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
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
#!ruby -s
$output ||= "callback"
$out = open("#{$output}.c", "w")
$dl_h = ARGV[0] || "dl.h"
# import DLSTACK_SIZE, DLSTACK_ARGS and so on
File.open($dl_h){|f|
pre = ""
f.each{|line|
line.chop!
if( line[-1] == ?\\ )
line.chop!
line.concat(" ")
pre += line
next
end
if( pre.size > 0 )
line = pre + line
pre = ""
end
case line
when /#define\s+DLSTACK_SIZE\s+\(?(\d+)\)?/
DLSTACK_SIZE = $1.to_i
when /#define\s+DLSTACK_ARGS\s+(.+)/
DLSTACK_ARGS = $1.to_i
when /#define\s+DLTYPE_([A-Z_]+)\s+\(?(\d+)\)?/
eval("#{$1} = #{$2}")
when /#define\s+MAX_DLTYPE\s+\(?(\d+)\)?/
MAX_DLTYPE = $1.to_i
when /#define\s+MAX_CALLBACK\s+\(?(\d+)\)?/
MAX_CALLBACK = $1.to_i
end
}
}
CDECL = "cdecl"
STDCALL = "stdcall"
CALLTYPES = [CDECL, STDCALL]
DLTYPE = {
VOID => {
:name => 'void',
:type => 'void',
:conv => nil,
},
CHAR => {
:name => 'char',
:type => 'char',
:conv => 'NUM2CHR(%s)'
},
SHORT => {
:name => 'short',
:type => 'short',
:conv => 'NUM2INT(%s)',
},
INT => {
:name => 'int',
:type => 'int',
:conv => 'NUM2INT(%s)',
},
LONG => {
:name => 'long',
:type => 'long',
:conv => 'NUM2LONG(%s)',
},
LONG_LONG => {
:name => 'long_long',
:type => 'LONG_LONG',
:conv => 'NUM2LL(%s)',
},
FLOAT => {
:name => 'float',
:type => 'float',
:conv => '(float)RFLOAT_VALUE(%s)',
},
DOUBLE => {
:name => 'double',
:type => 'double',
:conv => 'RFLOAT_VALUE(%s)',
},
VOIDP => {
:name => 'ptr',
:type => 'void *',
:conv => 'NUM2PTR(%s)',
},
}
def func_name(ty, argc, n, calltype)
"rb_dl_callback_#{DLTYPE[ty][:name]}_#{argc}_#{n}_#{calltype}"
end
$out << (<<EOS)
#include "ruby.h"
VALUE rb_DLCdeclCallbackAddrs, rb_DLCdeclCallbackProcs;
#ifdef FUNC_STDCALL
VALUE rb_DLStdcallCallbackAddrs, rb_DLStdcallCallbackProcs;
#endif
/*static void *cdecl_callbacks[MAX_DLTYPE][MAX_CALLBACK];*/
#ifdef FUNC_STDCALL
/*static void *stdcall_callbacks[MAX_DLTYPE][MAX_CALLBACK];*/
#endif
ID rb_dl_cb_call;
EOS
def foreach_proc_entry
for calltype in CALLTYPES
case calltype
when CDECL
proc_entry = "rb_DLCdeclCallbackProcs"
when STDCALL
proc_entry = "rb_DLStdcallCallbackProcs"
else
raise "unknown calltype: #{calltype}"
end
yield calltype, proc_entry
end
end
def gencallback(ty, calltype, proc_entry, argc, n)
dltype = DLTYPE[ty]
ret = dltype[:conv]
src = <<-EOS
#{calltype == STDCALL ? "\n#ifdef FUNC_STDCALL" : ""}
static #{dltype[:type]}
FUNC_#{calltype.upcase}(#{func_name(ty,argc,n,calltype)})(#{(0...argc).collect{|i| "DLSTACK_TYPE stack#{i}"}.join(", ")})
{
VALUE #{ret ? "ret, " : ""}cb#{argc > 0 ? ", args[#{argc}]" : ""};
