Cleanup, removal of headers part 1

cpp_lib.todo

@@ -1,23 +1,26 @@
 [#TODO]
-  [ ] Context should include links to other living thread data (+ save dead threads in debug mode)
-  [ ] GetUnixTimestamp for timing and rdtsc for timing.
-  [ ] Thread primitives (Mutex, Semaphore, etc.)
-  [ ] Thread Creation / Deletion
   [ ] Base layer and OS abstraction for Windows. (Ryan's Win32 platform layer is ~2k lines of code.)
-    - just implement the stuff we need
+    • ryan uses os_thread_launch (CreateThread) /join (WaitForSingleObject+CloseHandle)/detach (CloseHandle ?? what type?)
+    See: base_threads
+    just implement the stuff we need for:
+    He launches a bunch of async threads from `main_thread_base_entry_point`
+    • Creating / destroying threads.
+    • rdtsc for timing
+    • Thread primitives (Mutex, Semaphore, etc.)
+    • Thread Creation / Deletion
+    [ ] CreateWindow and other Windows-specific features for handling messaging.
+  [ ] Context should include links to other living thread data (+ save dead threads in debug mode)
+  
   [ ] push_scratch() macro. (basically an auto_release_temp)
-  [ ] CreateWindow
+  [ ] Start removing irrelevant header files (for unity build system)
+  
   [ ] ... Mouse / Keyboard inputs
   [*] This is the order I want to follow, because I need them in thread context.
     - Entry point(s) `Entry_Point_Main.cpp`
       -> We can have a lib_init() instead of a clear entry point for now.
       -> Switch from library to application once I add an entry point
       -> See how rjf abstracts his entry points for each platform with TCTX.
-  [ ] 1. setup thread-local storage via thread_static (see raddbg, base_core.h, 
-    C_LINKAGE thread_static TCTX *tctx_thread_local;
-        >> Must be assigned at entry point (arena_alloc())
-        >> TCTX defined in base_thread_context.h
-    > See Base_Thread.h
+
 [Design Stuff]
   [ ] "Primary Thread" <- Main entry point thread
   [ ] "Secondary Thread" <- does all the heavy lifting for the first thread and synchronizes with the first.
@@ -27,12 +30,17 @@
   [ ] Does calling SetProcessWorkingSetSize(.., -1, -1) cause the program to crash? Why tho.
     [ ] Maybe we just shouldn't do this?
     [ ] *our* program memory usage can be calculated by Stack Size + allocations from GPAllocator + allocations from arena.
+  [ ] I want to be able to create new Windows (instances) of the program that can communicate with one another.
+  I want one program to be the "Main" and always in-tray, and the others to be "child instances"
 [TODO - Low priority]
     [ ] Fix implementation so all source is just in .cpp files (including templates), and auto-generate forward declares like Vjekoslav does.
     [ ] Implement Secure Arenas (with VirtualLock, wiping memory with RtlSecureZeroMemory)
     [ ] Way to serialize and deserialize settings in Text (I think using binary is a mistake here?).
-[Project Ideas]
+[Project Ideas] - order of operations:
+    [ ] Pushbullet replacement should make it easy to understand how data can be securely moved over the internet via a central server.
+    [ ] Signal replacement 
     [ ](Graphics): How do I create a basic overlay that shows the time, date, cpu/gpu temps, frequency, memory usage all the time and responds to global hotkey to show more info
+    
 [Documentation Notes]
   Main inspirations for this codebase:
     (1) jonathan blow & jai compiler project

lib/Base/Allocator.cpp

@@ -7,6 +7,7 @@ void* internal_alloc    (s64 size) {
   return result;
 }
 
+// #NOTE: internal_realloc does NOT copy anything! It just hands you new memory to work with!
 void* internal_realloc  (void* memory, s64 size, s64 old_size) {
   Allocator allocator = get_context_allocator();
   void* result = allocator.proc(Allocator_Mode::RESIZE, size, old_size, memory, allocator.data);

lib/Base/Allocator.h

@@ -76,12 +76,16 @@ template <typename T> T* NewArray (s64 count, bool initialize=true) {
   return memory;
 }
 
