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472 lines
20 KiB
C
472 lines
20 KiB
C
#ifdef INTELLISENSE_DIRECTIVES
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# pragma once
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# include "base/debug.h"
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# include "base/strings.h"
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# include "base/thread_context.h"
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# include "base/file.h"
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#endif
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// Copyright (c) 2024 Epic Games Tools
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// Licensed under the MIT license (https://opensource.org/license/mit/)
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////////////////////////////////
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//~ rjf: System Info
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typedef struct MD_OS_SystemInfo MD_OS_SystemInfo;
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struct MD_OS_SystemInfo
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{
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MD_U32 logical_processor_count;
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MD_U64 page_size;
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MD_U64 large_page_size;
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MD_U64 allocation_granularity;
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MD_String8 machine_name;
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};
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////////////////////////////////
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//~ rjf: Process Info
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typedef struct MD_OS_ProcessInfo MD_OS_ProcessInfo;
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struct MD_OS_ProcessInfo
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{
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MD_U32 pid;
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MD_String8 binary_path;
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MD_String8 initial_path;
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MD_String8 user_program_data_path;
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MD_String8List module_load_paths;
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MD_String8List environment;
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};
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////////////////////////////////
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//~ rjf: Access Flags
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typedef MD_U32 MD_OS_AccessFlags;
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enum
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{
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MD_OS_AccessFlag_Read = (1 << 0),
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MD_OS_AccessFlag_Write = (1 << 1),
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MD_OS_AccessFlag_Execute = (1 << 2),
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MD_OS_AccessFlag_Append = (1 << 3),
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MD_OS_AccessFlag_ShareRead = (1 << 4),
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MD_OS_AccessFlag_ShareWrite = (1 << 5),
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};
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////////////////////////////////
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//~ rjf: Files
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typedef MD_U32 MD_OS_FileIterFlags;
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enum
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{
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MD_OS_FileIterFlag_SkipFolders = (1 << 0),
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MD_OS_FileIterFlag_SkipFiles = (1 << 1),
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MD_OS_FileIterFlag_SkipHiddenFiles = (1 << 2),
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MD_OS_FileIterFlag_Done = (1 << 31),
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};
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typedef struct MD_OS_FileIter MD_OS_FileIter;
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struct MD_OS_FileIter
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{
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MD_OS_FileIterFlags flags;
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MD_U8 memory[800];
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};
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typedef struct MD_OS_FileInfo MD_OS_FileInfo;
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struct MD_OS_FileInfo
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{
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MD_String8 name;
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MD_FileProperties props;
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};
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// nick: on-disk file identifier
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typedef struct MD_OS_FileID MD_OS_FileID;
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struct MD_OS_FileID
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{
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MD_U64 v[3];
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};
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////////////////////////////////
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//~ rjf: Process Launch Parameters
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typedef struct MD_OS_ProcessLaunchParams MD_OS_ProcessLaunchParams;
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struct MD_OS_ProcessLaunchParams
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{
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MD_String8List cmd_line;
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MD_String8 path;
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MD_String8List env;
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MD_B32 inherit_env;
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MD_B32 consoleless;
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};
