mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
#ifndef RUBY_THREAD_PTHREAD_H
|
|
#define RUBY_THREAD_PTHREAD_H
|
|
/**********************************************************************
|
|
|
|
thread_pthread.h -
|
|
|
|
$Author$
|
|
|
|
Copyright (C) 2004-2007 Koichi Sasada
|
|
|
|
**********************************************************************/
|
|
|
|
#ifdef HAVE_PTHREAD_NP_H
|
|
#include <pthread_np.h>
|
|
#endif
|
|
|
|
#define RB_NATIVETHREAD_LOCK_INIT PTHREAD_MUTEX_INITIALIZER
|
|
#define RB_NATIVETHREAD_COND_INIT PTHREAD_COND_INITIALIZER
|
|
|
|
// per-Thead scheduler helper data
|
|
struct rb_thread_sched_item {
|
|
union {
|
|
struct ccan_list_node ubf;
|
|
struct ccan_list_node readyq; // protected by sched->lock
|
|
} node;
|
|
};
|
|
|
|
struct rb_native_thread {
|
|
int id;
|
|
|
|
rb_nativethread_id_t thread_id;
|
|
|
|
#ifdef RB_THREAD_T_HAS_NATIVE_ID
|
|
int tid;
|
|
#endif
|
|
|
|
struct rb_thread_struct *running_thread;
|
|
|
|
// to control native thread
|
|
#if defined(__GLIBC__) || defined(__FreeBSD__)
|
|
union
|
|
#else
|
|
/*
|
|
* assume the platform condvars are badly implemented and have a
|
|
* "memory" of which mutex they're associated with
|
|
*/
|
|
struct
|
|
#endif
|
|
{
|
|
rb_nativethread_cond_t intr; /* th->interrupt_lock */
|
|
rb_nativethread_cond_t readyq; /* use sched->lock */
|
|
} cond;
|
|
|
|
#ifdef USE_SIGALTSTACK
|
|
void *altstack;
|
|
#endif
|
|
};
|
|
|
|
#undef except
|
|
#undef try
|
|
#undef leave
|
|
#undef finally
|
|
|
|
// per-Ractor
|
|
struct rb_thread_sched {
|
|
/* fast path */
|
|
|
|
const struct rb_thread_struct *running; // running thread or NULL
|
|
rb_nativethread_lock_t lock;
|
|
|
|
/*
|
|
* slow path, protected by ractor->thread_sched->lock
|
|
* - @readyq - FIFO queue of threads waiting for running
|
|
* - @timer - it handles timeslices for @current. It is any one thread
|
|
* in @waitq, there is no @timer if @waitq is empty, but always
|
|
* a @timer if @waitq has entries
|
|
* - @timer_err tracks timeslice limit, the timeslice only resets
|
|
* when pthread_cond_timedwait returns ETIMEDOUT, so frequent
|
|
* switching between contended/uncontended GVL won't reset the
|
|
* timer.
|
|
*/
|
|
struct ccan_list_head readyq;
|
|
const struct rb_thread_struct *timer;
|
|
int timer_err;
|
|
|
|
/* yield */
|
|
rb_nativethread_cond_t switch_cond;
|
|
rb_nativethread_cond_t switch_wait_cond;
|
|
int need_yield;
|
|
int wait_yield;
|
|
};
|
|
|
|
#if __STDC_VERSION__ >= 201112
|
|
#define RB_THREAD_LOCAL_SPECIFIER _Thread_local
|
|
#elif defined(__GNUC__) && !defined(RB_THREAD_LOCAL_SPECIFIER_IS_UNSUPPORTED)
|
|
/* note that ICC (linux) and Clang are covered by __GNUC__ */
|
|
#define RB_THREAD_LOCAL_SPECIFIER __thread
|
|
#else
|
|
|
|
typedef pthread_key_t native_tls_key_t;
|
|
|
|
static inline void *
|
|
native_tls_get(native_tls_key_t key)
|
|
{
|
|
// return value should be checked by caller
|
|
return pthread_getspecific(key);
|
|
}
|
|
|
|
static inline void
|
|
native_tls_set(native_tls_key_t key, void *ptr)
|
|
{
|
|
if (UNLIKELY(pthread_setspecific(key, ptr) != 0)) {
|
|
rb_bug("pthread_setspecific error");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
RUBY_SYMBOL_EXPORT_BEGIN
|
|
#ifdef RB_THREAD_LOCAL_SPECIFIER
|
|
#ifdef __APPLE__
|
|
// on Darwin, TLS can not be accessed across .so
|
|
struct rb_execution_context_struct *rb_current_ec(void);
|
|
void rb_current_ec_set(struct rb_execution_context_struct *);
|
|
#else
|
|
RUBY_EXTERN RB_THREAD_LOCAL_SPECIFIER struct rb_execution_context_struct *ruby_current_ec;
|
|
#endif
|
|
#else
|
|
RUBY_EXTERN native_tls_key_t ruby_current_ec_key;
|
|
#endif
|
|
RUBY_SYMBOL_EXPORT_END
|
|
|
|
#endif /* RUBY_THREAD_PTHREAD_H */
|