lwp: Simplify lwpSigWait() interface

[empserver] / src / lib / lwp / sig.c

diff --git a/src/lib/lwp/sig.c b/src/lib/lwp/sig.c
index 40991ce004100c3cda01bf552437aa58e4b1d673..50f7f5ab000aad3a739916526d0fc92dfa2721fb 100644 (file)
--- a/src/lib/lwp/sig.c
+++ b/src/lib/lwp/sig.c
@@ -138,17 +138,17 @@ lwpGetSig(void)
 
 /*
  * Wait until one of the signals passed to lwpInitSigWait() arrives.
- * Assign its number to *@sig and return 0.
- * If another thread is already waiting for signals, return EBUSY
+ * Return its signal number.
+ * If another thread is already waiting for signals, return -1
  * without waiting.
  */
 int
-lwpSigWait(int *sig)
+lwpSigWait(void)
 {
     int res;
 
     if (LwpSigWaiter)
-       return EBUSY;
+       return -1;
     for (;;) {
        res = lwpGetSig();
        if (res > 0)
@@ -157,8 +157,7 @@ lwpSigWait(int *sig)
        LwpSigWaiter = LwpCurrent;
        lwpReschedule();
     }
-    *sig = res;
-    return 0;
+    return res;
 }
 
 /*