Add stack trace, fix tracking for expandable arenas

lib/Base/Arena.cpp

@@ -85,7 +85,6 @@ bool arena_commit_first_pages (Arena* arena, s64 commit_size, s64 start_offset)
 // Arena* bootstrap_arena (Arena_Reserve new_reserve, s32 default_commit_page_count) {
 Arena* bootstrap_arena_internal (Arena_Reserve new_reserve, s32 default_commit_page_count, string file_path,
           string function_name, s32 line_number) {
-  // #TODO: Store info in debug mode:
   // + Save thread ID/name MAKE A COPY OBVIOUSLY! + PUSH default_allocator!
   // WE USE default_allocator because this arena may be used to back an array!
   s64 commit_size = default_commit_page_count * PLATFORM_MEMORY_PAGE_SIZE;
@@ -103,12 +102,14 @@ Arena* bootstrap_arena_internal (Arena_Reserve new_reserve, s32 default_commit_p
   
   arena_set_bootstrap_flag(arena_ptr);
   
-// #if BUILD_DEBUG
-//   { push_allocator(default_allocator());
-//     arena_ptr->file_path = copy_string(file_path);
-//     arena_ptr->function_name = 
-//   }
-// #endif
+#if BUILD_DEBUG
+  // #TODO: use thread_context()->stack_trace if present instead?
+  { arena_ptr->file_path = file_path;
+    arena_ptr->function_name = function_name;
+    arena_ptr->line_number = line_number;
+    add_arena_to_in_use_list(arena_ptr);
+  }
+#endif
   
   return arena_ptr;
 }
@@ -322,3 +323,22 @@ void* fixed_arena_allocator_proc (Allocator_Mode mode, s64 requested_size, s64 o
   
   return nullptr;
 }
+
+force_inline void initialize_arenas_in_use_list () {
+  if (arenas_in_use.allocated > 0) return;
+  mutex_init(&arenas_in_use_mutex);
+  arenas_in_use.allocator = default_allocator();
+  array_reserve(arenas_in_use, 256);
+}
+
+force_inline void add_arena_to_in_use_list (Arena* arena) {
+  Assert(arenas_in_use.allocated > 0); // check we initialized!
+  lock_guard(&arenas_in_use_mutex);
+  array_add(arenas_in_use, arena);
+}
+
+force_inline void remove_arena_from_in_use_list (Arena* arena) {
+  Assert(arenas_in_use.allocated > 0); // check we initialized!
+  lock_guard(&arenas_in_use_mutex);
+  array_unordered_remove_by_value(arenas_in_use, arena, 1);
+}

lib/Base/Arena.h

@@ -184,3 +184,12 @@ s64 committed_bytes (ArrayView<Arena*> arenas) {
   
   return sum;
 }
+
+#if BUILD_DEBUG
+  global Mutex arenas_in_use_mutex;
+  global Array<Arena*> arenas_in_use;
+  
+  force_inline void initialize_arenas_in_use_list ();
+  force_inline void add_arena_to_in_use_list(Arena* arena);
+  force_inline void remove_arena_from_in_use_list (Arena* arena);
+#endif

lib/Base/Arena_Windows.cpp

@@ -60,6 +60,14 @@ void free_pages_down_to (Arena* arena, s64 pages_to_keep) {
 
 void arena_delete (Arena* arena) {
   if (!is_valid(arena)) return;
+  
+#if BUILD_DEBUG
+  { //default_allocator_free(arena->file_path.data);
+    //default_allocator_free(arena->function_name.data);
+    remove_arena_from_in_use_list(arena);
+  }
+#endif
+  
   bool arena_was_boostrapped = (arena->flags & Arena_Flags::Is_Bootstrapped) == Arena_Flags::Is_Bootstrapped;
   
   // s64 size_tmp = reserve_size(arena);

lib/Base/Array.h

@@ -235,7 +235,6 @@ void array_unordered_remove_by_index (Array<T>& src, s64 index) {
 template <typename T>
 s64 array_unordered_remove_by_value (Array<T>& src, T item, s64 max_count_to_remove) {
   s64 removed_count = 0;
-  
   for (s64 i = 0; i < src.count; i += 1) {
     if (src[i] == item) {
       removed_count += 1;

lib/Base/Base_Thread_Context.cpp

@@ -15,6 +15,9 @@ internal void Bootstrap_Main_Thread_Context () {
   // memset(arena_free_list, 0, sizeof(Arena_Free_List));
   // initialize_arena_free_list(default_allocator());
   
