--- parser3/src/include/pa_common.h	2001/12/27 19:57:08	1.69
+++ parser3/src/include/pa_common.h	2002/02/05 12:09:22	1.72
@@ -4,7 +4,7 @@
 	Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
 	Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru)
 
-	$Id: pa_common.h,v 1.69 2001/12/27 19:57:08 paf Exp $
+	$Id: pa_common.h,v 1.72 2002/02/05 12:09:22 paf Exp $
 */
 
 #ifndef PA_COMMON_H
@@ -78,6 +78,8 @@ extern "C" double sign(double);
 inline double sign(double param) { return param > 0 ? 1 : ( param < 0 ? -1 : 0 ); }
 #endif
 
+/// yields to OS for secs secs and usecs milliseconds
+int pa_sleep(unsigned long secs, unsigned long usecs);
 
 /** under WIN32 "t" mode fixes DOS chars OK, 
 	can't say that about other systems/ line break styles
@@ -106,10 +108,25 @@ bool file_read(Pool& pool, const String&
 			   size_t offset=0, size_t limit=0);
 
 /**
-	write data to specified file using pool, 
+	lock specified file exclusively, 
+	do actions under lock.
+	throws an exception in case of problems
+	
+	if block=false does non-blocking lock
+	@returns true if locked OK, or false if non-blocking locking failed
+*/
+bool file_write_action_under_lock(
+				const String& file_spec, 
+				const char *action_name, void (*action)(int, void *), void *context=0,
+				bool as_text=false,
+				bool do_append=false,
+				bool do_block=true);
+
+/**
+	write data to specified file, 
 	throws an exception in case of problems
 */
-void file_write(Pool& pool, 
+void file_write(
 				const String& file_spec,
 				const void *data, size_t size, 
 				bool as_text,
@@ -119,12 +136,12 @@ void file_write(Pool& pool,
 	delete specified file 
 	throws an exception in case of problems
 */
-bool file_delete(Pool& pool, const String& file_spec, bool fail_on_read_problem=true);
+bool file_delete(const String& file_spec, bool fail_on_read_problem=true);
 /**
 	move specified file 
 	throws an exception in case of problems
 */
-void file_move(Pool& pool, const String& old_spec, const String& new_spec);
+void file_move(const String& old_spec, const String& new_spec);
 
 bool file_readable(const String& file_spec);
 bool dir_readable(const String& file_spec);