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85c1bd4836
- Suppress GenericThreadModule warning when DEBUG_MUTE - Suppress warning stemming from check_skip_packages - Cast pointers to uint32_t before subtracting to avoid cppcheck warning
113 lines
3.2 KiB
C++
113 lines
3.2 KiB
C++
/**
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* @file memGet.cpp
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* @brief Implementation of MemGet class that provides functions to get memory information.
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*
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* This file contains the implementation of MemGet class that provides functions to get
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* information about free heap, heap size, free psram and psram size. The functions are
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* implemented for ESP32 and NRF52 architectures. If the platform does not have heap
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* management function implemented, the functions return UINT32_MAX or 0.
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*/
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#include "memGet.h"
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#include "configuration.h"
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#if defined(MESHTASTIC_DYNAMIC_SBRK_HEAP)
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#include <malloc.h>
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#include <unistd.h> // sbrk
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#if defined(ARCH_STM32)
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// Returns the uncommitted sbrk headroom: addressable space between the current heap
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// break and the stack pointer that has not yet been committed to the arena.
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static uint32_t sbrkHeadroom()
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{
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// defined in STM32 linker script
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extern char _estack;
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extern char _Min_Stack_Size;
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// Both are linker-script symbols rather than real objects: _estack is the top-of-RAM address and
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// _Min_Stack_Size is a plain value. Convert each to an integer before subtracting - differencing the
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// pointers themselves is pointer arithmetic across unrelated objects.
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uint32_t max_sp = (uint32_t)&_estack - (uint32_t)&_Min_Stack_Size;
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uint32_t heap_end = (uint32_t)sbrk(0);
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return (max_sp > heap_end) ? (max_sp - heap_end) : 0;
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}
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#else
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#error Unsupported architecture!
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#endif
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#endif
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MemGet memGet;
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/**
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* Returns the amount of free heap memory in bytes.
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* @return uint32_t The amount of free heap memory in bytes.
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*/
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uint32_t MemGet::getFreeHeap()
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{
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#ifdef ARCH_ESP32
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return ESP.getFreeHeap();
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#elif defined(ARCH_NRF52)
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return dbgHeapFree();
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#elif defined(ARCH_RP2040)
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return rp2040.getFreeHeap();
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#elif defined(MESHTASTIC_DYNAMIC_SBRK_HEAP) // Currently: ARCH_STM32WL
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struct mallinfo m = mallinfo();
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return m.fordblks + sbrkHeadroom(); // Free space within arena + uncommitted sbrk headroom
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#else
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// this platform does not have heap management function implemented
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return UINT32_MAX;
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#endif
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}
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/**
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* Returns the size of the heap memory in bytes.
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* @return uint32_t The size of the heap memory in bytes.
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*/
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uint32_t MemGet::getHeapSize()
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{
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#ifdef ARCH_ESP32
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return ESP.getHeapSize();
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#elif defined(ARCH_NRF52)
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return dbgHeapTotal();
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#elif defined(ARCH_RP2040)
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return rp2040.getTotalHeap();
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#elif defined(MESHTASTIC_DYNAMIC_SBRK_HEAP) // Currently: ARCH_STM32WL
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struct mallinfo m = mallinfo();
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return m.arena + sbrkHeadroom(); // Non-mmapped space allocated + uncommitted sbrk headroom
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#else
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// this platform does not have heap management function implemented
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return UINT32_MAX;
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#endif
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}
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/**
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* Returns the amount of free psram memory in bytes.
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*
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* @return The amount of free psram memory in bytes.
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*/
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uint32_t MemGet::getFreePsram()
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{
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#ifdef ARCH_ESP32
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return ESP.getFreePsram();
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#elif defined(ARCH_PORTDUINO)
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return 4194252;
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#else
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return 0;
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#endif
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}
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/**
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* @brief Returns the size of the PSRAM memory.
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*
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* @return uint32_t The size of the PSRAM memory.
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*/
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uint32_t MemGet::getPsramSize()
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{
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#ifdef ARCH_ESP32
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return ESP.getPsramSize();
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#elif defined(ARCH_PORTDUINO)
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return 4194252;
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#else
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return 0;
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#endif
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}
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