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4coder/win32_4ed.cpp

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/*
* Mr. 4th Dimention - Allen Webster
*
* 12.12.2014
*
* Win32 layer for project codename "4ed"
*
*/
// TOP
#include "4ed_config.h"
#include "4ed_meta.h"
#define FCPP_FORBID_MALLOC
#include "4cpp_types.h"
#define FCPP_STRING_IMPLEMENTATION
#include "4coder_string.h"
#include "4ed_mem.cpp"
#include "4ed_math.cpp"
#include "4ed_dll_reader.h"
#include "4coder_custom.h"
#include "4ed_system.h"
#include "4ed_rendering.h"
#include "4ed.h"
#include <windows.h>
#include <GL/gl.h>
#include "4ed_dll_reader.cpp"
#include "4ed_internal.h"
#include "4ed_win32_keyboard.cpp"
#define FPS 30
#define frame_useconds (1000000 / FPS)
struct Thread_Context{
u32 job_id;
b32 running;
Work_Queue *queue;
u32 id;
u32 windows_id;
HANDLE handle;
};
struct Thread_Group{
Thread_Context *threads;
i32 count;
};
#define UseWinDll 1
#define UseThreadMemory 1
struct Win32_Vars{
HWND window_handle;
Key_Codes key_codes;
Key_Input_Data input_data, previous_data;
Render_Target target;
Mouse_State mouse;
b32 focus;
b32 keep_playing;
HCURSOR cursor_ibeam;
HCURSOR cursor_arrow;
HCURSOR cursor_leftright;
HCURSOR cursor_updown;
Application_Mouse_Cursor prev_mouse_cursor;
Clipboard_Contents clipboard_contents;
b32 next_clipboard_is_self;
DWORD clipboard_sequence;
Thread_Context main_thread;
Thread_Group groups[THREAD_GROUP_COUNT];
HANDLE locks[LOCK_COUNT];
HANDLE DEBUG_sysmem_lock;
#if UseThreadMemory
Thread_Memory *thread_memory;
#endif
u64 performance_frequency;
u64 start_pcount;
u64 start_time;
HMODULE custom;
#if UseWinDll
HMODULE app_code;
#else
DLL_Loaded app_dll;
#endif
System_Functions *system;
App_Functions app;
Config_API config_api;
#if FRED_INTERNAL
Sys_Bubble internal_bubble;
#endif
};
globalvar Win32_Vars win32vars;
globalvar Application_Memory memory_vars;
globalvar Exchange exchange_vars;
#if FRED_INTERNAL
internal Bubble*
INTERNAL_system_sentinel(){
return (&win32vars.internal_bubble);
}
internal void
INTERNAL_system_debug_message(char *message){
OutputDebugString(message);
}
#endif
internal void*
Win32GetMemory_(i32 size, i32 line_number, char *file_name){
void *ptr = 0;
#if FRED_INTERNAL
ptr = VirtualAlloc(0, size + sizeof(Sys_Bubble), MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
Sys_Bubble *bubble = (Sys_Bubble*)ptr;
bubble->flags = MEM_BUBBLE_SYS_DEBUG;
bubble->line_number = line_number;
bubble->file_name = file_name;
bubble->size = size;
WaitForSingleObject(win32vars.DEBUG_sysmem_lock, INFINITE);
insert_bubble(&win32vars.internal_bubble, bubble);
ReleaseSemaphore(win32vars.DEBUG_sysmem_lock, 1, 0);
ptr = bubble + 1;
#else
ptr = VirtualAlloc(0, size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
#endif
return ptr;
}
#define Win32GetMemory(size) Win32GetMemory_(size, __LINE__, __FILE__)
internal void
Win32FreeMemory(void *block){
if (block){
#if FRED_INTERNAL
Sys_Bubble *bubble = ((Sys_Bubble*)block) - 1;
Assert((bubble->flags & MEM_BUBBLE_DEBUG_MASK) == MEM_BUBBLE_SYS_DEBUG);
WaitForSingleObject(win32vars.DEBUG_sysmem_lock, INFINITE);
remove_bubble(bubble);
ReleaseSemaphore(win32vars.DEBUG_sysmem_lock, 1, 0);
VirtualFree(bubble, 0, MEM_RELEASE);
#else
VirtualFree(block, 0, MEM_RELEASE);
#endif
}
}
inline void
system_free_memory(void *block){
Win32FreeMemory(block);
}
internal Data
system_load_file(char *filename){
Data result = {};
HANDLE file;
file = CreateFile((char*)filename, GENERIC_READ, 0, 0,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
if (!file || file == INVALID_HANDLE_VALUE){
return result;
}
DWORD lo, hi;
lo = GetFileSize(file, &hi);
if (hi != 0){
CloseHandle(file);
return result;
}
result.size = (lo) + (((u64)hi) << 32);
result.data = (byte*)Win32GetMemory(result.size);
if (!result.data){
CloseHandle(file);
result = {};
return result;
}
DWORD read_size;
BOOL read_result = ReadFile(file, result.data, result.size,
&read_size, 0);
if (!read_result || read_size != (u32)result.size){
CloseHandle(file);
Win32FreeMemory(result.data);
result = {};
return result;
}
CloseHandle(file);
return result;
}
#include "4ed_rendering.cpp"
internal b32
system_save_file(char *filename, void *data, i32 size){
HANDLE file;
file = CreateFile((char*)filename, GENERIC_WRITE, 0, 0,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
if (!file || file == INVALID_HANDLE_VALUE){
return 0;
}
BOOL write_result;
DWORD bytes_written;
write_result = WriteFile(file, data, size, &bytes_written, 0);
CloseHandle(file);
