From 7f1aa05f3e8ebe7d4c67653ae1068b9769f0c28a Mon Sep 17 00:00:00 2001
From: Alessandre Laguierce <alessandre.laguierce@enseirb-matmeca.fr>
Date: Wed, 2 Apr 2025 15:24:30 +0200
Subject: [PATCH] feat: better scheduling for fibo

---
 Makefile            | 2 +-
 src/thread/thread.c | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 982bba6..892dd42 100644
--- a/Makefile
+++ b/Makefile
@@ -109,7 +109,7 @@ ${check_targets}: check_%: ${build_dir}/%
 	$^ ${check_argv}
 
 ${bins_target}: ${build_dir}/%: ${objs} ${build_dir}/${tst_dir}/%.o
-	${CC} -o $@ $^ ${CFLAGS}   ./lib/libmimalloc ${LDFLAGS}
+	${CC} -o $@ $^ ${CFLAGS} ${LDFLAGS}
 
 ${build_dir}/libthread.so: ${objs}
 	${CC} -o $@ -shared $^ ${CFLAGS} ${LDFLAGS}
diff --git a/src/thread/thread.c b/src/thread/thread.c
index 994f558..028f234 100644
--- a/src/thread/thread.c
+++ b/src/thread/thread.c
@@ -17,7 +17,8 @@
 #define IS_WAITING(entry) (entry->status & WAITING)
 #define GET_LAST_WAITED_THREAD(entry) (entry->last_waited ? entry->last_waited->last_thread : NULL)
 #define WAITED 0x8
-#define MUTEX_WAITING 0xf0
+#define YIELD (char) 0x20
+#define MUTEX_WAITING (char) 0x10
 #define IS_WAITED(entry) (entry->status & WAITED)
 #define IS_MUTEX_WAITING(entry) (entry->status & MUTEX_WAITING)
 
@@ -79,6 +80,10 @@ int thread_yield(void)
     if (TAILQ_EMPTY(&head)) {
         return 0;
     }
+    if (!(running->status & YIELD)) {
+	    running->status |= YIELD;
+	    return 0;
+    }
 
     /* Current strategy :
      * if we have checked the number of threads then keep the running one