BUILD: threads: fix -Wundef for _POSIX_PRIORITY_SCHEDULING on libmusl
Building with an old musl-based toolchain reported this warning:
include/haproxy/thread.h: In function 'ha_thread_relax':
include/haproxy/thread.h:256:5: warning: "_POSIX_PRIORITY_SCHEDULING" is not defined [-Wundef]
#if _POSIX_PRIORITY_SCHEDULING
^
There were indeed two "#if" insteadd of #ifdef" for this macro, let's
fix them.
diff --git a/include/haproxy/thread.h b/include/haproxy/thread.h
index 51c7278..9cf6647 100644
--- a/include/haproxy/thread.h
+++ b/include/haproxy/thread.h
@@ -103,7 +103,7 @@
static inline void ha_thread_relax(void)
{
-#if _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_PRIORITY_SCHEDULING
sched_yield();
#endif
}
@@ -253,7 +253,7 @@
static inline void ha_thread_relax(void)
{
-#if _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_PRIORITY_SCHEDULING
sched_yield();
#else
pl_cpu_relax();