зеркало из https://github.com/github/ruby.git
142 строки
2.5 KiB
C
142 строки
2.5 KiB
C
/* -*-c-*- */
|
|
/*
|
|
* from eval.c
|
|
*/
|
|
|
|
#include "eval_intern.h"
|
|
|
|
/* exit */
|
|
|
|
void
|
|
rb_call_end_proc(VALUE data)
|
|
{
|
|
rb_proc_call(data, rb_ary_new());
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* at_exit { block } -> proc
|
|
*
|
|
* Converts _block_ to a +Proc+ object (and therefore
|
|
* binds it at the point of call) and registers it for execution when
|
|
* the program exits. If multiple handlers are registered, they are
|
|
* executed in reverse order of registration.
|
|
*
|
|
* def do_at_exit(str1)
|
|
* at_exit { print str1 }
|
|
* end
|
|
* at_exit { puts "cruel world" }
|
|
* do_at_exit("goodbye ")
|
|
* exit
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* goodbye cruel world
|
|
*/
|
|
|
|
static VALUE
|
|
rb_f_at_exit(void)
|
|
{
|
|
VALUE proc;
|
|
|
|
if (!rb_block_given_p()) {
|
|
rb_raise(rb_eArgError, "called without a block");
|
|
}
|
|
proc = rb_block_proc();
|
|
rb_set_end_proc(rb_call_end_proc, proc);
|
|
return proc;
|
|
}
|
|
|
|
struct end_proc_data {
|
|
void (*func) ();
|
|
VALUE data;
|
|
int safe;
|
|
struct end_proc_data *next;
|
|
};
|
|
|
|
static struct end_proc_data *end_procs, *ephemeral_end_procs;
|
|
|
|
void
|
|
rb_set_end_proc(void (*func)(VALUE), VALUE data)
|
|
{
|
|
struct end_proc_data *link = ALLOC(struct end_proc_data);
|
|
struct end_proc_data **list;
|
|
rb_thread_t *th = GET_THREAD();
|
|
|
|
if (th->top_wrapper) {
|
|
list = &ephemeral_end_procs;
|
|
}
|
|
else {
|
|
list = &end_procs;
|
|
}
|
|
link->next = *list;
|
|
link->func = func;
|
|
link->data = data;
|
|
link->safe = rb_safe_level();
|
|
*list = link;
|
|
}
|
|
|
|
void
|
|
rb_mark_end_proc(void)
|
|
{
|
|
struct end_proc_data *link;
|
|
|
|
link = end_procs;
|
|
while (link) {
|
|
rb_gc_mark(link->data);
|
|
link = link->next;
|
|
}
|
|
link = ephemeral_end_procs;
|
|
while (link) {
|
|
rb_gc_mark(link->data);
|
|
link = link->next;
|
|
}
|
|
}
|
|
|
|
void
|
|
rb_exec_end_proc(void)
|
|
{
|
|
struct end_proc_data *volatile link;
|
|
int status;
|
|
volatile int safe = rb_safe_level();
|
|
|
|
while (ephemeral_end_procs) {
|
|
link = ephemeral_end_procs;
|
|
ephemeral_end_procs = link->next;
|
|
|
|
PUSH_TAG();
|
|
if ((status = EXEC_TAG()) == 0) {
|
|
rb_set_safe_level_force(link->safe);
|
|
(*link->func) (link->data);
|
|
}
|
|
POP_TAG();
|
|
if (status) {
|
|
error_handle(status);
|
|
}
|
|
xfree(link);
|
|
}
|
|
|
|
while (end_procs) {
|
|
link = end_procs;
|
|
end_procs = link->next;
|
|
|
|
PUSH_TAG();
|
|
if ((status = EXEC_TAG()) == 0) {
|
|
rb_set_safe_level_force(link->safe);
|
|
(*link->func) (link->data);
|
|
}
|
|
POP_TAG();
|
|
if (status) {
|
|
error_handle(status);
|
|
}
|
|
xfree(link);
|
|
}
|
|
rb_set_safe_level_force(safe);
|
|
}
|
|
|
|
void
|
|
Init_jump(void)
|
|
{
|
|
rb_define_global_function("at_exit", rb_f_at_exit, 0);
|
|
}
|