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[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3

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Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3
License: MIT
This commit is contained in:
Timo Kreuzer 2024-05-11 07:03:12 +02:00
parent f1b60c66f0
commit 04e0dc4a7a
568 changed files with 115483 additions and 0 deletions
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43
sdk/lib/ucrt/stdio/_getbuf.cpp Normal file
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//
// _getbuf.cpp
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// Defines __acrt_stdio_allocate_buffer_nolock(), which allocates a buffer for a stream.
//
#include <corecrt_internal_stdio.h>
// Allocates a buffer for the provided stream. This function assumes that the
// caller has already checked to ensure that the stream does not already have a
// buffer.
extern "C" void __cdecl __acrt_stdio_allocate_buffer_nolock(FILE* const public_stream)
{
_ASSERTE(public_stream != nullptr);
__crt_stdio_stream const stream(public_stream);
#ifndef CRTDLL
++_cflush; // Force the library pre-termination procedure to run
#endif
// Try to get a big buffer:
stream->_base = _calloc_crt_t(char, _INTERNAL_BUFSIZ).detach();
if (stream->_base != nullptr)
{
stream.set_flags(_IOBUFFER_CRT);
stream->_bufsiz = _INTERNAL_BUFSIZ;
}
// If we couldn't get a big buffer, use single character buffering:
else
{
stream.set_flags(_IOBUFFER_NONE);
stream->_base = reinterpret_cast<char *>(&stream->_charbuf);
stream->_bufsiz = 2;
}
stream->_ptr = stream->_base;
stream->_cnt = 0;
}