if (!write_result || bytes_written != (u32)size){
return 0;
}
return 1;
}
internal
Sys_File_Time_Stamp_Sig(system_file_time_stamp){
u64 result;
result = 0;
FILETIME last_write;
WIN32_FILE_ATTRIBUTE_DATA data;
if (GetFileAttributesEx((char*)filename, GetFileExInfoStandard, &data)){
last_write = data.ftLastWriteTime;
result = ((u64)last_write.dwHighDateTime << 32) | (last_write.dwLowDateTime);
result /= 10;
}
return result;
}
internal
Sys_Time_Sig(system_time){
u64 result = 0;
LARGE_INTEGER time;
if (QueryPerformanceCounter(&time)){
result = (u64)(time.QuadPart - win32vars.start_pcount) * 1000000 / win32vars.performance_frequency;
result += win32vars.start_time;
}
return result;
}
internal
Sys_Set_File_List_Sig(system_set_file_list){
if (directory.size > 0){
char dir_space[MAX_PATH + 32];
String dir = make_string(dir_space, 0, MAX_PATH + 32);
append(&dir, directory);
char trail_str[] = "\\*";
append(&dir, trail_str);
char *c_str_dir = make_c_str(dir);
WIN32_FIND_DATA find_data;
HANDLE search;
search = FindFirstFileA(c_str_dir, &find_data);
if (search != INVALID_HANDLE_VALUE){
i32 count = 0;
i32 file_count = 0;
BOOL more_files = 1;
do{
if (!match(find_data.cFileName, ".") &&
!match(find_data.cFileName, "..")){
++file_count;
i32 size = 0;
for(;find_data.cFileName[size];++size);
count += size + 1;
}
more_files = FindNextFile(search, &find_data);
}while(more_files);
FindClose(search);
i32 required_size = count + file_count * sizeof(File_Info);
if (file_list->block_size < required_size){
if (file_list->block){
Win32FreeMemory(file_list->block);
}
file_list->block = Win32GetMemory(required_size);
}
file_list->infos = (File_Info*)file_list->block;
char *name = (char*)(file_list->infos + file_count);
if (file_list->block){
search = FindFirstFileA(c_str_dir, &find_data);
if (search != INVALID_HANDLE_VALUE){
File_Info *info = file_list->infos;
more_files = 1;
do{
if (!match(find_data.cFileName, ".") &&
!match(find_data.cFileName, "..")){
info->folder = (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
info->filename.str = name;
char *name_base = name;
i32 i = 0;
for(;find_data.cFileName[i];++i) *name++ = find_data.cFileName[i];
info->filename.size = (i32)(name - name_base);
info->filename.memory_size = info->filename.size + 1;
*name++ = 0;
++info;
}
more_files = FindNextFile(search, &find_data);
}while(more_files);
FindClose(search);
file_list->count = file_count;
}else{
Win32FreeMemory(file_list->block);
file_list->block = 0;
file_list->block_size = 0;
}
}
}
}
}
internal
DIRECTORY_HAS_FILE_SIG(system_directory_has_file){
char *full_filename;
char space[1024];
HANDLE file;
b32 result;
i32 len;
full_filename = 0;
len = str_size(filename);
if (dir.memory_size - dir.size - 1 >= len){
full_filename = dir.str;
memcpy(dir.str + dir.size, filename, len + 1);
}
else if (dir.size + len + 1 < 1024){
full_filename = space;
memcpy(full_filename, dir.str, dir.size);
memcpy(full_filename + dir.size, filename, len + 1);
}
result = 0;
if (full_filename){
file = CreateFile((char*)full_filename, GENERIC_READ, 0, 0,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
if (file != INVALID_HANDLE_VALUE){
CloseHandle(file);
result = 1;
}
dir.str[dir.size] = 0;
}
return(result);
}
b32 Win32DirectoryExists(char *path){
DWORD attrib = GetFileAttributesA(path);
return (attrib != INVALID_FILE_ATTRIBUTES &&
(attrib & FILE_ATTRIBUTE_DIRECTORY));
}
internal
DIRECTORY_CD_SIG(system_directory_cd){
b32 result = 0;
i32 old_size;
i32 len;
if (rel_path[0] != 0){
if (rel_path[0] == '.' && rel_path[1] == 0){
result = 1;
}
else if (rel_path[0] == '.' && rel_path[1] == '.' && rel_path[2] == 0){
result = remove_last_folder(dir);
terminate_with_null(dir);
}
else{
len = str_size(rel_path);
if (dir->size + len + 1 > dir->memory_size){
old_size = dir->size;
append_partial(dir, rel_path);
append_partial(dir, "\\");
if (Win32DirectoryExists(dir->str)){
result = 1;
}
else{
dir->size = old_size;
}
}
}
}
return(result);
}
internal
Sys_Post_Clipboard_Sig(system_post_clipboard){
if (OpenClipboard(win32vars.window_handle)){
EmptyClipboard();
HANDLE memory_handle;
memory_handle = GlobalAlloc(GMEM_MOVEABLE, str.size+1);
if (memory_handle){
char *dest = (char*)GlobalLock(memory_handle);
copy_fast_unsafe(dest, str);
GlobalUnlock(memory_handle);
SetClipboardData(CF_TEXT, memory_handle);
win32vars.next_clipboard_is_self = 1;
}
CloseClipboard();
}
}
internal void
Win32RedrawScreen(HDC hdc){
launch_rendering(&win32vars.target);
win32vars.target.size = 0;
glFlush();
SwapBuffers(hdc);
}
internal void
Win32Resize(i32 width, i32 height){
