#include "ucontext.h"
#endif
-/* lower this if you want to reduce the memory consumption */
-#ifndef CONTEXT_STACK_SIZE /* allow lua to override this */
-#define CONTEXT_STACK_SIZE 128*1024
-#endif /*CONTEXT_STACK_SIZE */
-
-
typedef char * raw_stack_t;
typedef void (*rawctx_entry_point_t)(void *);
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
+#ifdef CONTEXT_THREADS
static xbt_parmap_t parmap;
+#endif
+
+static smx_context_factory_t raw_factory;
+
+#include "xbt/xbt_os_time.h"
+static xbt_os_timer_t timer;
+static double totaltime = 0;
+
static void smx_ctx_raw_wrapper(smx_ctx_raw_t context);
static int smx_ctx_raw_factory_finalize(smx_context_factory_t *factory)
{
+ XBT_VERB("Total User Time: %lf", totaltime);
+#ifdef CONTEXT_THREADS
if(parmap)
xbt_parmap_destroy(parmap);
+#endif
return smx_ctx_base_factory_finalize(factory);
}
+
static smx_context_t
-smx_ctx_raw_create_context_sized(size_t size, xbt_main_func_t code,
- int argc, char **argv,
+smx_ctx_raw_create_context(xbt_main_func_t code, int argc, char **argv,
void_pfn_smxprocess_t cleanup_func,
void *data)
{
smx_ctx_raw_t context =
- (smx_ctx_raw_t) smx_ctx_base_factory_create_context_sized(size,
+ (smx_ctx_raw_t) smx_ctx_base_factory_create_context_sized(
+ sizeof(s_smx_ctx_raw_t),
code,
argc,
argv,
/* If the user provided a function for the process then use it
otherwise is the context for maestro */
if (code) {
- context->malloced_stack = xbt_malloc0(CONTEXT_STACK_SIZE);
+ context->malloced_stack = xbt_malloc0(smx_context_stack_size);
context->stack_top =
- raw_makecontext(context->malloced_stack,CONTEXT_STACK_SIZE,
+ raw_makecontext(context->malloced_stack, smx_context_stack_size,
(void(*)(void*))smx_ctx_raw_wrapper,context);
#ifdef HAVE_VALGRIND_VALGRIND_H
context->valgrind_stack_id =
VALGRIND_STACK_REGISTER(context->malloced_stack,
- context->malloced_stack + CONTEXT_STACK_SIZE);
+ context->malloced_stack + smx_context_stack_size);
#endif /* HAVE_VALGRIND_VALGRIND_H */
}else{
}
return (smx_context_t) context;
-
-}
-
-static smx_context_t
-smx_ctx_raw_create_context(xbt_main_func_t code, int argc, char **argv,
- void_pfn_smxprocess_t cleanup_func,
- void *data)
-{
-
- return smx_ctx_raw_create_context_sized(sizeof(s_smx_ctx_raw_t),
- code, argc, argv, cleanup_func,
- data);
-
}
static void smx_ctx_raw_free(smx_context_t context)
context)->valgrind_stack_id);
#endif /* HAVE_VALGRIND_VALGRIND_H */
+ free(((smx_ctx_raw_t)context)->malloced_stack);
}
smx_ctx_base_free(context);
}
smx_ctx_raw_stop((smx_context_t) context);
}
-static void smx_ctx_raw_resume(smx_context_t context)
+static void smx_ctx_raw_resume(smx_process_t process)
{
- smx_current_context = context;
+ smx_ctx_raw_t context = (smx_ctx_raw_t)process->context;
+ smx_current_context = (smx_context_t)context;
raw_swapcontext(
&((smx_ctx_raw_t) context)->old_stack_top,
((smx_ctx_raw_t) context)->stack_top);
}
-static void smx_ctx_raw_runall(xbt_dynar_t processes)
+static void smx_ctx_raw_runall_serial(xbt_dynar_t processes)
{
smx_process_t process;
unsigned int cursor;
xbt_dynar_foreach(processes, cursor, process) {
- DEBUG2("Schedule item %u of %lu",cursor,xbt_dynar_length(processes));
- smx_ctx_raw_resume(process->context);
+ XBT_DEBUG("Schedule item %u of %lu",cursor,xbt_dynar_length(processes));
