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fix(tlsf): tlsf_fit_size GoodFit

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The good fit mechanism should not be applied for small blocks.
If the size in parameter is inferior to control->small_block_size.
then the function tlsf_fit_size should return size directly.
This commit is contained in:
Guillaume Souchere
2024-01-15 11:37:24 +01:00
parent d2e28f8724
commit 32701a163d
1 changed files with 12 additions and 9 deletions
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21
tlsf.c
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@@ -795,17 +795,20 @@ int tlsf_check_pool(pool_t pool)
size_t tlsf_fit_size(tlsf_t tlsf, size_t size)
{
/* because it's GoodFit, allocable size is one range lower */
if (size && tlsf != NULL)
{
size_t sl_interval;
control_t* control = tlsf_cast(control_t*, tlsf);
sl_interval = (1 << (32 - __builtin_clz(size) - 1)) / control->sl_index_count;
return size & ~(sl_interval - 1);
if (size == 0 || tlsf == NULL) {
return 0;
}
return 0;
}
control_t* control = tlsf_cast(control_t*, tlsf);
if (size < control->small_block_size) {
return adjust_request_size(tlsf, size, ALIGN_SIZE);
}
/* because it's GoodFit, allocable size is one range lower */
size_t sl_interval;
sl_interval = (1 << (32 - __builtin_clz(size) - 1)) / control->sl_index_count;
return size & ~(sl_interval - 1);
}
/*
** Size of the TLSF structures in a given memory block passed to