-// #TODO: allocator versions of resize and delete
-template <typename T> T* Resize (Allocator allocator, void* memory, s64 size, s64 old_size, bool initialize=true) {
+// Likely will rarely be used, if ever. See: internal_realloc
+template <typename T> force_inline T* Resize (Allocator allocator, void* memory, s64 size, s64 old_size, bool initialize=true) {
   void* result = allocator.proc(Allocator_Mode::RESIZE, size, old_size, memory, allocator.data);
   return result;
 }
-// template <typename T> void Delete (Allocator allocator, void* memory) {
+
+// There's not really any reason for this to be a template
+force_inline void Delete (Allocator allocator, void* memory) {
+  allocator.proc(Allocator_Mode::DEALLOCATE, 0, 0, memory, allocator.data);
+}
 
 // We use internal functions when we assume the user just wants to use the
 // current allocator on the context.

lib/Base/Arena.cpp

@@ -5,6 +5,8 @@
 
 constexpr u16 ARENA_DEFAULT_ALIGNMENT = CPU_REGISTER_WIDTH_BYTES;
 
+// For arrays, use `Array`, which is backed by the general purpose allocator
+// or use `ArenaArray` if you need to expand the size to an unknown size.
 void* arena_allocator_proc (Allocator_Mode mode, s64 requested_size, s64 old_size, void* old_memory, void* allocator_data) {
   Arena* arena = (Arena*)allocator_data;
   Assert(arena != nullptr);
@@ -14,8 +16,9 @@ void* arena_allocator_proc (Allocator_Mode mode, s64 requested_size, s64 old_siz
     } break;
     case Allocator_Mode::RESIZE: {
       Assert(false); // DO NOT USE RESIZE WITH ARENAS!
-      // Either use Array, which is backed by the general purpose allocator
-      // or use ArenaArray if you need to expand the size.
+      // Or maybeeee...
+      // Resize should check if current_point matches the end of the old allocation?
+      // and resize accordingly + pass back same pointer.
       void* result = arena_alloc(arena, requested_size);
       s64 size_to_copy = old_size < requested_size ? old_size : requested_size;
       if (result && size_to_copy) {

lib/Base/Arena.h

@@ -17,7 +17,8 @@ enum class Arena_Reserve: u8 {
   Size_64M = 2,
   Size_2G  = 3,
   Size_64G = 4,
-  Size_2T  = 5
+  Size_2T  = 5,
+  Size_64T = 6,
 };
 
 enum class Arena_Flags: u8 { 
@@ -117,6 +118,8 @@ struct Auto_Reset {
   }
 };
 
+#define auto_release_temp() auto_release(get_temp_allocator());
+
 #define auto_release(x) \
     Auto_Release Concat(_auto_release_guard_, __LINE__)(x)
 struct Auto_Release {

lib/Base/Base_Thread_Context.h

@@ -21,6 +21,7 @@ struct Thread_Context {
   // #TODO: 
   // Array<Thread*> threads_created; // maybe should be linked-list?
   // Thread* thread_that_created_me = nullptr; // so we can remove from above array
+  // Mutex thread_context_mutex;
   
   string thread_name;
 };
@@ -49,6 +50,6 @@ struct Push_Allocator {
 // Thread-local allocators:
 PROTOTYPING_API Allocator get_temp_allocator();
 PROTOTYPING_API Allocator get_context_allocator();
-PROTOTYPING_API void reset_temp_allocator();
-PROTOTYPING_API void free_temp_allocator();
+// PROTOTYPING_API void reset_temp_allocator();
+// PROTOTYPING_API void free_temp_allocator();
 

