X-Git-Url: https://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=doc%2Fhtml%2Fman%2Fcurs_memleaks.3x.html;h=4c1876f700bd09d491e71339d26273a6588e7894;hb=67327e4e3b2121f8273fb73ec14ef234ed01231e;hp=499374aabe590fa955b397afe5343bd941c08c29;hpb=58552e8c761a70f8f0bd591fecdf576fa8216e3e;p=ncurses.git diff --git a/doc/html/man/curs_memleaks.3x.html b/doc/html/man/curs_memleaks.3x.html index 499374aa..4c1876f7 100644 --- a/doc/html/man/curs_memleaks.3x.html +++ b/doc/html/man/curs_memleaks.3x.html @@ -1,6 +1,7 @@ -
- --curs_memleaks(3x) curs_memleaks(3x) +curs_memleaks(3x) Library calls curs_memleaks(3x)
- _nc_freeall _nc_free_and_exit - curses memory-leak - checking + exit_curses, exit_terminfo - check for memory leaks in curses
#include <curses.h> + void exit_curses(int code); + + #include <term.h> + void exit_terminfo(int code); + /* deprecated (intentionally not declared in curses.h or term.h) */ void _nc_freeall(void); - void _nc_free_and_exit(int); + void _nc_free_and_exit(int code); + void _nc_free_tinfo(int code);
- 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 at - build time using the --disable-leaks option. That com- - piles-in code that frees memory that normally would not be - freed. - - Any implementation of curses must not free the memory as- - sociated with a screen, since (even after calling endwin), - it must be available for use in the next call to re- - fresh(3x). There are also chunks of memory held for per- - formance 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 func- - tions to free all of the memory allocated by the ncurses - library. - - The _nc_free_and_exit 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 exit routine. + These functions are used to simplify analysis of memory leaks in the + ncurses library. + + Any implementation of curses must not free the memory associated with a + screen, since (even after calling endwin(3x)), it must be available for + use in the next call to refresh(3x). There are also chunks of memory + held for performance reasons. That makes it hard to analyze curses + applications for memory leaks. 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. + + Some of the functions are named with a "_nc_" prefix because they are + not intended for use in the non-debugging library: + + _nc_freeall + This frees (almost) all of the memory allocated by ncurses. + + _nc_free_and_exit + This frees the memory allocated by ncurses (like _nc_freeall), and + exits the program. It is preferred over _nc_freeall since some of + that memory may be required to keep the application running. + Simply exiting (with the given exit-code) is safer. + + _nc_free_tinfo + Use this function if only the low-level terminfo functions (and + corresponding library) are used. Like _nc_free_and_exit, it exits + the program after freeing memory. + + The functions prefixed "_nc" are normally not available; they must be + configured into the library at build time using the --disable-leaks + option. That compiles-in code that frees memory that normally would + not be freed. + + The exit_curses and exit_terminfo functions call _nc_free_and_exit and + _nc_free_tinfo if the library is configured to support memory-leak + checking. If the library is not configured to support memory-leak + checking, they simply call exit.
@@ -87,15 +109,30 @@
- 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. + + In any implementation of X/Open Curses, an application can free part of + the memory allocated by curses: + + o The portable part of exit_curses can be freed using delscreen, + passing the SCREEN pointer returned by newterm. + + In some implementations, there is a global variable sp which could + be used, e.g., if the screen were only initialized using initscr. + + o The portable part of exit_terminfo can be freed using del_curterm. + + In this case, there is a global variable cur_term which can be used + as parameter.
- curses(3x). + curses(3x), curs_initscr(3x), curs_terminfo(3x) - curs_memleaks(3x) +ncurses 6.4 2023-12-23 curs_memleaks(3x)