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////////////////////////////////
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//~ rjf: Handle Type
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typedef struct MD_OS_Handle MD_OS_Handle;
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struct MD_OS_Handle
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{
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MD_U64 u64[1];
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};
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typedef struct MD_OS_HandleNode MD_OS_HandleNode;
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struct MD_OS_HandleNode
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{
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MD_OS_HandleNode* next;
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MD_OS_Handle v;
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};
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typedef struct MD_OS_HandleList MD_OS_HandleList;
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struct MD_OS_HandleList
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{
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MD_OS_HandleNode* first;
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MD_OS_HandleNode* last;
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MD_U64 count;
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};
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typedef struct MD_OS_HandleArray MD_OS_HandleArray;
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struct MD_OS_HandleArray
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{
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MD_OS_Handle* v;
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MD_U64 count;
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};
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////////////////////////////////
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//~ rjf: Globally Unique IDs
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typedef struct MD_OS_Guid MD_OS_Guid;
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struct MD_OS_Guid
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{
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MD_U32 data1;
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MD_U16 data2;
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MD_U16 data3;
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MD_U8 data4[8];
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};
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md_static_assert(size_of(MD_OS_Guid) == 16, md_os_guid_check);
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////////////////////////////////
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//~ rjf: Thread Types
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typedef void MD_OS_ThreadFunctionType(void *ptr);
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////////////////////////////////
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//~ rjf: Handle Type Functions (Helpers, Implemented Once)
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md_force_inline MD_OS_Handle md_os_handle_zero (void) { MD_OS_Handle handle = {0}; return handle; }
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md_force_inline MD_B32 md_os_handle_match(MD_OS_Handle a, MD_OS_Handle b) { return a.u64[0] == b.u64[0]; }
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void md_os_handle_list_push__arena (MD_Arena* arena, MD_OS_HandleList* handles, MD_OS_Handle handle);
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void md_os_handle_list_push__ainfo (MD_AllocatorInfo ainfo, MD_OS_HandleList* handles, MD_OS_Handle handle);
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MD_OS_HandleArray md_os_handle_array_from_list__arena(MD_Arena* arena, MD_OS_HandleList* list);
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MD_OS_HandleArray md_os_handle_array_from_list__ainfo(MD_AllocatorInfo ainfo, MD_OS_HandleList* list);
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#define md_os_handle_ist_push(arena, handles, handle) _Generic(allocator, MD_Arena*: md_os_handle_list_push__arena, MD_AllocatorInfo: md_os_handle_list_push__ainfo, default: md_assert_generic_sel_fail) md_generic_call(allocator, handles, handle)
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#define md_os_handle_array_from_list(allocator, list) _Generic(allocator, MD_Arena*: md_os_handle_array_from_list__arena, MD_AllocatorInfo: md_os_handle_list_push__ainfo, default: md_assert_generic_sel_fail) md_generic_call(allocator, list)
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md_force_inline void md_os_handle_list_push__arena (MD_Arena* arena, MD_OS_HandleList* handles, MD_OS_Handle handle) { md_os_handle_list__push_ainfo (md_arena_allocator(arena), handles, handle); }
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md_force_inline MD_OS_HandleArray md_os_handle_array_from_list__arena(MD_Arena* arena, MD_OS_HandleList* list) { return md_os_handle_array_from_list__ainfo(md_arena_allocator(arena), list); }
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inline void
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md_os_handle_list_alloc(MD_AllocatorInfo ainfo, MD_OS_HandleList* handles, MD_OS_Handle handle) {
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MD_OS_HandleNode* n = md_alloc_array(ainfo, MD_OS_HandleNode, 1);
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n->v = handle;
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md_sll_queue_push(handles->first, handles->last, n);
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handles->count += 1;
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}
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inline MD_OS_HandleArray
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md_os_handle_array_from_list_alloc(MD_AllocatorInfo ainfo, MD_OS_HandleList* list) {
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MD_OS_HandleArray result = {0};
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result.count = list->count;
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result.v = md_alloc_array_no_zero(ainfo, MD_OS_Handle, result.count);
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MD_U64 idx = 0;
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for(MD_OS_HandleNode* n = list->first; n != 0; n = n->next, idx += 1) {
