thread.h

#ifndef INTERNAL_THREAD_H                                /*-*-C-*-vi:se ft=c:*/
#define INTERNAL_THREAD_H
#include "ruby/ruby.h"          /* for VALUE */
#include "ruby/intern.h"        /* for rb_blocking_function_t */
#include "ccan/list/list.h"     /* for list in rb_io_close_wait_list */
 
struct rb_execution_context_struct; /* in vm_core.h */
struct rb_gc_mark_ctx;          /* in internal/gc.h */
struct rb_thread_struct;        /* in vm_core.h */
struct rb_io;
 
#define RB_VM_SAVE_MACHINE_CONTEXT(th)                          \
    do {                                                        \
        FLUSH_REGISTER_WINDOWS;                                 \
        setjmp((th)->ec->machine.regs);                         \
        SET_MACHINE_STACK_END(&(th)->ec->machine.stack_end);    \
    } while (0)
 
#define RUBY_FATAL_THREAD_KILLED INT2FIX(0)
#define RUBY_FATAL_THREAD_TERMINATED INT2FIX(1)
#define RUBY_FATAL_FIBER_KILLED RB_INT2FIX(2)
 
VALUE rb_obj_is_mutex(VALUE obj);
VALUE rb_suppress_tracing(VALUE (*func)(VALUE), VALUE arg);
void rb_thread_execute_interrupts(VALUE th);
VALUE rb_thread_shield_new(void);
bool rb_thread_shield_owned(VALUE self);
VALUE rb_thread_shield_wait(VALUE self);
VALUE rb_thread_shield_release(VALUE self);
VALUE rb_thread_shield_destroy(VALUE self);
int rb_thread_to_be_killed(VALUE thread);
void rb_thread_acquire_fork_lock(void);
void rb_thread_release_fork_lock(void);
void rb_thread_reset_fork_lock(void);
void rb_mutex_allow_trap(VALUE self, int val);
VALUE rb_uninterruptible(VALUE (*b_proc)(VALUE), VALUE data);
VALUE rb_mutex_owned_p(VALUE self);
VALUE rb_exec_recursive_outer_mid(VALUE (*f)(VALUE g, VALUE h, int r), VALUE g, VALUE h, ID mid);
void ruby_mn_threads_params(void);
 
int rb_thread_io_wait(struct rb_thread_struct *th, struct rb_io *io, int events, struct timeval * timeout);
int rb_thread_wait_for_single_fd(struct rb_thread_struct *th, int fd, int events, struct timeval * timeout);
 
size_t rb_thread_io_close_interrupt(struct rb_io *);
void rb_thread_io_close_wait(struct rb_io *);
 
void rb_ec_check_ints(struct rb_execution_context_struct *ec);
 
void rb_thread_free_native_thread(void *th_ptr);
 
bool rb_thread_event_hooks_registered_p(void); /* thread_pthread.c */
void rb_thread_free_body(void *th);            /* vm.c */
 
RUBY_SYMBOL_EXPORT_BEGIN
 
void *rb_thread_prevent_fork(void *(*func)(void *), void *data); /* for ext/socket/raddrinfo.c */
void rb_thread_register_exiting(void); /* for ext/socket/raddrinfo.c */
 
/* Temporary.  This API will be removed (renamed). */
VALUE rb_thread_io_blocking_region(struct rb_io *io, rb_blocking_function_t *func, void *data1);
VALUE rb_thread_io_blocking_call(struct rb_io *io, rb_blocking_function_t *func, void *data1, int events);
 
// Invoke the given function, with the specified argument, in a way that `IO#close` from another execution context can interrupt it.
VALUE rb_thread_io_blocking_operation(VALUE self, VALUE(*function)(VALUE), VALUE argument);
 
/* thread.c (export) */
int ruby_thread_has_gvl_p(void); /* for ext/fiddle/closure.c */
 
RUBY_SYMBOL_EXPORT_END
 
int rb_threadptr_execute_interrupts(struct rb_thread_struct *th, int blocking_timing);
bool rb_thread_mn_schedulable(VALUE thread);
 
bool rb_thread_resolve_unblock_function(rb_unblock_function_t **unblock_function, void **data2, struct rb_thread_struct *thread);
 
// interrupt exec
 
typedef VALUE (rb_interrupt_exec_func_t)(void *data);
 
enum rb_interrupt_exec_flag {
    rb_interrupt_exec_flag_none = 0x00,
    rb_interrupt_exec_flag_value_data = 0x01,
    rb_interrupt_exec_flag_new_thread = 0x02,
};
 
// interrupt the target_th and run func.
struct rb_ractor_struct;
 
void rb_threadptr_interrupt_exec(struct rb_thread_struct *target_th,
                                 rb_interrupt_exec_func_t *func, void *data, enum rb_interrupt_exec_flag flags);
 
// create a thread in the target_r and run func on the created thread.
void rb_ractor_interrupt_exec(struct rb_ractor_struct *target_r,
                              rb_interrupt_exec_func_t *func, void *data, enum rb_interrupt_exec_flag flags);
 
void rb_threadptr_interrupt_exec_task_mark(struct rb_thread_struct *th);
 
/* Mark the roots of the heap objects a thread owns, excluding ec and fiber.  Used by
 * thread_mark and by the Ractor's local-root marking (rb_ractor_mark_local_roots). */
void rb_thread_mark_owned_roots(const struct rb_gc_mark_ctx *ctx, struct rb_thread_struct *th);
 
#endif /* INTERNAL_THREAD_H */