lib/Base/Timing.cpp

@@ -1,16 +1,24 @@
-#include "Timing.h"
-
-
 #if OS_WINDOWS
-
+constexpr s64 FILETIME_TO_UNIX = 116444736000000000i64;
 f64 GetUnixTimestamp() {
-    constexpr s64 FILETIME_TO_UNIX = 116444736000000000i64;
     FILETIME fileTime;
     GetSystemTimePreciseAsFileTime(&fileTime);
     s64 ticks = ((s64)fileTime.dwHighDateTime << (s64)32) | (s64)fileTime.dwLowDateTime;
     return (ticks - FILETIME_TO_UNIX) / (10.0 * 1000.0 * 1000.0);
 }
-
-// #TODO: GetUnixTimestampNanoseconds
-
+s64 GetUnixTimestampNanoseconds() {
+    FILETIME fileTime;
+    GetSystemTimePreciseAsFileTime(&fileTime);
+    
+    s64 ticks = ((s64)fileTime.dwHighDateTime << (s64)32) 
+                | (s64)fileTime.dwLowDateTime;  // in 100ns ticks
+    s64 unix_time = (ticks - FILETIME_TO_UNIX); // in 100ns ticks
+    
+    s64 unix_time_nanoseconds = unix_time * 100;
+    
+    return unix_time_nanoseconds;
+}
+#endif
+#if OS_LINUX
+    
 #endif

lib/Base/Timing.h

@@ -1,5 +0,0 @@
-#pragma once
-
-#include "Base.h"
-
-f64 GetUnixTimestamp();

src/OS_Win32.cpp

@@ -146,10 +146,50 @@ internal void Win32_Entry_Point (int argc, WCHAR **argv) {
     info->working_path = wide_to_utf8(memory, length);
     Assert(is_valid(info->working_path));
   }
+  
   // [ ] Get Working directory (info->working_path)
   // [ ] GetEnvironmentStringsW
-  
+  // temp_reset();
   printf("Hello there!\n\n");
   // See: main_thread_base_entry_point
   Main_Entry_Point(argc, argv);
-}
+}
+
+// OS_Thread stuff
+
+
+// Individual Threads
+// os_thread_create
+// os_thread_join 
+// os_thread_detach
+
+// Thread Group API?
+
+// mutexes
+// internal Mutex mutex_alloc(void)                 {return os_mutex_alloc();}
+// internal void  mutex_release(Mutex mutex)        {os_mutex_release(mutex);}
+// internal void  mutex_take(Mutex mutex)           {os_mutex_take(mutex);}
+// internal void  mutex_drop(Mutex mutex)           {os_mutex_drop(mutex);}
+//- rjf: condition variables
+
+// internal CondVar   cond_var_alloc(void)                                                        {return os_cond_var_alloc();}
+// internal void      cond_var_release(CondVar cv)                                                {os_cond_var_release(cv);}
+// internal B32       cond_var_wait(CondVar cv, Mutex mutex, U64 endt_us)                         {return os_cond_var_wait(cv, mutex, endt_us);}
+// internal B32       cond_var_wait_rw(CondVar cv, RWMutex mutex_rw, B32 write_mode, U64 endt_us) {return os_cond_var_wait_rw(cv, mutex_rw, write_mode, endt_us);}
+// internal void      cond_var_signal(CondVar cv)                                                 {os_cond_var_signal(cv);}
+// internal void      cond_var_broadcast(CondVar cv)                                              {os_cond_var_broadcast(cv);}
+
+//- rjf: cross-process semaphores
+
+// internal Semaphore semaphore_alloc(U32 initial_count, U32 max_count, String8 name) {return os_semaphore_alloc(initial_count, max_count, name);}
+// internal void      semaphore_release(Semaphore semaphore)                          {os_semaphore_release(semaphore);}
+// internal Semaphore semaphore_open(String8 name)                                    {return os_semaphore_open(name);}
+// internal void      semaphore_close(Semaphore semaphore)                            {os_semaphore_close(semaphore);}
+// internal B32       semaphore_take(Semaphore semaphore, U64 endt_us)                {return os_semaphore_take(semaphore, endt_us);}
+// internal void      semaphore_drop(Semaphore semaphore)                             {os_semaphore_drop(semaphore);}
+
+//- rjf: barriers
+
+// internal Barrier   barrier_alloc(U64 count)         {return os_barrier_alloc(count);}
+// internal void      barrier_release(Barrier barrier) {os_barrier_release(barrier);}
+// internal void      barrier_wait(Barrier barrier)    {os_barrier_wait(barrier);}