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result.v[idx] = n->v;
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}
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return result;
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}
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////////////////////////////////
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//~ rjf: Command Line Argc/Argv Helper (Helper, Implemented Once)
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MD_String8List md_os_string_list_from_argcv__arena(MD_Arena* arena, int argc, char** argv);
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MD_String8List md_os_string_list_from_argcv__ainfo(MD_AllocatorInfo ainfo, int argc, char** argv);
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inline MD_String8List
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md_os_string_list_from_argcv__ainfo(MD_AllocatorInfo ainfo, int argc, char** argv) {
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MD_String8List result = {0};
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for(int i = 0; i < argc; i += 1)
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{
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MD_String8 str = md_str8_cstring(argv[i]);
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md_str8_list_push(ainfo, &result, str);
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}
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return result;
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}
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#define md_os_string_list_from_argcv(allocator, argc, argv) _Generic(allocator, MD_Arena*: md_os_string_list_from_argcv__arena, MD_AllocatorInfo: md_os_string_list_from_argcv__ainfo, default: md_assert_generic_sel_fail) md_generic_call(allocator, argc, argv)
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md_force_inline MD_String8List md_os_string_list_from_argcv__arena(MD_Arena* arena, int argc, char** argv) { return md_os_string_list_from_argcv__ainfo(md_arena_allocator(arena), argc, argv); }
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////////////////////////////////
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//~ rjf: @md_os_hooks File System (Implemented Per-OS)
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//- rjf: files
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MD_API MD_OS_Handle md_os_file_open (MD_OS_AccessFlags flags, MD_String8 path);
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MD_API void md_os_file_close (MD_OS_Handle file);
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MD_API MD_U64 md_os_file_read (MD_OS_Handle file, MD_Rng1U64 rng, void *out_data);
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MD_API MD_U64 md_os_file_write (MD_OS_Handle file, MD_Rng1U64 rng, void *data);
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MD_API MD_B32 md_os_file_set_times (MD_OS_Handle file, MD_DateTime time);
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MD_API MD_FileProperties md_os_properties_from_file (MD_OS_Handle file);
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MD_API MD_OS_FileID md_os_id_from_file (MD_OS_Handle file);
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MD_API MD_B32 md_os_delete_file_at_path (MD_String8 path);
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MD_API MD_B32 md_os_copy_file_path (MD_String8 dst, MD_String8 src);
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MD_API MD_B32 md_os_file_path_exists (MD_String8 path);
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MD_API MD_FileProperties md_os_properties_from_file_path (MD_String8 path);
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MD_API MD_String8 md_os_full_path_from_path__arena(MD_Arena* arena, MD_String8 path);
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MD_API MD_String8 md_os_full_path_from_path__ainfo(MD_AllocatorInfo arena, MD_String8 path);
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#define md_os_full_path_from_path(allocator, path) _Generic(allocator, MD_Arena*: md_os_full_path_from_path__arena, MD_AllocatorInfo: md_os_full_path_from_path__ainfo, default: md_assert_generic_sel_fail) md_generic_call(allocator, path)
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md_force_inline MD_String8 md_os_full_path_from_path__arena(MD_Arena* arena, MD_String8 path) { return md_os_full_path_from_path__ainfo(md_arena_allocator(arena), path); }
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//- rjf: file maps
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MD_API MD_OS_Handle md_os_file_map_open (MD_OS_AccessFlags flags, MD_OS_Handle file);
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MD_API void md_os_file_map_close (MD_OS_Handle map);
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MD_API void* md_os_file_map_view_open (MD_OS_Handle map, MD_OS_AccessFlags flags, MD_Rng1U64 range);
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MD_API void md_os_file_map_view_close(MD_OS_Handle map, void* ptr, MD_Rng1U64 range);
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//- rjf: directory iteration
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MD_OS_FileIter* md_os_file_iter_begin__arena(MD_Arena* arena, MD_String8 path, MD_OS_FileIterFlags flags);
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MD_API MD_OS_FileIter* md_os_file_iter_begin__ainfo(MD_AllocatorInfo ainfo, MD_String8 path, MD_OS_FileIterFlags flags);
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MD_B32 md_os_file_iter_next__arena (MD_Arena* arena, MD_OS_FileIter* iter, MD_OS_FileInfo* info_out);
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MD_API MD_B32 md_os_file_iter_next__ainfo (MD_AllocatorInfo arena, MD_OS_FileIter* iter, MD_OS_FileInfo* info_out);
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MD_API void md_os_file_iter_end ( MD_OS_FileIter* iter);
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#define md_os_file_iter_begin(allocator, path, flags) _Generic(allocator, MD_Arena*: md_os_file_iter_begin__arena, MD_AllocatorInfo: md_os_file_iter_begin__ainfo, default: md_assert_generic_sel_fail) md_generic_call(allocator, path)
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#define md_os_file_iter_next(allocator, iter, info_out) _Generic(allocator, MD_Arena*: md_os_file_iter_next__arena, MD_AllocatorInfo: md_os_file_iter_next__ainfo, default: md_assert_generic_sel_fail) md_generic_call(allocator, path)
