-/* $Id$ */
-
/* 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) 2007-2015. 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 "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_ {
- /* KEEP IT IN SYNC WITH s_smx_process_ from src/include/simix/datatypes.h */
- char *name; /**< @brief process name if any */
- smx_simdata_process_t simdata; /**< @brief simulator data */
- s_xbt_swag_hookup_t process_hookup;
- s_xbt_swag_hookup_t synchro_hookup;
- s_xbt_swag_hookup_t host_proc_hookup;
- void *data; /**< @brief user data */
- /* KEEP IT IN SYNC WITH s_smx_process_ from src/include/simix/datatypes.h */
+ 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;
-xbt_thread_t xbt_thread_create(pvoid_f_pvoid_t start_routine, void* param) {
- THROW_UNIMPLEMENTED; /* FIXME */
+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,void ** thread_return) {
- THROW_UNIMPLEMENTED; /* FIXME */
-}
-void xbt_thread_exit(int *retval) {
- THROW_UNIMPLEMENTED; /* FIXME */
+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);
}
-xbt_thread_t xbt_thread_self(void) {
- THROW_UNIMPLEMENTED; /* FIXME */
+void xbt_thread_exit()
+{
+ simcall_process_kill(SIMIX_process_self());
}
-void xbt_thread_yield(void) {
- THROW_UNIMPLEMENTED; /* FIXME */
+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_ {
-
- /* KEEP IT IN SYNC WITH src/simix/private.h::struct s_smx_mutex */
- xbt_swag_t sleeping; /* list of sleeping process */
- int using;
- /* 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();
+xbt_mutex_t xbt_mutex_init(void)
+{
+ return (xbt_mutex_t) simcall_mutex_init();
}
-void xbt_mutex_lock(xbt_mutex_t mutex) {
- SIMIX_mutex_lock( (smx_mutex_t)mutex) ;
+void xbt_mutex_acquire(xbt_mutex_t mutex)
+{
+ simcall_mutex_lock((smx_mutex_t) mutex);
}
-void xbt_mutex_unlock(xbt_mutex_t mutex) {
- SIMIX_mutex_unlock( (smx_mutex_t)mutex );
+int xbt_mutex_try_acquire(xbt_mutex_t mutex)
+{
+ return simcall_mutex_trylock((smx_mutex_t) mutex);
}
-void xbt_mutex_destroy(xbt_mutex_t mutex) {
- SIMIX_mutex_destroy( (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_ {
-
- /* 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();
+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) {
- SIMIX_cond_wait( (smx_cond_t)cond , (smx_mutex_t)mutex );
+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) {
- SIMIX_cond_wait_timeout( (smx_cond_t)cond , (smx_mutex_t)mutex, delay );
+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) {
- SIMIX_cond_signal( (smx_cond_t)cond );
+void xbt_cond_signal(xbt_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 );
+
+void xbt_cond_broadcast(xbt_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 );
+
+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);
+}
+