diff options
Diffstat (limited to 'supervisor/shared/memory.c')
| -rwxr-xr-x | supervisor/shared/memory.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/supervisor/shared/memory.c b/supervisor/shared/memory.c index acace7f89..bc82804b7 100755 --- a/supervisor/shared/memory.c +++ b/supervisor/shared/memory.c @@ -33,7 +33,7 @@ #include "supervisor/shared/display.h" enum { - CIRCUITPY_SUPERVISOR_ALLOC_COUNT = + CIRCUITPY_SUPERVISOR_IMMOVABLE_ALLOC_COUNT = // stack + heap 2 #ifdef EXTERNAL_FLASH_DEVICES @@ -42,6 +42,9 @@ enum { #if CIRCUITPY_USB_MIDI + 1 #endif + , + CIRCUITPY_SUPERVISOR_MOVABLE_ALLOC_COUNT = + 0 #if CIRCUITPY_DISPLAYIO #if CIRCUITPY_TERMINALIO + 1 @@ -57,6 +60,8 @@ enum { #endif ) #endif + , + CIRCUITPY_SUPERVISOR_ALLOC_COUNT = CIRCUITPY_SUPERVISOR_IMMOVABLE_ALLOC_COUNT + CIRCUITPY_SUPERVISOR_MOVABLE_ALLOC_COUNT }; // The lowest two bits of a valid length are always zero, so we can use them to mark an allocation @@ -147,6 +152,9 @@ static supervisor_allocation_node* find_hole(supervisor_allocation_node* node, s } static supervisor_allocation_node* allocate_memory_node(uint32_t length, bool high, bool movable) { + if (CIRCUITPY_SUPERVISOR_MOVABLE_ALLOC_COUNT == 0) { + assert(!movable); + } // supervisor_move_memory() currently does not support movable allocations on the high side, it // must be extended first if this is ever needed. assert(!(high && movable)); @@ -223,6 +231,11 @@ size_t get_allocation_length(supervisor_allocation* allocation) { } void supervisor_move_memory(void) { + // This whole function is not needed when there are no movable allocations, let it be optimized + // out. + if (CIRCUITPY_SUPERVISOR_MOVABLE_ALLOC_COUNT == 0) { + return; + } // This must be called exactly after freeing the heap, so that the embedded allocations, if any, // are now in the free region. assert(MP_STATE_VM(first_embedded_allocation) == NULL || (low_head < MP_STATE_VM(first_embedded_allocation) && MP_STATE_VM(first_embedded_allocation) < high_head)); |