if (width > 0 && height > 0){
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, width, height, 0, -1, 1);
glScissor(0, 0, width, height);
win32vars.target.width = width;
win32vars.target.height = height;
}
}
#define HOTKEY_ALT_ID 0
internal LRESULT
Win32Callback(HWND hwnd, UINT uMsg,
WPARAM wParam, LPARAM lParam){
LRESULT result = {};
switch (uMsg){
case WM_MENUCHAR:
case WM_SYSCHAR:break;
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_KEYUP:
{
switch (wParam){
case VK_CONTROL:case VK_LCONTROL:case VK_RCONTROL:
case VK_MENU:case VK_LMENU:case VK_RMENU:
case VK_SHIFT:case VK_LSHIFT:case VK_RSHIFT: break;
default:
b8 previous_state, current_state;
previous_state = ((lParam & Bit_30)?(1):(0));
current_state = ((lParam & Bit_31)?(0):(1));
if (current_state){
u8 key = keycode_lookup((u8)wParam);
i32 *count = 0;
Key_Event_Data *data = 0;
if (!previous_state){
count = &win32vars.input_data.press_count;
data = win32vars.input_data.press;
}
else{
count = &win32vars.input_data.hold_count;
data = win32vars.input_data.hold;
}
if (*count < KEY_INPUT_BUFFER_SIZE){
if (!key){
UINT vk = (UINT)wParam;
UINT scan = (UINT)((lParam >> 16) & 0x7F);
BYTE state[256];
WORD x;
int result;
GetKeyboardState(state);
if (win32vars.input_data.control_keys[CONTROL_KEY_CONTROL] &&
!win32vars.input_data.control_keys[CONTROL_KEY_ALT])
state[VK_CONTROL] = 0;
result = ToAscii(vk, scan, state, &x, 0);
if (result == 1 && x < 128){
key = (u8)x;
if (key == '\r') key = '\n';
data[*count].character = key;
state[VK_CAPITAL] = 0;
result = ToAscii(vk, scan, state, &x, 0);
if (result == 1 && x < 128){
key = (u8)x;
if (key == '\r') key = '\n';
data[*count].character_no_caps_lock = key;
data[*count].keycode = key;
}
}
if (result != 1 || x >= 128){
data[*count].character = 0;
data[*count].character_no_caps_lock = 0;
data[*count].keycode = 0;
}
}
else{
data[*count].character = 0;
data[*count].character_no_caps_lock = 0;
data[*count].keycode = key;
}
++(*count);
}
}
result = DefWindowProc(hwnd, uMsg, wParam, lParam);
}
}break;
case WM_INPUT:
{
char buffer[sizeof(RAWINPUT)] = {};
UINT size = sizeof(RAWINPUT);
GetRawInputData((HRAWINPUT)(lParam), RID_INPUT, buffer, &size, sizeof(RAWINPUTHEADER));
RAWINPUT *rawinput = (RAWINPUT*)(buffer);
if (rawinput->header.dwType == RIM_TYPEKEYBOARD){
RAWKEYBOARD *raw = &rawinput->data.keyboard;
UINT vk = raw->VKey;
UINT flags = raw->Flags;
b8 down = !(flags & 1);
if (vk != 255){
if (vk == VK_SHIFT){
win32vars.input_data.control_keys[CONTROL_KEY_SHIFT] = down;
}
else if (vk == VK_CONTROL){
win32vars.input_data.control_keys[CONTROL_KEY_CONTROL] = down;
}
else if (vk == VK_MENU){
UINT is_gr = ((flags & RI_KEY_E0) != 0);
if (!is_gr){
win32vars.input_data.control_keys[CONTROL_KEY_ALT] = down;
}
}
}
}
result = DefWindowProcA(hwnd, uMsg, wParam, lParam);
}break;
case WM_MOUSEMOVE:
{
win32vars.mouse.x = LOWORD(lParam);
win32vars.mouse.y = HIWORD(lParam);
}break;
case WM_MOUSEWHEEL:
{
i16 rotation = GET_WHEEL_DELTA_WPARAM(wParam);
if (rotation > 0){
win32vars.mouse.wheel = 1;
}
else{
win32vars.mouse.wheel = -1;
}
}break;
case WM_LBUTTONDOWN:
{
win32vars.mouse.left_button = true;
}break;
case WM_RBUTTONDOWN:
{
win32vars.mouse.right_button = true;
}break;
case WM_LBUTTONUP:
{
win32vars.mouse.left_button = false;
}break;
case WM_RBUTTONUP:
{
win32vars.mouse.right_button = false;
}break;
case WM_KILLFOCUS:
{
win32vars.focus = 0;
win32vars.mouse.left_button = false;
win32vars.mouse.right_button = false;
}break;
case WM_SETFOCUS:
{
win32vars.focus = 1;
for (int i = 0; i < CONTROL_KEY_COUNT; ++i){
win32vars.input_data.control_keys[i] = 0;
}
}break;
case WM_SIZE:
{
if (win32vars.target.handle){
i32 new_width = LOWORD(lParam);
i32 new_height = HIWORD(lParam);
Win32Resize(new_width, new_height);
}
}break;
case WM_PAINT:
{
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps);
Clipboard_Contents empty_contents = {};
win32vars.app.step(win32vars.system,
&win32vars.key_codes,
&win32vars.previous_data,
&win32vars.mouse,
&win32vars.target,
&memory_vars,
&exchange_vars,
empty_contents,
0, 0, 1);
Win32RedrawScreen(hdc);
EndPaint(hwnd, &ps);
}break;
case WM_CLOSE: // NOTE(allen): I expect WM_CLOSE not WM_DESTROY
case WM_DESTROY:
{
win32vars.keep_playing = 0;
}break;
default:
{
result = DefWindowProc(hwnd, uMsg, wParam, lParam);
}break;
}
return result;
}
internal HANDLE
Win32Handle(Plat_Handle h){
HANDLE result;
result = {};
result = *(HANDLE*)(&h);
return(result);
}
internal Plat_Handle
Win32GenHandle(HANDLE h){
Assert(sizeof(Plat_Handle) >= sizeof(HANDLE));
Plat_Handle result;
