481 lines
12 KiB
C
481 lines
12 KiB
C
#ifndef SYS_H
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#define SYS_H
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struct tls_table;
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/* ========================== *
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* Events
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* ========================== */
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enum sys_event_kind {
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SYS_EVENT_KIND_NONE,
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SYS_EVENT_KIND_BUTTON_DOWN,
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SYS_EVENT_KIND_BUTTON_UP,
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SYS_EVENT_KIND_CURSOR_MOVE,
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SYS_EVENT_KIND_MOUSE_MOVE,
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SYS_EVENT_KIND_TEXT,
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SYS_EVENT_KIND_QUIT,
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SYS_EVENT_KIND_COUNT
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};
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enum sys_btn {
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SYS_BTN_NONE,
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SYS_BTN_M1,
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SYS_BTN_M2,
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SYS_BTN_M3,
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SYS_BTN_M4,
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SYS_BTN_M5,
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SYS_BTN_MWHEELUP,
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SYS_BTN_MWHEELDOWN,
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SYS_BTN_ESC,
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SYS_BTN_F1,
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SYS_BTN_F2,
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SYS_BTN_F3,
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SYS_BTN_F4,
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SYS_BTN_F5,
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SYS_BTN_F6,
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SYS_BTN_F7,
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SYS_BTN_F8,
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SYS_BTN_F9,
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SYS_BTN_F10,
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SYS_BTN_F11,
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SYS_BTN_F12,
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SYS_BTN_F13,
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SYS_BTN_F14,
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SYS_BTN_F15,
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SYS_BTN_F16,
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SYS_BTN_F17,
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SYS_BTN_F18,
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SYS_BTN_F19,
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SYS_BTN_F20,
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SYS_BTN_F21,
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SYS_BTN_F22,
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SYS_BTN_F23,
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SYS_BTN_F24,
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SYS_BTN_GRAVE_ACCENT,
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SYS_BTN_0,
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SYS_BTN_1,
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SYS_BTN_2,
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SYS_BTN_3,
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SYS_BTN_4,
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SYS_BTN_5,
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SYS_BTN_6,
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SYS_BTN_7,
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SYS_BTN_8,
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SYS_BTN_9,
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SYS_BTN_MINUS,
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SYS_BTN_EQUAL,
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SYS_BTN_BACKSPACE,
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SYS_BTN_DELETE,
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SYS_BTN_TAB,
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SYS_BTN_A,
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SYS_BTN_B,
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SYS_BTN_C,
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SYS_BTN_D,
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SYS_BTN_E,
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SYS_BTN_F,
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SYS_BTN_G,
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SYS_BTN_H,
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SYS_BTN_I,
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SYS_BTN_J,
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SYS_BTN_K,
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SYS_BTN_L,
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SYS_BTN_M,
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SYS_BTN_N,
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SYS_BTN_O,
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SYS_BTN_P,
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SYS_BTN_Q,
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SYS_BTN_R,
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SYS_BTN_S,
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SYS_BTN_T,
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SYS_BTN_U,
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SYS_BTN_V,
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SYS_BTN_W,
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SYS_BTN_X,
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SYS_BTN_Y,
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SYS_BTN_Z,
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SYS_BTN_SPACE,
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SYS_BTN_ENTER,
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SYS_BTN_CTRL,
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SYS_BTN_SHIFT,
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SYS_BTN_ALT,
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SYS_BTN_UP,
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SYS_BTN_LEFT,
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SYS_BTN_DOWN,
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SYS_BTN_RIGHT,
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SYS_BTN_PAGE_UP,
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SYS_BTN_PAGE_DOWN,
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SYS_BTN_HOME,
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SYS_BTN_END,
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SYS_BTN_FORWARD_SLASH,
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SYS_BTN_PERIOD,
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SYS_BTN_COMMA,
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SYS_BTN_QUOTE,
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SYS_BTN_LEFT_BRACKET,
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SYS_BTN_RIGHT_BRACKET,
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SYS_BTN_INSERT,
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SYS_BTN_SEMICOLON,
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SYS_BTN_COUNT
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};
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struct sys_event {
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enum sys_event_kind kind;
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/* SYS_EVENT_KIND_BUTTON_DOWN */
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/* SYS_EVENT_KIND_BUTTON_UP */
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enum sys_btn button;
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b32 is_repeat;
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/* SYS_EVENT_KIND_TEXT */
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u32 text_character;
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/* SYS_EVENT_KIND_CURSOR_MOVE */
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struct v2 cursor_position;
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/* SYS_EVENT_KIND_MOUSE_MOVE */
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struct v2 mouse_delta;
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};
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struct sys_event_array {
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u64 count;
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struct sys_event *events;
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};
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/* ========================== *
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* Memory
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* ========================== */
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/* Reserve a continuous block of virtual address space. Shouldn't be
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* read / written to until memory is committed.
