+++ /dev/null
-/* 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 (c) 2007-2015. 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_core.h"
-
-#include "simgrid/simix.h" /* used implementation */
-#include "../simix/smx_private.h" /* FIXME */
-
-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;
- 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_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, 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_self_get_data(SIMIX_process_self());
- /* char*name = bprintf("%s#%p",SIMIX_process_self_get_name(), param); */
- res->s_process = simcall_process_create(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;
-}
-
-const char *xbt_thread_name(xbt_thread_t t)
-{
- return t->name;
-}
-
-const char *xbt_thread_self_name(void)
-{
- xbt_thread_t me = xbt_thread_self();
- return me ? me->name : "maestro";
-}
-
-
-void xbt_thread_join(xbt_thread_t thread)
-{
- 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)
-{
- simcall_process_kill(thread->s_process);
- free(thread->name);
- free(thread);
-}
-
-void xbt_thread_exit()
-{
- simcall_process_kill(SIMIX_process_self());
-}
-
-xbt_thread_t xbt_thread_self(void)
-{
- return SIMIX_process_self_get_data(SIMIX_process_self());
-}
-
-void xbt_thread_yield(void)
-{
- SIMIX_process_yield(SIMIX_process_self());
-}
-
-/****** mutex related functions ******/
-struct s_xbt_mutex_ {
- s_smx_mutex_t mutex;
-};
-
-xbt_mutex_t xbt_mutex_init(void)
-{
- return (xbt_mutex_t) simcall_mutex_init();
-}
-
-void xbt_mutex_acquire(xbt_mutex_t mutex)
-{
- simcall_mutex_lock((smx_mutex_t) mutex);
-}
-
-int xbt_mutex_try_acquire(xbt_mutex_t mutex)
-{
- return simcall_mutex_trylock((smx_mutex_t) mutex);
-}
-
-void xbt_mutex_release(xbt_mutex_t mutex)
-{
- simcall_mutex_unlock((smx_mutex_t) mutex);
-}
-
-void xbt_mutex_destroy(xbt_mutex_t mutex)
-{
- simcall_mutex_destroy((smx_mutex_t) mutex);
-}
-
-/***** condition related functions *****/
-struct s_xbt_cond_ {
- s_smx_cond_t cond;
-};
-
-xbt_cond_t xbt_cond_init(void)
-{
- return (xbt_cond_t) simcall_cond_init();
-}
-
-void xbt_cond_wait(xbt_cond_t cond, xbt_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)
-{
- simcall_cond_wait_timeout((smx_cond_t) cond, (smx_mutex_t) mutex, delay);
-}
-
-void xbt_cond_signal(xbt_cond_t cond)
-{
- simcall_cond_signal((smx_cond_t) cond);
-}
-
-void xbt_cond_broadcast(xbt_cond_t cond)
-{
- simcall_cond_broadcast((smx_cond_t) cond);
-}
-
-void xbt_cond_destroy(xbt_cond_t cond)
-{
- simcall_cond_destroy((smx_cond_t) cond);
-}
-
-/***** barrier related functions *****/
-typedef struct s_xbt_bar_ {
- xbt_mutex_t mutex;
- xbt_cond_t cond;
- unsigned int arrived_processes;
- unsigned int expected_processes;
-} s_xbt_bar_;
-
-xbt_bar_t xbt_barrier_init(unsigned int count)
-{
- xbt_bar_t bar = xbt_new0(s_xbt_bar_, 1);
- bar->expected_processes = count;
- bar->arrived_processes = 0;
- bar->mutex = xbt_mutex_init();
- bar->cond = xbt_cond_init();
- return bar;
-}
-
-
-int xbt_barrier_wait(xbt_bar_t bar)
-{
- int ret=0;
- xbt_mutex_acquire(bar->mutex);
- if (++bar->arrived_processes == bar->expected_processes) {
- xbt_cond_broadcast(bar->cond);
- xbt_mutex_release(bar->mutex);
- ret=XBT_BARRIER_SERIAL_PROCESS;
- bar->arrived_processes = 0;
- } else {
- xbt_cond_wait(bar->cond, bar->mutex);
- xbt_mutex_release(bar->mutex);
- }
-
- return ret;
-}
-
-void xbt_barrier_destroy(xbt_bar_t bar)
-{
- xbt_mutex_destroy(bar->mutex);
- xbt_cond_destroy(bar->cond);
- xbt_free(bar);
-}
-
