/* xbt_os_thread -- portability layer over the pthread API */
/* Used in RL to get win/lin portability, and in SG when CONTEXT_THREAD */
-/* in SG, when using CONTEXT_UCONTEXT, xbt_os_thread_stub is used instead */
+/* in SG, when using HAVE_UCONTEXT_CONTEXTS, xbt_os_thread_stub is used instead */
-/* Copyright (c) 2007-2014. The SimGrid Team.
+/* Copyright (c) 2007-2015. 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. */
-#include "internal_config.h"
+#if defined(WIN32)
+#elif defined(__MACH__) && defined(__APPLE__)
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#else
+#include <unistd.h>
+#endif
+
+#include "src/internal_config.h"
#include "xbt/sysdep.h"
#include "xbt/ex.h"
-#include "xbt/ex_interface.h" /* We play crude games with exceptions */
-#include "portable.h"
+#include "src/xbt/ex_interface.h" /* We play crude games with exceptions */
+#include "src/portable.h"
#include "xbt/xbt_os_time.h" /* Portable time facilities */
#include "xbt/xbt_os_thread.h" /* This module */
-#include "xbt_modinter.h" /* Initialization/finalization of this module */
+#include "src/xbt_modinter.h" /* Initialization/finalization of this module */
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_sync_os, xbt,
"Synchronization mechanism (OS-level)");
/* ********************************* PTHREAD IMPLEMENTATION ************************************ */
-#ifdef HAVE_PTHREAD_H
+#ifndef _XBT_WIN32
+#include <pthread.h>
#include <limits.h>
#include <semaphore.h>
-#ifdef HAVE_MUTEX_TIMEDLOCK
-/* redefine the function header since we fail to get this from system headers on amd (at least) */
-int pthread_mutex_timedlock(pthread_mutex_t * mutex,
- const struct timespec *abs_timeout);
+#ifdef CORE_BINDING
+#define _GNU_SOURCE
+#include <sched.h>
#endif
-
/* use named sempahore when sem_init() does not work */
#ifndef HAVE_SEM_INIT
static int next_sem_ID = 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->detached = 0;
main_thread->name = (char *) "main";
- main_thread->start_routine = NULL;
main_thread->param = NULL;
+ main_thread->start_routine = NULL;
main_thread->running_ctx = xbt_new(xbt_running_ctx_t, 1);
+ main_thread->extra_data = NULL;
XBT_RUNNING_CTX_INITIALIZE(main_thread->running_ctx);
if ((errcode = pthread_setspecific(xbt_self_thread_key, main_thread)))
THROWF(system_error, errcode,
- "pthread_setspecific failed for xbt_self_thread_key");
+ "Impossible to set the SimGrid identity descriptor to the main thread (pthread_setspecific failed)");
__xbt_running_ctx_fetch = _os_thread_get_running_ctx;
__xbt_ex_terminate = _os_thread_ex_terminate;
}
+#ifdef CORE_BINDING
+int xbt_os_thread_bind(xbt_os_thread_t thread, int cpu){
+ pthread_t pthread = thread->t;
+ int errcode = 0;
+ cpu_set_t cpuset;
+ CPU_ZERO(&cpuset);
+ CPU_SET(cpu, &cpuset);
+ errcode = pthread_setaffinity_np(pthread, sizeof(cpu_set_t), &cpuset);
+ return errcode;
+}
+#endif
+
void xbt_os_thread_setstacksize(int stack_size)
{
+ size_t alignment[] = {
+ xbt_pagesize,
+#ifdef PTHREAD_STACK_MIN
+ PTHREAD_STACK_MIN,
+#endif
+ 0
+ };
size_t sz;
int res;
+ int i;
if (stack_size < 0)
xbt_die("stack size %d is negative, maybe it exceeds MAX_INT?", stack_size);
sz = stack_size;
res = pthread_attr_setstacksize(&thread_attr, sz);
-#ifdef PTHREAD_STACK_MIN
- if (res == EINVAL) {
- /* Invalid size, try again with a multiple of PTHREAD_STACK_MIN. */
- size_t rem = sz % PTHREAD_STACK_MIN;
+ for (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 + PTHREAD_STACK_MIN;
- XBT_DEBUG("pthread_attr_setstacksize failed for %#zx, try again with %#zx",
+ size_t sz2 = sz - rem + alignment[i];
+ XBT_DEBUG("pthread_attr_setstacksize failed for %zd, try again with %zd",
sz, sz2);
sz = sz2;
res = pthread_attr_setstacksize(&thread_attr, sz);
}
}
-#endif
if (res == EINVAL)
- XBT_WARN("invalid stack size (maybe too big): %#zx", sz);
+ XBT_WARN("invalid stack size (maybe too big): %zd", sz);
else if (res != 0)
- XBT_WARN("unknown error %d in pthread stacksize setting: %#zx", res, sz);
+ XBT_WARN("unknown error %d in pthread stacksize setting: %zd", 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: %zd", res, sz);
+#endif
}
const char *xbt_os_thread_name(xbt_os_thread_t t)
xbt_os_thread_t xbt_os_thread_self(void)
{
- xbt_os_thread_t res;
-
if (!thread_mod_inited)
return NULL;
- res = pthread_getspecific(xbt_self_thread_key);
-
- return res;
+ return pthread_getspecific(xbt_self_thread_key);
}
void xbt_os_thread_key_create(xbt_os_thread_key_t* key) {
res->name[13] = '\0';
res->ps = sem_open(res->name, O_CREAT, 0644, value);
}
- if ((res->ps == (sem_t *) SEM_FAILED))
+ if (res->ps == (sem_t *) SEM_FAILED)
THROWF(system_error, errno, "sem_open() failed: %s", strerror(errno));
/* Remove the name from the semaphore namespace: we never join on it */
void xbt_os_thread_mod_preinit(void)
{
xbt_self_thread_key = TlsAlloc();
+
+ xbt_os_thread_t main_thread = xbt_new0(s_xbt_os_thread_t, 1);
+ main_thread->name = (char *) "main";
+ main_thread->start_routine = NULL;
+ main_thread->param = NULL;
+
+ if (!TlsSetValue(xbt_self_thread_key, main_thread))
+ THROWF(system_error, (int)GetLastError(),
+ "Impossible to set the SimGrid identity descriptor to the main thread (TlsSetValue() failed)");
+
}
void xbt_os_thread_mod_postexit(void)
stack_size = size;
}
+void xbt_os_thread_setguardsize(int size)
+{
+ XBT_WARN("xbt_os_thread_setguardsize is not implemented (%d)", size);
+}
+
const char *xbt_os_thread_name(xbt_os_thread_t t)
{
return t->name;
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
return sysinfo.dwNumberOfProcessors;
-#elif MACOS
+#elif defined(__APPLE__) && defined(__MACH__)
int nm[2];
size_t len = 4;
uint32_t count;
void *xbt_os_thread_get_extra_data(void)
{
- xbt_os_thread_t self = xbt_os_thread_self();
- return self? self->extra_data : NULL;
+ xbt_os_thread_t thread = xbt_os_thread_self();
+ if (thread)
+ return xbt_os_thread_self()->extra_data;
+ else
+ return NULL;
}
xbt_os_rmutex_t xbt_os_rmutex_init(void)