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md_force_inline MD_OS_FileIter* md_os_file_iter_begin__arena(MD_Arena* arena, MD_String8 path, MD_OS_FileIterFlags flags) { reutrn (); }
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md_force_inline MD_B32 md_os_file_iter_next__arena (MD_Arena* arena, MD_OS_FileIter* iter, MD_OS_FileInfo* info_out) { reutrn (); }
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//- rjf: directory creation
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MD_API MD_B32 md_os_make_directory(MD_String8 path);
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////////////////////////////////
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//~ rjf: Filesystem Helpers (Helpers, Implemented Once)
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MD_API MD_B32 md_os_write_data_to_file_path (MD_String8 path, MD_String8 data);
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MD_API MD_B32 md_os_write_data_list_to_file_path(MD_String8 path, MD_String8List list);
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MD_API MD_B32 md_os_append_data_to_file_path (MD_String8 path, MD_String8 data);
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MD_OS_FileID md_os_id_from_file_path (MD_String8 path);
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MD_S64 md_os_file_id_compare (MD_OS_FileID a, MD_OS_FileID b);
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MD_String8 md_os_data_from_file_path__arena (MD_Arena* arena, MD_String8 path);
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MD_String8 md_os_data_from_file_path__ainfo (MD_AllocatorInfo ainfo, MD_String8 path);
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MD_API MD_String8 md_os_string_from_file_range__arena(MD_Arena* arena, MD_OS_Handle file, MD_Rng1U64 range);
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MD_API MD_String8 md_os_string_from_file_range__ainfo(MD_AllocatorInfo ainfo, MD_OS_Handle file, MD_Rng1U64 range);
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#define md_os_data_from_file_path(allocator, path) _Generic(allocator, MD_Arena*: md_os_data_from_file_path__arena, MD_AllocatorInfo: md_os_data_from_file_path__ainfo, default: md_assert_generic_sel_fail) md_generic_call(allocator, path)
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#define md_os_string_from_file_range(allocator, file, range) _Generic(allocator, MD_Arena*: md_os_string_from_file_range__arena, MD_AllocatorInfo: md_os_string_from_file_range__ainfo, default: md_assert_generic_sel_fail) md_generic_call(allocator, file, range)
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md_force_inline MD_String8 md_os_data_from_file_path__arena(MD_Arena* arena, MD_String8 path) { return md_os_data_from_file_path__ainfo(md_arena_allocator(arena), path); }
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inline MD_String8
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md_os_data_from_file_path__ainfo(MD_AllocatorInfo ainfo, MD_String8 path)
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{
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MD_OS_Handle file = md_os_file_open(MD_OS_AccessFlag_Read | MD_OS_AccessFlag_ShareRead, path);
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MD_FileProperties props = md_os_properties_from_file(file);
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MD_String8 data = md_os_string_from_file_range(ainfo, file, md_r1u64(0, props.size));
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md_os_file_close(file);
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return data;
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}
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inline MD_OS_FileID
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md_os_id_from_file_path(MD_String8 path) {
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MD_OS_Handle file = md_os_file_open(MD_OS_AccessFlag_Read | MD_OS_AccessFlag_ShareRead, path);
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MD_OS_FileID id = md_os_id_from_file(file);
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md_os_file_close(file);
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return id;
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}
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inline MD_S64 md_os_file_id_compare(MD_OS_FileID a, MD_OS_FileID b) { MD_S64 cmp = md_memory_compare((void*)&a.v[0], (void*)&b.v[0], sizeof(a.v)); return cmp; }
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////////////////////////////////
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//~ rjf: GUID Helpers (Helpers, Implemented Once)
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MD_String8 md_os_string_from_guid__arena(MD_Arena* arena, MD_OS_Guid guid);
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MD_String8 md_os_string_from_guid__ainfo(MD_AllocatorInfo ainfo, MD_OS_Guid guid);
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#define md_os_string_from_guid(allocator, guid) _Generic(allocator, MD_Arena*: md_os_string_from_guid__arena, MD_AllocatorInfo: md_os_string_from_guid__ainfo, default: md_assert_generic_sel_fail) md_generic_call(allocator, guid)
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md_force_inline MD_String8 md_os_string_from_guid__arena(MD_Arena* arena, MD_OS_Guid guid) { md_os_string_from_guid__ainfo(md_arena_allocator(arena), guid); }
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inline MD_String8
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md_os_string_from_guid_alloc(MD_AllocatorInfo ainfo, MD_OS_Guid guid) {
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MD_String8 result = md_str8f(ainfo,
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"%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X",
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guid.data1,
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guid.data2,
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guid.data3,
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guid.data4[0],
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guid.data4[1],
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guid.data4[2],
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guid.data4[3],
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guid.data4[4],
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guid.data4[5],