#{
(0...argc).collect{|i|
"\n args[#{i}] = PTR2NUM(stack#{i});"
}.join("")
}
cb = rb_ary_entry(rb_ary_entry(#{proc_entry}, #{ty}), #{(n * DLSTACK_SIZE) + argc});
#{ret ? "ret = " : ""}rb_funcall2(cb, rb_dl_cb_call, #{argc}, #{argc > 0 ? 'args' : 'NULL'});
EOS
src << " return #{ret % "ret"};\n" if ret
src << <<-EOS
}
#{calltype == STDCALL ? "#endif\n" : ""}
EOS
end
def gen_push_proc_ary(ty, aryname)
sprintf(" rb_ary_push(#{aryname}, rb_ary_new3(%d,%s));",
MAX_CALLBACK * DLSTACK_SIZE,
(0...MAX_CALLBACK).collect{
(0...DLSTACK_SIZE).collect{ "Qnil" }.join(",")
}.join(","))
end
def gen_push_addr_ary(ty, aryname, calltype)
sprintf(" rb_ary_push(#{aryname}, rb_ary_new3(%d,%s));",
MAX_CALLBACK * DLSTACK_SIZE,
(0...MAX_CALLBACK).collect{|i|
(0...DLSTACK_SIZE).collect{|argc|
"PTR2NUM(%s)" % func_name(ty,argc,i,calltype)
}.join(",")
}.join(","))
end
def gen_callback_file(ty)
filename = "#{$output}-#{ty}.c"
initname = "rb_dl_init_callbacks_#{ty}"
body = <<-EOS
#include "dl.h"
extern VALUE rb_DLCdeclCallbackAddrs, rb_DLCdeclCallbackProcs;
#ifdef FUNC_STDCALL
extern VALUE rb_DLStdcallCallbackAddrs, rb_DLStdcallCallbackProcs;
#endif
extern ID rb_dl_cb_call;
EOS
yield body
body << <<-EOS
void
#{initname}()
{
#{gen_push_proc_ary(ty, "rb_DLCdeclCallbackProcs")}
#{gen_push_addr_ary(ty, "rb_DLCdeclCallbackAddrs", CDECL)}
#ifdef FUNC_STDCALL
#{gen_push_proc_ary(ty, "rb_DLStdcallCallbackProcs")}
#{gen_push_addr_ary(ty, "rb_DLStdcallCallbackAddrs", STDCALL)}
#endif
}
EOS
[filename, initname, body]
end
callbacks = []
for ty in 0...MAX_DLTYPE
filename, initname, body = gen_callback_file(ty) {|f|
foreach_proc_entry do |calltype, proc_entry|
for argc in 0...DLSTACK_SIZE
for n in 0...MAX_CALLBACK
f << gencallback(ty, calltype, proc_entry, argc, n)
end
end
end
}
$out << "void #{initname}();\n"
callbacks << [filename, body]
end
$out << (<<EOS)
void
Init_callback(void)
{
VALUE tmp;
VALUE rb_mDL = rb_path2class("DL");
rb_dl_cb_call = rb_intern("call");
tmp = rb_DLCdeclCallbackProcs = rb_ary_new();
rb_define_const(rb_mDL, "CdeclCallbackProcs", tmp);
tmp = rb_DLCdeclCallbackAddrs = rb_ary_new();
rb_define_const(rb_mDL, "CdeclCallbackAddrs", tmp);
#ifdef FUNC_STDCALL
tmp = rb_DLStdcallCallbackProcs = rb_ary_new();
rb_define_const(rb_mDL, "StdcallCallbackProcs", tmp);
tmp = rb_DLStdcallCallbackAddrs = rb_ary_new();
rb_define_const(rb_mDL, "StdcallCallbackAddrs", tmp);
#endif
#{
(0...MAX_DLTYPE).collect{|ty|
" rb_dl_init_callbacks_#{ty}();"
}.join("\n")
}
}
EOS
$out.close
for filename, body in callbacks
open(filename, "wb") {|f| f.puts body}
end
|