result = *(Plat_Handle*)(&h);
return(result);
}
internal DWORD WINAPI
ThreadProc(LPVOID lpParameter){
Thread_Context *thread = (Thread_Context*)lpParameter;
Work_Queue *queue = thread->queue;
for (;;){
u32 read_index = queue->read_position;
u32 write_index = queue->write_position;
if (read_index != write_index){
u32 next_read_index = (read_index + 1) % JOB_ID_WRAP;
u32 safe_read_index =
InterlockedCompareExchange(&queue->read_position,
next_read_index, read_index);
if (safe_read_index == read_index){
Full_Job_Data *full_job = queue->jobs + (safe_read_index % QUEUE_WRAP);
// NOTE(allen): This is interlocked so that it plays nice
// with the cancel job routine, which may try to cancel this job
// at the same time that we try to run it
i32 safe_running_thread =
InterlockedCompareExchange(&full_job->running_thread,
thread->id, THREAD_NOT_ASSIGNED);
if (safe_running_thread == THREAD_NOT_ASSIGNED){
thread->job_id = full_job->id;
thread->running = 1;
#if UseThreadMemory
Thread_Memory *thread_memory = 0;
#endif
// TODO(allen): remove memory_request
if (full_job->job.memory_request != 0){
#if UseThreadMemory
thread_memory = win32vars.thread_memory + thread->id - 1;
if (thread_memory->size < full_job->job.memory_request){
if (thread_memory->data){
Win32FreeMemory(thread_memory->data);
}
i32 new_size = LargeRoundUp(full_job->job.memory_request, Kbytes(4));
thread_memory->data = Win32GetMemory(new_size);
thread_memory->size = new_size;
}
#endif
}
full_job->job.callback(win32vars.system, thread, thread_memory,
&exchange_vars.thread, full_job->job.data);
full_job->running_thread = 0;
thread->running = 0;
}
}
}
else{
WaitForSingleObject(Win32Handle(queue->semaphore), INFINITE);
}
}
}
internal
Sys_Post_Job_Sig(system_post_job){
Work_Queue *queue = exchange_vars.thread.queues + group_id;
Assert((queue->write_position + 1) % QUEUE_WRAP != queue->read_position % QUEUE_WRAP);
b32 success = 0;
u32 result = 0;
while (!success){
u32 write_index = queue->write_position;
u32 next_write_index = (write_index + 1) % JOB_ID_WRAP;
u32 safe_write_index =
InterlockedCompareExchange(&queue->write_position,
next_write_index, write_index);
if (safe_write_index == write_index){
result = write_index;
write_index = write_index % QUEUE_WRAP;
queue->jobs[write_index].job = job;
queue->jobs[write_index].running_thread = THREAD_NOT_ASSIGNED;
queue->jobs[write_index].id = result;
success = 1;
}
}
ReleaseSemaphore(Win32Handle(queue->semaphore), 1, 0);
return result;
}
internal
Sys_Acquire_Lock_Sig(system_acquire_lock){
WaitForSingleObject(win32vars.locks[id], INFINITE);
}
internal
Sys_Release_Lock_Sig(system_release_lock){
ReleaseSemaphore(win32vars.locks[id], 1, 0);
}
internal
Sys_Cancel_Job_Sig(system_cancel_job){
Work_Queue *queue = exchange_vars.thread.queues + group_id;
Thread_Group *group = win32vars.groups + group_id;
u32 job_index;
u32 thread_id;
Full_Job_Data *full_job;
Thread_Context *thread;
job_index = job_id % QUEUE_WRAP;
full_job = queue->jobs + job_index;
Assert(full_job->id == job_id);
thread_id =
InterlockedCompareExchange(&full_job->running_thread,
0, THREAD_NOT_ASSIGNED);
if (thread_id != THREAD_NOT_ASSIGNED){
system_acquire_lock(CANCEL_LOCK0 + thread_id - 1);
thread = group->threads + thread_id - 1;
TerminateThread(thread->handle, 0);
u32 creation_flag = 0;
thread->handle = CreateThread(0, 0, ThreadProc, thread, creation_flag, (LPDWORD)&thread->windows_id);
system_release_lock(CANCEL_LOCK0 + thread_id - 1);
thread->running = 0;
}
}
#if UseThreadMemory
internal void
system_grow_thread_memory(Thread_Memory *memory){
system_acquire_lock(CANCEL_LOCK0 + memory->id - 1);
void *old_data = memory->data;
i32 old_size = memory->size;
i32 new_size = LargeRoundUp(memory->size*2, Kbytes(4));
memory->data = Win32GetMemory(new_size);
memory->size = new_size;
if (old_data){
memcpy(memory->data, old_data, old_size);
Win32FreeMemory(old_data);
}
system_release_lock(CANCEL_LOCK0 + memory->id - 1);
}
#endif
#if FRED_INTERNAL
internal void
INTERNAL_get_thread_states(Thread_Group_ID id, bool8 *running, i32 *pending){
Work_Queue *queue = exchange_vars.thread.queues + id;
u32 write = queue->write_position;
u32 read = queue->read_position;
if (write < read) write += JOB_ID_WRAP;
*pending = (i32)(write - read);
Thread_Group *group = win32vars.groups + id;
for (i32 i = 0; i < group->count; ++i){
running[i] = (group->threads[i].running != 0);
}
}
#endif
internal
Sys_CLI_Call_Sig(system_cli_call){
char cmd[] = "c:\\windows\\system32\\cmd.exe";
char *env_variables = 0;
char command_line[2048];
