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248 lines
9.1 KiB
C
248 lines
9.1 KiB
C
/*
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Tests for the capabilities-based memory allocator.
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*/
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#include <esp_types.h>
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#include <stdio.h>
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#include "unity.h"
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#include "esp_attr.h"
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#include "esp_heap_caps.h"
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#include "esp_spi_flash.h"
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#include <stdlib.h>
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#include <sys/param.h>
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#ifndef CONFIG_ESP32S2_MEMPROT_FEATURE
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TEST_CASE("Capabilities allocator test", "[heap]")
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{
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char *m1, *m2[10];
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int x;
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size_t free8start, free32start, free8, free32;
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/* It's important we printf() something before we take the empty heap sizes,
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as the first printf() in a task allocates heap resources... */
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printf("Testing capabilities allocator...\n");
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free8start = heap_caps_get_free_size(MALLOC_CAP_8BIT);
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free32start = heap_caps_get_free_size(MALLOC_CAP_32BIT);
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printf("Free 8bit-capable memory (start): %dK, 32-bit capable memory %dK\n", free8start, free32start);
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TEST_ASSERT(free32start >= free8start);
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printf("Allocating 10K of 8-bit capable RAM\n");
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m1= heap_caps_malloc(10*1024, MALLOC_CAP_8BIT);
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printf("--> %p\n", m1);
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free8 = heap_caps_get_free_size(MALLOC_CAP_8BIT);
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free32 = heap_caps_get_free_size(MALLOC_CAP_32BIT);
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printf("Free 8bit-capable memory (both reduced): %dK, 32-bit capable memory %dK\n", free8, free32);
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//Both should have gone down by 10K; 8bit capable ram is also 32-bit capable
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TEST_ASSERT(free8<=(free8start-10*1024));
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TEST_ASSERT(free32<=(free32start-10*1024));
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//Assume we got DRAM back
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TEST_ASSERT((((int)m1)&0xFF000000)==0x3F000000);
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free(m1);
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//The goal here is to allocate from IRAM. Since there is no external IRAM (yet)
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//the following gives size of IRAM-only (not D/IRAM) memory.
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size_t free_iram = heap_caps_get_free_size(MALLOC_CAP_INTERNAL) -
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heap_caps_get_free_size(MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL);
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size_t alloc32 = MIN(free_iram / 2, 10*1024) & (~3);
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if(free_iram) {
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printf("Freeing; allocating %u bytes of 32K-capable RAM\n", alloc32);
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m1 = heap_caps_malloc(alloc32, MALLOC_CAP_32BIT);
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printf("--> %p\n", m1);
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//Check that we got IRAM back
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TEST_ASSERT((((int)m1)&0xFF000000)==0x40000000);
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free8 = heap_caps_get_free_size(MALLOC_CAP_8BIT);
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free32 = heap_caps_get_free_size(MALLOC_CAP_32BIT);
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printf("Free 8bit-capable memory (after 32-bit): %dK, 32-bit capable memory %dK\n", free8, free32);
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//Only 32-bit should have gone down by alloc32: 32-bit isn't necessarily 8bit capable
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TEST_ASSERT(free32<=(free32start-alloc32));
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TEST_ASSERT(free8==free8start);
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free(m1);
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} else {
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printf("This platform has no 32-bit only capable RAM, jumping to next test \n");
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}
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printf("Allocating impossible caps\n");
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m1= heap_caps_malloc(10*1024, MALLOC_CAP_8BIT|MALLOC_CAP_EXEC);
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printf("--> %p\n", m1);
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TEST_ASSERT(m1==NULL);
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if(free_iram) {
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printf("Testing changeover iram -> dram");
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// priorities will exhaust IRAM first, then start allocating from DRAM
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for (x=0; x<10; x++) {
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m2[x]= heap_caps_malloc(alloc32, MALLOC_CAP_32BIT);
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printf("--> %p\n", m2[x]);
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}
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TEST_ASSERT((((int)m2[0])&0xFF000000)==0x40000000);
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TEST_ASSERT((((int)m2[9])&0xFF000000)==0x3F000000);
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} else {
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printf("This platform has no IRAM-only so changeover will never occur, jumping to next test\n");
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}
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printf("Test if allocating executable code still gives IRAM, even with dedicated IRAM region depleted\n");
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if(free_iram) {
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// (the allocation should come from D/IRAM)
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free_iram = heap_caps_get_free_size(MALLOC_CAP_EXEC);
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m1= heap_caps_malloc(MIN(free_iram / 2, 10*1024), MALLOC_CAP_EXEC);
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printf("--> %p\n", m1);
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TEST_ASSERT((((int)m1)&0xFF000000)==0x40000000);
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for (x=0; x<10; x++) free(m2[x]);
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} else {
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// (the allocation should come from D/IRAM)
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free_iram = heap_caps_get_free_size(MALLOC_CAP_EXEC);
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m1= heap_caps_malloc(MIN(free_iram / 2, 10*1024), MALLOC_CAP_EXEC);
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printf("--> %p\n", m1);
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TEST_ASSERT((((int)m1)&0xFF000000)==0x40000000);
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}
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free(m1);
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printf("Done.\n");
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}
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#endif
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#ifdef CONFIG_ESP32_IRAM_AS_8BIT_ACCESSIBLE_MEMORY
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TEST_CASE("IRAM_8BIT capability test", "[heap]")
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{
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uint8_t *ptr;
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size_t free_size, free_size32, largest_free_size;
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/* need to print something as first printf allocates some heap */
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printf("IRAM_8BIT capability test\n");
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free_size = heap_caps_get_free_size(MALLOC_CAP_IRAM_8BIT);
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free_size32 = heap_caps_get_free_size(MALLOC_CAP_32BIT);
