////////////////////////////////
//~ Callback types

#define W_CallbackFuncDef(func_name, arg_name) void func_name(String arg_name)
typedef W_CallbackFuncDef(W_CallbackFunc, name);

////////////////////////////////
//~ Event types

Struct(W_Event)
{
    String name;
    W_Event *next;
};

////////////////////////////////
//~ Shared state

#define W_DispatcherDelaySeconds 0.050
#define W_DispatcherDedupBins 128

Struct(W_SharedState)
{
    P_Watch *watch;
    Atomic32 W_Shutdown;
    Counter watch_jobs_counter;

    Mutex watch_dispatcher_mutex;
    Arena *watch_events_arena;
    W_Event *first_watch_event;
    W_Event *last_watch_event;
    Cv watch_dispatcher_cv;

    Mutex watch_callbacks_mutex;
    W_CallbackFunc *watch_callbacks[64];
    u64 num_watch_callbacks;
};

extern W_SharedState W_shared_state;

////////////////////////////////
//~ Startup

void W_Startup(void);
P_ExitFuncDef(W_Shutdown);

////////////////////////////////
//~ Watch operations

void W_RegisterCallback(W_CallbackFunc *callback);

////////////////////////////////
//~ Callback job

JobDecl(W_RunCallbacksJob, { String name; W_CallbackFunc **callbacks; });

////////////////////////////////
//~ Long running jobs

JobDecl(W_MonitorJob, { i32 _; });
JobDecl(W_DispatcherJob, { i32 _; });