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feat: add data-kind to TracingObject to enable quasi-polymorphism

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vegowotenks 2025-01-12 15:50:17 +01:00
parent 7120f59951
commit 3d6f7a2957
2 changed files with 49 additions and 16 deletions
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33
src/TracingHeap/TracingHeap.h
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@ -5,6 +5,7 @@
#include <stdalign.h>
#include <stdbool.h>
#include <stdint.h>
enum TracingColor {
TRACINGCOLOR_BLACK,
@ -12,29 +13,43 @@ enum TracingColor {
TRACINGCOLOR_WHITE,
};
union TracingObjectDataAlignment {
double d;
void* p;
};
typedef struct TracingObject {
// color linked list members
struct TracingObject* color_next;
struct TracingObject* color_prev;
enum TracingColor color;
// Selector for the callback function
// TODO: Think about something for 16-bit systems
#define TRACINGHEAPDATAKIND_MAX (((uint64_t) 1 << 62) - 1)
uint64_t data_kind: 62;
// color of this object
enum TracingColor color: 2;
// data member of the requested size
alignas(void*) char data[];
alignas(union TracingObjectDataAlignment) char data[];
} TracingObject;
typedef int (*TracingHeapVisit) (void* context, void* reference);
typedef int (*TracingHeapTraceData) (void* context, void* data, TracingHeapVisit trace_callback, void* callback_context);
typedef int (*TracingHeapDataDestructor) (void* context, void* data);
typedef size_t (*TracingHeapSizeQuery) (void* context, void* data);
typedef struct TracingHeapConfig_s {
TracingHeapTraceData trace_data;
void* trace_context;
TracingHeapTraceData* trace_data;
void** trace_context;
TracingHeapDataDestructor destructor;
void* destructor_context;
TracingHeapDataDestructor* destructor;
void** destructor_context;
TracingHeapSizeQuery size_query;
void* size_query_context;
TracingHeapSizeQuery* size_query;
void** size_query_context;
} TracingHeapConfig;
typedef struct TracingHeap_s {
@ -52,7 +67,7 @@ typedef struct TracingHeap_s {
int TracingHeap_Create(TracingHeap* self, allocator_t* allocator);
void TracingHeap_Destroy(TracingHeap* self);
void* TracingHeap_Allocate(TracingHeap* self, size_t bytes);
void* TracingHeap_Allocate(TracingHeap* self, size_t bytes, uint64_t object_kind);
int TracingHeap_BeginTrace(TracingHeap* self);
bool TracingHeap_IsTraceFinished(TracingHeap* self);