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
|
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//
// copyright : (C) 2008 by Eran Ifrah
// file name : worker_thread.cpp
//
// -------------------------------------------------------------------------
// A
// _____ _ _ _ _
// / __ \ | | | | (_) |
// | / \/ ___ __| | ___| | _| |_ ___
// | | / _ \ / _ |/ _ \ | | | __/ _ )
// | \__/\ (_) | (_| | __/ |___| | || __/
// \____/\___/ \__,_|\___\_____/_|\__\___|
//
// F i l e
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
#include "asyncprocess.h"
#include "processreaderthread.h"
wxDEFINE_EVENT(wxEVT_ASYNC_PROCESS_OUTPUT, clProcessEvent);
wxDEFINE_EVENT(wxEVT_ASYNC_PROCESS_STDERR, clProcessEvent);
wxDEFINE_EVENT(wxEVT_ASYNC_PROCESS_TERMINATED, clProcessEvent);
#if defined(__WXGTK__) || defined(__WXMAC__)
#include <sys/wait.h>
#endif
ProcessReaderThread::ProcessReaderThread()
: wxThread(wxTHREAD_JOINABLE)
, m_notifiedWindow(NULL)
, m_process(NULL)
{
m_suspend.store(false);
m_is_suspended.store(false);
}
ProcessReaderThread::~ProcessReaderThread() { m_notifiedWindow = NULL; }
void* ProcessReaderThread::Entry()
{
while(true) {
// Did we get a request to terminate?
if(TestDestroy()) {
break;
}
if(m_suspend.load() && (m_is_suspended.load() == false)) {
// request to suspend thread, but the status is not suspended
m_is_suspended.store(true);
} else if(m_is_suspended.load() && m_suspend.load() == false) {
// request to resume thread but the status is suspended
m_is_suspended.store(false);
}
if(m_is_suspended.load()) {
wxThread::Sleep(5);
continue;
}
if(m_process) {
wxString buff;
wxString buffErr;
if(m_process->IsRedirect()) {
if(m_process->Read(buff, buffErr)) {
if(!buff.IsEmpty() || !buffErr.IsEmpty()) {
// If we got a callback object, use it
if(m_process && m_process->GetCallback()) {
m_process->GetCallback()->CallAfter(&IProcessCallback::OnProcessOutput, buff);
} else {
// We fire an event per data (stderr/stdout)
if(!buff.IsEmpty() && m_notifiedWindow) {
// fallback to the event system
// we got some data, send event to parent
clProcessEvent e(wxEVT_ASYNC_PROCESS_OUTPUT);
wxString& b = const_cast<wxString&>(e.GetOutput());
b.swap(buff);
e.SetProcess(m_process);
m_notifiedWindow->AddPendingEvent(e);
}
if(!buffErr.IsEmpty() && m_notifiedWindow) {
// we got some data, send event to parent
clProcessEvent e(wxEVT_ASYNC_PROCESS_STDERR);
wxString& b = const_cast<wxString&>(e.GetOutput());
b.swap(buffErr);
e.SetProcess(m_process);
m_notifiedWindow->AddPendingEvent(e);
}
}
}
} else {
// Process terminated, exit
// If we got a callback object, use it
NotifyTerminated();
break;
}
} else {
// Check if the process is alive
if(!m_process->IsAlive()) {
// Notify about termination
NotifyTerminated();
break;
} else {
wxThread::Sleep(5);
}
}
} else {
// No process??
break;
}
}
m_process = NULL;
return NULL;
}
void ProcessReaderThread::Stop()
{
// Notify the thread to exit and
// wait for it
if(IsAlive()) {
Delete(NULL, wxTHREAD_WAIT_BLOCK);
} else {
Wait(wxTHREAD_WAIT_BLOCK);
}
}
void ProcessReaderThread::Start(int priority)
{
Create();
SetPriority(priority);
Run();
}
void ProcessReaderThread::NotifyTerminated()
{
// Process terminated, exit
// If we got a callback object, use it
if(m_process && m_process->GetCallback()) {
m_process->GetCallback()->CallAfter(&IProcessCallback::OnProcessTerminated);
} else {
// fallback to the event system
clProcessEvent e(wxEVT_ASYNC_PROCESS_TERMINATED);
e.SetProcess(m_process);
if(m_notifiedWindow) {
m_notifiedWindow->AddPendingEvent(e);
}
}
}
void ProcessReaderThread::Suspend()
{
m_suspend.store(true);
// wait until we make sure that the reader thread is suspended
while(true) {
if(m_is_suspended.load()) {
break;
}
wxThread::Sleep(1);
}
}
void ProcessReaderThread::Resume()
{
m_suspend.store(false);
// wait until we make sure that the reader thread is resumed
while(true) {
if(!m_is_suspended.load()) {
break;
}
wxThread::Sleep(1);
}
}
|
