-/* $Id$ */
-
/* xbt_synchro -- Synchronization virtualized depending on whether we are */
/* in simulation or real life (act on simulated processes) */
/* This is the simulation implementation, using simix. */
-/* Copyright 2006,2007 Malek Cherier, Martin Quinson
- * All right reserved. */
+/* Copyright (c) 2007, 2008, 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. */
#include "xbt/ex.h"
-#include "xbt/synchro.h" /* This module */
+#include "simgrid/simix.h" /* used implementation */
+#include "../simix/smx_private.h" /* FIXME */
-#include "simix/simix.h" /* used implementation */
-#include "simix/datatypes.h"
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_sync, xbt,
+ "Synchronization mechanism");
/* the implementation would be cleaner (and faster) with ELF symbol aliasing */
typedef struct s_xbt_thread_ {
+ smx_process_t s_process; /* keep this first, gras_socket_im_the_server() does funky transtyping in sg_msg.c */
char *name;
- smx_process_t s_process;
void_f_pvoid_t code;
void *userparam;
void *father_data;
+ /* stuff to allow other people to wait on me with xbt_thread_join */
+ unsigned joinable:1, done:1;
+ xbt_cond_t cond;
+ xbt_mutex_t mutex;
} s_xbt_thread_t;
static int xbt_thread_create_wrapper(int argc, char *argv[])
{
+ smx_process_t self = SIMIX_process_self();
xbt_thread_t t =
- (xbt_thread_t) SIMIX_process_get_data(SIMIX_process_self());
- SIMIX_process_set_data(SIMIX_process_self(), t->father_data);
- (*t->code) (t->userparam);
- free(t->name);
- free(t);
+ (xbt_thread_t) SIMIX_process_self_get_data(self);
+ simcall_process_set_data(self, t->father_data);
+ t->code(t->userparam);
+ if (t->joinable) {
+ t->done = 1;
+ xbt_mutex_acquire(t->mutex);
+ xbt_cond_broadcast(t->cond);
+ xbt_mutex_release(t->mutex);
+ } else {
+ xbt_mutex_destroy(t->mutex);
+ xbt_cond_destroy(t->cond);
+ free(t->name);
+ free(t);
+ }
return 0;
}
xbt_thread_t xbt_thread_create(const char *name, void_f_pvoid_t code,
- void *param)
+ void *param, int joinable)
{
xbt_thread_t res = xbt_new0(s_xbt_thread_t, 1);
res->name = xbt_strdup(name);
res->userparam = param;
res->code = code;
- res->father_data = SIMIX_process_get_data(SIMIX_process_self());
- // char*name = bprintf("%s#%p",SIMIX_process_get_name(SIMIX_process_self()), param);
- res->s_process = SIMIX_process_create(name,
- xbt_thread_create_wrapper, res,
- SIMIX_host_get_name(SIMIX_host_self
- ()), 0, NULL,
- /*props */ NULL);
+ res->father_data = SIMIX_process_self_get_data(SIMIX_process_self());
+ /* char*name = bprintf("%s#%p",SIMIX_process_self_get_name(), param); */
+ simcall_process_create(&res->s_process, name,
+ xbt_thread_create_wrapper, res,
+ SIMIX_host_self_get_name(), -1.0, 0, NULL,
+ /*props */ NULL,0);
+ res->joinable = joinable;
+ res->done = 0;
+ res->cond = xbt_cond_init();
+ res->mutex = xbt_mutex_init();
// free(name);
return res;
}
void xbt_thread_join(xbt_thread_t thread)
{
- THROW_UNIMPLEMENTED; /* FIXME */
+ xbt_mutex_acquire(thread->mutex);
+ xbt_assert(thread->joinable,