+ xbt_os_timer_start(timer);
+ smx_ctx_raw_resume(process);
+ xbt_os_timer_stop(timer);
+ totaltime += xbt_os_timer_elapsed(timer);
}
xbt_dynar_reset(processes);
}
-static void smx_ctx_raw_resume_parallel(smx_process_t process)
+static void smx_ctx_raw_runall_parallel(xbt_dynar_t processes)
{
- smx_ctx_raw_t context = (smx_ctx_raw_t)process->context;
- xbt_os_thread_set_extra_data(context);
- raw_swapcontext(
- &context->old_stack_top,
- context->stack_top);
- xbt_os_thread_set_extra_data(NULL);
+#ifdef CONTEXT_THREADS
+ xbt_parmap_apply(parmap, (void_f_pvoid_t)smx_ctx_raw_resume, processes);
+#endif
+ xbt_dynar_reset(processes);
}
-static void smx_ctx_raw_runall_parallel(xbt_dynar_t processes)
+static smx_context_t smx_ctx_raw_self_parallel(void)
{
- xbt_parmap_apply(parmap, (void_f_pvoid_t)smx_ctx_raw_resume_parallel, processes);
- xbt_dynar_reset(processes);
+ return smx_current_context;
}
-static smx_context_t smx_ctx_raw_self_parallel(void)
+static int smx_ctx_raw_get_thread_id(){
+ return (int)(unsigned long)xbt_os_thread_get_extra_data();
+}
+
+static void smx_ctx_raw_runall(xbt_dynar_t processes)
{
- smx_context_t self_context = (smx_context_t) xbt_os_thread_get_extra_data();
- return self_context ? self_context : (smx_context_t) maestro_raw_context;
+ if (xbt_dynar_length(processes) >= SIMIX_context_get_parallel_threshold()) {
+ XBT_DEBUG("Runall // %lu", xbt_dynar_length(processes));
+ raw_factory->self = smx_ctx_raw_self_parallel;
+ raw_factory->get_thread_id = smx_ctx_raw_get_thread_id;
+ smx_ctx_raw_runall_parallel(processes);
+ } else {
+ XBT_DEBUG("Runall serial %lu", xbt_dynar_length(processes));
+ raw_factory->self = smx_ctx_base_self;
+ raw_factory->get_thread_id = smx_ctx_base_get_thread_id;
+ smx_ctx_raw_runall_serial(processes);
+ }
}
void SIMIX_ctx_raw_factory_init(smx_context_factory_t *factory)
{
- VERB0("Using raw contexts. Because the glibc is just not good enough for us.");
+ XBT_VERB("Using raw contexts. Because the glibc is just not good enough for us.");
smx_ctx_base_factory_init(factory);
(*factory)->finalize = smx_ctx_raw_factory_finalize;
(*factory)->stop = smx_ctx_raw_stop;
(*factory)->suspend = smx_ctx_raw_suspend;
(*factory)->name = "smx_raw_context_factory";
-
- if(_surf_parallel_contexts){
-#ifdef CONTEXT_THREADS /* To use parallel ucontexts a thread pool is needed */
- parmap = xbt_parmap_new(2);
- (*factory)->runall = smx_ctx_raw_runall_parallel;
- (*factory)->self = smx_ctx_raw_self_parallel;
-#else
- THROW0(arg_error, 0, "No thread support for parallel context execution");
+#ifdef CONTEXT_THREADS
+ parmap = xbt_parmap_new(2);
#endif
- }else{
- (*factory)->runall = smx_ctx_raw_runall;
+ if (SIMIX_context_is_parallel()) {
+ if (SIMIX_context_get_parallel_threshold() > 1) {
+ /* choose dynamically */
+ (*factory)->runall = smx_ctx_raw_runall;
+ }
+ else {
+ /* always parallel */
+ (*factory)->self = smx_ctx_raw_self_parallel;
+ (*factory)->get_thread_id = smx_ctx_raw_get_thread_id;
+ (*factory)->runall = smx_ctx_raw_runall_parallel;
+ }
}
+ else {
+ /* always serial */
+ (*factory)->self = smx_ctx_base_self;
+ (*factory)->get_thread_id = smx_ctx_base_get_thread_id;
+ (*factory)->runall = smx_ctx_raw_runall_serial;
+ }
+ raw_factory = *factory;
+
+ timer = xbt_os_timer_new();
}
