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LibC: Add option to debug userspace malloc family calls

This commit is contained in:
Bananymous 2024-11-10 14:03:25 +02:00
parent 6bd51ac345
commit 7542e55cb2
1 changed files with 12 additions and 0 deletions
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12
userspace/libraries/LibC/malloc.cpp
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@ -1,3 +1,5 @@
#include <BAN/Debug.h>
#include <assert.h> #include <assert.h>
#include <errno.h> #include <errno.h>
#include <stdlib.h> #include <stdlib.h>
@ -6,6 +8,8 @@
#include <sys/syscall.h> #include <sys/syscall.h>
#include <unistd.h> #include <unistd.h>
#define DEBUG_MALLOC 0
static consteval size_t log_size_t(size_t value, size_t base) static consteval size_t log_size_t(size_t value, size_t base)
{ {
size_t result = 0; size_t result = 0;
@ -174,6 +178,8 @@ static malloc_pool_t& pool_from_node(malloc_node_t* node)
void* malloc(size_t size) void* malloc(size_t size)
{ {
dprintln_if(DEBUG_MALLOC, "malloc({})", size);
// align size to s_malloc_default_align boundary // align size to s_malloc_default_align boundary
if (size_t ret = size % s_malloc_default_align) if (size_t ret = size % s_malloc_default_align)
size += s_malloc_default_align - ret; size += s_malloc_default_align - ret;
@ -207,6 +213,8 @@ void* malloc(size_t size)
void* realloc(void* ptr, size_t size) void* realloc(void* ptr, size_t size)
{ {
dprintln_if(DEBUG_MALLOC, "realloc({}, {})", ptr, size);
if (ptr == nullptr) if (ptr == nullptr)
return malloc(size); return malloc(size);
@ -237,6 +245,8 @@ void* realloc(void* ptr, size_t size)
void free(void* ptr) void free(void* ptr)
{ {
dprintln_if(DEBUG_MALLOC, "free({})", ptr);
if (ptr == nullptr) if (ptr == nullptr)
return; return;
@ -265,6 +275,8 @@ void free(void* ptr)
void* calloc(size_t nmemb, size_t size) void* calloc(size_t nmemb, size_t size)
{ {
dprintln_if(DEBUG_MALLOC, "calloc({}, {})", nmemb, size);
size_t total = nmemb * size; size_t total = nmemb * size;
if (size != 0 && total / size != nmemb) if (size != 0 && total / size != nmemb)
{ {