+  // 1b. Setup arena in-use list:
+  initialize_arenas_in_use_list();
+  
   // 2. #NewContext Setup thread local context 
   ExpandableArena* arena_ex = bootstrap_expandable_arena(Arena_Reserve::Size_64M);
   

lib/Base/Base_Thread_Context.h

@@ -1,4 +1,17 @@
 // #hacky fwd declares
+struct Source_Code_Location {
+  string file_name;
+  string function_name;
+  s32 line_number;
+};
+
+struct Stack_Trace_Node {
+  Stack_Trace_Node* next;
+  // Information
+  Source_Code_Location data;
+  s32 call_depth;
+};
+
 struct Error;
 struct Graphics;
 
@@ -12,7 +25,7 @@ struct Thread_Context {
   u16 default_allocator_alignment = 16;
   Logger logger = {nullptr, nullptr};
   String_Builder* log_builder;
-  // Stack_Trace* stack_trace;
+  Stack_Trace_Node* stack_trace; // use `list(stack_trace)` in watch window of raddbg to view as array!
   
   Array<Thread*> child_threads; // maybe should be linked-list?
   Thread_Context* parent_thread_context = nullptr; // so we can remove from above array
@@ -44,12 +57,112 @@ struct Push_Allocator {
   
   Push_Allocator (Allocator new_allocator) {
     context = thread_context();
+    if (this->context != nullptr) {
       old_allocator = context->allocator;
       context->allocator = new_allocator;
+    } else {
+      old_allocator = default_allocator();
+    }
   }
   
   ~Push_Allocator () {
+    if (this->context != nullptr) {
       context->allocator = old_allocator;
     }
+  }
 };
 
+// #stack_trace
+#define ENABLE_STACK_TRACE    BUILD_DEBUG
+
+void push_stack_trace_internal (Thread_Context* context, string file_name, string function_name, s32 line_number) {
+  if (context == nullptr) return;
+  Assert(context != nullptr);
+  // #no_context allocation
+  Stack_Trace_Node* new_node = (Stack_Trace_Node*)default_allocator_new(sizeof(Stack_Trace_Node));
+  
+  new_node->data.file_name = file_name;
+  new_node->data.function_name = function_name;
+  new_node->data.line_number = line_number;
+  new_node->next = nullptr;
+  
+  if (context->stack_trace == nullptr) {
+    new_node->call_depth = 1;
+    
+  } else {
+    new_node->call_depth = context->stack_trace->call_depth + 1;
+    
+    new_node->next = context->stack_trace;
+  }
+  
+  context->stack_trace = new_node;
+}
+
+void pop_stack_trace_internal (Thread_Context* context) {
+  if (context == nullptr) return;
+  Stack_Trace_Node* old_node = context->stack_trace;
+  context->stack_trace = old_node->next;
+  
+  default_allocator_free(old_node);
+}
+
+#if ENABLE_STACK_TRACE
+#define stack_trace() \
+    Push_Stack_Trace Concat(_push_stack_trace_guard_, __LINE__)(__FILE__, __FUNCTION__, __LINE__)
+#else
+#define stack_trace()
+#endif
+
+struct Push_Stack_Trace {
+  Thread_Context* context;
+  
+  Push_Stack_Trace (string file_name, string function_name, s32 line_number) {
+    context = thread_context();
+    push_stack_trace_internal(context, file_name, function_name, line_number);
+  }
+  
+  ~Push_Stack_Trace () {
+    pop_stack_trace_internal(context);
+  }
+};
+
+// #TODO: precede with something like: os_write_string_unsynchronized("Fatal Error!\n\nStack trace:", true);
+string generate_stack_trace (Thread_Context* context) { // #no_context
+  String_Builder* sb = new_string_builder(Arena_Reserve::Size_64K);
+  
+  Stack_Trace_Node* node = context->stack_trace;
+
+  print_to_builder(sb, "Thread index: %d, thread name: %s\n\n", context->thread_idx, context->thread_name.data);
+  
+  while (node) {
+    append(sb, format_string("%s:%d: %s\n", node->data.file_name.data, node->data.line_number, node->data.function_name.data));
+    
+    node = node->next;
+  }
+  
+  append(sb, "\n");
+  
+  push_allocator(default_allocator());
+  return builder_to_string(sb);
+}
+
+// We don't want to use context logger here!
+void print_stack_trace () {
+  Thread_Context* context = thread_context();
+  
+  Stack_Trace_Node* node = context->stack_trace;
+  
+  constexpr bool TO_STANDARD_ERROR = true;
+  
+  os_write_string_unsynchronized(generate_stack_trace(context), TO_STANDARD_ERROR);
+  // while (node) {
+  //   os_write_string_unsynchronized(node->data.file_name, TO_STANDARD_ERROR);
+  //   string line_number_str = format_string(":%d: ", node->data.line_number); // maybe I shouldn't do this?
+  //   os_write_string_unsynchronized(line_number_str, TO_STANDARD_ERROR);
+  //   // os_write_string_unsynchronized("'", TO_STANDARD_ERROR);
+  //   os_write_string_unsynchronized(node->data.function_name, TO_STANDARD_ERROR);
+  //   os_write_string_unsynchronized("\n", TO_STANDARD_ERROR);
+    
+  //   node = node->next;
+  // }
+}

lib/Base/ErrorType.cpp

@@ -82,7 +82,7 @@ void log_error_internal (string file_path, string function_name, s32 line_number
   Assert(tctx != nullptr);
   push_arena(tctx->error_arena);
   
