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| author | Ivan Maidanski <ivmai@mail.ru> | 2013-12-09 08:44:05 +0400 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2013-12-09 08:44:05 +0400 |
| commit | fae0f4b8139040c77d54449d976276bc53653990 (patch) | |
| tree | d6471e0a257dc7c32964988311d9b5d84d8f5512 | |
| parent | 8452b163eaa4ef4cb2cffcf564d749ee834af038 (diff) | |
| download | bdwgc-fae0f4b8139040c77d54449d976276bc53653990.tar.gz | |
Remove non-existing DISCARD_WORDS from GC data structure ASCII diagram
* doc/tree.html (picture): Remove DISCARD_WORDS (since always zero
and already removed from the code in gc-6.0alpha6).
| -rw-r--r-- | doc/tree.html | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/doc/tree.html b/doc/tree.html index d52e2fa2..429ae19d 100644 --- a/doc/tree.html +++ b/doc/tree.html @@ -163,7 +163,7 @@ GET_HDR(p)| word hb_sz (words) | | | hb_last_reclaimed | --- +----------------------+ ^ | | - MARK_BITS| hb_marks[] | *if hdr is free, hb_sz + DISCARD_WORDS + MARK_BITS| hb_marks[] | *if hdr is free, hb_sz _SZ(words)| | is the size of a heap chunk (struct hblk) v | | of at least MININCR*HBLKSIZE bytes (below), --- +----------------------+ otherwise, size of each object in chunk. @@ -172,20 +172,20 @@ Dynamic data structures above are interleaved throughout the heap in blocks of size MININCR * HBLKSIZE bytes as done by gc_scratch_alloc which cannot be freed; free lists are used (e.g. alloc_hdr). HBLK's below are collected. - (struct hblk) - --- +----------------------+ < HBLKSIZE --- --- DISCARD_ - ^ |garbage[DISCARD_WORDS]| aligned ^ ^ HDR_BYTES WORDS - | | | | v (bytes) (words) - | +-----hb_body----------+ < WORDSZ | --- --- - | | | aligned | ^ ^ - | | Object 0 | | hb_sz | - | | | i |(word- (words)| - | | | (bytes)|aligned) v | - | + - - - - - - - - - - -+ --- | --- | - | | | ^ | ^ | - n * | | j (words) | hb_sz BODY_SZ - HBLKSIZE | Object 1 | v v | (words) - (bytes) | |--------------- v MAX_OFFSET + (struct hblk) HDR_BYTES + --- +----------------------+ < HBLKSIZE --- (bytes) + ^ +-----hb_body----------+ (and WORDSZ) ^ --- --- + | | | aligned | ^ ^ + | | | | hb_sz | + | | | | (words) | + | | Object 0 | | | | + | | | i |(word- v | + | + - - - - - - - - - - -+ --- (bytes)|aligned) --- | + | | | ^ | ^ | + | | | j (words) | | | + n * | Object 1 | v v hb_sz BODY_SZ + HBLKSIZE | |--------------- | (words) + (bytes) | | v MAX_OFFSET | + - - - - - - - - - - -+ --- (bytes) | | | !All_INTERIOR_PTRS ^ | | | | sets j only for hb_sz | @@ -193,7 +193,5 @@ freed; free lists are used (e.g. alloc_hdr). HBLK's below are collected. v | | All objects WORDSZ v v --- +----------------------+ aligned. --- --- -DISCARD_WORDS is normally zero. Indeed the collector has not been tested -with another value in ages. -</pre> +</PRE> </body> |