+ "Cannot join on %p: wasn't created joinable", thread);
+ if (!thread->done) {
+ xbt_cond_wait(thread->cond, thread->mutex);
+ xbt_mutex_release(thread->mutex);
+ }
+
+ xbt_mutex_destroy(thread->mutex);
+ xbt_cond_destroy(thread->cond);
+ free(thread->name);
+ free(thread);
+
}
void xbt_thread_cancel(xbt_thread_t thread)
{
- SIMIX_process_kill(thread->s_process);
+ simcall_process_kill(thread->s_process);
free(thread->name);
free(thread);
}
void xbt_thread_exit()
{
- xbt_thread_t me = SIMIX_process_get_data(SIMIX_process_self());
- SIMIX_process_kill(me->s_process);
- free(me);
+ simcall_process_kill(SIMIX_process_self());
}
xbt_thread_t xbt_thread_self(void)
{
- smx_process_t p = SIMIX_process_self();
- return p ? SIMIX_process_get_data(p) : NULL;
+ return SIMIX_process_self_get_data(SIMIX_process_self());
}
void xbt_thread_yield(void)
{
- THROW_UNIMPLEMENTED; /* FIXME */
+ SIMIX_process_yield(SIMIX_process_self());
}
/****** mutex related functions ******/
struct s_xbt_mutex_ {
-
- /* KEEP IT IN SYNC WITH src/simix/private.h::struct s_smx_mutex */
- xbt_swag_t sleeping; /* list of sleeping process */
- int refcount;
- /* KEEP IT IN SYNC WITH src/simix/private.h::struct s_smx_mutex */
-
+ s_smx_mutex_t mutex;
};
xbt_mutex_t xbt_mutex_init(void)
{
- return (xbt_mutex_t) SIMIX_mutex_init();
+ return (xbt_mutex_t) simcall_mutex_init();
}
void xbt_mutex_acquire(xbt_mutex_t mutex)
{
- SIMIX_mutex_lock((smx_mutex_t) mutex);
+ simcall_mutex_lock((smx_mutex_t) mutex);
}
void xbt_mutex_release(xbt_mutex_t mutex)
{
- SIMIX_mutex_unlock((smx_mutex_t) mutex);
+ simcall_mutex_unlock((smx_mutex_t) mutex);
}
void xbt_mutex_destroy(xbt_mutex_t mutex)
{
- SIMIX_mutex_destroy((smx_mutex_t) mutex);
+ simcall_mutex_destroy((smx_mutex_t) mutex);
}
/***** condition related functions *****/
struct s_xbt_cond_ {
-
- /* KEEP IT IN SYNC WITH src/simix/private.h::struct s_smx_cond */
- xbt_swag_t sleeping; /* list of sleeping process */
- smx_mutex_t mutex;
- xbt_fifo_t actions; /* list of actions */
- /* KEEP IT IN SYNC WITH src/simix/private.h::struct s_smx_cond */
-
+ s_smx_cond_t cond;
};
xbt_cond_t xbt_cond_init(void)
{
- return (xbt_cond_t) SIMIX_cond_init();
+ return (xbt_cond_t) simcall_cond_init();
}
void xbt_cond_wait(xbt_cond_t cond, xbt_mutex_t mutex)
{
- SIMIX_cond_wait((smx_cond_t) cond, (smx_mutex_t) mutex);
+ simcall_cond_wait((smx_cond_t) cond, (smx_mutex_t) mutex);
}
void xbt_cond_timedwait(xbt_cond_t cond, xbt_mutex_t mutex, double delay)
{
- SIMIX_cond_wait_timeout((smx_cond_t) cond, (smx_mutex_t) mutex, delay);
+ simcall_cond_wait_timeout((smx_cond_t) cond, (smx_mutex_t) mutex, delay);
}
void xbt_cond_signal(xbt_cond_t cond)
{
- SIMIX_cond_signal((smx_cond_t) cond);
+ simcall_cond_signal((smx_cond_t) cond);
}
void xbt_cond_broadcast(xbt_cond_t cond)
{
- SIMIX_cond_broadcast((smx_cond_t) cond);
+ simcall_cond_broadcast((smx_cond_t) cond);
}
void xbt_cond_destroy(xbt_cond_t cond)
{
- SIMIX_cond_destroy((smx_cond_t) cond);
+ simcall_cond_destroy((smx_cond_t) cond);
}
