/* Used in RL to get win/lin portability, and in SG when CONTEXT_THREAD */
/* in SG, when using HAVE_UCONTEXT_CONTEXTS, xbt_os_thread_stub is used instead */
-/* Copyright (c) 2007-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved. */
/* 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. */
typedef struct xbt_os_thread_ {
pthread_t t;
- char *name;
void *param;
pvoid_f_pvoid_t start_routine;
} s_xbt_os_thread_t;
static xbt_os_thread_t main_thread = NULL;
/* thread-specific data containing the xbt_os_thread_t structure */
-static pthread_key_t xbt_self_thread_key;
static int thread_mod_inited = 0;
-/* defaults attribute for pthreads */
-//FIXME: find where to put this
-static pthread_attr_t thread_attr;
-
/* frees the xbt_os_thread_t corresponding to the current thread */
static void xbt_os_thread_free_thread_data(xbt_os_thread_t thread)
{
if (thread == main_thread) /* just killed main thread */
main_thread = NULL;
- free(thread->name);
free(thread);
}
if (thread_mod_inited)
return;
- int errcode = pthread_key_create(&xbt_self_thread_key, NULL);
- xbt_assert(errcode == 0, "pthread_key_create failed for xbt_self_thread_key");
-
main_thread = xbt_new(s_xbt_os_thread_t, 1);
- main_thread->name = NULL;
- main_thread->name = xbt_strdup("main");
main_thread->param = NULL;
main_thread->start_routine = NULL;
- if ((errcode = pthread_setspecific(xbt_self_thread_key, main_thread)))
- THROWF(system_error, errcode,
- "Impossible to set the SimGrid identity descriptor to the main thread (pthread_setspecific failed)");
-
- pthread_attr_init(&thread_attr);
-
thread_mod_inited = 1;
}
void xbt_os_thread_mod_postexit(void)
{
- /* FIXME: don't try to free our key on shutdown.
- Valgrind detects no leak if we don't, and whine if we try to */
- // int errcode;
-
- // if ((errcode=pthread_key_delete(xbt_self_thread_key)))
- // THROWF(system_error,errcode,"pthread_key_delete failed for xbt_self_thread_key");
- free(main_thread->name);
free(main_thread);
main_thread = NULL;
thread_mod_inited = 0;
{
xbt_os_thread_t t = s;
- int errcode = pthread_setspecific(xbt_self_thread_key, t);
- xbt_assert(errcode == 0, "pthread_setspecific failed for xbt_self_thread_key");
-
return t->start_routine(t->param);
}
-xbt_os_thread_t xbt_os_thread_create(const char* name, pvoid_f_pvoid_t start_routine, void* param)
+xbt_os_thread_t xbt_os_thread_create(pvoid_f_pvoid_t start_routine, void* param)
{
xbt_os_thread_t res_thread = xbt_new(s_xbt_os_thread_t, 1);
- res_thread->name = xbt_strdup(name);
res_thread->start_routine = start_routine;
res_thread->param = param;
- int errcode = pthread_create(&(res_thread->t), &thread_attr, wrapper_start_routine, res_thread);
+ int errcode = pthread_create(&(res_thread->t), NULL, wrapper_start_routine, res_thread);
xbt_assert(errcode == 0, "pthread_create failed: %s", strerror(errcode));
return res_thread;
return errcode;
}
-void xbt_os_thread_setstacksize(int stack_size)
-{
- size_t alignment[] = {
- xbt_pagesize,
-#ifdef PTHREAD_STACK_MIN
- PTHREAD_STACK_MIN,
-#endif
- 0
- };
-
- xbt_assert(stack_size >= 0, "stack size %d is negative, maybe it exceeds MAX_INT?", stack_size);
-
- size_t sz = stack_size;
- int res = pthread_attr_setstacksize(&thread_attr, sz);
-
- for (int i = 0; res == EINVAL && alignment[i] > 0; i++) {
- /* Invalid size, try again with next multiple of alignment[i]. */
- size_t rem = sz % alignment[i];
- if (rem != 0 || sz == 0) {
- size_t sz2 = sz - rem + alignment[i];
- XBT_DEBUG("pthread_attr_setstacksize failed for %zu, try again with %zu", sz, sz2);
- sz = sz2;
- res = pthread_attr_setstacksize(&thread_attr, sz);
- }
- }
-
- if (res == EINVAL)
- XBT_WARN("invalid stack size (maybe too big): %zu", sz);
- else if (res != 0)
- XBT_WARN("unknown error %d in pthread stacksize setting: %zu", res, sz);
-}
-
-void xbt_os_thread_setguardsize(int guard_size)
-{
-#ifdef WIN32
- THROW_UNIMPLEMENTED; //pthread_attr_setguardsize is not implemented in pthread.h on windows
-#else
- size_t sz = guard_size;
- int res = pthread_attr_setguardsize(&thread_attr, sz);
- if (res)
- XBT_WARN("pthread_attr_setguardsize failed (%d) for size: %zu", res, sz);
-#endif
-}
-
-const char *xbt_os_thread_self_name(void)
-{
- xbt_os_thread_t me = xbt_os_thread_self();
- return me ? (const char *)me->name : "main";
-}
-
void xbt_os_thread_join(xbt_os_thread_t thread, void **thread_return)
{
int errcode = pthread_join(thread->t, thread_return);
xbt_os_thread_free_thread_data(thread);
}
-void xbt_os_thread_exit(int *retval)
-{
- pthread_exit(retval);
-}
-
-xbt_os_thread_t xbt_os_thread_self(void )
-{
- if (!thread_mod_inited)
- return NULL;
-
- return pthread_getspecific(xbt_self_thread_key);
-}
-
/****** mutex related functions ******/
typedef struct xbt_os_mutex_ {
pthread_mutex_t m;
