/* 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 <stdarg.h>
+
#include "smx_context_sysv_private.h"
-#include "xbt/threadpool.h"
+#include "xbt/parmap.h"
#include "simix/private.h"
+#include "gras_config.h"
#ifdef HAVE_VALGRIND_VALGRIND_H
# include <valgrind/valgrind.h>
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
-static xbt_tpool_t tpool;
+#ifdef CONTEXT_THREADS
+static xbt_parmap_t parmap;
+#endif
static smx_context_t
smx_ctx_sysv_create_context(xbt_main_func_t code, int argc, char **argv,
void_pfn_smxprocess_t cleanup_func, void* data);
-
-static void smx_ctx_sysv_wrapper(smx_ctx_sysv_t context);
+static void smx_ctx_sysv_wrapper(int count, ...);
+
+/* This is a bit paranoid about SIZEOF_VOIDP not being a multiple of SIZEOF_INT,
+ * but it doesn't harm. */
+#define CTX_ADDR_LEN (SIZEOF_VOIDP / SIZEOF_INT + !!(SIZEOF_VOIDP % SIZEOF_INT))
+union u_ctx_addr {
+ void *addr;
+ int intv[CTX_ADDR_LEN];
+};
+#if (CTX_ADDR_LEN == 1)
+# define CTX_ADDR_SPLIT(u) (u).intv[0]
+#elif (CTX_ADDR_LEN == 2)
+# define CTX_ADDR_SPLIT(u) (u).intv[0], (u).intv[1]
+#else
+# error Your architecture is not supported yet
+#endif
void SIMIX_ctx_sysv_factory_init(smx_context_factory_t *factory)
{
smx_ctx_base_factory_init(factory);
+ VERB0("Activating SYSV context factory");
(*factory)->finalize = smx_ctx_sysv_factory_finalize;
(*factory)->create_context = smx_ctx_sysv_create_context;
(*factory)->suspend = smx_ctx_sysv_suspend;
(*factory)->name = "smx_sysv_context_factory";
- if(_surf_parallel_contexts){
- tpool = xbt_tpool_new(2, 10);
+ 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_sysv_runall_parallel;
+ (*factory)->self = smx_ctx_sysv_self_parallel;
+ (*factory)->get_thread_id = smx_ctx_sysv_get_thread_id;
+#else
+ THROW0(arg_error, 0, "No thread support for parallel context execution");
+#endif
}else{
(*factory)->runall = smx_ctx_sysv_runall;
}
int smx_ctx_sysv_factory_finalize(smx_context_factory_t *factory)
{
- if(tpool)
- xbt_tpool_destroy(tpool);
+ if(parmap)
+ xbt_parmap_destroy(parmap);
return smx_ctx_base_factory_finalize(factory);
}
void_pfn_smxprocess_t cleanup_func,
void *data)
{
-
+ union u_ctx_addr ctx_addr;
smx_ctx_sysv_t context =
(smx_ctx_sysv_t) smx_ctx_base_factory_create_context_sized(size,
code,
context->uc.uc_link = NULL;
context->uc.uc_stack.ss_sp =
- pth_skaddr_makecontext(context->stack, CONTEXT_STACK_SIZE);
+ pth_skaddr_makecontext(context->stack, smx_context_stack_size);
context->uc.uc_stack.ss_size =
- pth_sksize_makecontext(context->stack, CONTEXT_STACK_SIZE);
+ pth_sksize_makecontext(context->stack, smx_context_stack_size);
#ifdef HAVE_VALGRIND_VALGRIND_H
context->valgrind_stack_id =
((char *) context->uc.uc_stack.ss_sp) +
context->uc.uc_stack.ss_size);
#endif /* HAVE_VALGRIND_VALGRIND_H */
-
- makecontext(&((smx_ctx_sysv_t) context)->uc, (void (*)())smx_ctx_sysv_wrapper,
- sizeof(void*)/sizeof(int), context);
+ ctx_addr.addr = context;
+ makecontext(&context->uc, (void (*)())smx_ctx_sysv_wrapper,
+ CTX_ADDR_LEN, CTX_ADDR_SPLIT(ctx_addr));
+ }else{
+ maestro_context = context;
}
return (smx_context_t) context;
void *data)
{
- return smx_ctx_sysv_create_context_sized(sizeof(s_smx_ctx_sysv_t),
+ return smx_ctx_sysv_create_context_sized(sizeof(s_smx_ctx_sysv_t) + smx_context_stack_size,
code, argc, argv, cleanup_func,
data);
void smx_ctx_sysv_stop(smx_context_t context)
{
smx_ctx_base_stop(context);
-
smx_ctx_sysv_suspend(context);
}
-void smx_ctx_sysv_wrapper(smx_ctx_sysv_t context)
+void smx_ctx_sysv_wrapper(int first, ...)
