X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/1a8827364b0c5218665c438e25e746ecb3a5c152..6b28daccf7142bd4b00e9eee1cd63daa90ae4ad9:/src/simix/smx_context.c diff --git a/src/simix/smx_context.c b/src/simix/smx_context.c index ac7c324808..560a909668 100644 --- a/src/simix/smx_context.c +++ b/src/simix/smx_context.c @@ -1,7 +1,7 @@ /* a fast and simple context switching library */ -/* Copyright (c) 2004-2008 the SimGrid team. */ -/* All rights reserved. */ +/* Copyright (c) 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. */ @@ -10,34 +10,41 @@ #include "xbt/log.h" #include "xbt/swag.h" #include "private.h" -#define HAVE_RUBY /* HACK HACK */ + +#ifdef HAVE_LUA +#include +#endif #ifdef HAVE_RUBY -extern void SIMIX_ctx_ruby_factory_init(smx_context_factory_t *factory); +void SIMIX_ctx_ruby_factory_init(smx_context_factory_t * factory); #endif -XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_context, simix, "Context switching mecanism"); +XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_context, simix, + "Context switching mecanism"); const char *xbt_ctx_factory_to_use = NULL; -/** +/** * This function is call by SIMIX_global_init() to initialize the context module. */ + void SIMIX_context_mod_init(void) { if (!simix_global->context_factory) { - /* select context factory to use to create the context(depends of the macro definitions) */ + /* select context factory to use to create the context(depends of the macro definitions) */ if (xbt_ctx_factory_to_use) { SIMIX_context_select_factory(xbt_ctx_factory_to_use); } else { #ifdef CONTEXT_THREADS - /* context switch based os thread */ - SIMIX_ctx_thread_factory_init(&simix_global->context_factory); -#elif !defined(WIN32) - /* context switch based ucontext */ - SIMIX_ctx_sysv_factory_init(&simix_global->context_factory); + /* context switch based os thread */ + SIMIX_ctx_thread_factory_init(&simix_global->context_factory); +#elif defined(CONTEXT_UCONTEXT) + /* context switch based ucontext */ + SIMIX_ctx_sysv_factory_init(&simix_global->context_factory); +#elif defined(_XBT_WIN32) + /* context switch based windows */ #else - /* context switch is not allowed on Windows */ + /* context switch is not allowed on Windows */ #error ERROR [__FILE__, line __LINE__]: no context based implementation specified. #endif } @@ -51,7 +58,7 @@ void SIMIX_context_mod_exit(void) { if (simix_global->context_factory) { smx_pfn_context_factory_finalize_t finalize_factory; - + /* finalize the context factory */ finalize_factory = simix_global->context_factory->finalize; (*finalize_factory) (&simix_global->context_factory); @@ -68,29 +75,32 @@ int SIMIX_context_select_factory(const char *name) /* if a context factory is already instantiated and it is different from the newly selected one, then kill all the processes, exit the context module and initialize the new factory. - */ + */ + + if (simix_global->context_factory != NULL) { - if (strcmp(simix_global->context_factory->name, name)){ + if (strcmp(simix_global->context_factory->name, name)) { SIMIX_process_killall(); - + /* kill maestro process */ SIMIX_context_free(simix_global->maestro_process->context); - free(simix_global->maestro_process); + free(simix_global->maestro_process); simix_global->maestro_process = NULL; SIMIX_context_mod_exit(); - } - else + } else /* the same context factory is requested return directly */ return 0; } - + /* init the desired factory */ SIMIX_context_init_factory_by_name(&simix_global->context_factory, name); - SIMIX_create_maestro_process (); - + SIMIX_create_maestro_process(); + + + return 0; } @@ -100,39 +110,45 @@ int SIMIX_context_select_factory(const char *name) void SIMIX_context_init_factory_by_name(smx_context_factory_t * factory, const char *name) { + if (!strcmp(name, "java")) -#ifdef HAVE_JAVA +#ifdef HAVE_JAVA SIMIX_ctx_java_factory_init(factory); #else - THROW0(not_found_error, 0, "Factory 'Java' does not exist: Java support was not compiled in the SimGrid library"); -#endif /* HAVE_JAVA */ - + THROW0(not_found_error, 0, + "Factory 'Java' does not exist: Java support was not compiled in the SimGrid library"); +#endif /* HAVE_JAVA */ + else if (!strcmp(name, "thread")) #ifdef CONTEXT_THREADS SIMIX_ctx_thread_factory_init(factory); #else - THROW0(not_found_error, 0, "Factory 'thread' does not exist: thread support was not compiled in the SimGrid library"); -#endif /* CONTEXT_THREADS */ - - else if (!strcmp(name, "sysv")) - #if !defined(WIN32) && !defined(CONTEXT_THREADS) - SIMIX_ctx_sysv_factory_init(factory); - #else - THROW0(not_found_error, 0, "Factory 'sysv' does not exist: no System V thread support under Windows"); - #endif - else if (!strcmp(name, "lua")) + THROW0(not_found_error, 0, + "Factory 'thread' does not exist: thread support was not compiled in the SimGrid library"); +#endif /* CONTEXT_THREADS */ + + else if (!strcmp(name, "sysv")) +#if !defined(_XBT_WIN32) && !defined(CONTEXT_THREADS) + SIMIX_ctx_sysv_factory_init(factory); +#else + THROW0(not_found_error, 0, + "Factory 'sysv' does not exist: no System V thread support under Windows"); +#endif + else if (!strcmp(name, "lua")) #ifdef HAVE_LUA - SIMIX_ctx_lua_factory_init(factory); + SIMIX_ctx_lua_factory_init(factory); #else - THROW0(not_found_error, 0, "Factory 'lua' does not exist: Lua support was not compiled in the SimGrid library"); -#endif /* HAVE_LUA */ + THROW0(not_found_error, 0, + "Factory 'lua' does not exist: Lua support was not compiled in the SimGrid library"); +#endif /* HAVE_LUA */ - else if (!strcmp(name,"ruby")) + else if (!strcmp(name, "ruby")) #ifdef HAVE_RUBY - SIMIX_ctx_ruby_factory_init(factory); + SIMIX_ctx_ruby_factory_init(factory); #else - THROW0(not_found_error, 0, "Factory 'ruby' does not exist: Ruby support was not compiled in the SimGrid library"); + THROW0(not_found_error, 0, + "Factory 'ruby' does not exist: Ruby support was not compiled in the SimGrid library"); #endif else THROW1(not_found_error, 0, "Factory '%s' does not exist", name);