txr - TXR: A data munging language.

	Commit message (Collapse)	Author	Age	Files	Lines
*	* HACKING: Updating generational GC notes in light of changes.	Kaz Kylheku	2014-03-29	1	-34/+43
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*	Fix a bug arising from putting generation 1 objects into the	Kaz Kylheku	2014-03-27	1	-15/+45
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	checkobj array (via the mut macro that expands to gc_mutated). The garbage collector assumes that checkobj has only generation 0 objects, which all exist in the freshobj array, which is subject to a sweep. So gen 1 objects in checkobj are never cleaned up properly: they do not have their REACHABLE flag reset, or their generation restored to 1. To fix this, a new array for these objects is introduced separate from checkobj. * gc.c (MUTOBJ_VEC_SIZE): New preprocessor symbol. (mutobj, mutobj_idx): New static array and integer. (mark_obj): Check for REACHABLE flag before checking the full_gc flag and generation, since those cost additional memory accesses. (mark): Mark the objects in the new mutobj array. (sweep): Sweep the objects in the mutobj array. (gc): Reset mutobx_idx to zero after gc. (gc_set): Rearrange logic. In the case that the checkobj array is full and a gc is done to make room, there is no point in adding to the array: the gc pass moves all babies to generation 1, so the object that was passed into the function is no longer a baby. (gc_mutated): Rewrite in terms of mutobj rather than checkobj, fixing the bug. * HACKING: Improved documentation of GC. Describe mut macro and mutobj array.
*	Fixed occurrences of "garbage allocator". :)	Kaz Kylheku	2013-12-10	1	-4/+5
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*	Spellcheck.	Kaz Kylheku	2013-12-05	1	-17/+17
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*	* HACKING: Added notes on generational garbage collection.	Kaz Kylheku	2012-04-14	1	-0/+110
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*	* configure: Switch from _POSIX_C_SOURCE=2 to _XOPEN_SOURCE.	Kaz Kylheku	2012-04-10	1	-4/+4
\| \| \| \| \| \| \| \|	We will be relying on the gettimeofday function which only came into POSIX in 2001, but was in Unix long before then. * HACKING: Replace notes about -D_POSIX_C_SOURCE which are not true any more.
*	* HACKING: Added note about register save areas, which can contribute	Kaz Kylheku	2012-02-12	1	-1/+3
\| \| \| \|	to spurious retention.
*	* HACKING: Grammar fixes. Expanded on lazy strings a little bit.	Kaz Kylheku	2011-10-29	1	-35/+68
\| \| \| \| \|	Added something about mem_t *, and a few extra words here and there, including a blurb about a Valgrind debugging caveat.
*	Fix section numbering mixup.	Kaz Kylheku	2011-10-10	1	-2/+2
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*	* HACKING: Documented portability hacks for narrow wchar_t.	Kaz Kylheku	2011-10-10	1	-1/+59
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*	* HACKING: Formatting.	Kaz Kylheku	2011-10-08	1	-8/+10
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*	HACKING: Clarified that --vg-debug is also needed to turn on on	Kaz Kylheku	2011-10-01	1	-2/+4
\| \| \| \|	the Valgrind support at run-time, in addition to building it in.
*	* HACKING: Updated with debugging hints.	Kaz Kylheku	2011-09-30	1	-4/+210
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*	Spelling.	Kaz Kylheku	2011-09-20	1	-2/+2
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*	This should be under version control.	Kaz Kylheku	2011-09-01	1	-0/+516