diff options
Diffstat (limited to 'libio/genops.c')
| -rw-r--r-- | libio/genops.c | 72 |
1 files changed, 5 insertions, 67 deletions
diff --git a/libio/genops.c b/libio/genops.c index 8d62da7..741ed77 100644 --- a/libio/genops.c +++ b/libio/genops.c @@ -1,5 +1,4 @@ -/* Copyright (C) 1993,1995,1997-2002, 2003, 2004, 2006 - Free Software Foundation, Inc. +/* Copyright (C) 1993,1995,1997-2002, 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -33,10 +32,6 @@ #include <stdlib.h> #endif #include <string.h> -#include <stdbool.h> -#ifdef _LIBC -#include <sched.h> -#endif #ifdef _IO_MTSAFE_IO static _IO_lock_t list_all_lock = _IO_lock_initializer; @@ -367,7 +362,7 @@ __uflow (fp) #endif if (fp->_mode == 0) - _IO_fwide (fp, -1); + _IO_fwide (fp, -11); if (_IO_in_put_mode (fp)) if (INTUSE(_IO_switch_to_get_mode) (fp) == EOF) return EOF; @@ -662,7 +657,6 @@ _IO_no_init (fp, flags, orientation, wd, jmp) fp->_wide_data->_wide_vtable = jmp; } #endif - fp->_freeres_list = NULL; } int @@ -920,27 +914,10 @@ INTDEF(_IO_flush_all_linebuffered) weak_alias (_IO_flush_all_linebuffered, _flushlbf) #endif - -/* The following is a bit tricky. In general, we want to unbuffer the - streams so that all output which follows is seen. If we are not - looking for memory leaks it does not make much sense to free the - actual buffer because this will happen anyway once the program - terminated. If we do want to look for memory leaks we have to free - the buffers. Whether something is freed is determined by the - function sin the libc_freeres section. Those are called as part of - the atexit routine, just like _IO_cleanup. The problem is we do - not know whether the freeres code is called first or _IO_cleanup. - if the former is the case, we set the DEALLOC_BUFFER variable to - true and _IO_unbuffer_write will take care of the rest. If - _IO_unbuffer_write is called first we add the streams to a list - which the freeres function later can walk through. */ static void _IO_unbuffer_write (void); -static bool dealloc_buffers; -static _IO_FILE *freeres_list; - static void -_IO_unbuffer_write (void) +_IO_unbuffer_write () { struct _IO_FILE *fp; for (fp = (_IO_FILE *) INTUSE(_IO_list_all); fp; fp = fp->_chain) @@ -950,32 +927,7 @@ _IO_unbuffer_write (void) || (fp->_flags & _IO_IS_APPENDING)) /* Iff stream is un-orientated, it wasn't used. */ && fp->_mode != 0) - { - int cnt; -#define MAXTRIES 2 - for (cnt = 0; cnt < MAXTRIES; ++cnt) - if (_IO_lock_trylock (*fp->_lock) == 0) - break; - else - /* Give the other thread time to finish up its use of the - stream. */ - __sched_yield (); - - if (! dealloc_buffers && !(fp->_flags & _IO_USER_BUF)) - { - fp->_flags |= _IO_USER_BUF; - - fp->_freeres_list = freeres_list; - freeres_list = fp; - fp->_freeres_buf = fp->_IO_buf_base; - fp->_freeres_size = _IO_blen (fp); - } - - _IO_SETBUF (fp, NULL, 0); - - if (cnt < MAXTRIES) - _IO_lock_unlock (*fp->_lock); - } + _IO_SETBUF (fp, NULL, 0); /* Make sure that never again the wide char functions can be used. */ @@ -983,25 +935,11 @@ _IO_unbuffer_write (void) } } - -libc_freeres_fn (buffer_free) -{ - dealloc_buffers = true; - - while (freeres_list != NULL) - { - FREE_BUF (freeres_list->_freeres_buf, freeres_list->_freeres_size); - - freeres_list = freeres_list->_freeres_list; - } -} - - int _IO_cleanup () { /* We do *not* want locking. Some threads might use streams but - that is their problem, we flush them underneath them. */ + that is there problem, we flush them underneath them. */ int result = _IO_flush_all_lockp (0); /* We currently don't have a reliable mechanism for making sure that |