From: Arnaud Giersch <arnaud.giersch@iut-bm.univ-fcomte.fr>
Date: Wed, 8 Feb 2012 22:58:25 +0000 (+0100)
Subject: Parmap: protect against wraparound for round.
X-Git-Tag: exp_20120216~33
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/b7d7072994877985a12c99591ad5c34dac347a8f?hp=7e6a623d771b9ef0f6e3f893ba9213154d07bc54

Parmap: protect against wraparound for round.
---

diff --git a/src/xbt/parmap.c b/src/xbt/parmap.c
index 103fe7fddf..8219493515 100644
--- a/src/xbt/parmap.c
+++ b/src/xbt/parmap.c
@@ -347,7 +347,7 @@ static void xbt_parmap_posix_worker_wait(xbt_parmap_t parmap, unsigned round)
 {
   xbt_os_mutex_acquire(parmap->ready_mutex);
   /* wait for more work */
-  if (parmap->work < round) {
+  if (parmap->work != round) {
     xbt_os_cond_wait(parmap->ready_cond, parmap->ready_mutex);
   }
   xbt_os_mutex_release(parmap->ready_mutex);
@@ -416,7 +416,7 @@ static void xbt_parmap_futex_worker_wait(xbt_parmap_t parmap, unsigned round)
 {
   unsigned work = parmap->work;
   /* wait for more work */
-  if (work < round)
+  if (work != round)
     futex_wait(&parmap->work, work);
 }
 #endif
@@ -472,7 +472,7 @@ static void xbt_parmap_busy_master_signal(xbt_parmap_t parmap)
 static void xbt_parmap_busy_worker_wait(xbt_parmap_t parmap, unsigned round)
 {
   /* wait for more work */
-  while (parmap->work < round) {
+  while (parmap->work != round) {
     xbt_os_thread_yield();
   }
 }