--- parser3/src/main/pa_os.C	2013/07/23 21:32:18	1.14
+++ parser3/src/main/pa_os.C	2017/02/07 22:00:43	1.18
@@ -1,14 +1,16 @@
 /** @file
 	Parser: commonly functions.
 
-	Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
+	Copyright (c) 2001-2017 Art. Lebedev Studio (http://www.artlebedev.com)
 	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
 */
 
 #include "pa_config_includes.h"
 #include "pa_os.h"
 
-volatile const char * IDENT_PA_OS_C="$Id: pa_os.C,v 1.14 2013/07/23 21:32:18 moko Exp $" IDENT_PA_OS_H; 
+volatile const char * IDENT_PA_OS_C="$Id: pa_os.C,v 1.18 2017/02/07 22:00:43 moko Exp $" IDENT_PA_OS_H; 
+
+unsigned int pa_lock_attempts=PA_LOCK_ATTEMPTS;
 
 #ifdef _MSC_VER
 #include <windows.h>
@@ -57,20 +59,20 @@ volatile const char * IDENT_PA_OS_C="$Id
 int pa_lock(int fd, int attempts, int operation){
 	while(true){
 		FLOCK(operation);
-		attempts--;
-		if(status==0 || attempts<=0){
-			return status;
-		}
+		if(status==0)
+			return 0;
+		if(--attempts<=0)
+			return errno;
 		pa_sleep(PA_LOCK_WAIT_TIMEOUT_SECS, PA_LOCK_WAIT_TIMEOUT_USECS);
 	}
 };
 
 int pa_lock_shared_blocking(int fd) {
-	return pa_lock(fd, PA_LOCK_ATTEMPTS, PA_SH_LOCK);
+	return pa_lock(fd, pa_lock_attempts, PA_SH_LOCK);
 }
 
 int pa_lock_exclusive_blocking(int fd) {
-	return pa_lock(fd, PA_LOCK_ATTEMPTS, PA_EX_LOCK);
+	return pa_lock(fd, pa_lock_attempts, PA_EX_LOCK);
 }
 
 int pa_lock_exclusive_nonblocking(int fd) {