diff --git a/src/GC/include/event.hpp b/src/GC/include/event.hpp
new file mode 100644
index 0000000..cee4ded
--- /dev/null
+++ b/src/GC/include/event.hpp
@@ -0,0 +1,48 @@
+#pragma once
+
+#include <chrono>
+#include <iostream>
+#include <list>
+
+#include "chunk.hpp"
+
+using namespace std;
+
+namespace GC {
+
+    enum GCEventType {
+        CollectStart,
+        MarkStart,
+        ChunkMarked,
+        ChunkSwept,
+        ChunkFreed
+    };
+
+    using TimeStamp = chrono::_V2::system_clock::time_point;
+
+    class GCEvent {
+    private:
+        // make const
+        GCEventType m_type;
+        TimeStamp m_timestamp;
+        Chunk *m_chunk;
+    public:
+        GCEvent(GCEventType type) {
+            m_type = type;
+            m_timestamp = chrono::system_clock::now();
+        }
+
+        GCEvent(GCEventType type, Chunk *chunk) {
+            m_type = type;
+            m_timestamp = chrono::system_clock::now();
+            m_chunk = chunk;
+        }
+
+        GCEventType getType();
+        TimeStamp getTimeStamp();
+        Chunk *getChunk();
+
+        void printShort();
+        void printFull();
+    };
+}
\ No newline at end of file
diff --git a/src/GC/include/heap.hpp b/src/GC/include/heap.hpp
index bfa167d..fc6cc9c 100644
--- a/src/GC/include/heap.hpp
+++ b/src/GC/include/heap.hpp
@@ -35,14 +35,14 @@ namespace GC {
       std::free((char *)m_heap);
     }
 
-    static inline Heap *the() { // TODO: make private
+    inline static Heap *the() { // TODO: make private
       if (m_instance) // if m_instance is not a nullptr
         return m_instance;
       m_instance = new Heap();
       return m_instance;
     }
 
-    static inline Chunk *getAt(std::vector<Chunk *> list, size_t n) {
+    inline static Chunk *getAt(std::vector<Chunk *> list, size_t n) {
       auto iter = list.begin();
       if (!n)
         return *iter;
diff --git a/src/GC/lib/event.cpp b/src/GC/lib/event.cpp
new file mode 100644
index 0000000..2936a27
--- /dev/null
+++ b/src/GC/lib/event.cpp
@@ -0,0 +1,32 @@
+#include <chrono>
+#include <iostream>
+#include <list>
+
+#include "chunk.hpp"
+#include "event.hpp"
+#include "heap.hpp"
+
+using namespace std;
+
+namespace GC {
+    
+    GCEventType GCEvent::getType() {
+        return m_type;
+    }
+
+    TimeStamp GCEvent::getTimeStamp() {
+        return m_timestamp;
+    }
+
+    Chunk *GCEvent::getChunk() {
+        return m_chunk;
+    }
+
+    void GCEvent::printShort() {
+        assert(false && "TODO: unimplemented");
+    }
+
+    void GCEvent::printFull() {
+        assert(false && "TODO: unimplemented");
+    }
+}
\ No newline at end of file
diff --git a/src/GC/lib/heap.cpp b/src/GC/lib/heap.cpp
index bfd6f26..31f4b2e 100644
--- a/src/GC/lib/heap.cpp
+++ b/src/GC/lib/heap.cpp
@@ -141,12 +141,7 @@ namespace GC {
     // get current stack
     auto stack_bottom = reinterpret_cast<uintptr_t *>(__builtin_frame_address(0));
 
-    // fix this block, it's nästy
-    uintptr_t *stack_top;
-    if (heap->m_stack_top != nullptr)
-      stack_top = heap->m_stack_top;
-    else
-      stack_top = (uintptr_t *)0; // temporary
+    uintptr_t *stack_top = heap->m_stack_top != nullptr ? heap->m_stack_top : (uintptr_t *)0;
 
     auto work_list = heap->m_allocated_chunks;
     mark(stack_bottom, stack_top, work_list);
diff --git a/src/GC/lib/profiler.cpp b/src/GC/lib/profiler.cpp
new file mode 100644
index 0000000..6138a52
--- /dev/null
+++ b/src/GC/lib/profiler.cpp
@@ -0,0 +1,34 @@
+#include <iostream>
+#include <vector>
+
+#include "chunk.hpp"
+#include "event.hpp"
+#include "heap.hpp"
+#include "profiler.hpp"
+
+namespace GC {
+    void Profiler::record(GCEventType type) {
+        auto event = new GCEvent(type);
+        auto profiler = Profiler::the();
+        profiler->m_events.push_back(event);
+    }
+
+    void Profiler::record(GCEventType type, Chunk *chunk) {
+        auto event = new GCEvent(type, chunk);
+        auto profiler = Profiler::the();
+        profiler->m_events.push_back(event);
+    }
+
+    void Profiler::printTrace(PrintTraceOptions opt) {
+        auto profiler = Profiler::the();
+        auto start = profiler->m_events.begin();
+        auto end = profiler->m_events.end();
+        while (start != end) {
+            auto event = *start++;
+            if (opt == Short)
+                event->printShort();
+            else
+                event->printFull();
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/GC/tests/h_test.out.dSYM/Contents/Info.plist b/src/GC/tests/h_test.out.dSYM/Contents/Info.plist
deleted file mode 100644
index 3db2218..0000000
--- a/src/GC/tests/h_test.out.dSYM/Contents/Info.plist
+++ /dev/null
@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-	<dict>
-		<key>CFBundleDevelopmentRegion</key>
-		<string>English</string>
-		<key>CFBundleIdentifier</key>
-		<string>com.apple.xcode.dsym.h_test.out</string>
-		<key>CFBundleInfoDictionaryVersion</key>
-		<string>6.0</string>
-		<key>CFBundlePackageType</key>
-		<string>dSYM</string>
-		<key>CFBundleSignature</key>
-		<string>????</string>
-		<key>CFBundleShortVersionString</key>
-		<string>1.0</string>
-		<key>CFBundleVersion</key>
-		<string>1</string>
-	</dict>
-</plist>
diff --git a/src/GC/tests/h_test.out.dSYM/Contents/Resources/DWARF/h_test.out b/src/GC/tests/h_test.out.dSYM/Contents/Resources/DWARF/h_test.out
deleted file mode 100644
index d3ad3e7..0000000
Binary files a/src/GC/tests/h_test.out.dSYM/Contents/Resources/DWARF/h_test.out and /dev/null differ
diff --git a/src/GC/tests/struct_test.cpp b/src/GC/tests/struct_test.cpp
new file mode 100644
index 0000000..2b2b677
--- /dev/null
+++ b/src/GC/tests/struct_test.cpp
@@ -0,0 +1,41 @@
+#include <iostream>
+
+#include "heap.hpp"
+
+using namespace std;
+
+struct Node {
+    int value;
+    Node *left;
+    Node *right;
+};
+
+int getValue();
+Node *createNode();
+void insert();
+
+int main() {
+    GC::Heap::init();
+    Node *node = static_cast<Node *>(GC::Heap::alloc(sizeof(Node)));
+
+    return 0;
+}
+
+int getValue() {
+    cout << "Enter a value to insert: ";
+    int value;
+    cin >> value;
+    return value;
+}
+
+Node *createNode() {
+    Node *node = static_cast<Node *>(GC::Heap::alloc(sizeof(Node)));
+    node->value = getValue();
+    return node;
+}
+
+void insert(Node *root) {
+    Node *node = createNode();
+    Node *curr = root;
+    while (curr)
+}
\ No newline at end of file