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Fix _memconfig() functions.

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This affects lzma_memusage() and lzma_memlimit_get().
This commit is contained in:
Lasse Collin 2010-01-01 00:29:10 +02:00
parent 1a7ec87c8e
commit 8ea8dc754a
4 changed files with 21 additions and 20 deletions
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7
src/liblzma/api/lzma/index.h
View file

@ -615,13 +615,6 @@ extern LZMA_API(lzma_ret) lzma_index_encoder(
* - LZMA_MEM_ERROR * - LZMA_MEM_ERROR
* - LZMA_MEMLIMIT_ERROR * - LZMA_MEMLIMIT_ERROR
* - LZMA_PROG_ERROR * - LZMA_PROG_ERROR
*
* \note The memory usage limit is checked early in the decoding
* (within the first dozen input bytes or so). The actual memory
* is allocated later in smaller pieces. If the memory usage
* limit is modified with lzma_memlimit_set() after a part
* of the Index has already been decoded, the new limit may
* get ignored.
*/ */
extern LZMA_API(lzma_ret) lzma_index_decoder( extern LZMA_API(lzma_ret) lzma_index_decoder(
lzma_stream *strm, lzma_index **i, uint64_t memlimit) lzma_stream *strm, lzma_index **i, uint64_t memlimit)

9
src/liblzma/common/alone_decoder.c
View file

@ -173,12 +173,15 @@ static lzma_ret
alone_decoder_memconfig(lzma_coder *coder, uint64_t *memusage, alone_decoder_memconfig(lzma_coder *coder, uint64_t *memusage,
uint64_t *old_memlimit, uint64_t new_memlimit) uint64_t *old_memlimit, uint64_t new_memlimit)
{ {
if (new_memlimit != 0 && new_memlimit < coder->memusage)
return LZMA_MEMLIMIT_ERROR;
*memusage = coder->memusage; *memusage = coder->memusage;
*old_memlimit = coder->memlimit; *old_memlimit = coder->memlimit;
if (new_memlimit != 0) {
if (new_memlimit < coder->memusage)
return LZMA_MEMLIMIT_ERROR;
coder->memlimit = new_memlimit; coder->memlimit = new_memlimit;
}
return LZMA_OK; return LZMA_OK;
} }

6
src/liblzma/common/index_decoder.c
View file

@ -219,12 +219,14 @@ index_decoder_memconfig(lzma_coder *coder, uint64_t *memusage,
uint64_t *old_memlimit, uint64_t new_memlimit) uint64_t *old_memlimit, uint64_t new_memlimit)
{ {
*memusage = lzma_index_memusage(1, coder->count); *memusage = lzma_index_memusage(1, coder->count);
*old_memlimit = coder->memlimit;
if (new_memlimit != 0 && new_memlimit < *memusage) if (new_memlimit != 0) {
if (new_memlimit < *memusage)
return LZMA_MEMLIMIT_ERROR; return LZMA_MEMLIMIT_ERROR;
*old_memlimit = coder->memlimit;
coder->memlimit = new_memlimit; coder->memlimit = new_memlimit;
}
return LZMA_OK; return LZMA_OK;
} }

9
src/liblzma/common/stream_decoder.c
View file

@ -383,12 +383,15 @@ static lzma_ret
stream_decoder_memconfig(lzma_coder *coder, uint64_t *memusage, stream_decoder_memconfig(lzma_coder *coder, uint64_t *memusage,
uint64_t *old_memlimit, uint64_t new_memlimit) uint64_t *old_memlimit, uint64_t new_memlimit)
{ {
if (new_memlimit != 0 && new_memlimit < coder->memusage)
return LZMA_MEMLIMIT_ERROR;
*memusage = coder->memusage; *memusage = coder->memusage;
*old_memlimit = coder->memlimit; *old_memlimit = coder->memlimit;
if (new_memlimit != 0) {
if (new_memlimit < coder->memusage)
return LZMA_MEMLIMIT_ERROR;
coder->memlimit = new_memlimit; coder->memlimit = new_memlimit;
}
return LZMA_OK; return LZMA_OK;
} }