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* NOTE: Guaranteed to be 16 byte aligned. */
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void *sys_memory_reserve(u64 size);
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/* Release a continuous block of virtual address space. Before releasing,
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* decommit any committed memory within the reserved space to be safe. */
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void sys_memory_release(void *address);
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/* Commit a region of reserved address space to make it readable / writable */
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void *sys_memory_commit(void *address, u64 size);
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/* Decommit a region of committed memory (does not release the address space) */
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void sys_memory_decommit(void *address, u64 size);
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/* ========================== *
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* File system
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*
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* NOTE: File paths use forward slash '/' as delimiter
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* ========================== */
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struct sys_file {
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u64 handle;
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};
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struct string sys_get_write_path(struct arena *arena);
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b32 sys_is_file(struct string path);
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b32 sys_is_dir(struct string path);
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void sys_mkdir(struct string path);
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struct sys_file sys_file_open_read(struct string path);
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struct sys_file sys_file_open_write(struct string path);
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struct sys_file sys_file_open_append(struct string path);
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void sys_file_close(struct sys_file file);
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struct buffer sys_file_read_all(struct arena *arena, struct sys_file file);
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void sys_file_write(struct sys_file file, struct buffer data);
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u64 sys_file_size(struct sys_file file);
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/* ========================== *
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* File map
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* ========================== */
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struct sys_file_map {
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struct buffer mapped_memory;
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u64 handle;
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};
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struct sys_file_map sys_file_map_open_read(struct sys_file file);
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void sys_file_map_close(struct sys_file_map map);
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struct buffer sys_file_map_data(struct sys_file_map map);
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/* ========================== *
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* Dir iter
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* ========================== */
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struct sys_file_filter_result {
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struct string filename;
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b32 is_dir;
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};
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struct sys_file_filter {
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struct sys_file_filter_result info;
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u64 handle;
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};
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/* Iterate all files in a directory */
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struct sys_file_filter sys_file_filter_begin(struct arena *arena, struct string pattern);
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b32 sys_file_filter_next(struct arena *arena, struct sys_file_filter *iter);
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void sys_file_filter_end(struct sys_file_filter *iter);
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/* ========================== *
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* Window
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* ========================== */
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/* NOTE:
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* A window object can only be interacted with by the thread that created it.
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* This restriction is in place because of how Win32 works, IE you cannot
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* create a Win32 window in one thread and process its messages on another. */
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enum sys_window_settings_flags {
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SYS_WINDOW_SETTINGS_FLAG_NONE = 0x00,
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SYS_WINDOW_SETTINGS_FLAG_FULLSCREEN = 0x01,
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/* NOTE: Both maximized and minimized can be true at the same time. This
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* means that the window was minimized from a maximized state, and will
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* restore to being maximized once it's un-minimized. */
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SYS_WINDOW_SETTINGS_FLAG_MAXIMIZED = 0x02,
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SYS_WINDOW_SETTINGS_FLAG_MINIMIZED = 0x04
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};
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enum sys_window_flags {
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SYS_WINDOW_FLAG_NONE = 0x00,
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SYS_WINDOW_FLAG_SHOWING = 0x02
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};
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#define SYS_WINDOW_EVENT_CALLBACK_DEF(name, arg_name) void name(struct sys_event arg_name)
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typedef SYS_WINDOW_EVENT_CALLBACK_DEF(sys_window_event_callback, event);
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/* sys_window_update_settings should be used when altering settings values */
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struct sys_window_settings {
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char title[256];
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u32 flags;
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/* NOTE: Below fields are NOT representative of actual window dimensions.
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* These values represent the window dimensions when the window is not
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* maximized, minimized, or fullscreen. AKA 'floating'. Use
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* `sys_window_get_size` for rendering instead. */
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i32 floating_x;
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i32 floating_y;
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i32 floating_width;
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i32 floating_height;
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};
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struct sys_window {
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u64 handle;
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};
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struct sys_window sys_window_alloc(void);
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void sys_window_release(struct sys_window *sys_window);
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void sys_window_register_event_callback(struct sys_window *sys_window, sys_window_event_callback *func);
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void sys_window_unregister_event_callback(struct sys_window *sys_window, sys_window_event_callback *func);
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void sys_window_update_settings(struct sys_window *sys_window, struct sys_window_settings *settings);
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struct sys_window_settings sys_window_get_settings(struct sys_window *sys_window);
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void sys_window_show(struct sys_window *sys_window);
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struct v2 sys_window_get_size(struct sys_window *sys_window);
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struct v2 sys_window_get_monitor_size(struct sys_window *sys_window);
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/* Returns a platform specific representation of the window. E.g. `hwnd` on win32. */
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u64 sys_window_get_internal_handle(struct sys_window *sys_window);
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void sys_window_cursor_set_pos(struct sys_window *sys_window, struct v2 pos);
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void sys_window_cursor_show(struct sys_window *sys_window);
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void sys_window_cursor_hide(struct sys_window *sys_window);
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void sys_window_cursor_enable_clip(struct sys_window *sys_window, struct rect bounds);
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void sys_window_cursor_disable_clip(struct sys_window *sys_window);
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/* ========================== *
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* Mutex
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* ========================== */
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struct sys_mutex {
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u64 handle;
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#if RTC
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u64 owner_tid;
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# if OS_WINDOWS
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wchar_t *owner_name;
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# else
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char *owner_name;
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# endif