-  String_Builder* sb = new_string_builder(Arena_Reserve::Size_64K);
+  String_Builder* sb = thread_context()->log_builder;
 
   print_to_builder(sb, "%s ", error_severity(severity));
   
@@ -93,7 +93,10 @@ void log_error_internal (string file_path, string function_name, s32 line_number
   
   append(sb, "\n");
   
-  string error_string = builder_to_string(sb);
+  string error_string = copy_string(string_view(sb));
+  
+  reset_string_builder(sb);
+  
   Error* error = new_error(severity, error_string);  
   // Additional information
   error->thread_id     = tctx->thread_idx;

lib/Base/Expandable_Arena.h

@@ -5,23 +5,9 @@
 
 // DO NOT MERGE WITH `Arena`, we need fixed size arenas so that we can back
 // `ArenaArray`s. 
-struct ExpandableArena {
-  u8* current_point               = nullptr;
-  u8* memory_base                 = nullptr;
-  u8* first_uncommitted_page      = nullptr;
-  u16 alignment                   = CPU_REGISTER_WIDTH_BYTES;
-  Arena_Reserve reserve_size      = Arena_Reserve::Size_64K;
-  Arena_Flags flags               = Arena_Flags::None;
-  u32 initial_commit_page_count   = ARENA_DEFAULT_COMMIT_PAGE_COUNT;
-  // Note that this downcasts to Arena*, so can be initialized in the same way.
+struct ExpandableArena : Arena {
   Arena* current;
   Array<Arena*> next_arenas;
-#if BUILD_DEBUG
-  string info;
-  string file_path;
-  string function_name;
-  s32 line_number;
-#endif
 };
 
 #if BUILD_DEBUG

lib/Base/String.cpp

@@ -33,6 +33,21 @@ string copy_string (string s) {
   return str;
 }
 
+string copy_string_no_context (string s) {
+  if (s.count <= 0)
+    return "";
+  string str = {};
+  
+  str.count = s.count;
+  str.data  = (u8*)default_allocator_new(s.count + 1);
+  
+  memcpy(str.data, s.data, s.count);
+  
+  str.data[str.count] = '\0'; // null-terminate for backwards compatibility?
+  
+  return str;
+}
+
 string copy_string (char* c_string) {
   string str = {};
   s64 string_length = strlen(c_string);

lib/Base/String.h

@@ -77,6 +77,7 @@ bool is_valid (string s);
 bool is_c_string (string s);
 u8*  to_c_string (string s);         // #allocates
 string copy_string (string s);       // #allocates, returned string is #null-terminated.
+string copy_string_no_context (string s);
 string copy_string (char* c_string); // #allocates, returned string is #null-terminated.
 string to_string (ArrayView<u8> str);
 ArrayView<u8> to_view (string s);

lib/OS/OS_Win32.cpp

@@ -136,7 +136,13 @@ internal LONG WINAPI Win32_Exception_Filter (EXCEPTION_POINTERS* exception_ptrs)
     for (;;) Sleep(1000);
   }
   
+  // #TODO: Runtime assertion failed?
+  
   // #Exception handling code (TODO)
+  if (thread_context()->stack_trace) {
+    os_write_string_unsynchronized("\n[Win32_Exception_Filter] Stack Trace\n", true);
+    print_stack_trace();
+  }
   
   ExitProcess(1);
   
@@ -144,7 +150,10 @@ internal LONG WINAPI Win32_Exception_Filter (EXCEPTION_POINTERS* exception_ptrs)
 }
 
 // internal void Main_Entry_Point (int argc, WCHAR **argv);
-internal void Win32_Entry_Point (int argc, WCHAR **argv) {
+internal void Win32_Entry_Point (int argc, WCHAR **argv) { stack_trace();
+  os_write_string_unsynchronized("Fatal Error!\n\nStack trace: ", true);
+  print_stack_trace();
+
   // Timed_Block_Print("Win32_Entry_Point");
   // See: w32_entry_point_caller(); (raddebugger)
   SetUnhandledExceptionFilter(&Win32_Exception_Filter);

src/Base_Entry_Point.cpp

@@ -16,7 +16,7 @@ internal void Main_Entry_Point (int argc, WCHAR **argv);
  #endif
 #endif
 
