#include "xbt/fifo.h"\r
#include "xbt/swag.h"\r
#include "xbt/dict.h"\r
-#include "xbt/config.h"\r
#include "xbt/function_types.h"\r
\r
/******************************** Datatypes ***********************************/\r
\r
/*********************************** Host *************************************/\r
\r
-/** @brief Host datatype \r
+/** @brief Host datatype\r
@ingroup m_datatypes_management_details */\r
typedef struct s_smx_host {\r
char *name; /**< @brief host name if any */\r
\r
/******************************** Process *************************************/\r
\r
-typedef struct s_xbt_context *xbt_context_t;\r
+typedef struct s_smx_context *smx_context_t;\r
\r
-/** @brief Process datatype \r
+/** @brief Process datatype\r
@ingroup m_datatypes_management_details @{ */\r
typedef struct s_smx_process {\r
s_xbt_swag_hookup_t process_hookup;\r
\r
char *name; /**< @brief process name if any */\r
smx_host_t smx_host; /* the host on which the process is running */\r
- xbt_context_t context; /* the context that executes the scheduler function */\r
+ smx_context_t context; /* the context that executes the scheduler function */\r
int argc; /* arguments number if any */\r
char **argv; /* arguments table if any */\r
int blocked : 1;\r
xbt_dict_t properties;\r
} s_smx_process_arg_t, *smx_process_arg_t;\r
\r
+void SIMIX_process_empty_trash(void);\r
+\r
/*************************** Mutex and Conditional ****************************/\r
\r
typedef struct s_smx_mutex {\r
\r
/********************************* Action *************************************/\r
\r
-/** @brief Action datatype \r
+/** @brief Action datatype\r
@ingroup m_datatypes_management_details */\r
typedef struct s_smx_action {\r
char *name; /**< @brief action name if any */\r
smx_host_t source;\r
} s_smx_action_t;\r
\r
-/******************************* Other **********************************/\r
+/************************** Configuration support *****************************/\r
\r
+extern int _simix_init_status; /* 0: beginning of time; FIXME: KILLME ?\r
+ 1: pre-inited (cfg_set created);\r
+ 2: inited (running) */\r
\r
#define SIMIX_CHECK_HOST() xbt_assert0(surf_workstation_model->extension.workstation. \\r
get_state(SIMIX_host_self()->host)==SURF_RESOURCE_ON,\\r
\r
/******************************** Context *************************************/\r
\r
-int SIMIX_context_create_maestro(smx_process_t *process);\r
-\r
-int SIMIX_context_new(smx_process_t *process, xbt_main_func_t code);\r
-\rvoid SIMIX_context_kill(smx_process_t process);\r
-\rvoid SIMIX_context_start(smx_process_t process);\r
-\rvoid SIMIX_context_yield(void);\r
-\rvoid SIMIX_context_schedule(smx_process_t process);\r
- \rvoid SIMIX_context_empty_trash(void);\r
-\r
-void SIMIX_context_stop(int exit_code);\r
- \rvoid SIMIX_context_free(smx_process_t process);\r
-\r
void SIMIX_context_mod_init(void);\r
\r
void SIMIX_context_mod_exit(void);\r
+\r
+/* *********************** */\r
+/* Context type definition */\r
+/* *********************** */\r
+/* the following function pointers types describe the interface that all context\r
+ concepts must implement */\r
+\r
+/* each context type must contain this macro at its begining -- OOP in C :/ */\r
+#define SMX_CTX_BASE_T \\r
+ s_xbt_swag_hookup_t hookup; \\r
+ ex_ctx_t *exception; \\r
+ xbt_main_func_t code; \\r
+\r
+/* all other context types derive from this structure */\r
+typedef struct s_smx_context {\r
+ SMX_CTX_BASE_T;\r
+} s_smx_context_t;\r
+\r
+/* *********************** */\r
+/* factory type definition */\r
+/* *********************** */\r
+\r
+/* Each context implementation define its own context factory\r
+ * A context factory is responsable of the creation and manipulation of the \r
+ * execution context of all the simulated processes (and maestro) using the\r
+ * selected implementation.\r
+ *\r
+ * For example, the context switch based on java thread use the\r
+ * java implementation of the context and the java factory to build and control\r
+ * the contexts depending on this implementation.\r
+\r
+ * The following function pointer types describe the interface that any context \r
+ * factory should implement.\r
+ */\r
+\r
+/* function used to create a new context */\r
+typedef int (*smx_pfn_context_factory_create_context_t) (smx_process_t *, xbt_main_func_t);\r
+\r
+/* function used to create the context for the maestro process */\r
+typedef int (*smx_pfn_context_factory_create_maestro_context_t) (smx_process_t*);\r
+\r
+/* this function finalize the specified context factory */\r
+typedef int (*smx_pfn_context_factory_finalize_t) (smx_context_factory_t*);\r
+\r
+/* function used to destroy the specified context */\r
+typedef void (*smx_pfn_context_free_t) (smx_process_t);\r
+\r
+/* function used to kill the specified context */\r
+typedef void (*smx_pfn_context_kill_t) (smx_process_t);\r
+\r
+/* function used to resume the specified context */\r
