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wip: change decommit expiration

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daan 2021-11-12 17:31:21 -08:00
parent ba6b4bf622
commit c6b82a4b37
3 changed files with 17 additions and 3 deletions
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2
CMakeLists.txt
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@ -176,7 +176,7 @@ endif()
# Compiler flags
if(CMAKE_C_COMPILER_ID MATCHES "AppleClang|Clang|GNU")
list(APPEND mi_cflags -Wall -Wextra -Wno-unknown-pragmas -fvisibility=hidden)
list(APPEND mi_cflags -Wall -Wextra -Wno-unknown-pragmas -fvisibility=hidden $<$<CONFIG:RELEASE>:-O3>)
if(NOT MI_USE_CXX)
list(APPEND mi_cflags -Wstrict-prototypes)
endif()

2
src/options.c
View file

@ -89,7 +89,7 @@ static mi_option_desc_t options[_mi_option_last] =
{ 1, UNINIT, MI_OPTION(eager_commit_delay) }, // the first N segments per thread are not eagerly committed (but per page in the segment on demand)
#endif
{ 1, UNINIT, MI_OPTION(allow_decommit) }, // decommit slices when no longer used (after reset_delay milli-seconds)
{ 100, UNINIT, MI_OPTION(reset_delay) }, // page reset delay in milli-seconds (= decommit)
{ 50, UNINIT, MI_OPTION(reset_delay) }, // page reset delay in milli-seconds (= decommit)
{ 500, UNINIT, MI_OPTION(segment_decommit_delay) },// decommit delay in milli-seconds for freed segments
{ 0, UNINIT, MI_OPTION(use_numa_nodes) }, // 0 = use available numa nodes, otherwise use at most N nodes.
{ 0, UNINIT, MI_OPTION(limit_os_alloc) }, // 1 = do not use OS memory for allocation (but only reserved arenas)

16
src/segment.c
View file

@ -416,7 +416,21 @@ static void mi_segment_perhaps_decommit(mi_segment_t* segment, uint8_t* p, size_
// update delayed commit
mi_commit_mask_set(&segment->decommit_mask, mi_commit_mask_intersect(mask,segment->commit_mask)); // only decommit what is committed; span_free may try to decommit more
segment->decommit_expire = _mi_clock_now() + mi_option_get(mi_option_reset_delay);
mi_msecs_t now = _mi_clock_now();
if (segment->decommit_expire == 0) {
// no previous decommits, initialize now
mi_assert_internal(mi_commit_mask_is_empty(segment->decommit_mask));
segment->decommit_expire = now + mi_option_get(mi_option_reset_delay);
}
else if (segment->decommit_expire <= now) {
// previous decommit mask already expired
// mi_segment_delayed_decommit(segment, true, stats);
segment->decommit_expire = now + 1;
}
else {
// previous decommit mask is not yet expired
// segment->decommit_expire++;
}
}
}