{
+ union u_ctx_addr ctx_addr;
+ smx_ctx_sysv_t context;
+
+ ctx_addr.intv[0] = first;
+ if (CTX_ADDR_LEN > 1) {
+ va_list ap;
+ int i;
+ va_start(ap, first);
+ for(i = 1; i < CTX_ADDR_LEN; i++)
+ ctx_addr.intv[i] = va_arg(ap, int);
+ va_end(ap);
+ }
+ context = ctx_addr.addr;
(context->super.code) (context->super.argc, context->super.argv);
smx_ctx_sysv_stop((smx_context_t) context);
void smx_ctx_sysv_suspend(smx_context_t context)
{
- ucontext_t maestro_ctx =
- ((smx_ctx_sysv_t) simix_global->maestro_process->context)->uc;
-
- int rv = swapcontext(&((smx_ctx_sysv_t) context)->uc, &maestro_ctx);
+ smx_current_context = (smx_context_t)maestro_context;
+ int rv = swapcontext(&((smx_ctx_sysv_t) context)->uc, &((smx_ctx_sysv_t)context)->old_uc);
xbt_assert0((rv == 0), "Context swapping failure");
}
-void smx_ctx_sysv_resume(smx_context_t new_context)
+void smx_ctx_sysv_resume(smx_context_t context)
{
- smx_ctx_sysv_t maestro =
- (smx_ctx_sysv_t) simix_global->maestro_process->context;
-
- int rv =
- swapcontext(&(maestro->uc), &((smx_ctx_sysv_t) new_context)->uc);
+ smx_current_context = context;
+ int rv = swapcontext(&((smx_ctx_sysv_t)context)->old_uc, &((smx_ctx_sysv_t) context)->uc);
xbt_assert0((rv == 0), "Context swapping failure");
}
-void smx_ctx_sysv_runall(xbt_swag_t processes)
+void smx_ctx_sysv_runall(xbt_dynar_t processes)
{
- smx_context_t old_context;
smx_process_t process;
-
- while ((process = xbt_swag_extract(processes))) {
- old_context = smx_current_context;
- smx_current_context = process->context;
- smx_ctx_sysv_resume(smx_current_context);
- smx_current_context = old_context;
+ unsigned int cursor;
+
+ xbt_dynar_foreach(processes, cursor, process) {
+ DEBUG2("Schedule item %u of %lu",cursor,xbt_dynar_length(processes));
+ smx_ctx_sysv_resume(process->context);
}
+ xbt_dynar_reset(processes);
}
-void smx_ctx_sysv_runall_parallel(xbt_swag_t processes)
+void smx_ctx_sysv_resume_parallel(smx_process_t process)
{
- smx_process_t process;
- while((process = xbt_swag_extract(processes))){
- xbt_tpool_queue_job(tpool, (void_f_pvoid_t)smx_ctx_sysv_resume, process->context);
- }
-}
\ No newline at end of file
+ smx_context_t context = process->context;
+ smx_current_context = (smx_context_t)context;
+ int rv = swapcontext(&((smx_ctx_sysv_t)context)->old_uc, &((smx_ctx_sysv_t) context)->uc);
+ smx_current_context = (smx_context_t)maestro_context;
+
+ xbt_assert0((rv == 0), "Context swapping failure");
+}
+
+void smx_ctx_sysv_runall_parallel(xbt_dynar_t processes)
+{
+ xbt_parmap_apply(parmap, (void_f_pvoid_t)smx_ctx_sysv_resume_parallel, processes);
+ xbt_dynar_reset(processes);
+}
+
+smx_context_t smx_ctx_sysv_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_context;*/
+ return smx_current_context;
+}
+
+int smx_ctx_sysv_get_thread_id(void)
+{
+ return (int)(unsigned long)xbt_os_thread_get_extra_data();
+}