b32 success = 1;
String s = make_fixed_width_string(command_line);
copy(&s, make_lit_string("/C "));
append_partial(&s, script_name);
success = terminate_with_null(&s);
if (success){
success = 0;
SECURITY_ATTRIBUTES sec_attributes;
HANDLE out_read;
HANDLE out_write;
sec_attributes = {};
sec_attributes.nLength = sizeof(SECURITY_ATTRIBUTES);
sec_attributes.bInheritHandle = TRUE;
if (CreatePipe(&out_read, &out_write, &sec_attributes, 0)){
if (SetHandleInformation(out_read, HANDLE_FLAG_INHERIT, 0)){
STARTUPINFO startup = {};
startup.cb = sizeof(STARTUPINFO);
startup.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
startup.hStdError = out_write;
startup.hStdOutput = out_write;
startup.wShowWindow = SW_HIDE;
PROCESS_INFORMATION info = {};
Assert(sizeof(Plat_Handle) >= sizeof(HANDLE));
if (CreateProcess(cmd, command_line,
0, 0, TRUE, 0,
env_variables, path,
&startup, &info)){
success = 1;
CloseHandle(info.hThread);
*(HANDLE*)&cli_out->proc = info.hProcess;
*(HANDLE*)&cli_out->out_read = out_read;
*(HANDLE*)&cli_out->out_write = out_write;
}
else{
CloseHandle(out_read);
CloseHandle(out_write);
*(HANDLE*)&cli_out->proc = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_read = INVALID_HANDLE_VALUE;
*(HANDLE*)&cli_out->out_write = INVALID_HANDLE_VALUE;
}
}
else{
// TODO(allen): failed SetHandleInformation
}
}
else{
// TODO(allen): failed CreatePipe
}
}
return success;
}
struct CLI_Loop_Control{
u32 remaining_amount;
};
internal
Sys_CLI_Begin_Update_Sig(system_cli_begin_update){
Assert(sizeof(cli->scratch_space) >= sizeof(CLI_Loop_Control));
CLI_Loop_Control *loop = (CLI_Loop_Control*)cli->scratch_space;
loop->remaining_amount = 0;
}
internal
Sys_CLI_Update_Step_Sig(system_cli_update_step){
HANDLE handle = *(HANDLE*)&cli->out_read;
CLI_Loop_Control *loop = (CLI_Loop_Control*)cli->scratch_space;
b32 has_more = 0;
DWORD remaining = loop->remaining_amount;
u32 pos = 0;
DWORD read_amount = 0;
for (;;){
if (remaining == 0){
if (!PeekNamedPipe(handle, 0, 0, 0, &remaining, 0)) break;
if (remaining == 0) break;
}
if (remaining + pos < max){
has_more = 1;
ReadFile(handle, dest + pos, remaining, &read_amount, 0);
TentativeAssert(remaining == read_amount);
pos += remaining;
remaining = 0;
}
else{
has_more = 1;
ReadFile(handle, dest + pos, max - pos, &read_amount, 0);
TentativeAssert(max - pos == read_amount);
loop->remaining_amount = remaining - (max - pos);
pos = max;
break;
}
}
*amount = pos;
return has_more;
}
internal
Sys_CLI_End_Update_Sig(system_cli_end_update){
b32 close_me = 0;
if (WaitForSingleObject(*(HANDLE*)&cli->proc, 0) == WAIT_OBJECT_0){
close_me = 1;
CloseHandle(*(HANDLE*)&cli->proc);
CloseHandle(*(HANDLE*)&cli->out_read);
CloseHandle(*(HANDLE*)&cli->out_write);
}
return close_me;
}
internal b32
Win32LoadAppCode(){
b32 result = 0;
#if UseWinDll
win32vars.app_code = LoadLibraryA("4ed_app.dll");
if (win32vars.app_code){
result = 1;
App_Get_Functions *get_funcs = (App_Get_Functions*)
GetProcAddress(win32vars.app_code, "app_get_functions");
win32vars.app = get_funcs();
}
#else
Data file = system_load_file("4ed_app.dll");
if (file.data){
i32 error;
DLL_Data dll_data;
if (dll_parse_headers(file, &dll_data, &error)){
Data img;
img.size = dll_total_loaded_size(&dll_data);
img.data = (byte*)
VirtualAlloc((LPVOID)Tbytes(3), img.size,
MEM_COMMIT | MEM_RESERVE,
PAGE_READWRITE);
dll_load(img, &win32vars.app_dll, file, &dll_data);
DWORD extra_;
VirtualProtect(img.data + win32vars.app_dll.text_start,
win32vars.app_dll.text_size,
PAGE_EXECUTE_READ,
&extra_);
result = 1;
App_Get_Functions *get_functions = (App_Get_Functions*)
dll_load_function(&win32vars.app_dll, "app_get_functions", 17);
}
else{
// TODO(allen): file loading error
}
system_free(file.data);
DUMP((byte*)(Tbytes(3)), Kbytes(400));
}
else{
// TODO(allen): file loading error
}
#endif
return result;
}
internal void
Win32LoadSystemCode(){
win32vars.system->file_time_stamp = system_file_time_stamp;
win32vars.system->set_file_list = system_set_file_list;
win32vars.system->directory_has_file = system_directory_has_file;
win32vars.system->directory_cd = system_directory_cd;
win32vars.system->post_clipboard = system_post_clipboard;
win32vars.system->time = system_time;
win32vars.system->cli_call = system_cli_call;
win32vars.system->cli_begin_update = system_cli_begin_update;
win32vars.system->cli_update_step = system_cli_update_step;
win32vars.system->cli_end_update = system_cli_end_update;
win32vars.system->post_job = system_post_job;
win32vars.system->cancel_job = system_cancel_job;
