1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
#include "ruby.h"
#include "ruby/thread.h"
#include "rubyspec.h"
#include <math.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if defined(_WIN32)
#define pipe(p) rb_w32_pipe(p)
#endif
#ifndef _WIN32
#include <pthread.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
static VALUE thread_spec_rb_thread_alone(VALUE self) {
return rb_thread_alone() ? Qtrue : Qfalse;
}
#if defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#endif
/* This is unblocked by unblock_func(). */
static void* blocking_gvl_func(void* data) {
int rfd = *(int *)data;
char dummy = ' ';
ssize_t r;
do {
r = read(rfd, &dummy, 1);
} while (r == -1 && errno == EINTR);
close(rfd);
return (void*)((r == 1 && dummy == 'A') ? Qtrue : Qfalse);
}
static void unblock_gvl_func(void *data) {
int wfd = *(int *)data;
char dummy = 'A';
ssize_t r;
do {
r = write(wfd, &dummy, 1);
} while (r == -1 && errno == EINTR);
close(wfd);
}
/* Returns true if the thread is interrupted. */
static VALUE thread_spec_rb_thread_call_without_gvl(VALUE self) {
int fds[2];
void* ret;
if (pipe(fds) == -1) {
rb_raise(rb_eRuntimeError, "could not create pipe");
}
ret = rb_thread_call_without_gvl(blocking_gvl_func, &fds[0],
unblock_gvl_func, &fds[1]);
return (VALUE)ret;
}
/* This is unblocked by a signal. */
static void* blocking_gvl_func_for_udf_io(void *data) {
int rfd = (int)(size_t)data;
char dummy;
if (read(rfd, &dummy, 1) == -1 && errno == EINTR) {
return (void*)Qtrue;
} else {
return (void*)Qfalse;
}
}
/* Returns true if the thread is interrupted. */
static VALUE thread_spec_rb_thread_call_without_gvl_with_ubf_io(VALUE self) {
int fds[2];
void* ret;
if (pipe(fds) == -1) {
rb_raise(rb_eRuntimeError, "could not create pipe");
}
ret = rb_thread_call_without_gvl(blocking_gvl_func_for_udf_io,
(void*)(size_t)fds[0], RUBY_UBF_IO, 0);
close(fds[0]);
close(fds[1]);
return (VALUE)ret;
}
static VALUE thread_spec_rb_thread_current(VALUE self) {
return rb_thread_current();
}
static VALUE thread_spec_rb_thread_local_aref(VALUE self, VALUE thr, VALUE sym) {
return rb_thread_local_aref(thr, SYM2ID(sym));
}
static VALUE thread_spec_rb_thread_local_aset(VALUE self, VALUE thr, VALUE sym, VALUE value) {
return rb_thread_local_aset(thr, SYM2ID(sym), value);
}
static VALUE thread_spec_rb_thread_wakeup(VALUE self, VALUE thr) {
return rb_thread_wakeup(thr);
}
static VALUE thread_spec_rb_thread_wait_for(VALUE self, VALUE s, VALUE ms) {
struct timeval tv;
tv.tv_sec = NUM2INT(s);
tv.tv_usec = NUM2INT(ms);
rb_thread_wait_for(tv);
return Qnil;
}
VALUE thread_spec_call_proc(void *arg_ptr) {
VALUE arg_array = (VALUE)arg_ptr;
VALUE arg = rb_ary_pop(arg_array);
VALUE proc = rb_ary_pop(arg_array);
return rb_funcall(proc, rb_intern("call"), 1, arg);
}
static VALUE thread_spec_rb_thread_create(VALUE self, VALUE proc, VALUE arg) {
VALUE args = rb_ary_new();
rb_ary_push(args, proc);
rb_ary_push(args, arg);
return rb_thread_create(thread_spec_call_proc, (void*)args);
}
static VALUE thread_spec_ruby_native_thread_p(VALUE self) {
if (ruby_native_thread_p()) {
return Qtrue;
} else {
return Qfalse;
}
}
#ifndef _WIN32
static VALUE false_result = Qfalse;
static VALUE true_result = Qtrue;
static void *new_thread_check(void *args) {
if (ruby_native_thread_p()) {
return &true_result;
} else {
return &false_result;
}
}
#endif
static VALUE thread_spec_ruby_native_thread_p_new_thread(VALUE self) {
#ifndef _WIN32
pthread_t t;
void *result = &true_result;
pthread_create(&t, NULL, new_thread_check, NULL);
pthread_join(t, &result);
return *(VALUE *)result;
#else
return Qfalse;
#endif
}
void Init_thread_spec(void) {
VALUE cls = rb_define_class("CApiThreadSpecs", rb_cObject);
rb_define_method(cls, "rb_thread_alone", thread_spec_rb_thread_alone, 0);
rb_define_method(cls, "rb_thread_call_without_gvl", thread_spec_rb_thread_call_without_gvl, 0);
rb_define_method(cls, "rb_thread_call_without_gvl_with_ubf_io", thread_spec_rb_thread_call_without_gvl_with_ubf_io, 0);
rb_define_method(cls, "rb_thread_current", thread_spec_rb_thread_current, 0);
rb_define_method(cls, "rb_thread_local_aref", thread_spec_rb_thread_local_aref, 2);
rb_define_method(cls, "rb_thread_local_aset", thread_spec_rb_thread_local_aset, 3);
rb_define_method(cls, "rb_thread_wakeup", thread_spec_rb_thread_wakeup, 1);
rb_define_method(cls, "rb_thread_wait_for", thread_spec_rb_thread_wait_for, 2);
rb_define_method(cls, "rb_thread_create", thread_spec_rb_thread_create, 2);
rb_define_method(cls, "ruby_native_thread_p", thread_spec_ruby_native_thread_p, 0);
rb_define_method(cls, "ruby_native_thread_p_new_thread", thread_spec_ruby_native_thread_p_new_thread, 0);
}
#ifdef __cplusplus
}
#endif
|
