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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2013-03-01 14:37:58 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2013-03-01 14:37:58 +0100 |
| commit | c09fd27c0a1bc45b3bca4347f3ef7713c3898656 (patch) | |
| tree | ca2506ed095a9c75550366821b255ee915d91400 /archival | |
| parent | 2fe5fed2dfea4ffdb8af5f6352ea2c19641de3bd (diff) | |
| download | busybox-c09fd27c0a1bc45b3bca4347f3ef7713c3898656.tar.gz | |
decompress_unlzma: make "fast" version a bit smaller
It is not slower. In fact it seems a tiny bit faster too.
text data bss dec hex filename
2827 0 0 2827 b0b decompress_unlzma.o
2797 0 0 2797 aed decompress_unlzma.o
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival')
| -rw-r--r-- | archival/libarchive/decompress_unlzma.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/archival/libarchive/decompress_unlzma.c b/archival/libarchive/decompress_unlzma.c index cfde8ea56..dd08e77f3 100644 --- a/archival/libarchive/decompress_unlzma.c +++ b/archival/libarchive/decompress_unlzma.c @@ -45,16 +45,16 @@ typedef struct { #define RC_MODEL_TOTAL_BITS 11 -/* Called twice: once at startup (LZMA_FAST only) and once in rc_normalize() */ -static size_inline void rc_read(rc_t *rc) +/* Called once in rc_do_normalize() */ +static void rc_read(rc_t *rc) { int buffer_size = safe_read(rc->fd, RC_BUFFER, RC_BUFFER_SIZE); //TODO: return -1 instead //This will make unlzma delete broken unpacked file on unpack errors if (buffer_size <= 0) bb_error_msg_and_die("unexpected EOF"); - rc->ptr = RC_BUFFER; rc->buffer_end = RC_BUFFER + buffer_size; + rc->ptr = RC_BUFFER; } /* Called twice, but one callsite is in speed_inline'd rc_is_bit_1() */ @@ -78,15 +78,9 @@ static ALWAYS_INLINE rc_t* rc_init(int fd) /*, int buffer_size) */ /* rc->ptr = rc->buffer_end; */ for (i = 0; i < 5; i++) { -#if ENABLE_FEATURE_LZMA_FAST - if (rc->ptr >= rc->buffer_end) - rc_read(rc); - rc->code = (rc->code << 8) | *rc->ptr++; -#else rc_do_normalize(rc); -#endif } - rc->range = 0xFFFFFFFF; + rc->range = 0xffffffff; return rc; } |