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/*
* Logging!
*/
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#define PEAK_MAX_PRINTF 1024
#define PEAK_MAX_ALLOCS 512
typedef struct {
void *ptr;
size_t size;
const char *file;
const char *func;
int line;
} PeakDebugMemoryInfo;
static uint64_t peak_alloc_count = 0;
static PeakDebugMemoryInfo peak_ptr_array[PEAK_MAX_ALLOCS];
void
peak_log_printf(PeakLogLevel level, const char *src, ...)
{
char out[PEAK_MAX_PRINTF];
va_list ap;
int len;
size_t offset = P_PREFIX_LEN + 1;
if (level < 0 || level >= P_COUNT_LOG_LEVEL)
level = P_LOG_LEVEL_ERROR;
memcpy(out, p_prefix[level], P_PREFIX_LEN);
out[P_PREFIX_LEN] = ' ';
va_start(ap, src);
len = vsnprintf(out + offset, PEAK_MAX_PRINTF - offset, src, ap);
va_end(ap);
if (len < 0) len = 0;
if (offset + (size_t)len >= PEAK_MAX_PRINTF)
len = (int)(PEAK_MAX_PRINTF - offset - 1);
out[offset + (size_t)len] = '\n';
fwrite(out, 1, offset + (size_t)len + 1, (level <= P_LOG_LEVEL_ERROR) ? stderr : stdout);
}
void *
peak_debug_malloc_impl(size_t size, const char *file, int line, const char *func)
{
void *ptr = malloc(size);
printf("[ALLOC] %p (%zu bytes) -> %s:%d %s()\n", ptr, size, file, line, func);
if (ptr) {
if (peak_alloc_count < PEAK_MAX_ALLOCS) {
peak_ptr_array[peak_alloc_count++] = (PeakDebugMemoryInfo){
.ptr = ptr,
.size = size,
.file = file,
.func = func,
.line = line
};
} else {
fprintf(stderr, "[ERROR] Debug allocator tracking capacity (%d) exceeded!\n", PEAK_MAX_ALLOCS);
}
}
return ptr;
}
void
peak_debug_free_impl(void *ptr, const char *file, int line, const char *func)
{
printf("[FREE] %p -> %s:%d %s()\n", ptr, file, line, func);
if (!ptr) return;
bool found = false;
uint64_t index = 0;
for (index = 0; index < peak_alloc_count; ++index) {
if (peak_ptr_array[index].ptr == ptr) {
found = true;
break;
}
}
if (found) {
for (uint64_t j = index; j < peak_alloc_count - 1; ++j) {
peak_ptr_array[j] = peak_ptr_array[j + 1];
}
peak_alloc_count--;
} else {
fprintf(stderr, "[WARNING] Attempted to free untracked/double-freed pointer %p at %s:%d %s()\n",
ptr, file, line, func);
}
free(ptr);
}
void *
peak_debug_realloc_impl(void *ptr, size_t size, const char *file, int line, const char *func)
{
if (!ptr) {
return peak_debug_malloc_impl(size, file, line, func);
}
if (size == 0) {
peak_debug_free_impl(ptr, file, line, func);
return NULL;
}
uintptr_t old_addr = (uintptr_t)ptr;
void *new_ptr = realloc(ptr, size);
printf("[REALLOC] %p -> %p (%zu bytes) -> %s:%d %s()\n", (void *)old_addr, new_ptr, size, file, line, func);
if (new_ptr) {
bool found = false;
for (uint64_t i = 0; i < peak_alloc_count; ++i) {
if (peak_ptr_array[i].ptr == (void *)old_addr) {
peak_ptr_array[i].ptr = new_ptr;
peak_ptr_array[i].size = size;
peak_ptr_array[i].file = file;
peak_ptr_array[i].line = line;
peak_ptr_array[i].func = func;
found = true;
break;
}
}
if (!found) {
if (peak_alloc_count < PEAK_MAX_ALLOCS) {
peak_ptr_array[peak_alloc_count++] = (PeakDebugMemoryInfo){
.ptr = new_ptr,
.size = size,
.file = file,
.func = func,
.line = line
};
}
}
}
return new_ptr;
}
void
peak_debug_memory_report(void)
{
printf("\n==================== MEMORY REPORT ====================\n");
printf("Remaining unfreed allocations: %lu\n", (unsigned long)peak_alloc_count);
for (uint64_t i = 0; i < peak_alloc_count; ++i) {
PeakDebugMemoryInfo *info = &peak_ptr_array[i];
printf("[LEAK] %p (%zu bytes) allocated at %s:%d in %s()\n",
info->ptr, info->size, info->file, info->line, info->func);
}
printf("=======================================================\n");
}
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