esp-idf/components/heap/Kconfig

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menu "Heap memory debugging"
choice HEAP_CORRUPTION_DETECTION
prompt "Heap corruption detection"
default HEAP_POISONING_DISABLED
help
Enable heap poisoning features to detect heap corruption caused by out-of-bounds access to heap memory.
See the "Heap Memory Debugging" page of the IDF documentation
for a description of each level of heap corruption detection.
config HEAP_POISONING_DISABLED
bool "Basic (no poisoning)"
config HEAP_POISONING_LIGHT
bool "Light impact"
config HEAP_POISONING_COMPREHENSIVE
bool "Comprehensive"
endchoice
choice HEAP_TRACING_DEST
bool "Heap tracing"
default HEAP_TRACING_OFF
help
Enables the heap tracing API defined in esp_heap_trace.h.
This function causes a moderate increase in IRAM code side and a minor increase in heap function
(malloc/free/realloc) CPU overhead, even when the tracing feature is not used.
So it's best to keep it disabled unless tracing is being used.
config HEAP_TRACING_OFF
bool "Disabled"
config HEAP_TRACING_STANDALONE
bool "Standalone"
select HEAP_TRACING
config HEAP_TRACING_TOHOST
bool "Host-based"
select HEAP_TRACING
endchoice
config HEAP_TRACING
bool
default F
help
Enables/disables heap tracing API.
config HEAP_TRACING_STACK_DEPTH
int "Heap tracing stack depth"
range 0 0 if IDF_TARGET_ARCH_RISCV # Disabled for RISC-V due to `__builtin_return_address` limitation
default 0 if IDF_TARGET_ARCH_RISCV
range 0 32
default 2
depends on HEAP_TRACING
help
Number of stack frames to save when tracing heap operation callers.
More stack frames uses more memory in the heap trace buffer (and slows down allocation), but
can provide useful information.
config HEAP_USE_HOOKS
bool "Use allocation and free hooks"
help
Enable the user to implement function hooks triggered for each successful allocation and free.
config HEAP_TASK_TRACKING
bool "Enable heap task tracking"
depends on !HEAP_POISONING_DISABLED
help
Enables tracking the task responsible for each heap allocation.
This function depends on heap poisoning being enabled and adds four more bytes of overhead for each block
allocated.
config HEAP_TRACE_HASH_MAP
bool "Use hash map mechanism to access heap trace records"
depends on HEAP_TRACING_STANDALONE
default n
help
Enable this flag to use a hash map to increase performance in handling
heap trace records.
Keeping this as "n" in your project will save RAM and heap memory but will lower
the performance of the heap trace in adding, retrieving and removing trace records.
Making this as "y" in your project, you will decrease free RAM and heap memory but,
the heap trace performances in adding retrieving and removing trace records will be
enhanced.
config HEAP_TRACE_HASH_MAP_IN_EXT_RAM
bool "Place hash map in the bss section of the external RAM"
depends on HEAP_TRACE_HASH_MAP && SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
default n
help
When enabled this configuration forces the hash map to be placed in the bss section
of the external RAM.
Note that this functionality can only be enabled when CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
is enabled.
config HEAP_TRACE_HASH_MAP_SIZE
int "The number of entries in the hash map"
depends on HEAP_TRACE_HASH_MAP
default 10
help
Defines the number of entries in the heap trace hashmap. The bigger this number is,
the bigger the hash map will be in the memory. In case the tracing mode is set to
HEAP_TRACE_ALL, the bigger the hashmap is, the better the performances are.
config HEAP_ABORT_WHEN_ALLOCATION_FAILS
bool "Abort if memory allocation fails"
default n
help
When enabled, if a memory allocation operation fails it will cause a system abort.
config HEAP_TLSF_USE_ROM_IMPL
bool "Use ROM implementation of heap tlsf library"
depends on ESP_ROM_HAS_HEAP_TLSF
default y
help
Enable this flag to use heap functions from ROM instead of ESP-IDF.
If keeping this as "n" in your project, you will have less free IRAM.
If making this as "y" in your project, you will increase free IRAM,
but you will lose the possibility to debug this module, and some new
features will be added and bugs will be fixed in the IDF source
but cannot be synced to ROM.
config HEAP_PLACE_FUNCTION_INTO_FLASH
bool "Force the entire heap component to be placed in flash memory"
depends on !HEAP_TLSF_USE_ROM_IMPL
default n
help
Enable this flag to save up RAM space by placing the heap component in the flash memory
Note that it is only safe to enable this configuration if no functions from esp_heap_caps.h
or esp_heap_trace.h are called from ISR.
endmenu