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guid.data4[6],
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guid.data4[7]
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);
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return result;
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}
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////////////////////////////////
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//~ rjf: @md_os_hooks System/Process Info (Implemented Per-OS)
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MD_API MD_OS_SystemInfo* md_os_get_system_info (void);
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MD_API MD_OS_ProcessInfo* md_os_get_process_info(void);
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MD_String8 md_os_get_current_path__arena(MD_Arena* arena);
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MD_String8 md_os_get_current_path__ainfo(MD_AllocatorInfo arena);
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#define md_os_get_current_path(allocator) _Generic(allocator, MD_Arena*: md_os_get_current_path__arena, MD_AllocatorInfo: md_os_get_current_path__ainfo) md_generic_call(allocator)
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md_force_inline MD_String8 md_os_get_current_path__arena(MD_Arena* arena) { return md_os_get_current_path__ainfo(md_arena_allocator(arena)); }
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////////////////////////////////
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//~ rjf: @md_os_hooks Memory Allocation (Implemented Per-OS)
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//- rjf: basic
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void* md_os_reserve ( MD_U64 size);
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MD_B32 md_os_commit (void* ptr, MD_U64 size);
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void md_os_decommit(void* ptr, MD_U64 size);
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void md_os_release (void* ptr, MD_U64 size);
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//- rjf: large pages
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void* md_os_reserve_large( MD_U64 size);
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MD_B32 md_os_commit_large (void* ptr, MD_U64 size);
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////////////////////////////////
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//~ rjf: @md_os_hooks Thread Info (Implemented Per-OS)
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MD_U32 md_os_tid(void);
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MD_API void md_os_set_thread_name(MD_String8 string);
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////////////////////////////////
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//~ rjf: @md_os_hooks Aborting (Implemented Per-OS)
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MD_API void md_os_abort(MD_S32 exit_code);
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////////////////////////////////
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//~ rjf: @md_os_hooks Shared Memory (Implemented Per-OS)
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MD_API MD_OS_Handle md_os_shared_memory_alloc (MD_U64 size, MD_String8 name);
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MD_API MD_OS_Handle md_os_shared_memory_open (MD_String8 name);
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MD_API void md_os_shared_memory_close (MD_OS_Handle handle);
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MD_API void* md_os_shared_memory_view_open (MD_OS_Handle handle, MD_Rng1U64 range);
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MD_API void md_os_shared_memory_view_close(MD_OS_Handle handle, void* ptr, MD_Rng1U64 range);
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////////////////////////////////
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//~ rjf: @md_os_hooks Time (Implemented Per-OS)
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MD_API MD_U64 md_os_now_microseconds (void);
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MD_API MD_U32 md_os_now_unix (void);
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MD_API MD_DateTime md_os_now_universal_time (void);
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MD_API MD_DateTime md_os_universal_time_from_local(MD_DateTime* local_time);
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MD_API MD_DateTime md_os_local_time_from_universal(MD_DateTime* universal_time);
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MD_API void md_os_sleep_milliseconds (MD_U32 msec);
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////////////////////////////////
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//~ rjf: @md_os_hooks Child Processes (Implemented Per-OS)
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MD_API MD_OS_Handle md_os_process_launch(MD_OS_ProcessLaunchParams* params);
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MD_API MD_B32 md_os_process_join (MD_OS_Handle handle, MD_U64 endt_us);
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MD_API void md_os_process_detach(MD_OS_Handle handle);
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////////////////////////////////
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//~ rjf: @md_os_hooks Threads (Implemented Per-OS)
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MD_API MD_OS_Handle md_os_thread_launch(MD_OS_ThreadFunctionType* func, void* ptr, void* params);
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MD_API MD_B32 md_os_thread_join (MD_OS_Handle handle, MD_U64 endt_us);
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MD_API void md_os_thread_detach(MD_OS_Handle handle);
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////////////////////////////////
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//~ rjf: @md_os_hooks Synchronization Primitives (Implemented Per-OS)
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//- rjf: recursive mutexes
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MD_API MD_OS_Handle md_os_mutex_alloc (void);
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MD_API void md_os_mutex_release(MD_OS_Handle mutex);
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MD_API void md_os_mutex_take (MD_OS_Handle mutex);
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MD_API void md_os_mutex_drop (MD_OS_Handle mutex);
