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 | --
-- Copyright (C) 2018-2023, AdaCore
--
-- SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
--
pragma Warnings (Off, "internal GNAT unit");
with System.OS_Interface;
pragma Warnings (On);
with Spawn.Internal.Monitor;
with Spawn.Posix;
package body Spawn.Internal is
use all type Spawn.Common.Pipe_Kinds;
package body Environments is
---------
-- "=" --
---------
function "=" (Left, Right : UTF_8_String) return Boolean is
begin
return Standard."=" (Left, Right);
end "=";
---------
-- "<" --
---------
function "<" (Left, Right : UTF_8_String) return Boolean is
begin
return Standard."<" (Left, Right);
end "<";
end Environments;
--------------------------
-- Close_Standard_Error --
--------------------------
procedure Close_Standard_Error (Self : in out Process'Class) is
begin
Monitor.Enqueue ((Monitor.Close_Pipe, Self'Unchecked_Access, Stderr));
end Close_Standard_Error;
--------------------------
-- Close_Standard_Input --
--------------------------
procedure Close_Standard_Input (Self : in out Process'Class) is
begin
Monitor.Enqueue ((Monitor.Close_Pipe, Self'Unchecked_Access, Stdin));
end Close_Standard_Input;
---------------------------
-- Close_Standard_Output --
---------------------------
procedure Close_Standard_Output (Self : in out Process'Class) is
begin
Monitor.Enqueue ((Monitor.Close_Pipe, Self'Unchecked_Access, Stdout));
end Close_Standard_Output;
--------------
-- Finalize --
--------------
overriding procedure Finalize (Self : in out Process) is
begin
if Self.Status = Running then
raise Program_Error;
end if;
end Finalize;
----------------
-- Identifier --
----------------
function Identifier (Self : Process'Class) return String is
use type Interfaces.C.int;
Image : constant String := Self.pid'Image;
begin
return (if Self.pid = 0 then "" else Image (2 .. Image'Last));
end Identifier;
------------------
-- Kill_Process --
------------------
procedure Kill_Process (Self : in out Process'Class) is
use type Interfaces.C.int;
Code : constant Interfaces.C.int :=
Spawn.Posix.kill
(Self.pid, Interfaces.C.int (System.OS_Interface.SIGKILL));
begin
pragma Assert (Code = 0);
end Kill_Process;
----------------
-- Loop_Cycle --
----------------
procedure Loop_Cycle (Timeout : Duration)
renames Spawn.Internal.Monitor.Loop_Cycle;
-------------------------
-- Read_Standard_Error --
-------------------------
procedure Read_Standard_Error
(Self : in out Process'Class;
Data : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset;
Success : in out Boolean)
is
use type Ada.Streams.Stream_Element_Offset;
begin
if Self.Status /= Running then
Last := Data'First - 1;
return;
end if;
Spawn.Channels.Read (Self.Channels, Stderr, Data, Last, Success);
if Success and Last = Data'First - 1 then
Monitor.Enqueue
((Monitor.Watch_Pipe, Self'Unchecked_Access, Stderr));
end if;
end Read_Standard_Error;
--------------------------
-- Read_Standard_Output --
--------------------------
procedure Read_Standard_Output
(Self : in out Process'Class;
Data : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset;
Success : in out Boolean)
is
use type Ada.Streams.Stream_Element_Offset;
begin
if Self.Status /= Running then
Last := Data'First - 1;
return;
end if;
Spawn.Channels.Read (Self.Channels, Stdout, Data, Last, Success);
if Success and Last = Data'First - 1 then
Monitor.Enqueue
((Monitor.Watch_Pipe, Self'Unchecked_Access, Stdout));
end if;
end Read_Standard_Output;
-----------
-- Start --
-----------
procedure Start (Self : in out Process'Class) is
begin
Self.Status := Starting;
Self.Exit_Code := -1;
Monitor.Enqueue ((Monitor.Start, Self'Unchecked_Access));
end Start;
-----------------------
-- Terminate_Process --
-----------------------
procedure Terminate_Process (Self : in out Process'Class) is
use type Interfaces.C.int;
Code : constant Interfaces.C.int :=
Spawn.Posix.kill
(Self.pid, Interfaces.C.int (System.OS_Interface.SIGTERM));
begin
pragma Assert (Code = 0);
end Terminate_Process;
--------------------------
-- Write_Standard_Input --
--------------------------
procedure Write_Standard_Input
(Self : in out Process'Class;
Data : Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset;
Success : in out Boolean)
is
use type Ada.Streams.Stream_Element_Offset;
begin
if Self.Status /= Running then
Last := Data'First - 1;
return;
end if;
Spawn.Channels.Write_Stdin (Self.Channels, Data, Last, Success);
if Success and Last /= Data'Length then
Monitor.Enqueue ((Monitor.Watch_Pipe, Self'Unchecked_Access, Stdin));
end if;
end Write_Standard_Input;
end Spawn.Internal;
|