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/* Memory Debugging */
#ifdef DWC_DEBUG_MEMORY
#include "dwc_os.h"
#include "dwc_list.h"
struct allocation {
void *addr;
void *ctx;
char *func;
int line;
uint32_t size;
int dma;
DWC_CIRCLEQ_ENTRY(allocation) entry;
};
DWC_CIRCLEQ_HEAD(allocation_queue, allocation);
struct allocation_manager {
void *mem_ctx;
struct allocation_queue allocations;
/* statistics */
int num;
int num_freed;
int num_active;
uint32_t total;
uint32_t cur;
uint32_t max;
};
static struct allocation_manager *manager = NULL;
static int add_allocation(void *ctx, uint32_t size, char const *func, int line, void *addr,
int dma)
{
struct allocation *a;
DWC_ASSERT(manager != NULL, "manager not allocated");
a = __DWC_ALLOC_ATOMIC(manager->mem_ctx, sizeof(*a));
if (!a) {
return -DWC_E_NO_MEMORY;
}
a->func = __DWC_ALLOC_ATOMIC(manager->mem_ctx, DWC_STRLEN(func) + 1);
if (!a->func) {
__DWC_FREE(manager->mem_ctx, a);
return -DWC_E_NO_MEMORY;
}
DWC_MEMCPY(a->func, func, DWC_STRLEN(func) + 1);
a->addr = addr;
a->ctx = ctx;
a->line = line;
a->size = size;
a->dma = dma;
DWC_CIRCLEQ_INSERT_TAIL(&manager->allocations, a, entry);
/* Update stats */
manager->num++;
manager->num_active++;
manager->total += size;
manager->cur += size;
if (manager->max < manager->cur) {
manager->max = manager->cur;
}
return 0;
}
static struct allocation *find_allocation(void *ctx, void *addr)
{
struct allocation *a;
DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
if (a->ctx == ctx && a->addr == addr) {
return a;
}
}
return NULL;
}
static void free_allocation(void *ctx, void *addr, char const *func, int line)
{
struct allocation *a = find_allocation(ctx, addr);
if (!a) {
DWC_ASSERT(0,
"Free of address %p that was never allocated or already freed %s:%d",
addr, func, line);
return;
}
DWC_CIRCLEQ_REMOVE(&manager->allocations, a, entry);
manager->num_active--;
manager->num_freed++;
manager->cur -= a->size;
__DWC_FREE(manager->mem_ctx, a->func);
__DWC_FREE(manager->mem_ctx, a);
}
int dwc_memory_debug_start(void *mem_ctx)
{
DWC_ASSERT(manager == NULL, "Memory debugging has already started\n");
if (manager) {
return -DWC_E_BUSY;
}
manager = __DWC_ALLOC(mem_ctx, sizeof(*manager));
if (!manager) {
return -DWC_E_NO_MEMORY;
}
DWC_CIRCLEQ_INIT(&manager->allocations);
manager->mem_ctx = mem_ctx;
manager->num = 0;
manager->num_freed = 0;
manager->num_active = 0;
manager->total = 0;
manager->cur = 0;
manager->max = 0;
return 0;
}
void dwc_memory_debug_stop(void)
{
struct allocation *a;
dwc_memory_debug_report();
DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
DWC_ERROR("Memory leaked from %s:%d\n", a->func, a->line);
free_allocation(a->ctx, a->addr, NULL, -1);
}
__DWC_FREE(manager->mem_ctx, manager);
}
void dwc_memory_debug_report(void)
{
struct allocation *a;
DWC_PRINTF("\n\n\n----------------- Memory Debugging Report -----------------\n\n");
DWC_PRINTF("Num Allocations = %d\n", manager->num);
DWC_PRINTF("Freed = %d\n", manager->num_freed);
DWC_PRINTF("Active = %d\n", manager->num_active);
DWC_PRINTF("Current Memory Used = %d\n", manager->cur);
DWC_PRINTF("Total Memory Used = %d\n", manager->total);
DWC_PRINTF("Maximum Memory Used at Once = %d\n", manager->max);
DWC_PRINTF("Unfreed allocations:\n");
DWC_CIRCLEQ_FOREACH(a, &manager->allocations, entry) {
DWC_PRINTF(" addr=%p, size=%d from %s:%d, DMA=%d\n",
a->addr, a->size, a->func, a->line, a->dma);
}
}
/* The replacement functions */
void *dwc_alloc_debug(void *mem_ctx, uint32_t size, char const *func, int line)
{
void *addr = __DWC_ALLOC(mem_ctx, size);
if (!addr) {
return NULL;
}
if (add_allocation(mem_ctx, size, func, line, addr, 0)) {
__DWC_FREE(mem_ctx, addr);
return NULL;
}
return addr;
}
void *dwc_alloc_atomic_debug(void *mem_ctx, uint32_t size, char const *func,
int line)
{
void *addr = __DWC_ALLOC_ATOMIC(mem_ctx, size);
if (!addr) {
return NULL;
}
if (add_allocation(mem_ctx, size, func, line, addr, 0)) {
__DWC_FREE(mem_ctx, addr);
return NULL;
}
return addr;
}
void dwc_free_debug(void *mem_ctx, void *addr, char const *func, int line)
{
free_allocation(mem_ctx, addr, func, line);
__DWC_FREE(mem_ctx, addr);
}
void *dwc_dma_alloc_debug(void *dma_ctx, uint32_t size, dwc_dma_t *dma_addr,
char const *func, int line)
{
void *addr = __DWC_DMA_ALLOC(dma_ctx, size, dma_addr);
if (!addr) {
return NULL;
}
if (add_allocation(dma_ctx, size, func, line, addr, 1)) {
__DWC_DMA_FREE(dma_ctx, size, addr, *dma_addr);
return NULL;
}
return addr;
}
void *dwc_dma_alloc_atomic_debug(void *dma_ctx, uint32_t size,
dwc_dma_t *dma_addr, char const *func, int line)
{
void *addr = __DWC_DMA_ALLOC_ATOMIC(dma_ctx, size, dma_addr);
if (!addr) {
return NULL;
}
if (add_allocation(dma_ctx, size, func, line, addr, 1)) {
__DWC_DMA_FREE(dma_ctx, size, addr, *dma_addr);
return NULL;
}
return addr;
}
void dwc_dma_free_debug(void *dma_ctx, uint32_t size, void *virt_addr,
dwc_dma_t dma_addr, char const *func, int line)
{
free_allocation(dma_ctx, virt_addr, func, line);
__DWC_DMA_FREE(dma_ctx, size, virt_addr, dma_addr);
}
#endif /* DWC_DEBUG_MEMORY */
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