zstd/decompress/zstd_decompress_block.c

72 /* Allocate buffer for literals, either overlapping current dst, or split between dst and litExtraBuffer, or stored entirely within litExtraBuffer */
85         /* won't fit in litExtraBuffer, so it will be split between end of dst and extra buffer */
87             /* won't fit in litExtraBuffer, so it will be split between end of dst and extra buffer */
92             /* initially this will be stored entirely in dst during huffman decoding, it will partially shifted to litExtraBuffer after */
100         /* fits entirely within litExtraBuffer, so no split is necessary */
101         dctx->litBuffer = dctx->litExtraBuffer;
115  * stored in dctx->litExtraBuffer to help keep it "ahead" of the current output write.
209                     ZSTD_memcpy(dctx->litExtraBuffer, dctx->litBufferEnd - ZSTD_LITBUFFEREXTRASIZE, ZSTD_LITBUFFEREXTRASIZE);
252                         ZSTD_memcpy(dctx->litExtraBuffer, istart + lhSize + litSize - ZSTD_LITBUFFEREXTRASIZE, ZSTD_LITBUFFEREXTRASIZE);
297                     ZSTD_memset(dctx->litExtraBuffer, istart[lhSize], ZSTD_LITBUFFEREXTRASIZE);
1422             /* Handle the initial state where litBuffer is currently split between dst and litExtraBuffer */
1439             /* If there are more sequences, they will need to read literals from litExtraBuffer; copy over the remainder from dst and update litPtr and litEnd */
1449                 litPtr = dctx->litExtraBuffer;
1450                 litBufferEnd = dctx->litExtraBuffer + ZSTD_LITBUFFEREXTRASIZE;
1514     if (dctx->litBufferLocation == ZSTD_split)  /* split hasn't been reached yet, first get dst then copy litExtraBuffer */
1522         litPtr = dctx->litExtraBuffer;
1523         litBufferEnd = dctx->litExtraBuffer + ZSTD_LITBUFFEREXTRASIZE;
1723                 /* lit buffer is reaching split point, empty out the first buffer and transition to litExtraBuffer */
1732                 litPtr = dctx->litExtraBuffer;
1733                 litBufferEnd = dctx->litExtraBuffer + ZSTD_LITBUFFEREXTRASIZE;
1779                 litPtr = dctx->litExtraBuffer;
1780                 litBufferEnd = dctx->litExtraBuffer + ZSTD_LITBUFFEREXTRASIZE;
1811     if (dctx->litBufferLocation == ZSTD_split)  /* first deplete literal buffer in dst, then copy litExtraBuffer */
1819         litPtr = dctx->litExtraBuffer;
1820         litBufferEnd = dctx->litExtraBuffer + ZSTD_LITBUFFEREXTRASIZE;