diff options
| author | jonrumsey <jrumsey@uk.ibm.com> | 2022-07-11 10:28:32 (GMT) |
|---|---|---|
| committer | jonrumsey <jrumsey@uk.ibm.com> | 2022-07-11 10:28:32 (GMT) |
| commit | b4f508608f8f9423350cf48e46dd22c452f0b809 (patch) | |
| tree | 4cb175fe5ccd15449add65fce82536f80f925b0a /lib/lz4hc.h | |
| parent | 0b0e3330bcc62b8582ce6fee3a7465391f7b56c7 (diff) | |
| download | lz4-b4f508608f8f9423350cf48e46dd22c452f0b809.zip lz4-b4f508608f8f9423350cf48e46dd22c452f0b809.tar.gz lz4-b4f508608f8f9423350cf48e46dd22c452f0b809.tar.bz2 | |
Change definitions of LZ4_STREAMSIZE, LZ4_STREAMDECODESIZE and LZ4_STREAMHCSIZE to factor in OS400 pointer length and structure alignment rules
Update the length values on platforms where pointers are 16-bytes, factor in implicit compiler padding to ensure proper alignment of members and overall structure lengths
Diffstat (limited to 'lib/lz4hc.h')
| -rw-r--r-- | lib/lz4hc.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/lib/lz4hc.h b/lib/lz4hc.h index f4afc9b..6176457 100644 --- a/lib/lz4hc.h +++ b/lib/lz4hc.h @@ -219,8 +219,26 @@ struct LZ4HC_CCtx_internal /* Do not use these definitions directly ! * Declare or allocate an LZ4_streamHC_t instead. + * Note : OS400 uses 16 byte pointers and so the structure size is larger than other + * platforms + * |=========================================================== + * | Offset | Length | Member Name + * |=========================================================== + * | 0 | 131072 | hashTable[32768] + * | 131072 | 131072 | chainTable[65536] + * | 262144 | 16 | end + * | 262160 | 16 | base + * | 262176 | 16 | dictBase + * | 262192 | 4 | dictLimit + * | 262196 | 4 | lowLimit + * | 262200 | 4 | nextToUpdate + * | 262204 | 2 | compressionLevel + * | 262206 | 1 | favorDecSpeed + * | 262207 | 1 | dirty + * | 262208 | 16 | dictCtx + * ============================================================ */ -#define LZ4_STREAMHCSIZE 262200 /* static size, for inter-version compatibility */ +#define LZ4_STREAMHCSIZE (262200 + ((sizeof(void*)==16) ? 24 : 0)) /* static size, for inter-version compatibility */ #define LZ4_STREAMHCSIZE_VOIDP (LZ4_STREAMHCSIZE / sizeof(void*)) union LZ4_streamHC_u { void* table[LZ4_STREAMHCSIZE_VOIDP]; |