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Optimize basic_ostream::write by having it call sputn instead of sputc. 

llvm-svn: 172542
This commit is contained in:
Howard Hinnant 2013-01-15 17:22:03 +00:00
parent 701d2b861e
commit 3d7eb2f806
1 changed files with 2 additions and 11 deletions
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13
libcxx/include/ostream
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@ -1100,17 +1100,8 @@ basic_ostream<_CharT, _Traits>::write(const char_type* __s, streamsize __n)
sentry __sen(*this);
if (__sen && __n)
{
typedef ostreambuf_iterator<_CharT, _Traits> _Op;
_Op __o(*this);
for (; __n; --__n, ++__o, ++__s)
{
*__o = *__s;
if (__o.failed())
{
this->setstate(ios_base::badbit);
break;
}
}
if (this->rdbuf()->sputn(__s, __n) != __n)
this->setstate(ios_base::badbit);
}
#ifndef _LIBCPP_NO_EXCEPTIONS
}