win32vars.system->grow_thread_memory = system_grow_thread_memory;
win32vars.system->acquire_lock = system_acquire_lock;
win32vars.system->release_lock = system_release_lock;
win32vars.system->internal_sentinel = INTERNAL_system_sentinel;
win32vars.system->internal_get_thread_states = INTERNAL_get_thread_states;
win32vars.system->internal_debug_message = INTERNAL_system_debug_message;
}
void
ex__file_insert(File_Slot *pos, File_Slot *file){
file->next = pos->next;
file->next->prev = file;
file->prev = pos;
pos->next = file;
}
void
ex__insert_range(File_Slot *start, File_Slot *end, File_Slot *pos){
end->next->prev = start->prev;
start->prev->next = end->next;
end->next = pos->next;
start->prev = pos;
pos->next->prev = end;
pos->next = start;
}
internal void
ex__check_file(File_Slot *pos){
File_Slot *file = pos;
Assert(pos == pos->next->prev);
for (pos = pos->next;
file != pos;
pos = pos->next){
Assert(pos == pos->next->prev);
}
}
internal void
ex__check(File_Exchange *file_exchange){
ex__check_file(&file_exchange->available);
ex__check_file(&file_exchange->active);
ex__check_file(&file_exchange->free_list);
}
int
WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow){
win32vars = {};
exchange_vars = {};
#if FRED_INTERNAL
win32vars.internal_bubble.next = &win32vars.internal_bubble;
win32vars.internal_bubble.prev = &win32vars.internal_bubble;
win32vars.internal_bubble.flags = MEM_BUBBLE_SYS_DEBUG;
#endif
if (!Win32LoadAppCode()){
// TODO(allen): Failed to load app code, serious problem.
return 99;
}
System_Functions system_;
System_Functions *system = &system_;
win32vars.system = system;
Win32LoadSystemCode();
LARGE_INTEGER lpf;
QueryPerformanceFrequency(&lpf);
win32vars.performance_frequency = lpf.QuadPart;
QueryPerformanceCounter(&lpf);
win32vars.start_pcount = lpf.QuadPart;
FILETIME filetime;
GetSystemTimeAsFileTime(&filetime);
win32vars.start_time = ((u64)filetime.dwHighDateTime << 32) | (filetime.dwLowDateTime);
win32vars.start_time /= 10;
keycode_init(&win32vars.key_codes);
#ifdef FRED_SUPER
win32vars.custom = LoadLibraryA("4coder_custom.dll");
if (win32vars.custom){
win32vars.config_api.get_bindings = (Get_Binding_Data_Function*)
GetProcAddress(win32vars.custom, "get_bindings");
win32vars.config_api.set_extra_font = (Set_Extra_Font_Function*)
GetProcAddress(win32vars.custom, "set_extra_font");
}
#endif
Thread_Context background[4];
memset(background, 0, sizeof(background));
win32vars.groups[BACKGROUND_THREADS].threads = background;
win32vars.groups[BACKGROUND_THREADS].count = ArrayCount(background);
#if UseThreadMemory
Thread_Memory thread_memory[ArrayCount(background)];
win32vars.thread_memory = thread_memory;
#endif
exchange_vars.thread.queues[BACKGROUND_THREADS].semaphore =
Win32GenHandle(
CreateSemaphore(0, 0, win32vars.groups[BACKGROUND_THREADS].count, 0)
);
u32 creation_flag = 0;
for (i32 i = 0; i < win32vars.groups[BACKGROUND_THREADS].count; ++i){
Thread_Context *thread = win32vars.groups[BACKGROUND_THREADS].threads + i;
thread->id = i + 1;
#if UseThreadMemory
Thread_Memory *memory = win32vars.thread_memory + i;
*memory = {};
memory->id = thread->id;
#endif
thread->queue = &exchange_vars.thread.queues[BACKGROUND_THREADS];
thread->handle = CreateThread(0, 0, ThreadProc, thread, creation_flag, (LPDWORD)&thread->windows_id);
}
Assert(win32vars.locks);
for (i32 i = 0; i < LOCK_COUNT; ++i){
win32vars.locks[i] = CreateSemaphore(0, 1, 1, 0);
}
win32vars.DEBUG_sysmem_lock = CreateSemaphore(0, 1, 1, 0);
win32vars.cursor_ibeam = LoadCursor(NULL, IDC_IBEAM);
win32vars.cursor_arrow = LoadCursor(NULL, IDC_ARROW);
win32vars.cursor_leftright = LoadCursor(NULL, IDC_SIZEWE);
win32vars.cursor_updown = LoadCursor(NULL, IDC_SIZENS);
win32vars.prev_mouse_cursor = APP_MOUSE_CURSOR_ARROW;
WNDCLASS window_class = {};
window_class.style = CS_HREDRAW|CS_VREDRAW|CS_OWNDC;
window_class.lpfnWndProc = Win32Callback;
window_class.hInstance = hInstance;
window_class.lpszClassName = "4coder-win32-wndclass";
if (!RegisterClass(&window_class)){
return 1;
}
RECT window_rect = {};
window_rect.right = 800;
window_rect.bottom = 600;
if (!AdjustWindowRect(&window_rect, WS_OVERLAPPEDWINDOW, false)){
// TODO(allen): non-fatal diagnostics
}
#define WINDOW_NAME "4coder-window"
HWND window_handle = {};
window_handle = CreateWindowA(
window_class.lpszClassName,
WINDOW_NAME,
WS_OVERLAPPEDWINDOW | WS_VISIBLE,
CW_USEDEFAULT, CW_USEDEFAULT,
window_rect.right - window_rect.left,
window_rect.bottom - window_rect.top,
0, 0, hInstance, 0);
if (window_handle == 0){
return 2;
}
// TODO(allen): errors?
