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https://github.com/Ed94/metadesk.git
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472 lines
18 KiB
C
472 lines
18 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 OS_SystemInfo OS_SystemInfo;
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struct OS_SystemInfo
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{
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U32 logical_processor_count;
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U64 page_size;
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U64 large_page_size;
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U64 allocation_granularity;
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String8 machine_name;
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};
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////////////////////////////////
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//~ rjf: Process Info
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typedef struct OS_ProcessInfo OS_ProcessInfo;
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struct OS_ProcessInfo
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{
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U32 pid;
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String8 binary_path;
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String8 initial_path;
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String8 user_program_data_path;
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String8List module_load_paths;
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String8List environment;
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};
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////////////////////////////////
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//~ rjf: Access Flags
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typedef U32 OS_AccessFlags;
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enum
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{
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OS_AccessFlag_Read = (1 << 0),
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OS_AccessFlag_Write = (1 << 1),
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OS_AccessFlag_Execute = (1 << 2),
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OS_AccessFlag_Append = (1 << 3),
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OS_AccessFlag_ShareRead = (1 << 4),
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OS_AccessFlag_ShareWrite = (1 << 5),
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};
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////////////////////////////////
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//~ rjf: Files
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typedef U32 OS_FileIterFlags;
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enum
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{
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OS_FileIterFlag_SkipFolders = (1 << 0),
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OS_FileIterFlag_SkipFiles = (1 << 1),
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OS_FileIterFlag_SkipHiddenFiles = (1 << 2),
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OS_FileIterFlag_Done = (1 << 31),
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};
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typedef struct OS_FileIter OS_FileIter;
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struct OS_FileIter
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{
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OS_FileIterFlags flags;
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U8 memory[800];
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};
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typedef struct OS_FileInfo OS_FileInfo;
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struct OS_FileInfo
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{
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String8 name;
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FileProperties props;
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};
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// nick: on-disk file identifier
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typedef struct OS_FileID OS_FileID;
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struct OS_FileID
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{
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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 OS_ProcessLaunchParams OS_ProcessLaunchParams;
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struct OS_ProcessLaunchParams
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{
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String8List cmd_line;
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String8 path;
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String8List env;
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B32 inherit_env;
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B32 consoleless;
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};
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////////////////////////////////
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//~ rjf: Handle Type
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typedef struct OS_Handle OS_Handle;
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struct OS_Handle
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{
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U64 u64[1];
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};
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typedef struct OS_HandleNode OS_HandleNode;
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struct OS_HandleNode
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{
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OS_HandleNode* next;
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OS_Handle v;
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};
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typedef struct OS_HandleList OS_HandleList;
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struct OS_HandleList
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{
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OS_HandleNode* first;
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OS_HandleNode* last;
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U64 count;
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};
