-/* context_sysv - context switching with ucontextes from System V */
+/* context_sysv - context switching with ucontexts from System V */
-/* Copyright (c) 2009, 2010. The SimGrid Team.
+/* Copyright (c) 2009-2013. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
#include "xbt/parmap.h"
#include "smx_private.h"
-#include "gras_config.h"
+#include "internal_config.h"
#include "context_sysv_config.h" /* loads context system definitions */
+#include "mc/mc.h"
#ifdef _XBT_WIN32
# include <win32_ucontext.h> /* context relative declarations */
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
+typedef struct s_smx_ctx_sysv {
+ s_smx_ctx_base_t super; /* Fields of super implementation */
+ ucontext_t uc; /* the ucontext that executes the code */
+#ifdef HAVE_VALGRIND_VALGRIND_H
+ unsigned int valgrind_stack_id; /* the valgrind stack id */
+#endif
+ char stack[0]; /* the thread stack (must remain the last element of the structure) */
+} s_smx_ctx_sysv_t, *smx_ctx_sysv_t;
+
#ifdef CONTEXT_THREADS
static xbt_parmap_t sysv_parmap;
-static ucontext_t* sysv_workers_stacks; /* space to save the worker's stack in each thread */
+static smx_ctx_sysv_t* sysv_workers_context; /* space to save the worker's context in each thread */
static unsigned long sysv_threads_working; /* number of threads that have started their work */
static xbt_os_thread_key_t sysv_worker_id_key; /* thread-specific storage for the thread id */
#endif
#ifdef CONTEXT_THREADS /* To use parallel ucontexts a thread pool is needed */
int nthreads = SIMIX_context_get_nthreads();
sysv_parmap = xbt_parmap_new(nthreads, SIMIX_context_get_parallel_mode());
- sysv_workers_stacks = xbt_new(ucontext_t, nthreads);
+ sysv_workers_context = xbt_new(smx_ctx_sysv_t, nthreads);
+ sysv_maestro_context = NULL;
xbt_os_thread_key_create(&sysv_worker_id_key);
(*factory)->stop = smx_ctx_sysv_stop_parallel;
(*factory)->suspend = smx_ctx_sysv_suspend_parallel;
#ifdef CONTEXT_THREADS
if (sysv_parmap)
xbt_parmap_destroy(sysv_parmap);
- xbt_free(sysv_workers_stacks);
+ xbt_free(sysv_workers_context);
#endif
return smx_ctx_base_factory_finalize(factory);
}
sizeof(smx_ctx_sysv_t), sizeof(int), CTX_ADDR_LEN);
}
} else {
- sysv_maestro_context = context;
+ if(data != NULL && sysv_maestro_context == NULL)
+ sysv_maestro_context = context;
}
+ if(MC_is_active() && code)
+ MC_new_stack_area(context, ((smx_process_t)((smx_context_t)context)->data)->name, &(context->uc), size);
+
return (smx_context_t) context;
}
static void smx_ctx_sysv_runall_serial(void)
{
- if (!xbt_dynar_is_empty(simix_global->process_to_run)) {
- smx_process_t first_process =
- xbt_dynar_get_as(simix_global->process_to_run, 0, smx_process_t);
- sysv_process_index = 1;
+ smx_process_t first_process =
+ xbt_dynar_get_as(simix_global->process_to_run, 0, smx_process_t);
+ sysv_process_index = 1;
- /* execute the first process */
- smx_ctx_sysv_resume_serial(first_process);
- }
+ /* execute the first process */
+ smx_ctx_sysv_resume_serial(first_process);
}
static void smx_ctx_sysv_stop_parallel(smx_context_t context)
else {
/* all processes were run, go to the barrier */
XBT_DEBUG("No more processes to run");
- next_context = (smx_context_t) sysv_maestro_context;
unsigned long worker_id =
(unsigned long) xbt_os_thread_get_specific(sysv_worker_id_key);
- next_stack = &sysv_workers_stacks[worker_id];
+ next_context = (smx_context_t)sysv_workers_context[worker_id];
+ next_stack = &((smx_ctx_sysv_t)next_context)->uc;
}
SIMIX_context_set_current(next_context);
#ifdef CONTEXT_THREADS
unsigned long worker_id = __sync_fetch_and_add(&sysv_threads_working, 1);
xbt_os_thread_set_specific(sysv_worker_id_key, (void*) worker_id);
- ucontext_t* worker_stack = &sysv_workers_stacks[worker_id];
+ smx_ctx_sysv_t worker_context = (smx_ctx_sysv_t)SIMIX_context_self();
+ sysv_workers_context[worker_id] = worker_context;
+ ucontext_t* worker_stack = &worker_context->uc;
smx_context_t context = first_process->context;
SIMIX_context_set_current(context);