code function as being the default value. + * + * This function will get used by MSG_launch_application() when there is no registered function of the requested name + * in. + * + * @param code the function (must have the same prototype than the main function of any C program: int ..(int argc, char + * *argv[])) + */ XBT_PUBLIC void MSG_function_register_default(xbt_main_func_t code); +/** @brief Creates a new platform, including hosts, links and the routing_table */ XBT_PUBLIC void MSG_create_environment(const char* file); +/** @brief Creates the application described in the provided file */ XBT_PUBLIC void MSG_launch_application(const char* file); -/*Bypass the parser */ +/** @brief register functions bypassing the parser */ XBT_PUBLIC void MSG_set_function(const char* host_id, const char* function_name, xbt_dynar_t arguments); +/** @brief A clock (in second). */ XBT_PUBLIC double MSG_get_clock(); +/** @brief Returns the amount of messages sent since the simulation start */ XBT_PUBLIC unsigned long int MSG_get_sent_msg(); /************************** Process handling *********************************/ +XBT_PUBLIC void MSG_process_userdata_init(); XBT_PUBLIC msg_process_t MSG_process_create(const char* name, xbt_main_func_t code, void* data, msg_host_t host); XBT_PUBLIC msg_process_t MSG_process_create_with_arguments(const char* name, xbt_main_func_t code, void* data, msg_host_t host, int argc, char** argv); @@ -235,23 +323,14 @@ XBT_PUBLIC msg_process_t MSG_process_create_with_environment(const char* name, x XBT_PUBLIC msg_process_t MSG_process_attach(const char* name, void* data, msg_host_t host, xbt_dict_t properties); XBT_PUBLIC void MSG_process_detach(); -XBT_PUBLIC int MSG_process_killall(); -XBT_PUBLIC void MSG_process_yield(); - XBT_PUBLIC void MSG_process_set_data_cleanup(void_f_pvoid_t data_cleanup); -XBT_PUBLIC msg_process_t MSG_process_from_PID(int PID); -XBT_PUBLIC int MSG_process_self_PID(); -XBT_PUBLIC int MSG_process_self_PPID(); -XBT_PUBLIC const char* MSG_process_self_name(); -XBT_PUBLIC msg_process_t MSG_process_self(); XBT_PUBLIC xbt_dynar_t MSG_processes_as_dynar(); XBT_PUBLIC int MSG_process_get_number(); XBT_PUBLIC void* MSG_process_get_data(msg_process_t process); XBT_PUBLIC msg_error_t MSG_process_set_data(msg_process_t process, void* data); -XBT_PUBLIC void MSG_process_on_exit(int_f_pvoid_pvoid_t fun, void* data); -XBT_PUBLIC void MSG_process_auto_restart_set(msg_process_t process, int auto_restart); +XBT_PUBLIC void MSG_process_on_exit(int_f_int_pvoid_t fun, void* data); XBT_PUBLIC void MSG_process_ref(msg_process_t process); XBT_PUBLIC void MSG_process_unref(msg_process_t process); @@ -262,7 +341,6 @@ XBT_PUBLIC msg_task_t MSG_parallel_task_create(const char* name, int host_nb, co double* flops_amount, double* bytes_amount, void* data); XBT_PUBLIC void* MSG_task_get_data(msg_task_t task); XBT_PUBLIC void MSG_task_set_data(msg_task_t task, void* data); -XBT_PUBLIC void MSG_task_set_copy_callback(void (*callback)(msg_task_t task, msg_process_t src, msg_process_t dst)); XBT_PUBLIC msg_process_t MSG_task_get_sender(msg_task_t task); XBT_PUBLIC msg_host_t MSG_task_get_source(msg_task_t task); XBT_PUBLIC const char* MSG_task_get_name(msg_task_t task); @@ -276,8 +354,6 @@ XBT_PUBLIC msg_error_t MSG_parallel_task_execute_with_timeout(msg_task_t task, d XBT_PUBLIC void MSG_task_set_priority(msg_task_t task, double priority); XBT_PUBLIC void MSG_task_set_bound(msg_task_t task, double bound); -XBT_PUBLIC msg_error_t MSG_process_sleep(double nb_sec); - XBT_PUBLIC void MSG_task_set_flops_amount(msg_task_t task, double flops_amount); XBT_PUBLIC double MSG_task_get_flops_amount(msg_task_t task); XBT_PUBLIC double MSG_task_get_remaining_work_ratio(msg_task_t task); @@ -286,7 +362,9 @@ XBT_PUBLIC void MSG_task_set_bytes_amount(msg_task_t task, double bytes_amount); XBT_PUBLIC double MSG_task_get_remaining_communication(msg_task_t task); XBT_PUBLIC double MSG_task_get_bytes_amount(msg_task_t task); -XBT_PUBLIC msg_error_t MSG_task_receive_ext(msg_task_t* task, const char* alias, double timeout, msg_host_t host); +XBT_ATTRIB_DEPRECATED_v325("Getting a task from a specific host is no longer supported." + " Use