From 082e680bd54e999f2bb4eb77141958938b1e9ee9 Mon Sep 17 00:00:00 2001 From: Manuel Novoa III Date: Wed, 11 Feb 2004 23:48:50 +0000 Subject: New stdio core. Should be more maintainable. Fixes a couple of bugs. Codepaths streamlined. Improved performance for nonthreaded apps when linked with a thread-enabled libc. Minor iconv bug and some locale/thread related startup issues fixed. These showed up in getting a gcj-compiled java helloworld app running. Removed some old extension functions... _stdio_fdout and _stdio_fsfopen. --- libc/stdio/fwrite.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 libc/stdio/fwrite.c (limited to 'libc/stdio/fwrite.c') diff --git a/libc/stdio/fwrite.c b/libc/stdio/fwrite.c new file mode 100644 index 000000000..a5e8fd6bf --- /dev/null +++ b/libc/stdio/fwrite.c @@ -0,0 +1,59 @@ +/* Copyright (C) 2004 Manuel Novoa III + * + * GNU Library General Public License (LGPL) version 2 or later. + * + * Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details. + */ + +#include "_stdio.h" + +#ifdef __DO_UNLOCKED + +weak_alias(__fwrite_unlocked,fwrite_unlocked); +#ifndef __UCLIBC_HAS_THREADS__ +weak_alias(__fwrite_unlocked,fwrite); +#endif + +size_t __fwrite_unlocked(const void * __restrict ptr, size_t size, + size_t nmemb, register FILE * __restrict stream) +{ + __STDIO_STREAM_VALIDATE(stream); + + /* Note: If nmbem * size > SIZE_MAX then there is an application + * bug since no array can be larger than SIZE_MAX in size. */ + + if ((__STDIO_STREAM_IS_NARROW_WRITING(stream) + || !__STDIO_STREAM_TRANS_TO_WRITE(stream, __FLAG_NARROW)) + && size && nmemb + ) { + + if (nmemb <= (SIZE_MAX / size)) { + return __stdio_fwrite((const unsigned char *) ptr, + size*nmemb, stream) / size; + } + + __STDIO_STREAM_SET_ERROR(stream); + __set_errno(EINVAL); + } + + return 0; +} + +#elif defined __UCLIBC_HAS_THREADS__ + +size_t fwrite(const void * __restrict ptr, size_t size, + size_t nmemb, register FILE * __restrict stream) +{ + size_t retval; + __STDIO_AUTO_THREADLOCK_VAR; + + __STDIO_AUTO_THREADLOCK(stream); + + retval = __fwrite_unlocked(ptr, size, nmemb, stream); + + __STDIO_AUTO_THREADUNLOCK(stream); + + return retval; +} + +#endif -- cgit v1.2.3