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//- rjf: reader/writer mutexes
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MD_API MD_OS_Handle md_os_rw_mutex_alloc (void);
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MD_API void md_os_rw_mutex_release(MD_OS_Handle rw_mutex);
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MD_API void md_os_rw_mutex_take_r (MD_OS_Handle mutex);
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MD_API void md_os_rw_mutex_drop_r (MD_OS_Handle mutex);
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MD_API void md_os_rw_mutex_take_w (MD_OS_Handle mutex);
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MD_API void md_os_rw_mutex_drop_w (MD_OS_Handle mutex);
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//- rjf: condition variables
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MD_API MD_OS_Handle md_os_condition_variable_alloc (void);
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MD_API void md_os_condition_variable_release(MD_OS_Handle cv);
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// returns false on timeout, true on signal, (max_wait_ms = max_U64) -> no timeout
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MD_API MD_B32 md_os_condition_variable_wait (MD_OS_Handle cv, MD_OS_Handle mutex, MD_U64 endt_us);
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MD_API MD_B32 md_os_condition_variable_wait_rw_r(MD_OS_Handle cv, MD_OS_Handle mutex_rw, MD_U64 endt_us);
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MD_API MD_B32 md_os_condition_variable_wait_rw_w(MD_OS_Handle cv, MD_OS_Handle mutex_rw, MD_U64 endt_us);
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MD_API void md_os_condition_variable_signal (MD_OS_Handle cv);
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MD_API void md_os_condition_variable_broadcast(MD_OS_Handle cv);
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//- rjf: cross-process semaphores
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MD_API MD_OS_Handle md_os_semaphore_alloc (MD_U32 initial_count, MD_U32 max_count, MD_String8 name);
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MD_API void md_os_semaphore_release(MD_OS_Handle semaphore);
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MD_API MD_OS_Handle md_os_semaphore_open (MD_String8 name);
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MD_API void md_os_semaphore_close (MD_OS_Handle semaphore);
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MD_API MD_B32 md_os_semaphore_take (MD_OS_Handle semaphore, MD_U64 endt_us);
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MD_API void md_os_semaphore_drop (MD_OS_Handle semaphore);
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//- rjf: scope macros
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#define md_os_mutex_scope(mutex) md_defer_loop( md_os_mutex_take (mutex), md_os_mutex_drop (mutex))
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#define md_os_mutex_scope_r(mutex) md_defer_loop( md_os_rw_mutex_take_r(mutex), md_os_rw_mutex_drop_r(mutex))
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#define md_os_mutex_scope_W(mutex) md_defer_loop( md_os_rw_mutex_take_w(mutex), md_os_rw_mutex_drop_w(mutex))
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#define md_os_mutex_scope_rw_promote(mutex) md_defer_loop((md_os_rw_mutex_drop_r(mutex), md_os_rw_mutex_take_w(mutex)), (md_os_rw_mutex_drop_w(mutex), md_os_rw_mutex_take_r(mutex)))
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////////////////////////////////
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//~ rjf: @md_os_hooks Dynamically-Loaded Libraries (Implemented Per-OS)
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MD_API MD_OS_Handle md_os_library_open (MD_String8 path);
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MD_API void md_os_library_close (MD_OS_Handle lib);
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MD_API MD_VoidProc* md_os_library_load_proc(MD_OS_Handle lib, MD_String8 name);
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////////////////////////////////
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//~ rjf: @md_os_hooks Safe Calls (Implemented Per-OS)
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MD_API void md_os_safe_call(MD_OS_ThreadFunctionType* func, MD_OS_ThreadFunctionType* fail_handler, void* ptr);
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////////////////////////////////
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//~ rjf: @md_os_hooks GUIDs (Implemented Per-OS)
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MD_API MD_OS_Guid md_os_make_guid(void);
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////////////////////////////////
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//~ rjf: @md_os_hooks Entry Points (Implemented Per-OS)
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// NOTE(rjf): The implementation of `md_os_core` will define low-level entry
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// points if MD_BUILD_ENTRY_DEFINING_UNIT is defined to 1. These will call
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// into the standard codebase program entry points, named "md_entry_point".
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#if MD_BUILD_ENTRY_DEFINING_UNIT
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void md_entry_point(MD_CmdLine* cmdline);
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#endif
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////////////////////////////////
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//~ Ed: Manual OS Bootstrap (Implemented Per-OS)
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typedef struct MD_OS_Context MD_OS_Context;
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struct MD_OS_Context
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{
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MD_Arena* state_arena;
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MD_Arena* entity_arena;
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MD_B32 enable_large_pages;
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};
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// OS layer initialization
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MD_API void md_os_init(MD_OS_Context* ctx, MD_TCTX* thread_ctx);
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