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-rw-r--r--src/liblzma/common/memory_usage.c112
1 files changed, 0 insertions, 112 deletions
diff --git a/src/liblzma/common/memory_usage.c b/src/liblzma/common/memory_usage.c
deleted file mode 100644
index 8244c404..00000000
--- a/src/liblzma/common/memory_usage.c
+++ /dev/null
@@ -1,112 +0,0 @@
-///////////////////////////////////////////////////////////////////////////////
-//
-/// \file memory_usage.c
-/// \brief Calculate rough amount of memory required by filters
-//
-// Copyright (C) 2007 Lasse Collin
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either
-// version 2.1 of the License, or (at your option) any later version.
-//
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// Lesser General Public License for more details.
-//
-///////////////////////////////////////////////////////////////////////////////
-
-#include "common.h"
-#include "lz_encoder.h"
-#include "lzma_literal.h"
-
-
-static uint64_t
-get_usage(const lzma_options_filter *filter, bool is_encoder)
-{
- uint64_t ret;
-
- switch (filter->id) {
- case LZMA_FILTER_X86:
- case LZMA_FILTER_POWERPC:
- case LZMA_FILTER_IA64:
- case LZMA_FILTER_ARM:
- case LZMA_FILTER_ARMTHUMB:
- case LZMA_FILTER_SPARC:
- case LZMA_FILTER_DELTA:
- // These don't require any significant amount of memory.
- ret = 0;
- break;
-
- case LZMA_FILTER_SUBBLOCK:
- if (is_encoder) {
- const lzma_options_subblock *options = filter->options;
- ret = options->subblock_data_size;
- } else {
- ret = 0;
- }
- break;
-
-#ifdef HAVE_FILTER_LZMA
- case LZMA_FILTER_LZMA: {
- const lzma_options_lzma *options = filter->options;
-
- // Literal coder - this can be signficant if both values are
- // big, or if sizeof(probability) is big.
- ret = literal_states(options->literal_context_bits,
- options->literal_pos_bits) * LIT_SIZE
- * sizeof(probability);
-
- // Dictionary base size
- ret += options->dictionary_size;
-
- if (is_encoder) {
-# ifdef HAVE_ENCODER
- // This is rough, but should be accurate enough
- // in practice.
- ret += options->dictionary_size / 2;
-
- uint32_t dummy1;
- uint32_t dummy2;
- uint32_t num_items;
- if (lzma_lz_encoder_hash_properties(
- options->match_finder,
- options->dictionary_size,
- &dummy1, &dummy2, &num_items))
- return UINT64_MAX;
-
- ret += (uint64_t)(num_items) * sizeof(uint32_t);
-# else
- return UINT64_MAX;
-# endif
- }
-
- break;
- }
-#endif
-
- default:
- return UINT64_MAX;
- }
-
- return ret;
-}
-
-
-extern LZMA_API uint32_t
-lzma_memory_usage(const lzma_options_filter *filters, lzma_bool is_encoder)
-{
- uint64_t usage = 0;
-
- for (size_t i = 0; filters[i].id != UINT64_MAX; ++i) {
- const uint64_t ret = get_usage(filters + i, is_encoder);
- if (ret == UINT64_MAX)
- return UINT32_MAX;
-
- usage += ret;
- }
-
- // Convert to mebibytes with rounding.
- return usage / (1024 * 1024) + (usage % (1024 * 1024) >= 512 ? 1 : 0);
-}