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heap: update the calculation of fl index max and use bitfield in control_t

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The calculation of fl index max is changed to always be the smallest
number that includes the size of the registered memory.

The control_construct() function now checks for minimum size as the control structure
parameters are calculated.

There is no longer a minimum configuration for fl index max so the tlsf_config
enum is striped down to remove unecessary compile time values.

the tlsf_size() function will fail if no tlsf pointer is passed as parameter since there
is no way to calculate a default tlsf size anymore.

bitfields are now used in control_t when possible which reduces the size of the structure
from 56 bytes to 36 bytes.
This commit is contained in:
Guillaume Souchere
2022-10-13 10:02:29 +02:00
parent a1ca11551f
commit d4de73cd2c
5 changed files with 97 additions and 64 deletions
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3
components/heap/heap_tlsf_block_functions.h
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@@ -63,11 +63,8 @@
** A free block must be large enough to store its header minus the size of
** the prev_phys_block field, and no larger than the number of addressable
** bits for FL_INDEX.
** The block_size_max macro returns the maximum block for the minimum pool
** use tlsf_block_size_max for a value specific to the pool
*/
#define block_size_min (sizeof(block_header_t) - sizeof(block_header_t*))
#define block_size_max (tlsf_cast(size_t, 1) << FL_INDEX_MAX_MIN)
/*
** block_header_t member functions.