* under the terms of the license (GNU LGPL) which comes with this package. */
#include "simix/private.h"
+#include "xbt/parmap.h"
+
#ifdef HAVE_VALGRIND_VALGRIND_H
# include <valgrind/valgrind.h>
#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);
-static void smx_ctx_raw_wrapper(smx_ctx_raw_t context);
+static xbt_parmap_t parmap;
+
+#ifdef CONTEXT_THREADS
+static __thread smx_context_t current_context;
+#endif
+static void smx_ctx_raw_wrapper(smx_ctx_raw_t context);
static int smx_ctx_raw_factory_finalize(smx_context_factory_t *factory)
{
+ if(parmap)
+ xbt_parmap_destroy(parmap);
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{
maestro_raw_context = context;
+ current_context = (smx_context_t) maestro_raw_context;
}
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);
}
static void smx_ctx_raw_runall(xbt_dynar_t processes)
{
smx_process_t process;
+ unsigned int cursor;
- while (xbt_dynar_length(processes)){
- process = xbt_dynar_pop_as(processes,smx_process_t);
+ xbt_dynar_foreach(processes, cursor, process) {
+ DEBUG2("Schedule item %u of %lu",cursor,xbt_dynar_length(processes));
smx_ctx_raw_resume(process->context);
}
+ xbt_dynar_reset(processes);
}
-static void smx_ctx_raw_resume_parallel(smx_context_t context)
+static void smx_ctx_raw_resume_parallel(smx_process_t process)
{
- xbt_os_thread_set_extra_data(context);
+ smx_ctx_raw_t context = (smx_ctx_raw_t)process->context;
+ current_context = (smx_context_t)context;
raw_swapcontext(
- &((smx_ctx_raw_t) context)->old_stack_top,
- ((smx_ctx_raw_t) context)->stack_top);
- xbt_os_thread_set_extra_data(NULL);
+ &context->old_stack_top,
+ context->stack_top);
+ current_context = (smx_context_t)maestro_raw_context;
}
static void smx_ctx_raw_runall_parallel(xbt_dynar_t processes)
{
- return;
+ xbt_parmap_apply(parmap, (void_f_pvoid_t)smx_ctx_raw_resume_parallel, processes);
+ xbt_dynar_reset(processes);
}
static smx_context_t smx_ctx_raw_self_parallel(void)
{
- 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;
+ return current_context;
+}
+
+static int smx_ctx_raw_get_thread_id(){
+ return (int)(unsigned long)xbt_os_thread_get_extra_data();
}
void SIMIX_ctx_raw_factory_init(smx_context_factory_t *factory)
(*factory)->suspend = smx_ctx_raw_suspend;
(*factory)->name = "smx_raw_context_factory";
- if(_surf_parallel_contexts){
+ if (SIMIX_context_is_parallel()) {
#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;
+ (*factory)->get_thread_id = smx_ctx_raw_get_thread_id;
#else
THROW0(arg_error, 0, "No thread support for parallel context execution");
#endif
- }else{
+ } else {
(*factory)->runall = smx_ctx_raw_runall;
}
}
