trigger adjustmeant: Take yield (freed cells) for all freelists
into account.
(SCM_INIT_HEAP_SIZE_1, SCM_GC_TRIGGER_1, SCM_GC_TRIGGER_2): Tuned
to 50000 cell heap with 45% trigger.
(scm_gc_cells_collected): Reintroduced.
(SCM_HEAP_SIZE): New macro.
(scm_gc_sweep): Reintroduced correct computation of
scm_cells_allocated.
(scm_freelist_t): Corrected commentary for field `cluster_size':
Clustersize counts objects, not cells; New member
`clusters_allocated'.
* gc.h: (typedef struct scm_freelist_t) remove from here.
* gc.c: (CELL_UP, CELL_DN) make these macros take additional
parameter (the span).
(CLUSTER_SIZE_IN_BYTES, ALIGNMENT_SLACK) new macros.
(typedef struct scm_freelist_t) move here from gc.h, it had no
business being externally visible.
(typedef struct scm_heap_seg_data_t) renamed from
scm_heap_seg_data, to be style-compliant.
(scm_mark_locations) if the possible pointer points to a
multy-cell, check that it's properly aligned.
(init_heap_seg) alighn multy-cells properly, work with the
assumption that the segment size divides cleanly by cluster size
(so that there's no spill).
(round_to_cluster_size) new function.
(alloc_some_heap, make_initial_segment) use round_to_cluster_size
to satisfy the new init_heap_seg invariant.
Cluster sizes are now independent of GC trigger values.
GUILE_GC_TRIGGER_n can now specify a relative trigger value:
A negative integer gives fraction of total heap size in percent.
(SCM_GC_TRIGGER_1, SCM_GC_TRIGGER_2): Default values set to -40.
Cluster sizes are now independent of GC trigger values.
GUILE_GC_TRIGGER_n can now specify a relative trigger value:
A negative integer gives fraction of total heap size in percent.
generate the latter from the concrete listing of the former. Then
make guile-procedures.txt depend on DOT_DOC_FILES instead of
*.doc, so that rebuilding it works.
allocating heap. The basic idea is to trigger GC every Nth
allocated cell and grow heap when free list runs out. The scheme
has been extended so that GC isn't triggered until all remaining
cells are used. The implementation is also prepared for
development in the direction of POSIX threads.
* gc.c (SCM_EXPHEAP): In order to grow by a factor of 1.5,
SCM_EXPHEAP should return half of the heap size.
configured with --enable-guile-debug.
* init.c (scm_i_getenv_int): New function.
(scm_boot_guile_1): Use the environment variables
GUILE_INIT_HEAP_SIZE, GUILE_INIT_HEAP_SIZE2 to select heap size if
they exist. (This may be replaced by a Scheme level mechanism in
the future.)
