--- libaitio/src/exec.c	2013/12/12 21:17:53	1.1.2.18
+++ libaitio/src/exec.c	2013/12/12 23:06:45	1.1.2.20
@@ -254,6 +254,7 @@ io_progOpen(prog_t * __restrict prg, u_int execNum)
 	pthread_mutex_lock(&prg->prog_mtx);
 	for (i = 0; (execNum ? ret < execNum : 42) && i < array_Size(prg->prog_fds); i++)
 		if (!array_Get(prg->prog_fds, i)) {
+			printf("%d) %s!!! %d ret=%d\n", i, __func__, execNum, ret);
 			f = e_popen(prg->prog_name, "r+", &pid);
 #ifdef POPEN_STREAM
 			if (!f) {
@@ -302,7 +303,7 @@ io_progGrow(prog_t * __restrict prg, u_int toNum)
 	if (toNum < prg->prog_inin)
 		toNum = prg->prog_inin;
 
-	if ((toNum - prg->prog_cnum) < 1)
+	if ((int) (toNum - prg->prog_cnum) < 1)
 		return 0;
 
 	return io_progOpen(prg, toNum - prg->prog_cnum);
@@ -383,7 +384,7 @@ io_progCheck(prog_t * __restrict prg, int re)
 #else
 				(p = pio_pgetpid((int) array(prg->prog_fds, i, intptr_t))))
 #endif
-			if (waitpid(p->pid, &p->stat, WNOHANG) > 0) {
+			if (waitpid(p->pid, &p->stat, WNOHANG)) {
 				clrbit(prg->prog_used, i);
 #ifdef POPEN_STREAM
 				e_pclose(array(prg->prog_fds, i, FILE*));
@@ -397,7 +398,7 @@ io_progCheck(prog_t * __restrict prg, int re)
 	pthread_mutex_unlock(&prg->prog_mtx);
 
 	/* resurrect to init number */
-	if (re && prg->prog_inin - prg->prog_cnum)
+	if (re && ((int) (prg->prog_inin - prg->prog_cnum) > 0))
 		io_progOpen(prg, prg->prog_inin - prg->prog_cnum);
 
 	return ret;
@@ -444,18 +445,18 @@ io_progAttach(prog_t * __restrict prg, int newOne)
 		}
 	pthread_mutex_unlock(&prg->prog_mtx);
 
-	/* not found free prog */
-	if (!f && (i = io_progOpen2(prg)) > 0) {
+	/* execute new one program */
+	if (newOne) {
+		if (f)
+			io_progOpen(prg, 1);
+		else if ((i = io_progOpen2(prg)) > -1)
+			/* not found free program */
 #ifdef POPEN_STREAM
-		f = array(prg->prog_fds, i, FILE*);
+			f = array(prg->prog_fds, i, FILE*);
 #else
-		f = array(prg->prog_fds, i, intptr_t);
+			f = array(prg->prog_fds, i, intptr_t);
 #endif
 	}
-
-	/* execute new one program */
-	if (newOne && f)
-		io_progOpen(prg, 1);
 
 	return f;
 }