win32vars.window_handle = window_handle;
HDC hdc = GetDC(window_handle);
GetClientRect(window_handle, &window_rect);
RAWINPUTDEVICE device;
device.usUsagePage = 0x1;
device.usUsage = 0x6;
device.dwFlags = 0;
device.hwndTarget = window_handle;
RegisterRawInputDevices(&device, 1, sizeof(device));
static PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW |
PFD_SUPPORT_OPENGL |
PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
32,
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
16,
0,
0,
PFD_MAIN_PLANE,
0,
0, 0, 0 };
i32 pixel_format;
pixel_format = ChoosePixelFormat(hdc, &pfd);
SetPixelFormat(hdc, pixel_format, &pfd);
win32vars.target.handle = hdc;
win32vars.target.context = wglCreateContext(hdc);
wglMakeCurrent(hdc, (HGLRC)win32vars.target.context);
glEnable(GL_TEXTURE_2D);
glEnable(GL_SCISSOR_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
Win32Resize(window_rect.right - window_rect.left, window_rect.bottom - window_rect.top);
LPVOID base;
#if FRED_INTERNAL
base = (LPVOID)Tbytes(1);
#else
base = (LPVOID)0;
#endif
memory_vars.vars_memory_size = Mbytes(2);
memory_vars.vars_memory = VirtualAlloc(base, memory_vars.vars_memory_size,
MEM_COMMIT | MEM_RESERVE,
PAGE_READWRITE);
#if FRED_INTERNAL
base = (LPVOID)Tbytes(2);
#else
base = (LPVOID)0;
#endif
memory_vars.target_memory_size = Mbytes(512);
memory_vars.target_memory = VirtualAlloc(base, memory_vars.target_memory_size,
MEM_COMMIT | MEM_RESERVE,
PAGE_READWRITE);
if (!memory_vars.vars_memory){
return 4;
}
win32vars.clipboard_sequence = GetClipboardSequenceNumber();
if (win32vars.clipboard_sequence == 0){
system_post_clipboard(make_lit_string(""));
win32vars.clipboard_sequence = GetClipboardSequenceNumber();
win32vars.next_clipboard_is_self = 0;
if (win32vars.clipboard_sequence == 0){
// TODO(allen): diagnostics
}
}
else{
if (IsClipboardFormatAvailable(CF_TEXT)){
if (OpenClipboard(win32vars.window_handle)){
HANDLE clip_data;
clip_data = GetClipboardData(CF_TEXT);
if (clip_data){
win32vars.clipboard_contents.str = (u8*)GlobalLock(clip_data);
if (win32vars.clipboard_contents.str){
win32vars.clipboard_contents.size = str_size((char*)win32vars.clipboard_contents.str);
GlobalUnlock(clip_data);
}
}
CloseClipboard();
}
}
}
win32vars.target.push_clip = draw_push_clip;
win32vars.target.pop_clip = draw_pop_clip;
win32vars.target.push_piece = draw_push_piece;
win32vars.target.font_set.font_info_load = draw_font_info_load;
win32vars.target.font_set.font_load = draw_font_load;
win32vars.target.font_set.release_font = draw_release_font;
win32vars.target.max = Mbytes(1);
win32vars.target.push_buffer = (byte*)Win32GetMemory(win32vars.target.max);
File_Slot file_slots[32];
exchange_vars.file.max = sizeof(file_slots) / sizeof(file_slots[0]);
exchange_vars.file.available = {};
exchange_vars.file.available.next = &exchange_vars.file.available;
exchange_vars.file.available.prev = &exchange_vars.file.available;
exchange_vars.file.active = {};
exchange_vars.file.active.next = &exchange_vars.file.active;
exchange_vars.file.active.prev = &exchange_vars.file.active;
exchange_vars.file.free_list = {};
exchange_vars.file.free_list.next = &exchange_vars.file.free_list;
exchange_vars.file.free_list.prev = &exchange_vars.file.free_list;
exchange_vars.file.files = file_slots;
memset(file_slots, 0, sizeof(file_slots));
char *filename_space = (char*)
Win32GetMemory(FileNameMax*exchange_vars.file.max);
for (int i = 0; i < exchange_vars.file.max; ++i){
File_Slot *slot = file_slots + i;
ex__file_insert(&exchange_vars.file.available, slot);
slot->filename = filename_space;
filename_space += FileNameMax;
}
DWORD required = GetCurrentDirectory(0, 0);
required += 1;
required *= 4;
char *current_directory_mem = (char*)Win32GetMemory(required);
DWORD written = GetCurrentDirectory(required, current_directory_mem);
String current_directory = make_string(current_directory_mem, written, required);
terminate_with_null(&current_directory);
if (!win32vars.app.init(win32vars.system, &win32vars.target,
&memory_vars, &exchange_vars, &win32vars.key_codes,
win32vars.clipboard_contents, current_directory,
win32vars.config_api)){
return 5;
}
win32vars.keep_playing = 1;
timeBeginPeriod(1);
system_acquire_lock(FRAME_LOCK);
