/* 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 "gras_config.h"
#include <unistd.h>
#include <sys/syscall.h>
-#include <linux/futex.h>
+#ifdef HAVE_FUTEX_H
+ #include <linux/futex.h>
+#else
+ #include "xbt/xbt_os_thread.h"
+#endif
#include <errno.h>
#include "parmap_private.h"
XBT_LOG_NEW_SUBCATEGORY(xbt_parmap_unit, xbt_parmap, "parmap unit testing");
static void *_xbt_parmap_worker_main(void *parmap);
-
-static void futex_wait(int *uaddr, int val);
-static void futex_wake(int *uaddr, int val);
-
+#ifdef HAVE_FUTEX_H
+ static void futex_wait(int *uaddr, int val);
+ static void futex_wake(int *uaddr, int val);
+#endif
xbt_parmap_t xbt_parmap_new(unsigned int num_workers)
{
unsigned int i;
/* Initialize the thread pool data structure */
xbt_parmap_t parmap = xbt_new0(s_xbt_parmap_t, 1);
+ #ifndef HAVE_FUTEX_H
+ parmap->workers_ready->mutex = xbt_os_mutex_init();
+ parmap->workers_ready->cond = xbt_os_cond_init();
+ #endif
parmap->num_workers = num_workers;
parmap->status = PARMAP_WORK;
}
}
-static void futex_wait(int *uaddr, int val)
-{
- DEBUG1("Waiting on futex %d", *uaddr);
- syscall(SYS_futex, uaddr, FUTEX_WAIT_PRIVATE, val, NULL, NULL, 0);
-}
+#ifdef HAVE_FUTEX_H
+ static void futex_wait(int *uaddr, int val)
+ {
+ DEBUG1("Waiting on futex %d", *uaddr);
+ syscall(SYS_futex, uaddr, FUTEX_WAIT_PRIVATE, val, NULL, NULL, 0);
+ }
-static void futex_wake(int *uaddr, int val)
-{
- DEBUG1("Waking futex %d", *uaddr);
- syscall(SYS_futex, uaddr, FUTEX_WAKE_PRIVATE, val, NULL, NULL, 0);
-}
+ static void futex_wake(int *uaddr, int val)
+ {
+ DEBUG1("Waking futex %d", *uaddr);
+ syscall(SYS_futex, uaddr, FUTEX_WAKE_PRIVATE, val, NULL, NULL, 0);
+ }
+#endif
/* Futex based implementation of the barrier */
void xbt_barrier_init(xbt_barrier_t barrier, unsigned int threads_to_wait)
barrier->thread_count = 0;
}
-void xbt_barrier_wait(xbt_barrier_t barrier)
-{
- int myflag = 0;
- unsigned int mycount = 0;
-
- myflag = barrier->futex;
- mycount = __sync_add_and_fetch(&barrier->thread_count, 1);
- if(mycount < barrier->threads_to_wait){
- futex_wait(&barrier->futex, myflag);
- }else{
- barrier->futex = __sync_add_and_fetch(&barrier->futex, 1);
- barrier->thread_count = 0;
- futex_wake(&barrier->futex, barrier->threads_to_wait);
- }
-}
+#ifdef HAVE_FUTEX_H
+ void xbt_barrier_wait(xbt_barrier_t barrier)
+ {
+ int myflag = 0;
+ unsigned int mycount = 0;
+
+ myflag = barrier->futex;
+ mycount = __sync_add_and_fetch(&barrier->thread_count, 1);
+ if(mycount < barrier->threads_to_wait){
+ futex_wait(&barrier->futex, myflag);
+ }else{
+ barrier->futex = __sync_add_and_fetch(&barrier->futex, 1);
+ barrier->thread_count = 0;
+ futex_wake(&barrier->futex, barrier->threads_to_wait);
+ }
+ }
+#else
+ void xbt_barrier_wait(xbt_barrier_t barrier)
+ {
+ int myflag = 0;
+ unsigned int mycount = 0;
+
+ xbt_os_mutex_acquire(barrier->mutex);
+
+ barrier->thread_count++;
+ if(barrier->thread_count < barrier->threads_to_wait){
+ xbt_os_cond_wait(barrier->cond,barrier->mutex);
+ }else{
+ barrier->thread_count = 0;
+ xbt_os_cond_broadcast(barrier->cond);
+ }
+ xbt_os_mutex_release(barrier->mutex);
+ }
+#endif
#ifdef SIMGRID_TEST
#include "xbt.h"