mirror of
https://github.com/Ed94/raddebugger.git
synced 2026-07-14 13:31:25 -07:00
Ryan Fleury
125 lines
2.7 KiB
C
125 lines
2.7 KiB
C
// Copyright (c) Epic Games Tools
|
|
// Licensed under the MIT license (https://opensource.org/license/mit/)
|
|
|
|
#ifndef FILE_STREAM_H
|
|
#define FILE_STREAM_H
|
|
|
|
////////////////////////////////
|
|
//~ rjf: Per-Path Info Cache Types
|
|
|
|
typedef struct FS_RangeNode FS_RangeNode;
|
|
struct FS_RangeNode
|
|
{
|
|
FS_RangeNode *next;
|
|
HS_ID id;
|
|
U64 working_count;
|
|
};
|
|
|
|
typedef struct FS_RangeSlot FS_RangeSlot;
|
|
struct FS_RangeSlot
|
|
{
|
|
FS_RangeNode *first;
|
|
FS_RangeNode *last;
|
|
};
|
|
|
|
typedef struct FS_Node FS_Node;
|
|
struct FS_Node
|
|
{
|
|
FS_Node *next;
|
|
|
|
// rjf: file metadata
|
|
String8 path;
|
|
FileProperties props;
|
|
|
|
// rjf: hash store root
|
|
HS_Root root;
|
|
|
|
// rjf: sub-table of per-requested-file-range info
|
|
U64 slots_count;
|
|
FS_RangeSlot *slots;
|
|
};
|
|
|
|
typedef struct FS_Slot FS_Slot;
|
|
struct FS_Slot
|
|
{
|
|
FS_Node *first;
|
|
FS_Node *last;
|
|
};
|
|
|
|
typedef struct FS_Stripe FS_Stripe;
|
|
struct FS_Stripe
|
|
{
|
|
Arena *arena;
|
|
OS_Handle cv;
|
|
OS_Handle rw_mutex;
|
|
};
|
|
|
|
////////////////////////////////
|
|
//~ rjf: Shared State Bundle
|
|
|
|
typedef struct FS_Shared FS_Shared;
|
|
struct FS_Shared
|
|
{
|
|
Arena *arena;
|
|
U64 change_gen;
|
|
|
|
// rjf: path info cache
|
|
U64 slots_count;
|
|
U64 stripes_count;
|
|
FS_Slot *slots;
|
|
FS_Stripe *stripes;
|
|
|
|
// rjf: user -> streamer ring buffer
|
|
U64 u2s_ring_size;
|
|
U8 *u2s_ring_base;
|
|
U64 u2s_ring_write_pos;
|
|
U64 u2s_ring_read_pos;
|
|
OS_Handle u2s_ring_cv;
|
|
OS_Handle u2s_ring_mutex;
|
|
|
|
// rjf: change detector threads
|
|
OS_Handle detector_thread;
|
|
};
|
|
|
|
////////////////////////////////
|
|
//~ rjf: Globals
|
|
|
|
global FS_Shared *fs_shared = 0;
|
|
|
|
////////////////////////////////
|
|
//~ rjf: Basic Helpers
|
|
|
|
internal U64 fs_little_hash_from_string(String8 string);
|
|
internal U128 fs_big_hash_from_string_range(String8 string, Rng1U64 range);
|
|
|
|
////////////////////////////////
|
|
//~ rjf: Top-Level API
|
|
|
|
internal void fs_init(void);
|
|
|
|
////////////////////////////////
|
|
//~ rjf: Change Generation
|
|
|
|
internal U64 fs_change_gen(void);
|
|
|
|
////////////////////////////////
|
|
//~ rjf: Cache Interaction
|
|
|
|
internal HS_Key fs_key_from_path_range(String8 path, Rng1U64 range, U64 endt_us);
|
|
internal U128 fs_hash_from_path_range(String8 path, Rng1U64 range, U64 endt_us);
|
|
internal FileProperties fs_properties_from_path(String8 path);
|
|
|
|
////////////////////////////////
|
|
//~ rjf: Streaming Work
|
|
|
|
internal B32 fs_u2s_enqueue_req(HS_Key key, Rng1U64 range, String8 path, U64 endt_us);
|
|
internal void fs_u2s_dequeue_req(Arena *arena, HS_Key *key_out, Rng1U64 *range_out, String8 *path_out);
|
|
ASYNC_WORK_DEF(fs_stream_work);
|
|
|
|
////////////////////////////////
|
|
//~ rjf: Change Detector Thread
|
|
|
|
internal void fs_detector_thread__entry_point(void *p);
|
|
|
|
#endif // FILE_STREAM_H
|