Thread_Context *thread = &win32vars.main_thread;
AllowLocal(thread);
b32 first = 1;
i64 timer_start = system_time();
while (win32vars.keep_playing){
ProfileStart(OS_input);
win32vars.previous_data = win32vars.input_data;
win32vars.input_data.press_count = 0;
win32vars.input_data.hold_count = 0;
win32vars.input_data.caps_lock = GetKeyState(VK_CAPITAL) & 0x1;
win32vars.mouse.left_button_prev = win32vars.mouse.left_button;
win32vars.mouse.right_button_prev = win32vars.mouse.right_button;
win32vars.mouse.wheel = 0;
MSG msg;
while (PeekMessage(&msg, 0, 0, 0, PM_REMOVE) && win32vars.keep_playing){
if (msg.message == WM_QUIT){
win32vars.keep_playing = 0;
}else{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
if (!win32vars.keep_playing){
break;
}
win32vars.mouse.out_of_window = 0;
POINT mouse_point;
if (GetCursorPos(&mouse_point) &&
ScreenToClient(window_handle, &mouse_point)){
if (mouse_point.x < 0 || mouse_point.x >= win32vars.target.width ||
mouse_point.y < 0 || mouse_point.y >= win32vars.target.height){
win32vars.mouse.out_of_window = 1;
}
}
else{
win32vars.mouse.out_of_window = 1;
}
win32vars.clipboard_contents = {};
if (win32vars.clipboard_sequence != 0){
DWORD new_number = GetClipboardSequenceNumber();
if (new_number != win32vars.clipboard_sequence){
win32vars.clipboard_sequence = new_number;
if (win32vars.next_clipboard_is_self){
win32vars.next_clipboard_is_self = 0;
}
else if (IsClipboardFormatAvailable(CF_TEXT)){
if (OpenClipboard(win32vars.window_handle)){
HANDLE clip_data;
clip_data = GetClipboardData(CF_TEXT);
if (clip_data){
win32vars.clipboard_contents.str = (u8*)GlobalLock(clip_data);
if (win32vars.clipboard_contents.str){
win32vars.clipboard_contents.size = str_size((char*)win32vars.clipboard_contents.str);
GlobalUnlock(clip_data);
}
}
CloseClipboard();
}
}
}
}
u32 redraw = exchange_vars.thread.force_redraw;
if (redraw){
exchange_vars.thread.force_redraw = 0;
}
ProfileEnd(OS_input);
Application_Step_Result result =
win32vars.app.step(win32vars.system,
&win32vars.key_codes,
&win32vars.input_data,
&win32vars.mouse,
&win32vars.target,
&memory_vars,
&exchange_vars,
win32vars.clipboard_contents,
1, first, redraw);
ProfileStart(OS_frame_out);
first = 0;
switch (result.mouse_cursor_type){
case APP_MOUSE_CURSOR_ARROW:
SetCursor(win32vars.cursor_arrow); break;
case APP_MOUSE_CURSOR_IBEAM:
SetCursor(win32vars.cursor_ibeam); break;
case APP_MOUSE_CURSOR_LEFTRIGHT:
SetCursor(win32vars.cursor_leftright); break;
case APP_MOUSE_CURSOR_UPDOWN:
SetCursor(win32vars.cursor_updown); break;
}
if (result.redraw) Win32RedrawScreen(hdc);
ProfileEnd(OS_frame_out);
ProfileStart(OS_file_process);
{
File_Slot *file;
int d = 0;
for (file = exchange_vars.file.active.next;
file != &exchange_vars.file.active;
file = file->next){
++d;
if (file->flags & FEx_Save){
Assert((file->flags & FEx_Request) == 0);
file->flags &= (~FEx_Save);
system_save_file(file->filename, file->data, file->size);
file->flags |= FEx_Save_Complete;
}
if (file->flags & FEx_Request){
Assert((file->flags & FEx_Save) == 0);
file->flags &= (~FEx_Request);
Data sysfile =
system_load_file(file->filename);
if (sysfile.data == 0){
file->flags |= FEx_Not_Exist;
}
else{
file->flags |= FEx_Ready;
file->data = sysfile.data;
file->size = sysfile.size;
}
}
}
Assert(d == exchange_vars.file.num_active);
for (file = exchange_vars.file.free_list.next;
file != &exchange_vars.file.free_list;
file = file->next){
if (file->data){
system_free_memory(file->data);
}
}
if (exchange_vars.file.free_list.next != &exchange_vars.file.free_list){
ex__insert_range(exchange_vars.file.free_list.next, exchange_vars.file.free_list.prev,
&exchange_vars.file.available);
}
ex__check(&exchange_vars.file);
}
ProfileEnd(OS_file_process);
ProfileStart(frame_sleep);
i64 timer_end = system_time();
i64 end_target = (timer_start + frame_useconds);
system_release_lock(FRAME_LOCK);
while (timer_end < end_target){
DWORD samount = (DWORD)((end_target - timer_end) / 1000);
if (samount > 0) Sleep(samount);
timer_end = system_time();
}
system_acquire_lock(FRAME_LOCK);
timer_start = system_time();7
ProfileEnd(frame_sleep);
}
return 0;
}
// BOTTOM
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