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#endif
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};
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struct sys_mutex sys_mutex_alloc(void);
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void sys_mutex_release(struct sys_mutex *mutex);
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void sys_mutex_lock(struct sys_mutex *mutex);
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void sys_mutex_unlock(struct sys_mutex *mutex);
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#if RTC
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void sys_mutex_assert_locked(struct sys_mutex *mutex);
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#else
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# define sys_mutex_assert_locked(m)
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#endif
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/* ========================== *
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* RW Mutex
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* ========================== */
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struct sys_rw_mutex {
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u64 handle;
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#if RTC
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struct atomic_i64 num_shared;
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u64 owner_tid;
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# if _WIN32
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wchar_t *owner_name;
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# else
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char *owner_name;
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# endif
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#endif
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};
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struct sys_rw_mutex sys_rw_mutex_alloc(void);
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void sys_rw_mutex_release(struct sys_rw_mutex *mutex);
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void sys_rw_mutex_lock_exclusive(struct sys_rw_mutex *mutex);
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void sys_rw_mutex_unlock_exclusive(struct sys_rw_mutex *mutex);
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void sys_rw_mutex_lock_shared(struct sys_rw_mutex *mutex);
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void sys_rw_mutex_unlock_shared(struct sys_rw_mutex *mutex);
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#if RTC
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void sys_rw_mutex_assert_locked_exclusive(struct sys_rw_mutex *mutex);
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#else
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# define sys_rw_mutex_assert_locked_exclusive(m)
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#endif
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/* ========================== *
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* Condition variable
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* ========================== */
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struct sys_condition_variable {
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u64 handle;
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#if RTC
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struct atomic_i64 num_sleepers;
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#endif
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};
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struct sys_condition_variable sys_condition_variable_alloc(void);
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void sys_condition_variable_release(struct sys_condition_variable *cv);
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void sys_condition_variable_wait(struct sys_condition_variable *cv, struct sys_mutex *mutex);
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void sys_condition_variable_wait_time(struct sys_condition_variable *cv, struct sys_mutex *mutex, f64 seconds);
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void sys_condition_variable_signal(struct sys_condition_variable *cv);
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/* ========================== *
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* Semaphore
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* ========================== */
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struct sys_semaphore {
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u64 handle;
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};
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struct sys_semaphore sys_semaphore_alloc(u32 max_count);
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void sys_semaphore_release(struct sys_semaphore *semaphore);
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void sys_semaphore_wait(struct sys_semaphore *semaphore);
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void sys_semaphore_signal(struct sys_semaphore *semaphore, u32 count);
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/* ========================== *
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* Thread local storage
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* ========================== */
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struct tls_table *sys_thread_get_tls(void);
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/* ========================== *
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* Threads
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* ========================== */
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#define SYS_THREAD_STACK_SIZE MEGABYTE(2)
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#define SYS_THREAD_FUNC_DEF(name, arg_name) void name(void *arg_name)
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typedef SYS_THREAD_FUNC_DEF(sys_thread_func, data);
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struct sys_thread {
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u64 handle;
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};
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/* Creates and starts running the thread in the supplied `thread_func` */
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struct sys_thread sys_thread_init(
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sys_thread_func *thread_func,
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void *thread_data, /* Passed to thread_func */
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struct string thread_name
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);
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/* Halt and wait for a thread to finish */
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void sys_thread_join(struct sys_thread *thread);
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/* Gets the current executing thread's ID */
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u32 sys_thread_id(void);
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/* Asserts that the current thread matches the supplied thread id (tid) */
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#if RTC
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void sys_thread_assert(u32 tid);
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#else
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# define sys_thread_assert(tid)
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#endif
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/* ========================== *
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* Message box
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* ========================== */
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enum sys_message_box_kind {
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SYS_MESSAGE_BOX_KIND_OK,
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SYS_MESSAGE_BOX_KIND_WARNING,
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SYS_MESSAGE_BOX_KIND_ERROR,
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SYS_MESSAGE_BOX_KIND_FATAL
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};
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void sys_message_box(enum sys_message_box_kind kind, struct string message);
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/* ========================== *
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* Time
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* ========================== */
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struct sys_local_time_info {
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u32 year;
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u32 month;
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u32 dayOfWeek;
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u32 day;
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u32 hour;
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u32 minute;
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u32 second;
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u32 milliseconds;
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};
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typedef u64 sys_timestamp_t;
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sys_timestamp_t sys_timestamp(void);
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f64 sys_timestamp_seconds(sys_timestamp_t ts);
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struct sys_local_time_info sys_local_time(void);
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/* ========================== *
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* Util
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* ========================== */
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u32 sys_num_logical_processors(void);
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void sys_exit(void);
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u32 sys_rand_u32(void);
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/* Implementation of this function should have minimal side effects (e.g. avoid
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* memory allocation), since it may be called in circumstances where those side
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* effects are non-functioning. */
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void sys_panic_raw(char *msg_cstr);
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void sys_panic(struct string msg);
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/* ========================== *
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* Sleep
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* ========================== */
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void sys_sleep(f64 seconds);
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#endif
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