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typedef struct OS_HandleArray OS_HandleArray;
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struct OS_HandleArray
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{
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OS_Handle* v;
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U64 count;
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};
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////////////////////////////////
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//~ rjf: Globally Unique IDs
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typedef struct OS_Guid OS_Guid;
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struct OS_Guid
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{
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U32 data1;
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U16 data2;
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U16 data3;
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U8 data4[8];
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};
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md_static_assert(size_of(OS_Guid) == 16, os_guid_check);
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////////////////////////////////
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//~ rjf: Thread Types
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typedef void OS_ThreadFunctionType(void *ptr);
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////////////////////////////////
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//~ rjf: Handle Type Functions (Helpers, Implemented Once)
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force_inline OS_Handle os_handle_zero (void) { OS_Handle handle = {0}; return handle; }
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force_inline B32 os_handle_match(OS_Handle a, OS_Handle b) { return a.u64[0] == b.u64[0]; }
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void os_handle_list_push__arena (Arena* arena, OS_HandleList* handles, OS_Handle handle);
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void os_handle_list_push__ainfo (AllocatorInfo ainfo, OS_HandleList* handles, OS_Handle handle);
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OS_HandleArray os_handle_array_from_list__arena(Arena* arena, OS_HandleList* list);
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OS_HandleArray os_handle_array_from_list__ainfo(AllocatorInfo ainfo, OS_HandleList* list);
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#define os_handle_ist_push(arena, handles, handle) _Generic(allocator, Arena*: os_handle_list_push__arena, AllocatorInfo: os_handle_list_push__ainfo, default: assert_generic_sel_fail) generic_call(allocator, handles, handle)
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#define os_handle_array_from_list(allocator, list) _Generic(allocator, Arena*: os_handle_array_from_list__arena, AllocatorInfo: os_handle_list_push__ainfo, default: assert_generic_sel_fail) generic_call(allocator, list)
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force_inline void os_handle_list_push__arena (Arena* arena, OS_HandleList* handles, OS_Handle handle) { os_handle_list__push_ainfo (arena_allocator(arena), handles, handle); }
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force_inline OS_HandleArray os_handle_array_from_list__arena(Arena* arena, OS_HandleList* list) { return os_handle_array_from_list__ainfo(arena_allocator(arena), list); }
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inline void
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os_handle_list_alloc(AllocatorInfo ainfo, OS_HandleList* handles, OS_Handle handle) {
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OS_HandleNode* n = alloc_array(ainfo, OS_HandleNode, 1);
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n->v = handle;
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sll_queue_push(handles->first, handles->last, n);
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handles->count += 1;
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}
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inline OS_HandleArray
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os_handle_array_from_list_alloc(AllocatorInfo ainfo, OS_HandleList* list) {
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OS_HandleArray result = {0};
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result.count = list->count;
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result.v = alloc_array_no_zero(ainfo, OS_Handle, result.count);
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U64 idx = 0;
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for(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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String8List os_string_list_from_argcv__arena(Arena* arena, int argc, char** argv);
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String8List os_string_list_from_argcv__ainfo(AllocatorInfo ainfo, int argc, char** argv);
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inline String8List
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os_string_list_from_argcv__ainfo(AllocatorInfo ainfo, int argc, char** argv) {
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String8List result = {0};
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for(int i = 0; i < argc; i += 1)
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{
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String8 str = str8_cstring(argv[i]);
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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 os_string_list_from_argcv(allocator, argc, argv) _Generic(allocator, Arena*: os_string_list_from_argcv__arena, AllocatorInfo: os_string_list_from_argcv__ainfo, default: assert_generic_sel_fail) generic_call(allocator, argc, argv)
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force_inline String8List os_string_list_from_argcv__arena(Arena* arena, int argc, char** argv) { return os_string_list_from_argcv__ainfo(arena_allocator(arena), argc, argv); }
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////////////////////////////////
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//~ rjf: @os_hooks File System (Implemented Per-OS)
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//- rjf: files
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MD_API OS_Handle os_file_open (OS_AccessFlags flags, String8 path);
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MD_API void os_file_close (OS_Handle file);
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MD_API U64 os_file_read (OS_Handle file, Rng1U64 rng, void *out_data);