MSG_task_receive_with_timeout instead.") XBT_PUBLIC msg_error_t + MSG_task_receive_ext(msg_task_t* task, const char* alias, double timeout, msg_host_t host); XBT_PUBLIC msg_error_t MSG_task_receive_with_timeout(msg_task_t* task, const char* alias, double timeout); @@ -317,6 +395,12 @@ XBT_PUBLIC int MSG_comm_waitany(xbt_dynar_t comms); XBT_PUBLIC msg_task_t MSG_comm_get_task(msg_comm_t comm); XBT_PUBLIC msg_error_t MSG_comm_get_status(msg_comm_t comm); +/** @brief Check if there is a communication going on in a mailbox. + * + * @param alias the name of the mailbox to be considered + * + * @return Returns 1 if there is a communication, 0 otherwise + */ XBT_PUBLIC int MSG_task_listen(const char* alias); XBT_PUBLIC msg_error_t MSG_task_send_with_timeout(msg_task_t task, const char* alias, double timeout); XBT_PUBLIC msg_error_t MSG_task_send_with_timeout_bounded(msg_task_t task, const char* alias, double timeout, @@ -329,56 +413,41 @@ XBT_PUBLIC const char* MSG_task_get_category(msg_task_t task); /************************** Mailbox handling ************************************/ -/* @brief MSG_mailbox_set_async - set a mailbox as eager - * Sets the mailbox to a permanent receiver mode. Messages sent to this mailbox will then be sent just after the send - * is issued, without waiting for the corresponding receive. +/* @brief set a mailbox in eager mode. + * All messages sent to this mailbox will be transferred to the receiver without waiting for the receive call. + * The receive call will still be necessary to use the received data. + * If there is a need to receive some messages asynchronously, and some not, two different mailboxes should be used. + * * This call should be done before issuing any receive, and on the receiver's side only - * @param alias The alias of the mailbox to modify. */ XBT_PUBLIC void MSG_mailbox_set_async(const char* alias); -/************************** Action handling **********************************/ -XBT_PUBLIC msg_error_t MSG_action_trace_run(char* path); -XBT_PUBLIC void MSG_action_init(); -XBT_PUBLIC void MSG_action_exit(); - -/** @brief Opaque type representing a semaphore - * @ingroup msg_synchro - * @hideinitializer - */ -typedef struct s_smx_sem_t* msg_sem_t; // Yeah that's a rename of the smx_sem_t which doesnt require smx_sem_t to be - // declared here +/** @brief Opaque type representing a semaphore */ +typedef sg_sem_t msg_sem_t; XBT_PUBLIC msg_sem_t MSG_sem_init(int initial_value); XBT_PUBLIC void MSG_sem_acquire(msg_sem_t sem); -XBT_PUBLIC msg_error_t MSG_sem_acquire_timeout(msg_sem_t sem, double timeout); +XBT_PUBLIC int MSG_sem_acquire_timeout(msg_sem_t sem, double timeout); XBT_PUBLIC void MSG_sem_release(msg_sem_t sem); XBT_PUBLIC int MSG_sem_get_capacity(msg_sem_t sem); XBT_PUBLIC void MSG_sem_destroy(msg_sem_t sem); XBT_PUBLIC int MSG_sem_would_block(msg_sem_t sem); -/** @brief Opaque type representing a barrier identifier - * @ingroup msg_synchro - * @hideinitializer - */ - -#define MSG_BARRIER_SERIAL_PROCESS -1 -typedef struct s_msg_bar_t* msg_bar_t; +/** @brief Opaque type representing a barrier identifier */ +typedef sg_bar_t msg_bar_t; +/** @brief Initializes a barier, with count elements */ XBT_PUBLIC msg_bar_t MSG_barrier_init(unsigned int count); +/** @brief Destroys barrier */ XBT_PUBLIC void MSG_barrier_destroy(msg_bar_t bar); +/** @brief Performs a barrier already initialized */ XBT_PUBLIC int MSG_barrier_wait(msg_bar_t bar); /* ****************************************************************************************** */ /* DO NOT USE this nasty pimple (unless if you're writing a binding) */ -XBT_PUBLIC smx_context_t -XBT_ATTRIB_DEPRECATED_v323("MSG_process_get_smx_ctx is deprecated. Please contact us if you need it.") -MSG_process_get_smx_ctx(msg_process_t process); - -SG_END_DECL() +XBT_ATTRIB_DEPRECATED_v325("MSG_process_set_copy_callback is deprecated. Please contact us if you need it.") XBT_PUBLIC + void MSG_task_set_copy_callback(void (*callback)(msg_task_t task, msg_process_t src, msg_process_t dst)); #ifdef __cplusplus -XBT_PUBLIC msg_process_t MSG_process_create_from_stdfunc(const char* name, std::function code, void* data, - msg_host_t host, - std::map* properties); +} #endif #endif