-internal void Main_Entry_Point (int argc, WCHAR **argv) { // #entry_point
+internal void Main_Entry_Point (int argc, WCHAR **argv) { // #entry_point: Main + Context Setup
   // #TODO: Check if base frequency is even available.
   u32 base_frequency = (u32)CPU_Base_Frequency();
   set_cpu_base_frequency(base_frequency); // REQUIRED FOR TIMING MODULE! will depend on CPU
@@ -28,6 +28,8 @@ internal void Main_Entry_Point (int argc, WCHAR **argv) { // #entry_point
   // before setting up the thread context!
   Bootstrap_Main_Thread_Context();
   
+  stack_trace(); // #stack_trace: #entry_point (first stack trace)
+  
 #if OS_WINDOWS
   Win32_Entry_Point(argc, argv);
 #endif
@@ -37,7 +39,7 @@ internal void Main_Entry_Point (int argc, WCHAR **argv) { // #entry_point
 #if BASE_RUN_TESTS
   run_post_setup_tests();
 #endif
-#if BUILD_EXPLORER_APP_WIN32 // #entry_point
+#if BUILD_EXPLORER_APP_WIN32 // #entry_point: Custom program
   Explorer_ImGui_Application_Win32(); // #rename
 #endif
 #if BUILD_CUSTOM_GUI

src/Ex1.cpp

@@ -186,13 +186,12 @@ void Ex1_Control_Panel () { using namespace ImGui;
   push_allocator(temp());
   ArrayView<OS_Drive*> drives = os_get_available_drives(); // only includes drives that are ready.
 
-  
-  if (!USN_Journal_Monitoring_Ready(drives[0]) && Button("Enable USN Monitoring for all drives")) {
-    Win32_Enable_USN_Journal_Monitoring(drives);
-  }
-  if (USN_Journal_Monitoring_Ready(drives[0]) && Button("Query USN Journal")) {
-    Query_USN_Journal(drives);
-  }
+  // if (!USN_Journal_Monitoring_Ready(drives[0]) && Button("Enable USN Monitoring for all drives")) {
+  //   Win32_Enable_USN_Journal_Monitoring(drives);
+  // }
+  // if (USN_Journal_Monitoring_Ready(drives[0]) && Button("Query USN Journal")) {
+  //   Query_USN_Journal(drives);
+  // }
   
   if (!all_drives_enumerated) {
     // Text("drive_table is valid: %d", table_is_valid(drive_table));
@@ -228,9 +227,9 @@ void Ex1_Control_Panel () { using namespace ImGui;
   // string file_path = format_string_temp("%s_DriveData.bin", os_get_machine_name().data);
   string file_path = "D:/TempSync/Filesystem_Data/MUSA-PC3_DriveData.bin";
   Text("fixed file_path: %s", file_path.data);
-  if (!all_drives_enumerated && file_exists(file_path)) { // #autoload
-    Deserialize_ST_File_Enumeration(file_path);
-  }
+  // if (!all_drives_enumerated && file_exists(file_path)) { // #autoload
+  //   Deserialize_ST_File_Enumeration(file_path);
+  // }
   if (drives.count > 0 && !all_drives_enumerated && file_exists(file_path) && Button("Load from file (this machine)")) {
     Deserialize_ST_File_Enumeration(file_path);
   //   Deserialize_Win32_Drives(file_path);
@@ -335,6 +334,28 @@ void ImGui_Debug_Panel () { using namespace ImGui;
       Text(t);
     }
   }*/
+#if BUILD_DEBUG
+  SeparatorText("Default Allocator Allocations");
+  { lock_guard(&allocator_mutex);
+    auto allocations = to_view(get_general_allocator_data()->allocations);
+    Text("%s in %lld allocations", 
+      format_bytes(get_general_allocator_data()->total_bytes_allocated).data,
+      allocations.count);
+    for_each(a, allocations) {
+      Text(" [%lld] ptr: %p (size: %lld, alignment: %d)", 
+        a, allocations[a].memory, allocations[a].size, allocations[a].alignment);
+    }
+  }
+  SeparatorText("Arenas in Use");
+  { lock_guard(&arenas_in_use_mutex);
+    Assert(arenas_in_use.allocated > 0);
+    for_each(a, arenas_in_use) {
+      auto arena = arenas_in_use[a];
+      if (!is_valid(arena)) continue;
+      Text("[%d], source %s:%d (%s)", a, arena->file_path.data, arena->line_number, arena->function_name.data);
+    }
+  }
+#endif // BUILD_DEBUG
   SeparatorText("Child Threads");
   SeparatorText("Errors");
   ArrayView<Error*> errors = get_all_errors(thread_context());