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MD_API U64 os_file_write (OS_Handle file, Rng1U64 rng, void *data);
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MD_API B32 os_file_set_times (OS_Handle file, DateTime time);
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MD_API FileProperties os_properties_from_file (OS_Handle file);
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MD_API OS_FileID os_id_from_file (OS_Handle file);
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MD_API B32 os_delete_file_at_path (String8 path);
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MD_API B32 os_copy_file_path (String8 dst, String8 src);
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MD_API B32 os_file_path_exists (String8 path);
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MD_API FileProperties os_properties_from_file_path (String8 path);
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MD_API String8 os_full_path_from_path__arena(Arena* arena, String8 path);
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MD_API String8 os_full_path_from_path__ainfo(AllocatorInfo arena, String8 path);
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#define os_full_path_from_path(allocator, path) _Generic(allocator, Arena*: os_full_path_from_path__arena, AllocatorInfo: os_full_path_from_path__ainfo, default: assert_generic_sel_fail) generic_call(allocator, path)
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force_inline String8 os_full_path_from_path__arena(Arena* arena, String8 path) { return os_full_path_from_path__ainfo(arena_allocator(arena), path); }
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//- rjf: file maps
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MD_API OS_Handle os_file_map_open (OS_AccessFlags flags, OS_Handle file);
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MD_API void os_file_map_close (OS_Handle map);
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MD_API void* os_file_map_view_open (OS_Handle map, OS_AccessFlags flags, Rng1U64 range);
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MD_API void os_file_map_view_close(OS_Handle map, void* ptr, Rng1U64 range);
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//- rjf: directory iteration
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OS_FileIter* os_file_iter_begin__arena(Arena* arena, String8 path, OS_FileIterFlags flags);
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MD_API OS_FileIter* os_file_iter_begin__ainfo(AllocatorInfo ainfo, String8 path, OS_FileIterFlags flags);
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B32 os_file_iter_next__arena (Arena* arena, OS_FileIter* iter, OS_FileInfo* info_out);
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MD_API B32 os_file_iter_next__ainfo (AllocatorInfo arena, OS_FileIter* iter, OS_FileInfo* info_out);
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MD_API void os_file_iter_end ( OS_FileIter* iter);
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#define os_file_iter_begin(allocator, path, flags) _Generic(allocator, Arena*: os_file_iter_begin__arena, AllocatorInfo: os_file_iter_begin__ainfo, default: assert_generic_sel_fail) generic_call(allocator, path)
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#define os_file_iter_next(allocator, iter, info_out) _Generic(allocator, Arena*: os_file_iter_next__arena, AllocatorInfo: os_file_iter_next__ainfo, default: assert_generic_sel_fail) generic_call(allocator, path)
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force_inline OS_FileIter* os_file_iter_begin__arena(Arena* arena, String8 path, OS_FileIterFlags flags) { reutrn (); }
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force_inline B32 os_file_iter_next__arena (Arena* arena, OS_FileIter* iter, OS_FileInfo* info_out) { reutrn (); }
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//- rjf: directory creation
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MD_API B32 os_make_directory(String8 path);
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////////////////////////////////
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//~ rjf: Filesystem Helpers (Helpers, Implemented Once)
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MD_API B32 os_write_data_to_file_path (String8 path, String8 data);
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MD_API B32 os_write_data_list_to_file_path(String8 path, String8List list);
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MD_API B32 os_append_data_to_file_path (String8 path, String8 data);
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OS_FileID os_id_from_file_path (String8 path);
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S64 os_file_id_compare (OS_FileID a, OS_FileID b);
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String8 os_data_from_file_path__arena (Arena* arena, String8 path);
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String8 os_data_from_file_path__ainfo (AllocatorInfo ainfo, String8 path);
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MD_API String8 os_string_from_file_range__arena(Arena* arena, OS_Handle file, Rng1U64 range);
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MD_API String8 os_string_from_file_range__ainfo(AllocatorInfo ainfo, OS_Handle file, Rng1U64 range);
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#define os_data_from_file_path(allocator, path) _Generic(allocator, Arena*: os_data_from_file_path__arena, AllocatorInfo: os_data_from_file_path__ainfo, default: assert_generic_sel_fail) generic_call(allocator, path)
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#define os_string_from_file_range(allocator, file, range) _Generic(allocator, Arena*: os_string_from_file_range__arena, AllocatorInfo: os_string_from_file_range__ainfo, default: assert_generic_sel_fail) generic_call(allocator, file, range)
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force_inline String8 os_data_from_file_path__arena(Arena* arena, String8 path) { return os_data_from_file_path__ainfo(arena_allocator(arena), path); }
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inline String8
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os_data_from_file_path__ainfo(AllocatorInfo ainfo, String8 path)
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{
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OS_Handle file = os_file_open(OS_AccessFlag_Read | OS_AccessFlag_ShareRead, path);
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FileProperties props = os_properties_from_file(file);
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String8 data = os_string_from_file_range(ainfo, file, r1u64(0, props.size));
