-/* $Id$ */
+/* context_sysv - context switching with ucontextes from System V */
-/* context_sysv - implementation of context switching with ucontextes from Sys V */
+/* Copyright (c) 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
-/* Copyright (c) 2004-2008 the SimGrid team. All right 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. */
-/* 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 "smx_context_private.h"
+
+#include "smx_context_sysv_private.h"
#ifdef HAVE_VALGRIND_VALGRIND_H
# include <valgrind/valgrind.h>
-#endif /* HAVE_VALGRIND_VALGRIND_H */
+#endif /* HAVE_VALGRIND_VALGRIND_H */
+
+#ifdef _XBT_WIN32
+#include "win32_ucontext.h"
+#include "win32_ucontext.c"
+#else
+#include "ucontext.h"
+#endif
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
-static smx_context_t
-smx_ctx_sysv_create_context(xbt_main_func_t code, int argc, char** argv,
- void_f_pvoid_t cleanup_func, void* cleanup_arg);
+static smx_context_t
+smx_ctx_sysv_create_context(xbt_main_func_t code, int argc, char **argv,
+ void_f_pvoid_t cleanup_func,
+ void *cleanup_arg);
static void smx_ctx_sysv_wrapper(void);
-void SIMIX_ctx_sysv_factory_init(smx_context_factory_t *factory) {
+void SIMIX_ctx_sysv_factory_init(smx_context_factory_t * factory)
+{
smx_ctx_base_factory_init(factory);
}
smx_context_t
-smx_ctx_sysv_create_context_sized(size_t size, xbt_main_func_t code, int argc, char** argv,
- void_f_pvoid_t cleanup_func, void* cleanup_arg) {
-
- smx_ctx_sysv_t context = (smx_ctx_sysv_t)smx_ctx_base_factory_create_context_sized
- (size, code,argc,argv,cleanup_func,cleanup_arg);
+smx_ctx_sysv_create_context_sized(size_t size, xbt_main_func_t code,
+ int argc, char **argv,
+ void_f_pvoid_t cleanup_func,
+ void *cleanup_arg)
+{
+
+ smx_ctx_sysv_t context =
+ (smx_ctx_sysv_t) smx_ctx_base_factory_create_context_sized(size,
+ code,
+ argc,
+ argv,
+ cleanup_func,
+ cleanup_arg);
/* If the user provided a function for the process then use it
otherwise is the context for maestro */
- if(code){
+ if (code) {
xbt_assert2(getcontext(&(context->uc)) == 0,
- "Error in context saving: %d (%s)", errno, strerror(errno));
+ "Error in context saving: %d (%s)", errno,
+ strerror(errno));
context->uc.uc_link = NULL;
#ifdef HAVE_VALGRIND_VALGRIND_H
context->valgrind_stack_id =
VALGRIND_STACK_REGISTER(context->uc.uc_stack.ss_sp,
- ((char *) context->uc.uc_stack.ss_sp) +
- context->uc.uc_stack.ss_size);
-#endif /* HAVE_VALGRIND_VALGRIND_H */
+ ((char *) context->uc.uc_stack.ss_sp) +
+ context->uc.uc_stack.ss_size);
+#endif /* HAVE_VALGRIND_VALGRIND_H */
- makecontext(&((smx_ctx_sysv_t)context)->uc, smx_ctx_sysv_wrapper, 0);
+ makecontext(&((smx_ctx_sysv_t) context)->uc, smx_ctx_sysv_wrapper, 0);
}
- return (smx_context_t)context;
+ return (smx_context_t) context;
}
static smx_context_t
-smx_ctx_sysv_create_context(xbt_main_func_t code, int argc, char** argv,
- void_f_pvoid_t cleanup_func, void* cleanup_arg) {
+smx_ctx_sysv_create_context(xbt_main_func_t code, int argc, char **argv,
+ void_f_pvoid_t cleanup_func, void *cleanup_arg)
+{
return smx_ctx_sysv_create_context_sized(sizeof(s_smx_ctx_sysv_t),
- code,argc,argv,cleanup_func,cleanup_arg);
+ code, argc, argv, cleanup_func,
+ cleanup_arg);
}
-void smx_ctx_sysv_free(smx_context_t context) {
+void smx_ctx_sysv_free(smx_context_t context)
+{
- if (context){
+ if (context) {
#ifdef HAVE_VALGRIND_VALGRIND_H
- VALGRIND_STACK_DEREGISTER(((smx_ctx_sysv_t) context)->valgrind_stack_id);
-#endif /* HAVE_VALGRIND_VALGRIND_H */
+ VALGRIND_STACK_DEREGISTER(((smx_ctx_sysv_t)
+ context)->valgrind_stack_id);
+#endif /* HAVE_VALGRIND_VALGRIND_H */
}
smx_ctx_base_free(context);
}
-void smx_ctx_sysv_stop(smx_context_t context) {
+void smx_ctx_sysv_stop(smx_context_t context)
+{
smx_ctx_base_stop(context);
smx_ctx_sysv_suspend(context);
}
-void smx_ctx_sysv_wrapper() {
+void smx_ctx_sysv_wrapper()
+{
/*FIXME: I would like to avoid accessing simix_global to get the current
- context by passing it as an argument of the wrapper function. The problem
- is that this function is called from smx_ctx_sysv_start, and uses
- makecontext for calling it, and the stupid posix specification states that
- all the arguments of the function should be int(32 bits), making it useless
- in 64-bit architectures where pointers are 64 bit long.
+ context by passing it as an argument of the wrapper function. The problem
+ is that this function is called from smx_ctx_sysv_start, and uses
+ makecontext for calling it, and the stupid posix specification states that
+ all the arguments of the function should be int(32 bits), making it useless
+ in 64-bit architectures where pointers are 64 bit long.
*/
- smx_ctx_sysv_t context =
- (smx_ctx_sysv_t)simix_global->current_process->context;
+ smx_ctx_sysv_t context =
+ (smx_ctx_sysv_t) simix_global->current_process->context;
(context->super.code) (context->super.argc, context->super.argv);
- smx_ctx_sysv_stop((smx_context_t)context);
+ smx_ctx_sysv_stop((smx_context_t) context);
}
-void smx_ctx_sysv_suspend(smx_context_t context) {
- ucontext_t maestro_ctx = ((smx_ctx_sysv_t)simix_global->maestro_process->context)->uc;
+void smx_ctx_sysv_suspend(smx_context_t context)
+{
+ ucontext_t maestro_ctx =
+ ((smx_ctx_sysv_t) simix_global->maestro_process->context)->uc;
int rv = swapcontext(&((smx_ctx_sysv_t) context)->uc, &maestro_ctx);
xbt_assert0((rv == 0), "Context swapping failure");
}
-void smx_ctx_sysv_resume(smx_context_t new_context) {
- smx_ctx_sysv_t maestro = (smx_ctx_sysv_t)simix_global->maestro_process->context;
+void smx_ctx_sysv_resume(smx_context_t new_context)
+{
+ smx_ctx_sysv_t maestro =
+ (smx_ctx_sysv_t) simix_global->maestro_process->context;
- int rv = swapcontext(&(maestro->uc), &((smx_ctx_sysv_t)new_context)->uc);
+ int rv =
+ swapcontext(&(maestro->uc), &((smx_ctx_sysv_t) new_context)->uc);
xbt_assert0((rv == 0), "Context swapping failure");
}