mirror of
https://github.com/Ed94/Odin.git
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Delay importing entities till all other entities are collected
This commit is contained in:
Ginger Bill
+1
-173
@@ -1,175 +1,3 @@
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when ODIN_OS == "windows" {
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#import "win32.odin"
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#load "os_windows.odin"
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}
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#import "fmt.odin"
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File_Time :: type u64
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File :: struct {
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Handle :: raw_union {
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p: rawptr
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i: int
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}
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handle: Handle
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last_write_time: File_Time
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}
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open :: proc(name: string) -> (File, bool) {
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using win32
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buf: [300]byte
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copy(buf[:], name as []byte)
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f: File
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f.handle.p = CreateFileA(^buf[0], FILE_GENERIC_READ, FILE_SHARE_READ, nil, OPEN_EXISTING, 0, nil) as rawptr
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success := f.handle.p != INVALID_HANDLE_VALUE
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f.last_write_time = last_write_time(^f)
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return f, success
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}
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create :: proc(name: string) -> (File, bool) {
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using win32
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buf: [300]byte
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copy(buf[:], name as []byte)
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f: File
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f.handle.p = CreateFileA(^buf[0], FILE_GENERIC_WRITE, FILE_SHARE_READ, nil, CREATE_ALWAYS, 0, nil) as rawptr
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success := f.handle.p != INVALID_HANDLE_VALUE
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f.last_write_time = last_write_time(^f)
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return f, success
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}
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close :: proc(using f: ^File) {
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win32.CloseHandle(handle.p as win32.HANDLE)
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}
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write :: proc(using f: ^File, buf: []byte) -> bool {
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bytes_written: i32
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return win32.WriteFile(handle.p as win32.HANDLE, buf.data, buf.count as i32, ^bytes_written, nil) != 0
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}
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file_has_changed :: proc(f: ^File) -> bool {
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last_write_time := last_write_time(f)
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if f.last_write_time != last_write_time {
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f.last_write_time = last_write_time
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return true
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}
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return false
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}
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last_write_time :: proc(f: ^File) -> File_Time {
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file_info: win32.BY_HANDLE_FILE_INFORMATION
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win32.GetFileInformationByHandle(f.handle.p as win32.HANDLE, ^file_info)
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l := file_info.last_write_time.low_date_time as File_Time
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h := file_info.last_write_time.high_date_time as File_Time
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return l | h << 32
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}
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last_write_time_by_name :: proc(name: string) -> File_Time {
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last_write_time: win32.FILETIME
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data: win32.WIN32_FILE_ATTRIBUTE_DATA
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buf: [1024]byte
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path := buf[:0]
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fmt.bprint(^path, name, "\x00")
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if win32.GetFileAttributesExA(path.data, win32.GetFileExInfoStandard, ^data) != 0 {
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last_write_time = data.last_write_time
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}
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l := last_write_time.low_date_time as File_Time
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h := last_write_time.high_date_time as File_Time
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return l | h << 32
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}
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File_Standard :: type enum {
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INPUT,
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OUTPUT,
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ERROR,
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}
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// NOTE(bill): Uses startup to initialize it
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__std_files := [File_Standard.count]File{
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{handle = win32.GetStdHandle(win32.STD_INPUT_HANDLE) transmute File.Handle },
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{handle = win32.GetStdHandle(win32.STD_OUTPUT_HANDLE) transmute File.Handle },
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{handle = win32.GetStdHandle(win32.STD_ERROR_HANDLE) transmute File.Handle },
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}
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stdin := ^__std_files[File_Standard.INPUT]
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stdout := ^__std_files[File_Standard.OUTPUT]
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stderr := ^__std_files[File_Standard.ERROR]
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read_entire_file :: proc(name: string) -> ([]byte, bool) {
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buf: [300]byte
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copy(buf[:], name as []byte)
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f, file_ok := open(name)
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if !file_ok {
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return nil, false
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}
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defer close(^f)
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length: i64
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file_size_ok := win32.GetFileSizeEx(f.handle.p as win32.HANDLE, ^length) != 0
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if !file_size_ok {
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return nil, false
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}
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data := new_slice(u8, length)
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if data.data == nil {
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return nil, false
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}
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single_read_length: i32
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total_read: i64
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for total_read < length {
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remaining := length - total_read
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to_read: u32
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MAX :: 1<<32-1
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if remaining <= MAX {
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to_read = remaining as u32
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} else {
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to_read = MAX
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}
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win32.ReadFile(f.handle.p as win32.HANDLE, ^data[total_read], to_read, ^single_read_length, nil)
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if single_read_length <= 0 {
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free(data.data)
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return nil, false
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}
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total_read += single_read_length as i64
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}
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return data, true
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}
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heap_alloc :: proc(size: int) -> rawptr {
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return win32.HeapAlloc(win32.GetProcessHeap(), win32.HEAP_ZERO_MEMORY, size)
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}
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heap_resize :: proc(ptr: rawptr, new_size: int) -> rawptr {
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return win32.HeapReAlloc(win32.GetProcessHeap(), win32.HEAP_ZERO_MEMORY, ptr, new_size)
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}
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heap_free :: proc(ptr: rawptr) {
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win32.HeapFree(win32.GetProcessHeap(), 0, ptr)
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}
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exit :: proc(code: int) {
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win32.ExitProcess(code as u32)
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}
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current_thread_id :: proc() -> int {
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GetCurrentThreadId :: proc() -> u32 #foreign #dll_import
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return GetCurrentThreadId() as int
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}
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