diff options
| author | Denys Vlasenko <dvlasenk@redhat.com> | 2010-10-29 19:01:58 +0200 |
|---|---|---|
| committer | Denys Vlasenko <dvlasenk@redhat.com> | 2010-10-29 19:01:58 +0200 |
| commit | 1014a9adbf2f32684865b052bab803581d416875 (patch) | |
| tree | 333b518e23d4404ba529c4fe70fce27a1125492b /include | |
| parent | bf3bec51fced9dbc800954885191e5671cb485ef (diff) | |
| download | busybox-1014a9adbf2f32684865b052bab803581d416875.tar.gz | |
decompress_bunzip2: relieve register pressure in hot function read_bunzip
function old new delta
unpack_bz2_stream 318 329 +11
read_bunzip 268 262 -6
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/unarchive.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/unarchive.h b/include/unarchive.h index 11d8c77a0..ba6d323e0 100644 --- a/include/unarchive.h +++ b/include/unarchive.h @@ -194,6 +194,8 @@ extern const llist_t *find_list_entry2(const llist_t *list, const char *filename /* A bit of bunzip2 internals are exposed for compressed help support: */ typedef struct bunzip_data bunzip_data; int start_bunzip(bunzip_data **bdp, int in_fd, const void *inbuf, int len) FAST_FUNC; +/* NB: read_bunzip returns < 0 on error, or the number of *unfilled* bytes + * in outbuf. IOW: on EOF returns len ("all bytes are not filled"), not 0: */ int read_bunzip(bunzip_data *bd, char *outbuf, int len) FAST_FUNC; void dealloc_bunzip(bunzip_data *bd) FAST_FUNC; |