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
|
#include <config.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <pthread.h>
#include "red_common.h"
#include "dispatcher.h"
#include "main_dispatcher.h"
#include "red_channel.h"
#include "reds.h"
/*
* Main Dispatcher
* ===============
*
* Communication channel between any non main thread and the main thread.
*
* The main thread is that from which spice_server_init is called.
*
* Messages are single sized, sent from the non-main thread to the main-thread.
* No acknowledge is sent back. This prevents a possible deadlock with the main
* thread already waiting on a response for the existing red_dispatcher used
* by the worker thread.
*
* All events have three functions:
* main_dispatcher_<event_name> - non static, public function
* main_dispatcher_self_<event_name> - handler for main thread
* main_dispatcher_handle_<event_name> - handler for callback from main thread
* seperate from self because it may send an ack or do other work in the future.
*/
typedef struct {
Dispatcher base;
SpiceCoreInterface *core;
} MainDispatcher;
MainDispatcher main_dispatcher;
enum {
MAIN_DISPATCHER_CHANNEL_EVENT = 0,
MAIN_DISPATCHER_MIGRATE_SEAMLESS_DST_COMPLETE,
MAIN_DISPATCHER_SET_MM_TIME_LATENCY,
MAIN_DISPATCHER_NUM_MESSAGES
};
typedef struct MainDispatcherChannelEventMessage {
int event;
SpiceChannelEventInfo *info;
} MainDispatcherChannelEventMessage;
typedef struct MainDispatcherMigrateSeamlessDstCompleteMessage {
RedClient *client;
} MainDispatcherMigrateSeamlessDstCompleteMessage;
typedef struct MainDispatcherMmTimeLatencyMessage {
RedClient *client;
uint32_t latency;
} MainDispatcherMmTimeLatencyMessage;
/* channel_event - calls core->channel_event, must be done in main thread */
static void main_dispatcher_self_handle_channel_event(
int event,
SpiceChannelEventInfo *info)
{
reds_handle_channel_event(event, info);
}
static void main_dispatcher_handle_channel_event(void *opaque,
void *payload)
{
MainDispatcherChannelEventMessage *channel_event = payload;
main_dispatcher_self_handle_channel_event(channel_event->event,
channel_event->info);
}
void main_dispatcher_channel_event(int event, SpiceChannelEventInfo *info)
{
MainDispatcherChannelEventMessage msg = {0,};
if (pthread_self() == main_dispatcher.base.self) {
main_dispatcher_self_handle_channel_event(event, info);
return;
}
msg.event = event;
msg.info = info;
dispatcher_send_message(&main_dispatcher.base, MAIN_DISPATCHER_CHANNEL_EVENT,
&msg);
}
static void main_dispatcher_handle_migrate_complete(void *opaque,
void *payload)
{
MainDispatcherMigrateSeamlessDstCompleteMessage *mig_complete = payload;
reds_on_client_seamless_migrate_complete(mig_complete->client);
}
static void main_dispatcher_handle_mm_time_latency(void *opaque,
void *payload)
{
MainDispatcherMmTimeLatencyMessage *msg = payload;
reds_set_client_mm_time_latency(msg->client, msg->latency);
}
void main_dispatcher_seamless_migrate_dst_complete(RedClient *client)
{
MainDispatcherMigrateSeamlessDstCompleteMessage msg;
if (pthread_self() == main_dispatcher.base.self) {
reds_on_client_seamless_migrate_complete(client);
return;
}
msg.client = client;
dispatcher_send_message(&main_dispatcher.base, MAIN_DISPATCHER_MIGRATE_SEAMLESS_DST_COMPLETE,
&msg);
}
void main_dispatcher_set_mm_time_latency(RedClient *client, uint32_t latency)
{
MainDispatcherMmTimeLatencyMessage msg;
if (pthread_self() == main_dispatcher.base.self) {
reds_set_client_mm_time_latency(client, latency);
return;
}
msg.client = client;
msg.latency = latency;
dispatcher_send_message(&main_dispatcher.base, MAIN_DISPATCHER_SET_MM_TIME_LATENCY,
&msg);
}
static void dispatcher_handle_read(int fd, int event, void *opaque)
{
Dispatcher *dispatcher = opaque;
dispatcher_handle_recv_read(dispatcher);
}
void main_dispatcher_init(SpiceCoreInterface *core)
{
memset(&main_dispatcher, 0, sizeof(main_dispatcher));
main_dispatcher.core = core;
dispatcher_init(&main_dispatcher.base, MAIN_DISPATCHER_NUM_MESSAGES, &main_dispatcher.base);
core->watch_add(main_dispatcher.base.recv_fd, SPICE_WATCH_EVENT_READ,
dispatcher_handle_read, &main_dispatcher.base);
dispatcher_register_handler(&main_dispatcher.base, MAIN_DISPATCHER_CHANNEL_EVENT,
main_dispatcher_handle_channel_event,
sizeof(MainDispatcherChannelEventMessage), 0 /* no ack */);
dispatcher_register_handler(&main_dispatcher.base, MAIN_DISPATCHER_MIGRATE_SEAMLESS_DST_COMPLETE,
main_dispatcher_handle_migrate_complete,
sizeof(MainDispatcherMigrateSeamlessDstCompleteMessage), 0 /* no ack */);
dispatcher_register_handler(&main_dispatcher.base, MAIN_DISPATCHER_SET_MM_TIME_LATENCY,
main_dispatcher_handle_mm_time_latency,
sizeof(MainDispatcherMmTimeLatencyMessage), 0 /* no ack */);
}
|
