#include "xbt/log.h"
#include "smx_private.h"
-#include "internal_config.h"
+#include "src/internal_config.h"
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
typedef struct s_smx_ctx_boost {
s_smx_ctx_base_t super; /* Fields of super implementation */
+#if HAVE_BOOST_CONTEXT == 1
boost::context::fcontext_t* fc;
+#else
+ boost::context::fcontext_t fc;
+#endif
void* stack;
} s_smx_ctx_boost_t, *smx_ctx_boost_t;
static void smx_ctx_boost_resume_serial(smx_process_t first_process);
static void smx_ctx_boost_runall_serial(void);
+#ifdef CONTEXT_THREADS
+static void smx_ctx_boost_stop_parallel(smx_context_t context);
+static void smx_ctx_boost_suspend_parallel(smx_context_t context);
+static void smx_ctx_boost_resume_parallel(smx_process_t first_process);
+static void smx_ctx_boost_runall_parallel(void);
+#endif
+
+#ifdef CONTEXT_THREADS
+static xbt_parmap_t boost_parmap;
+static smx_ctx_boost_t* boost_workers_context;
+static unsigned long boost_threads_working;
+static xbt_os_thread_key_t boost_worker_id_key;
+#endif
+
static unsigned long boost_process_index = 0;
-static boost::context::fcontext_t boost_maestro_fcontext;
static smx_ctx_boost_t boost_maestro_context;
void SIMIX_ctx_boost_factory_init(smx_context_factory_t *factory)
(*factory)->name = "smx_boost_context_factory";
if (SIMIX_context_is_parallel()) {
+#ifndef CONTEXT_THREADS
THROWF(arg_error, 0, "No thread support for parallel context execution");
+#else
+ int nthreads = SIMIX_context_get_nthreads();
+ boost_parmap = xbt_parmap_new(nthreads, SIMIX_context_get_parallel_mode());
+ boost_workers_context = xbt_new(smx_ctx_boost_t, nthreads);
+ boost_maestro_context = NULL;
+
+ xbt_os_thread_key_create(&boost_worker_id_key);
+
+ (*factory)->stop = smx_ctx_boost_stop_parallel;
+ (*factory)->suspend = smx_ctx_boost_suspend_parallel;
+ (*factory)->runall = smx_ctx_boost_runall_parallel;
+#endif
} else {
(*factory)->stop = smx_ctx_boost_stop_serial;
(*factory)->suspend = smx_ctx_boost_suspend_serial;
static int smx_ctx_boost_factory_finalize(smx_context_factory_t *factory)
{
+#ifdef CONTEXT_THREADS
+ if (boost_parmap) {
+ xbt_parmap_destroy(boost_parmap);
+ boost_parmap = nullptr;
+ }
+ xbt_free(boost_workers_context);
+ boost_workers_context = nullptr;
+#endif
return smx_ctx_base_factory_finalize(factory);
}
#else
void* stack = context->stack;
#endif
- context->fc = boost::context::make_fcontext(
+ context->fc = boost::context::make_fcontext(
stack,
smx_context_usable_stack_size,
smx_ctx_boost_wrapper);
- } else if (process != nullptr && boost_maestro_context == nullptr) {
+ } else {
context->stack = nullptr;
- context->fc = &boost_maestro_fcontext;
- boost_maestro_context = context;
+#if HAVE_BOOST_CONTEXT == 1
+ context->fc = new boost::context::fcontext_t();
+#endif
+ if (boost_maestro_context == nullptr)
+ boost_maestro_context = context;
}
return (smx_context_t) context;
smx_ctx_boost_t context = (smx_ctx_boost_t) c;
if (!context)
return;
+#if HAVE_BOOST_CONTEXT == 1
+ if (!context->stack)
+ delete context->fc;
+#endif
if ((smx_ctx_boost_t) c == boost_maestro_context)
boost_maestro_context = nullptr;
SIMIX_context_stack_delete(context->stack);
next_context = (smx_ctx_boost_t) boost_maestro_context;
}
SIMIX_context_set_current((smx_context_t) next_context);
+#if HAVE_BOOST_CONTEXT == 1
boost::context::jump_fcontext(
((smx_ctx_boost_t)context)->fc, next_context->fc, (intptr_t)next_context);
+#else
+ boost::context::jump_fcontext(
+ &((smx_ctx_boost_t)context)->fc, next_context->fc, (intptr_t)next_context);
+#endif
}
static void smx_ctx_boost_resume_serial(smx_process_t first_process)
{
smx_ctx_boost_t context = (smx_ctx_boost_t) first_process->context;
SIMIX_context_set_current((smx_context_t) context);
+#if HAVE_BOOST_CONTEXT == 1
boost::context::jump_fcontext(boost_maestro_context->fc, context->fc,
(intptr_t)context);
+#else
+ boost::context::jump_fcontext(&boost_maestro_context->fc, context->fc,
+ (intptr_t)context);
+#endif
}
static void smx_ctx_boost_runall_serial(void)
/* execute the first process */
smx_ctx_boost_resume_serial(first_process);
}
+
+// **** Parallel code
+
+#ifdef CONTEXT_THREADS
+
+static void smx_ctx_boost_stop_parallel(smx_context_t context)
+{
+ smx_ctx_base_stop(context);
+ smx_ctx_boost_suspend_parallel(context);
+}
+
+static void smx_ctx_boost_suspend_parallel(smx_context_t context)
+{
+ smx_process_t next_work = (smx_process_t) xbt_parmap_next(boost_parmap);
+ smx_ctx_boost_t next_context;
+
+ if (next_work != NULL) {
+ XBT_DEBUG("Run next process");
+ next_context = (smx_ctx_boost_t) next_work->context;
+ }
+ else {
+ XBT_DEBUG("No more processes to run");
+ unsigned long worker_id =
+ (unsigned long) xbt_os_thread_get_specific(boost_worker_id_key);
+ next_context = boost_workers_context[worker_id];
+ }
+
+ SIMIX_context_set_current((smx_context_t) next_context);
+#if HAVE_BOOST_CONTEXT == 1
+ boost::context::jump_fcontext(
+ ((smx_ctx_boost_t)context)->fc, next_context->fc, (intptr_t)next_context);
+#else
+ boost::context::jump_fcontext(
+ &((smx_ctx_boost_t)context)->fc, next_context->fc, (intptr_t)next_context);
+#endif
+}
+
+static void smx_ctx_boost_resume_parallel(smx_process_t process)
+{
+ unsigned long worker_id = __sync_fetch_and_add(&boost_threads_working, 1);
+ xbt_os_thread_set_specific(boost_worker_id_key, (void*) worker_id);
+
+ smx_ctx_boost_t worker_context = (smx_ctx_boost_t)SIMIX_context_self();
+ boost_workers_context[worker_id] = worker_context;
+ smx_ctx_boost_t context = (smx_ctx_boost_t) process->context;
+
+ SIMIX_context_set_current((smx_context_t) context);
+#if HAVE_BOOST_CONTEXT == 1
+ boost::context::jump_fcontext(worker_context->fc, context->fc,
+ (intptr_t)context);
+#else
+ boost::context::jump_fcontext(&worker_context->fc, context->fc,
+ (intptr_t)context);
+#endif
+}
+
+static void smx_ctx_boost_runall_parallel(void)
+{
+ boost_threads_working = 0;
+ xbt_parmap_apply(boost_parmap, (void_f_pvoid_t) smx_ctx_boost_resume_parallel,
+ simix_global->process_to_run);
+}
+
+#endif
