esp-idf/components/heap/test/test_malloc.c

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/*
Generic test for malloc/free
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*/
#include <esp_types.h>
#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "freertos/queue.h"
#include "freertos/xtensa_api.h"
#include "unity.h"
#include "esp_heap_caps.h"
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#include "sdkconfig.h"
static int **allocatedMem;
static int noAllocated;
static int tryAllocMem(void) {
int i, j;
const int allocateMaxK=1024*5; //try to allocate a max of 5MiB
allocatedMem=malloc(sizeof(int *)*allocateMaxK);
if (!allocatedMem) return 0;
for (i=0; i<allocateMaxK; i++) {
allocatedMem[i]=malloc(1024);
if (allocatedMem[i]==NULL) break;
for (j=0; j<1024/4; j++) allocatedMem[i][j]=(0xdeadbeef);
}
noAllocated=i;
return i;
}
static void tryAllocMemFree(void) {
int i, j;
for (i=0; i<noAllocated; i++) {
for (j=0; j<1024/4; j++) {
TEST_ASSERT(allocatedMem[i][j]==(0xdeadbeef));
}
free(allocatedMem[i]);
}
free(allocatedMem);
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}
TEST_CASE("Malloc/overwrite, then free all available DRAM", "[heap]")
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{
int m1=0, m2=0;
m1=tryAllocMem();
tryAllocMemFree();
m2=tryAllocMem();
tryAllocMemFree();
printf("Could allocate %dK on first try, %dK on 2nd try.\n", m1, m2);
TEST_ASSERT(m1==m2);
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}
#if CONFIG_SPIRAM_USE_MALLOC
#if (CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL > 1024)
TEST_CASE("Check if reserved DMA pool still can allocate even when malloc()'ed memory is exhausted", "[heap]")
{
char** dmaMem=malloc(sizeof(char*)*512);
assert(dmaMem);
int m=tryAllocMem();
int i=0;
for (i=0; i<512; i++) {
dmaMem[i]=heap_caps_malloc(1024, MALLOC_CAP_DMA);
if (dmaMem[i]==NULL) break;
}
for (int j=0; j<i; j++) free(dmaMem[j]);
free(dmaMem);
tryAllocMemFree();
printf("Could allocate %dK of DMA memory after allocating all of %dK of normal memory.\n", i, m);
TEST_ASSERT(i);
}
#endif
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#endif
/* As you see, we are desperately trying to outsmart the compiler, so that it
* doesn't warn about oversized allocations in the next two unit tests.
* To be removed when we switch to GCC 8.2 and add
* -Wno-alloc-size-larger-than=PTRDIFF_MAX to CFLAGS for this file.
*/
void* (*g_test_malloc_ptr)(size_t) = &malloc;
void* (*g_test_calloc_ptr)(size_t, size_t) = &calloc;
void* test_malloc_wrapper(size_t size)
{
return (*g_test_malloc_ptr)(size);
}
void* test_calloc_wrapper(size_t count, size_t size)
{
return (*g_test_calloc_ptr)(count, size);
}
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TEST_CASE("alloc overflows should all fail", "[heap]")
{
/* allocates 8 bytes if size_t overflows */
TEST_ASSERT_NULL(test_calloc_wrapper(SIZE_MAX / 2 + 4, 2));
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/* will overflow if any poisoning is enabled
(should fail for sensible OOM reasons, otherwise) */
TEST_ASSERT_NULL(test_malloc_wrapper(SIZE_MAX - 1));
TEST_ASSERT_NULL(test_calloc_wrapper(SIZE_MAX - 1, 1));
/* will overflow when the size is rounded up to word align it */
TEST_ASSERT_NULL(heap_caps_malloc(SIZE_MAX-1, MALLOC_CAP_32BIT));
TEST_ASSERT_NULL(heap_caps_malloc(SIZE_MAX-1, MALLOC_CAP_EXEC));
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}
TEST_CASE("unreasonable allocs should all fail", "[heap]")
{
TEST_ASSERT_NULL(test_calloc_wrapper(16, 1024*1024));
TEST_ASSERT_NULL(test_malloc_wrapper(16*1024*1024));
TEST_ASSERT_NULL(test_malloc_wrapper(SIZE_MAX / 2));
TEST_ASSERT_NULL(test_malloc_wrapper(SIZE_MAX - 256));
TEST_ASSERT_NULL(test_malloc_wrapper(xPortGetFreeHeapSize() - 1));
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}