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os_file_close(file);
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return data;
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}
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inline OS_FileID
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os_id_from_file_path(String8 path) {
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OS_Handle file = os_file_open(OS_AccessFlag_Read | OS_AccessFlag_ShareRead, path);
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OS_FileID id = os_id_from_file(file);
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os_file_close(file);
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return id;
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}
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inline S64 os_file_id_compare(OS_FileID a, OS_FileID b) { S64 cmp = 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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String8 os_string_from_guid__arena(Arena* arena, OS_Guid guid);
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String8 os_string_from_guid__ainfo(AllocatorInfo ainfo, OS_Guid guid);
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#define os_string_from_guid(allocator, guid) _Generic(allocator, Arena*: os_string_from_guid__arena, AllocatorInfo: os_string_from_guid__ainfo, default: assert_generic_sel_fail) generic_call(allocator, guid)
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force_inline String8 os_string_from_guid__arena(Arena* arena, OS_Guid guid) { os_string_from_guid__ainfo(arena_allocator(arena), guid); }
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inline String8
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os_string_from_guid_alloc(AllocatorInfo ainfo, OS_Guid guid) {
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String8 result = 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: @os_hooks System/Process Info (Implemented Per-OS)
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MD_API OS_SystemInfo* os_get_system_info (void);
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MD_API OS_ProcessInfo* os_get_process_info(void);
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String8 os_get_current_path__arena(Arena* arena);
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String8 os_get_current_path__ainfo(AllocatorInfo arena);
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#define os_get_current_path(allocator) _Generic(allocator, Arena*: os_get_current_path__arena, AllocatorInfo: os_get_current_path__ainfo) generic_call(allocator)
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force_inline String8 os_get_current_path__arena(Arena* arena) { return os_get_current_path__ainfo(arena_allocator(arena)); }
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////////////////////////////////
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//~ rjf: @os_hooks Memory Allocation (Implemented Per-OS)
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//- rjf: basic
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void* os_reserve ( U64 size);
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B32 os_commit (void* ptr, U64 size);
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void os_decommit(void* ptr, U64 size);
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void os_release (void* ptr, U64 size);
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//- rjf: large pages
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void* os_reserve_large( U64 size);
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B32 os_commit_large (void* ptr, U64 size);
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////////////////////////////////
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//~ rjf: @os_hooks Thread Info (Implemented Per-OS)
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U32 os_tid(void);
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MD_API void os_set_thread_name(String8 string);
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////////////////////////////////
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//~ rjf: @os_hooks Aborting (Implemented Per-OS)
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MD_API void os_abort(S32 exit_code);
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////////////////////////////////
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//~ rjf: @os_hooks Shared Memory (Implemented Per-OS)
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MD_API OS_Handle os_shared_memory_alloc (U64 size, String8 name);
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MD_API OS_Handle os_shared_memory_open (String8 name);
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MD_API void os_shared_memory_close (OS_Handle handle);
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MD_API void* os_shared_memory_view_open (OS_Handle handle, Rng1U64 range);
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MD_API void os_shared_memory_view_close(OS_Handle handle, void* ptr, Rng1U64 range);
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////////////////////////////////
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//~ rjf: @os_hooks Time (Implemented Per-OS)
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MD_API U64 os_now_microseconds (void);
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MD_API U32 os_now_unix (void);
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MD_API DateTime os_now_universal_time (void);
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MD_API DateTime os_universal_time_from_local(DateTime* local_time);
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MD_API DateTime os_local_time_from_universal(DateTime* universal_time);
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MD_API void os_sleep_milliseconds (U32 msec);
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////////////////////////////////
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//~ rjf: @os_hooks Child Processes (Implemented Per-OS)
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MD_API OS_Handle os_process_launch(OS_ProcessLaunchParams* params);
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MD_API B32 os_process_join (OS_Handle handle, U64 endt_us);
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MD_API void os_process_detach(OS_Handle handle);
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////////////////////////////////
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//~ rjf: @os_hooks Threads (Implemented Per-OS)
