ncurses 6.1 - patch 20190209

[ncurses.git] / man / curs_memleaks.3x

diff --git a/man/curs_memleaks.3x b/man/curs_memleaks.3x
index c93dd28185bfd45d77893cab2b2f33df847aa845..4477829a112d70357d64bfdff381b87d6d6e7c55 100644 (file)
--- a/man/curs_memleaks.3x
+++ b/man/curs_memleaks.3x
@@ -26,13 +26,18 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"

-.\" $Id: curs_memleaks.3x,v 1.4 2017/01/07 19:25:15 tom Exp $
+.\" $Id: curs_memleaks.3x,v 1.6 2017/08/22 08:35:37 Sven.Joachim Exp $

 .TH curs_memleaks 3X ""
 .TH curs_memleaks 3X ""

+.ie \n(.g .ds `` \(lq
+.el       .ds `` ``
+.ie \n(.g .ds '' \(rq
+.el       .ds '' ''

 .na
 .hy 0
 .SH NAME
 .na
 .hy 0
 .SH NAME

-\fB_nc_freeall\fP
-\fB_nc_free_and_exit\fP \- \fBcurses\fR memory-leak checking
+\fB_nc_freeall\fP,
+\fB_nc_free_and_exit\fP,
+\fB_nc_free_tinfo\fP \- \fBcurses\fR memory-leak checking

 .ad
 .hy
 .SH SYNOPSIS
 .ad
 .hy
 .SH SYNOPSIS


@@ -41,10 +46,13 @@
 \fBvoid _nc_freeall(void);\fR
 .br
 \fBvoid _nc_free_and_exit(int);\fR
 \fBvoid _nc_freeall(void);\fR
 .br
 \fBvoid _nc_free_and_exit(int);\fR

+.br
+\fBvoid _nc_free_tinfo(int);\fR

 .SH DESCRIPTION
 These functions are used to simplify analysis of memory leaks in the ncurses
 library.
 .SH DESCRIPTION
 These functions are used to simplify analysis of memory leaks in the ncurses
 library.

-They are normally not available; they must be configured into the library
+They are normally not available;
+they must be configured into the library

 at build time using the \fB\-\-disable-leaks\fP option.
 That compiles-in code that frees memory that normally would not be freed.
 .PP
 at build time using the \fB\-\-disable-leaks\fP option.
 That compiles-in code that frees memory that normally would not be freed.
 .PP


@@ -53,17 +61,31 @@ a screen, since (even after calling \fBendwin\fP), it must be available
 for use in the next call to \fBrefresh\fP(3X).
 There are also chunks of memory held for performance reasons.
 That makes it hard to analyze curses applications for memory leaks.
 for use in the next call to \fBrefresh\fP(3X).
 There are also chunks of memory held for performance reasons.
 That makes it hard to analyze curses applications for memory leaks.

-To work around this, one can build a debugging version of the ncurses
-library which frees those chunks which it can, and provides these
-functions to free all of the memory allocated by the ncurses library.
+When using the specially configured debugging version of the ncurses library,
+applications can call functions which free those chunks of memory,
+simplifying the process of memory-leak checking.

 .PP
 .PP

-The \fP_nc_free_and_exit\fP function is the preferred one since
-some of the memory which is freed may be required for the application
-to continue running.
-Its parameter is the code to pass to the \fPexit\fP routine.
+These functions are named with a \*(``_nc_\*('' prefix because they are not
+intended for use in the non-debugging library:
+.TP 5
+\fB_nc_freeall\fP
+This frees (almost) all of the memory allocated by ncurses.
+.TP 5
+\fB_nc_free_and_exit\fP
+This frees the memory allocated by ncurses (like \fB_nc_freeall\fP),
+and exits the program.
+It is preferred over \fB_nc_freeall\fP since some of that memory
+may be required to keep the application running.
+Simply exiting (with the given exit-code) is safer.
+.TP 5
+\fB_nc_free_tinfo\fP
+Use this function if only the low-level terminfo functions (and
+corresponding library) are used.
+Like \fB_nc_free_and_exit\fP, it exits the program after freeing memory.

 .SH RETURN VALUE
 These functions do not return a value.
 .SH PORTABILITY
 .SH RETURN VALUE
 These functions do not return a value.
 .SH PORTABILITY

-These functions are not part of the XSI interface.
+These functions are not part of X/Open Curses;
+nor do other implementations of curses provide a similar feature.

 .SH SEE ALSO
 \fBcurses\fR(3X).
 .SH SEE ALSO
 \fBcurses\fR(3X).