/* context_thread - implementation of context switching with native threads */
-/* Copyright (c) 2009, 2010. The SimGrid Team.
+/* Copyright (c) 2009-2012. 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. */
#include "xbt/function_types.h"
-#include "private.h"
+#include "smx_private.h"
#include "portable.h" /* loads context system definitions */
#include "xbt/swag.h"
#include "xbt/xbt_os_thread.h"
#include "xbt_modinter.h" /* prototype of os thread module's init/exit in XBT */
-#include "simix/context.h"
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
xbt_os_sem_t end; /* this semaphore is used to schedule/unschedule the process */
} s_smx_ctx_thread_t, *smx_ctx_thread_t;
+static xbt_os_sem_t smx_ctx_thread_sem;
+
static smx_context_t
smx_ctx_thread_factory_create_context(xbt_main_func_t code, int argc,
char **argv,
static void smx_ctx_thread_free(smx_context_t context);
static void smx_ctx_thread_stop(smx_context_t context);
static void smx_ctx_thread_suspend(smx_context_t context);
-static void smx_ctx_thread_resume(smx_context_t new_context);
-static void smx_ctx_thread_runall_serial(xbt_dynar_t processes);
-static void smx_ctx_thread_runall_parallel(xbt_dynar_t processes);
+static void smx_ctx_thread_runall_serial(void);
+static void smx_ctx_thread_runall_parallel(void);
static smx_context_t smx_ctx_thread_self(void);
+static int smx_ctx_thread_factory_finalize(smx_context_factory_t *factory);
static void *smx_ctx_thread_wrapper(void *param);
void SIMIX_ctx_thread_factory_init(smx_context_factory_t * factory)
smx_ctx_base_factory_init(factory);
XBT_VERB("Activating thread context factory");
+ (*factory)->finalize = smx_ctx_thread_factory_finalize;
(*factory)->create_context = smx_ctx_thread_factory_create_context;
/* Do not overload that method (*factory)->finalize */
(*factory)->free = smx_ctx_thread_free;
(*factory)->self = smx_ctx_thread_self;
(*factory)->name = "ctx_thread_factory";
+
+ if (SIMIX_context_is_parallel()) {
+ smx_ctx_thread_sem = xbt_os_sem_init(SIMIX_context_get_nthreads());
+ } else {
+ smx_ctx_thread_sem = NULL;
+ }
+}
+
+static int smx_ctx_thread_factory_finalize(smx_context_factory_t *factory)
+{
+ if (smx_ctx_thread_sem) {
+ xbt_os_sem_destroy(smx_ctx_thread_sem);
+ smx_ctx_thread_sem = NULL;
+ }
+ return smx_ctx_base_factory_finalize(factory);
}
static smx_context_t
if (code) {
context->begin = xbt_os_sem_init(0);
context->end = xbt_os_sem_init(0);
+ if (smx_context_stack_size_was_set)
+ xbt_os_thread_setstacksize(smx_context_stack_size);
+
/* create and start the process */
/* NOTE: The first argument to xbt_os_thread_create used to be the process *
* name, but now the name is stored at SIMIX level, so we pass a null */
context->thread =
xbt_os_thread_create(NULL, smx_ctx_thread_wrapper, context, context);
+
/* wait the starting of the newly created process */
xbt_os_sem_acquire(context->end);
{
smx_ctx_thread_t context = (smx_ctx_thread_t) pcontext;
- /* check if this is the context of maestro (it doesn't has a real thread) */
+ /* check if this is the context of maestro (it doesn't have a real thread) */
if (context->thread) {
/* wait about the thread terminason */
xbt_os_thread_join(context->thread, NULL);
/* please no debug here: our procdata was already free'd */
smx_ctx_base_stop(pcontext);
+ if (smx_ctx_thread_sem) /* parallel run */
+ xbt_os_sem_release(smx_ctx_thread_sem);
+
/* signal to the maestro that it has finished */
xbt_os_sem_release(((smx_ctx_thread_t) context)->end);
/* Tell the maestro we are starting, and wait for its green light */
xbt_os_sem_release(context->end);
xbt_os_sem_acquire(context->begin);
+ if (smx_ctx_thread_sem) /* parallel run */
+ xbt_os_sem_acquire(smx_ctx_thread_sem);
(context->super.code) (context->super.argc, context->super.argv);
static void smx_ctx_thread_suspend(smx_context_t context)
{
+ if (smx_ctx_thread_sem) /* parallel run */
+ xbt_os_sem_release(smx_ctx_thread_sem);
xbt_os_sem_release(((smx_ctx_thread_t) context)->end);
xbt_os_sem_acquire(((smx_ctx_thread_t) context)->begin);
+ if (smx_ctx_thread_sem) /* parallel run */
+ xbt_os_sem_acquire(smx_ctx_thread_sem);
}
-static void smx_ctx_thread_runall_serial(xbt_dynar_t processes)
+static void smx_ctx_thread_runall_serial(void)
{
smx_process_t process;
unsigned int cursor;
- xbt_dynar_foreach(processes, cursor, process) {
+ xbt_dynar_foreach(simix_global->process_to_run, cursor, process) {
xbt_os_sem_release(((smx_ctx_thread_t) process->context)->begin);
xbt_os_sem_acquire(((smx_ctx_thread_t) process->context)->end);
}
- xbt_dynar_reset(processes);
}
-static void smx_ctx_thread_runall_parallel(xbt_dynar_t processes)
+static void smx_ctx_thread_runall_parallel(void)
{
unsigned int index;
smx_process_t process;
- xbt_dynar_foreach(processes, index, process)
+ xbt_dynar_foreach(simix_global->process_to_run, index, process)
xbt_os_sem_release(((smx_ctx_thread_t) process->context)->begin);
- xbt_dynar_foreach(processes, index, process) {
+ xbt_dynar_foreach(simix_global->process_to_run, index, process) {
xbt_os_sem_acquire(((smx_ctx_thread_t) process->context)->end);
}
- xbt_dynar_reset(processes);
}
static smx_context_t smx_ctx_thread_self(void)