ciabatta/inc/threads.h

96 lines
2.2 KiB
C

#pragma once
// 7.28.1 p.3: Macros
#define ONCE_FLAG_INIT 1
#define TSS_DTOR_ITERATIONS 32
// TODO(bumbread): check the spec for whether thread_local needs to be declared
// in threads.h
#define thread_local _Thread_local
// 7.28.1 p.4: Types
#if !defined(_timespec_defined)
#define _timespec_defined
typedef unsigned long long time_t;
struct timespec {
time_t tv_sec;
long tv_nsec;
};
#endif
#if defined(_WIN32)
#include "os_win/threads_types.h"
#else
#error "Not implemented"
#endif
typedef void(*tss_dtor_t) (void*);
typedef int (*thrd_start_t)(void*);
// TODO(bumbread): this probably should be a mutex or a semaphore
// also probably can be implemented with interlocked increment
typedef int once_flag;
// 7.28.1 p.5: Enumeration constants
enum {
mtx_plain = 0,
mtx_recursive = 1,
mtx_timed = 2,
};
enum {
thrd_success,
thrd_timedout,
thrd_busy,
thrd_error,
thrd_nomem
};
// Thread functions
thrd_t thrd_current(void);
int thrd_create (thrd_t *thr, thrd_start_t func, void *arg);
int thrd_detach (thrd_t thr);
int thrd_equal (thrd_t thr0, thrd_t thr1);
int thrd_join (thrd_t thr, int *res);
void thrd_yield (void);
int thrd_sleep(
const struct timespec *duration,
struct timespec *remaining
);
_Noreturn void thrd_exit(int res);
// Mutex functions
void mtx_destroy (mtx_t *mtx);
int mtx_init (mtx_t *mtx, int type);
int mtx_unlock (mtx_t *mtx);
int mtx_trylock (mtx_t *mtx);
int mtx_lock (mtx_t *mtx);
int mtx_timedlock(
mtx_t *restrict mtx,
const struct timespec *restrict ts
);
// Thread-local storage functions
int tss_create(tss_t *key, tss_dtor_t dtor);
void tss_delete(tss_t key);
void *tss_get (tss_t key);
int tss_set (tss_t key, void *val);
// Condition functions
int cnd_init (cnd_t *cond);
int cnd_broadcast(cnd_t *cond);
void cnd_destroy (cnd_t *cond);
int cnd_signal (cnd_t *cond);
int cnd_wait (cnd_t *cond, mtx_t *mtx);
int cnd_timedwait(
cnd_t *restrict cond,
mtx_t *restrict mtx,
const struct timespec *restrict ts
);
// Call once
void call_once(once_flag *flag, void (*func)(void));