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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
//===- circular_raw_ostream.cpp - Implement circular_raw_ostream ----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This implements support for circular buffered streams.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/circular_raw_ostream.h"
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#include <algorithm>
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using namespace llvm;
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void circular_raw_ostream::write_impl(const char *Ptr, size_t Size) {
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if (BufferSize == 0) {
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TheStream->write(Ptr, Size);
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return;
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}
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// Write into the buffer, wrapping if necessary.
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while (Size != 0) {
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unsigned Bytes =
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std::min(unsigned(Size), unsigned(BufferSize - (Cur - BufferArray)));
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memcpy(Cur, Ptr, Bytes);
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Size -= Bytes;
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Cur += Bytes;
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if (Cur == BufferArray + BufferSize) {
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// Reset the output pointer to the start of the buffer.
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Cur = BufferArray;
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Filled = true;
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}
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}
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}
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void circular_raw_ostream::flushBufferWithBanner() {
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if (BufferSize != 0) {
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// Write out the buffer
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TheStream->write(Banner, std::strlen(Banner));
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flushBuffer();
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}
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}
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