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largest_free_size = heap_caps_get_largest_free_block(MALLOC_CAP_IRAM_8BIT);
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ptr = heap_caps_malloc(largest_free_size, MALLOC_CAP_IRAM_8BIT);
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TEST_ASSERT((((int)ptr)&0xFF000000)==0x40000000);
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TEST_ASSERT(heap_caps_get_free_size(MALLOC_CAP_IRAM_8BIT) == (free_size - heap_caps_get_allocated_size(ptr)));
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TEST_ASSERT(heap_caps_get_free_size(MALLOC_CAP_32BIT) == (free_size32 - heap_caps_get_allocated_size(ptr)));
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free(ptr);
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}
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#endif
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TEST_CASE("heap_caps metadata test", "[heap]")
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{
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/* need to print something as first printf allocates some heap */
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printf("heap_caps metadata test\n");
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heap_caps_print_heap_info(MALLOC_CAP_8BIT);
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multi_heap_info_t original;
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heap_caps_get_info(&original, MALLOC_CAP_8BIT);
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void *b = heap_caps_malloc(original.largest_free_block, MALLOC_CAP_8BIT);
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TEST_ASSERT_NOT_NULL(b);
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printf("After allocating %d bytes:\n", original.largest_free_block);
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heap_caps_print_heap_info(MALLOC_CAP_8BIT);
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multi_heap_info_t after;
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heap_caps_get_info(&after, MALLOC_CAP_8BIT);
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TEST_ASSERT(after.largest_free_block <= original.largest_free_block);
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TEST_ASSERT(after.total_free_bytes <= original.total_free_bytes);
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free(b);
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heap_caps_get_info(&after, MALLOC_CAP_8BIT);
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printf("\n\n After test, heap status:\n");
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heap_caps_print_heap_info(MALLOC_CAP_8BIT);
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/* Allow some leeway here, because LWIP sometimes allocates up to 144 bytes in the background
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as part of timer management.
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*/
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TEST_ASSERT_INT32_WITHIN(200, after.total_free_bytes, original.total_free_bytes);
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TEST_ASSERT_INT32_WITHIN(200, after.largest_free_block, original.largest_free_block);
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TEST_ASSERT(after.minimum_free_bytes < original.total_free_bytes);
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}
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/* Small function runs from IRAM to check that malloc/free/realloc
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all work OK when cache is disabled...
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*/
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static IRAM_ATTR __attribute__((noinline)) bool iram_malloc_test(void)
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{
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spi_flash_guard_get()->start(); // Disables flash cache
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bool result = true;
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void *x = heap_caps_malloc(64, MALLOC_CAP_EXEC);
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result = result && (x != NULL);
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void *y = heap_caps_realloc(x, 32, MALLOC_CAP_EXEC);
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result = result && (y != NULL);
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heap_caps_free(y);
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spi_flash_guard_get()->end(); // Re-enables flash cache
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return result;
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}
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TEST_CASE("heap_caps_xxx functions work with flash cache disabled", "[heap]")
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{
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TEST_ASSERT( iram_malloc_test() );
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}
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#ifdef CONFIG_HEAP_ABORT_WHEN_ALLOCATION_FAILS
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TEST_CASE("When enabled, allocation operation failure generates an abort", "[heap][reset=abort,SW_CPU_RESET]")
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{
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const size_t stupid_allocation_size = (128 * 1024 * 1024);
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void *ptr = heap_caps_malloc(stupid_allocation_size, MALLOC_CAP_DEFAULT);
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(void)ptr;
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TEST_FAIL_MESSAGE("should not be reached");
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}
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#endif
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static bool called_user_failed_hook = false;
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void heap_caps_alloc_failed_hook(size_t requested_size, uint32_t caps, const char *function_name)
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{
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printf("%s was called but failed to allocate %d bytes with 0x%X capabilities. \n",function_name, requested_size, caps);
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called_user_failed_hook = true;
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}
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TEST_CASE("user provided alloc failed hook must be called when allocation fails", "[heap]")
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{
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TEST_ASSERT(heap_caps_register_failed_alloc_callback(heap_caps_alloc_failed_hook) == ESP_OK);
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const size_t stupid_allocation_size = (128 * 1024 * 1024);
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void *ptr = heap_caps_malloc(stupid_allocation_size, MALLOC_CAP_DEFAULT);
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TEST_ASSERT(called_user_failed_hook != false);
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called_user_failed_hook = false;
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ptr = heap_caps_realloc(ptr, stupid_allocation_size, MALLOC_CAP_DEFAULT);
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TEST_ASSERT(called_user_failed_hook != false);
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called_user_failed_hook = false;
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ptr = heap_caps_aligned_alloc(0x200, stupid_allocation_size, MALLOC_CAP_DEFAULT);
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TEST_ASSERT(called_user_failed_hook != false);
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(void)ptr;
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}
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TEST_CASE("allocation with invalid capability should also trigger the alloc failed hook", "[heap]")
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{
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const size_t allocation_size = 64;
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const uint32_t invalid_cap = MALLOC_CAP_INVALID;
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TEST_ASSERT(heap_caps_register_failed_alloc_callback(heap_caps_alloc_failed_hook) == ESP_OK);
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called_user_failed_hook = false;
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void *ptr = heap_caps_malloc(allocation_size, invalid_cap);
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TEST_ASSERT(called_user_failed_hook != false);
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called_user_failed_hook = false;
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ptr = heap_caps_realloc(ptr, allocation_size, invalid_cap);
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TEST_ASSERT(called_user_failed_hook != false);
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called_user_failed_hook = false;
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ptr = heap_caps_aligned_alloc(0x200, allocation_size, invalid_cap);
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TEST_ASSERT(called_user_failed_hook != false);
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(void)ptr;
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}
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