1 /* a fast and simple context switching library */
3 /* Copyright (c) 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
13 #include "simix/smx_context_private.h"
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_context, simix,
16 "Context switching mecanism");
18 SIMIX_ctx_factory_initializer_t factory_initializer_to_use = NULL;
21 * This function is called by SIMIX_global_init() to initialize the context module.
23 void SIMIX_context_mod_init(void)
25 if (!simix_global->context_factory) {
26 /* select context factory to use to create the context(depends of the macro definitions) */
27 if (factory_initializer_to_use) {
28 (*factory_initializer_to_use)(&(simix_global->context_factory));
30 #ifdef CONTEXT_THREADS /* Use os threads (either pthreads or windows ones) */
31 SIMIX_ctx_thread_factory_init(&simix_global->context_factory);
32 #elif defined(CONTEXT_UCONTEXT) /* use ucontext */
33 SIMIX_ctx_sysv_factory_init(&simix_global->context_factory);
35 #error ERROR [__FILE__, line __LINE__]: no context implementation specified.
42 * This function is call by SIMIX_clean() to finalize the context module.
44 void SIMIX_context_mod_exit(void)
46 if (simix_global->context_factory) {
47 smx_pfn_context_factory_finalize_t finalize_factory;
49 /* finalize the context factory */
50 finalize_factory = simix_global->context_factory->finalize;
51 (*finalize_factory) (&simix_global->context_factory);