+typedef void (*smx_pfn_context_schedule_t) (smx_process_t);\r
+\r
+/* function used to yield the specified context */\r
+typedef void (*smx_pfn_context_yield_t) (void);\r
+\r
+/* function used to start the specified context */\r
+typedef void (*smx_pfn_context_start_t) (smx_process_t);\r
+\r
+/* function used to stop the current context */\r
+typedef void (*smx_pfn_context_stop_t) (int);\r
+\r
+/* interface of the context factories */\r
+typedef struct s_smx_context_factory {\r
+ smx_pfn_context_factory_create_maestro_context_t create_maestro_context;\r
+ smx_pfn_context_factory_create_context_t create_context;\r
+ smx_pfn_context_factory_finalize_t finalize;\r
+ smx_pfn_context_free_t free;\r
+ smx_pfn_context_kill_t kill;\r
+ smx_pfn_context_schedule_t schedule;\r
+ smx_pfn_context_yield_t yield;\r
+ smx_pfn_context_start_t start;\r
+ smx_pfn_context_stop_t stop;\r
+ const char *name;\r
+} s_smx_context_factory_t;\r
+\r
+/* Selects a context factory associated with the name specified by the parameter name.\r
+ * If successful the function returns 0. Otherwise the function returns the error code.\r
+ */\r
+int SIMIX_context_select_factory(const char *name);\r
+\r
+/* Initializes a context factory from the name specified by the parameter name.\r
+ * If the factory cannot be found, an exception is raised.\r
+ */\r
+void SIMIX_context_init_factory_by_name(smx_context_factory_t * factory, const char *name);\r
+\r
+/* All factories init */\r
+void SIMIX_ctx_thread_factory_init(smx_context_factory_t * factory);\r
+\r
+void SIMIX_ctx_sysv_factory_init(smx_context_factory_t * factory);\r
+\r
+void SIMIX_ctx_java_factory_init(smx_context_factory_t * factory);\r
+\r
+/* ******************************* */\r
+/* contexts manipulation functions */\r
+/* ******************************* */\r
+\r
+/**\r
+ * \param smx_process the simix maestro process that contains this context\r
+ */\r
+static inline int SIMIX_context_create_maestro(smx_process_t *process)\r
+{\r
+ return (*(simix_global->context_factory->create_maestro_context)) (process);\r
+}\r
+\r
+/**\r
+ * \param smx_process the simix process that contains this context\r
+ * \param code a main function\r
+ */\r
+static inline int SIMIX_context_new(smx_process_t *process, xbt_main_func_t code)\r
+{\r
+ return (*(simix_global->context_factory->create_context)) (process, code);\r
+}\r
+\r
+/* Scenario for the end of a context:\r
+ *\r
+ * CASE 1: death after end of function\r
+ * __context_wrapper, called by os thread, calls smx_context_stop after user code stops\r
+ * smx_context_stop calls user cleanup_func if any (in context settings),\r
+ * add current to trashbin\r
+ * yields back to maestro (destroy os thread on need)\r
+ * From time to time, maestro calls smx_context_empty_trash,\r
+ * which maps smx_context_free on the content\r
+ * smx_context_free frees some more memory,\r
+ * joins os thread\r
+ *\r
+ * CASE 2: brutal death\r
+ * smx_context_kill (from any context)\r
+ * set context->wannadie to 1\r
+ * yields to the context\r
+ * the context is awaken in the middle of __yield.\r
+ * At the end of it, it checks that wannadie == 1, and call smx_context_stop\r
+ * (same than first case afterward)\r
+ */\r
+static inline void SIMIX_context_kill(smx_process_t process)\r
+{\r
+ (*(simix_global->context_factory->kill)) (process);\r
+}\r
+\r
+/* Argument must be stopped first -- runs in maestro context */\r
+static inline void SIMIX_context_free(smx_process_t process)\r
+{\r
+ (*(simix_global->context_factory->free)) (process);\r
+}\r
+\r
+/**\r
+ * \param context the context to start\r
+ *\r
+ * Calling this function prepares \a process to be run. It will\r
+ however run effectively only when calling #SIMIX_context_schedule\r
+ */\r
+static inline void SIMIX_context_start(smx_process_t process)\r
+{\r
+ (*(simix_global->context_factory->start)) (process);\r
+}\r
+\r
+/**\r
+ * Calling this function makes the current process yield. The process\r
+ * that scheduled it returns from SIMIX_context_schedule as if nothing\r
+ * had happened.\r
+ *\r
+ * Only the processes can call this function, giving back the control\r
+ * to the maestro\r
+ */\r
+static inline void SIMIX_context_yield(void)\r
+{\r
+ (*(simix_global->context_factory->yield)) ();\r
+}\r
+\r
+/**\r
+ * \param process to be scheduled\r
+ *\r
+ * Calling this function blocks the current process and schedule \a process.\r
+ * When \a process would call SIMIX_context_yield, it will return\r
+ * to this function as if nothing had happened.\r
+ *\r
+ * Only the maestro can call this function to run a given process.\r
+ */\r
+static inline void SIMIX_context_schedule(smx_process_t process)\r
+{\r
+ (*(simix_global->context_factory->schedule)) (process);\r
+}\r
+\r
+static inline void SIMIX_context_stop(int exit_code)\r
+{\r
+ (*(simix_global->context_factory->stop)) (exit_code);\r
+}\r
+\r
#endif\r
