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
|
/**
* @file llpluginprocessparent.h
* @brief LLPluginProcessParent handles the parent side of the external-process plugin API.
*
* @cond
* $LicenseInfo:firstyear=2008&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
* @endcond
*/
#ifndef LL_LLPLUGINPROCESSPARENT_H
#define LL_LLPLUGINPROCESSPARENT_H
#include <queue>
#include <boost/enable_shared_from_this.hpp>
#include "llapr.h"
#include "llprocess.h"
#include "llpluginmessage.h"
#include "llpluginmessagepipe.h"
#include "llpluginsharedmemory.h"
#include "lliosocket.h"
#include "llthread.h"
#include "llsd.h"
#include "llevents.h"
class LLPluginProcessParentOwner : public std::enable_shared_from_this < LLPluginProcessParentOwner >
{
public:
virtual ~LLPluginProcessParentOwner();
virtual void receivePluginMessage(const LLPluginMessage &message) = 0;
virtual bool receivePluginMessageEarly(const LLPluginMessage &message) {return false;};
// This will only be called when the plugin has died unexpectedly
virtual void pluginLaunchFailed() {};
virtual void pluginDied() {};
};
class LLPluginProcessParent : public LLPluginMessagePipeOwner
{
LOG_CLASS(LLPluginProcessParent);
LLPluginProcessParent(LLPluginProcessParentOwner *owner);
public:
typedef std::shared_ptr<LLPluginProcessParent> ptr_t;
~LLPluginProcessParent();
void init(const std::string &launcher_filename,
const std::string &plugin_dir,
const std::string &plugin_filename,
bool debug);
// Creates a process
// returns true if process already exists or if created,
// false if failed to create
bool createPluginProcess();
void idle(void);
// returns true if the plugin is on its way to steady state
bool isLoading(void);
// returns true if the plugin is in the steady state (processing messages)
bool isRunning(void);
// returns true if the process has exited or we've had a fatal error
bool isDone(void);
// returns true if the process is currently waiting on a blocking request
bool isBlocked(void) { return mBlocked; };
void killSockets(void);
// Go to the proper error state
void errorState(void);
void setSleepTime(F64 sleep_time, bool force_send = false);
F64 getSleepTime(void) const { return mSleepTime; };
void sendMessage(const LLPluginMessage &message);
void receiveMessage(const LLPluginMessage &message);
static ptr_t create(LLPluginProcessParentOwner *owner);
void requestShutdown();
// Inherited from LLPluginMessagePipeOwner
/*virtual*/ void receiveMessageRaw(const std::string &message);
/*virtual*/ void receiveMessageEarly(const LLPluginMessage &message);
/*virtual*/ void setMessagePipe(LLPluginMessagePipe *message_pipe) ;
// This adds a memory segment shared with the client, generating a name for the segment. The name generated is guaranteed to be unique on the host.
// The caller must call removeSharedMemory first (and wait until getSharedMemorySize returns 0 for the indicated name) before re-adding a segment with the same name.
std::string addSharedMemory(size_t size);
// Negotiates for the removal of a shared memory segment. It is the caller's responsibility to ensure that nothing touches the memory
// after this has been called, since the segment will be unmapped shortly thereafter.
void removeSharedMemory(const std::string &name);
size_t getSharedMemorySize(const std::string &name);
void *getSharedMemoryAddress(const std::string &name);
// Returns the version string the plugin indicated for the message class, or an empty string if that class wasn't in the list.
std::string getMessageClassVersion(const std::string &message_class);
std::string getPluginVersion(void);
bool getDisableTimeout() { return mDisableTimeout; };
void setDisableTimeout(bool disable) { mDisableTimeout = disable; };
void setLaunchTimeout(F32 timeout) { mPluginLaunchTimeout = timeout; };
void setLockupTimeout(F32 timeout) { mPluginLockupTimeout = timeout; };
F64 getCPUUsage() { return mCPUUsage; };
static void poll(F64 timeout);
static bool canPollThreadRun() { return (sPollSet || sPollsetNeedsRebuild || sUseReadThread); };
static void setUseReadThread(bool use_read_thread);
static bool getUseReadThread() { return sUseReadThread; };
static void shutdown();
private:
typedef std::map<void *, ptr_t> mapInstances_t;
enum EState
{
STATE_UNINITIALIZED,
STATE_INITIALIZED, // init() has been called
STATE_LISTENING, // listening for incoming connection
STATE_LAUNCHED, // process has been launched
STATE_CONNECTED, // process has connected
STATE_HELLO, // first message from the plugin process has been received
STATE_LOADING, // process has been asked to load the plugin
STATE_RUNNING, //
STATE_GOODBYE,
STATE_LAUNCH_FAILURE, // Failure before plugin loaded
STATE_ERROR, // generic bailout state
STATE_CLEANUP, // clean everything up
STATE_EXITING, // Tried to kill process, waiting for it to exit
STATE_DONE //
};
EState mState;
void setState(EState state);
bool wantsPolling() const;
void removeFromProcessing();
bool pluginLockedUp();
bool pluginLockedUpOrQuit();
bool accept();
void clearProcessCreationThread();
LLSocket::ptr_t mListenSocket;
LLSocket::ptr_t mSocket;
U32 mBoundPort;
LLProcess::Params mProcessParams;
LLProcessPtr mProcess;
LLThread *pProcessCreationThread;
std::string mPluginFile;
std::string mPluginDir;
LLPluginProcessParentOwner *mOwner;
typedef std::map<std::string, LLPluginSharedMemory*> sharedMemoryRegionsType;
sharedMemoryRegionsType mSharedMemoryRegions;
LLSD mMessageClassVersions;
std::string mPluginVersionString;
LLTimer mHeartbeat;
F64 mSleepTime;
F64 mCPUUsage;
bool mDisableTimeout;
bool mDebug;
bool mBlocked;
bool mPolledInput;
LLProcessPtr mDebugger;
F32 mPluginLaunchTimeout; // Somewhat longer timeout for initial launch.
F32 mPluginLockupTimeout; // If we don't receive a heartbeat in this many seconds, we declare the plugin locked up.
static bool sUseReadThread;
apr_pollfd_t mPollFD;
static apr_pollset_t *sPollSet;
static bool sPollsetNeedsRebuild;
static LLMutex *sInstancesMutex;
static mapInstances_t sInstances;
static void dirtyPollSet();
static void updatePollset();
void servicePoll();
static LLThread *sReadThread;
LLTempBoundListener mPolling;
bool pollTick();
LLMutex mIncomingQueueMutex;
std::queue<LLPluginMessage> mIncomingQueue;
};
#endif // LL_LLPLUGINPROCESSPARENT_H
|
