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dirstate-v2: no longer register the data-file during transaction...

dirstate-v2: no longer register the data-file during transaction If the data file change during the transaction, we cannot truncate it. The content of the file itself is fine as it will get backed up at the same time as the docket. Leaving the trailing data at the end of failed transaction is fine. The dirstate-v2 format supports it. The dead data will simply we written over if necessary.

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             zstd_compress_literals.h
        
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      /*

       * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.

       * All rights reserved.

       *

       * This source code is licensed under both the BSD-style license (found in the

       * LICENSE file in the root directory of this source tree) and the GPLv2 (found

       * in the COPYING file in the root directory of this source tree).

       * You may select, at your option, one of the above-listed licenses.

       */

      #ifndef ZSTD_COMPRESS_LITERALS_H

      #define ZSTD_COMPRESS_LITERALS_H

      #include "zstd_compress_internal.h" /* ZSTD_hufCTables_t, ZSTD_minGain() */

      size_t ZSTD_noCompressLiterals (void* dst, size_t dstCapacity, const void* src, size_t srcSize);

      size_t ZSTD_compressRleLiteralsBlock (void* dst, size_t dstCapacity, const void* src, size_t srcSize);

      size_t ZSTD_compressLiterals (ZSTD_hufCTables_t const* prevHuf,

                                    ZSTD_hufCTables_t* nextHuf,

                                    ZSTD_strategy strategy, int disableLiteralCompression,

                                    void* dst, size_t dstCapacity,

                              const void* src, size_t srcSize,

                                    void* entropyWorkspace, size_t entropyWorkspaceSize,

                              const int bmi2);

      #endif /* ZSTD_COMPRESS_LITERALS_H */

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				/*
				* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
				* All rights reserved.
				*
				* This source code is licensed under both the BSD-style license (found in the
				* LICENSE file in the root directory of this source tree) and the GPLv2 (found
				* in the COPYING file in the root directory of this source tree).
				* You may select, at your option, one of the above-listed licenses.
				*/

				#ifndef ZSTD_COMPRESS_LITERALS_H
				#define ZSTD_COMPRESS_LITERALS_H

				#include "zstd_compress_internal.h" /* ZSTD_hufCTables_t, ZSTD_minGain() */


				size_t ZSTD_noCompressLiterals (void* dst, size_t dstCapacity, const void* src, size_t srcSize);

				size_t ZSTD_compressRleLiteralsBlock (void* dst, size_t dstCapacity, const void* src, size_t srcSize);

				size_t ZSTD_compressLiterals (ZSTD_hufCTables_t const* prevHuf,
				ZSTD_hufCTables_t* nextHuf,
				ZSTD_strategy strategy, int disableLiteralCompression,
				void* dst, size_t dstCapacity,
				const void* src, size_t srcSize,
				void* entropyWorkspace, size_t entropyWorkspaceSize,
				const int bmi2);

				#endif /* ZSTD_COMPRESS_LITERALS_H */