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MD_API OS_Handle os_thread_launch(OS_ThreadFunctionType* func, void* ptr, void* params);
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MD_API B32 os_thread_join (OS_Handle handle, U64 endt_us);
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MD_API void os_thread_detach(OS_Handle handle);
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////////////////////////////////
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//~ rjf: @os_hooks Synchronization Primitives (Implemented Per-OS)
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//- rjf: recursive mutexes
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MD_API OS_Handle os_mutex_alloc (void);
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MD_API void os_mutex_release(OS_Handle mutex);
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MD_API void os_mutex_take (OS_Handle mutex);
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MD_API void os_mutex_drop (OS_Handle mutex);
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//- rjf: reader/writer mutexes
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MD_API OS_Handle os_rw_mutex_alloc (void);
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MD_API void os_rw_mutex_release(OS_Handle rw_mutex);
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MD_API void os_rw_mutex_take_r (OS_Handle mutex);
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MD_API void os_rw_mutex_drop_r (OS_Handle mutex);
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MD_API void os_rw_mutex_take_w (OS_Handle mutex);
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MD_API void os_rw_mutex_drop_w (OS_Handle mutex);
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//- rjf: condition variables
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MD_API OS_Handle os_condition_variable_alloc (void);
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MD_API void os_condition_variable_release(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 B32 os_condition_variable_wait (OS_Handle cv, OS_Handle mutex, U64 endt_us);
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MD_API B32 os_condition_variable_wait_rw_r(OS_Handle cv, OS_Handle mutex_rw, U64 endt_us);
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MD_API B32 os_condition_variable_wait_rw_w(OS_Handle cv, OS_Handle mutex_rw, U64 endt_us);
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MD_API void os_condition_variable_signal (OS_Handle cv);
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MD_API void os_condition_variable_broadcast(OS_Handle cv);
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//- rjf: cross-process semaphores
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MD_API OS_Handle os_semaphore_alloc (U32 initial_count, U32 max_count, String8 name);
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MD_API void os_semaphore_release(OS_Handle semaphore);
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MD_API OS_Handle os_semaphore_open (String8 name);
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MD_API void os_semaphore_close (OS_Handle semaphore);
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MD_API B32 os_semaphore_take (OS_Handle semaphore, U64 endt_us);
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MD_API void os_semaphore_drop (OS_Handle semaphore);
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//- rjf: scope macros
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#define os_mutex_scope(mutex) defer_loop( os_mutex_take (mutex), os_mutex_drop (mutex))
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#define os_mutex_scope_r(mutex) defer_loop( os_rw_mutex_take_r(mutex), os_rw_mutex_drop_r(mutex))
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#define os_mutex_scope_W(mutex) defer_loop( os_rw_mutex_take_w(mutex), os_rw_mutex_drop_w(mutex))
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#define os_mutex_scope_rw_promote(mutex) defer_loop((os_rw_mutex_drop_r(mutex), os_rw_mutex_take_w(mutex)), (os_rw_mutex_drop_w(mutex), os_rw_mutex_take_r(mutex)))
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////////////////////////////////
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//~ rjf: @os_hooks Dynamically-Loaded Libraries (Implemented Per-OS)
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MD_API OS_Handle os_library_open (String8 path);
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MD_API void os_library_close (OS_Handle lib);
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MD_API VoidProc* os_library_load_proc(OS_Handle lib, String8 name);
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////////////////////////////////
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//~ rjf: @os_hooks Safe Calls (Implemented Per-OS)
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MD_API void os_safe_call(OS_ThreadFunctionType* func, OS_ThreadFunctionType* fail_handler, void* ptr);
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////////////////////////////////
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//~ rjf: @os_hooks GUIDs (Implemented Per-OS)
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MD_API OS_Guid os_make_guid(void);
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////////////////////////////////
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//~ rjf: @os_hooks Entry Points (Implemented Per-OS)
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// NOTE(rjf): The implementation of `os_core` will define low-level entry
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// points if BUILD_ENTRY_DEFINING_UNIT is defined to 1. These will call
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// into the standard codebase program entry points, named "entry_point".
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#if BUILD_ENTRY_DEFINING_UNIT
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void entry_point(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 OS_Context OS_Context;
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struct OS_Context
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{
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Arena* state_arena;
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Arena* entity_arena;
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B32 enable_large_pages;
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};
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// OS layer initialization
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MD_API void os_init(OS_Context* ctx, TCTX* thread_ctx);
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