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
|
/* $Id: Work.c,v 1.12 2004/01/05 16:50:25 titer Exp $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.m0k.org/>.
It may be used under the terms of the GNU General Public License. */
#include "HBInternal.h"
/* Local prototypes */
static void WorkThread( void * t );
struct HBWork
{
HB_WORK_COMMON_MEMBERS
};
struct HBWorkThread
{
HBHandle * handle;
HBList * workList;
int firstThread;
volatile int die;
HBThread * thread;
};
HBWorkThread * HBWorkThreadInit( HBHandle * handle, HBTitle * title,
int firstThread )
{
int i;
HBWork * w;
HBAudio * audio;
HBWorkThread * t;
if( !( t = malloc( sizeof( HBWorkThread ) ) ) )
{
HBLog( "HBWorkThreadInit: malloc() failed, gonna crash" );
return NULL;
}
t->handle = handle;
/* Build a list of work objects. They all include
HB_WORK_COMMON_MEMBERS, so we'll be able to do the job without
knowing what each one actually does */
t->workList = HBListInit();
HBListAdd( t->workList, title->decoder );
HBListAdd( t->workList, title->scale );
HBListAdd( t->workList, title->encoder );
for( i = 0; i < HBListCount( title->ripAudioList ); i++ )
{
audio = HBListItemAt( title->ripAudioList, i );
HBListAdd( t->workList, audio->decoder );
HBListAdd( t->workList, audio->encoder );
}
t->firstThread = firstThread;
/* Work objects are not thread-safe, so let's init locks so each
one can not be called anymore when it's doing something. This
is done by the first worker thread (see HBStartRip) */
if( t->firstThread )
{
for( i = 0; i < HBListCount( t->workList ); i++ )
{
w = (HBWork*) HBListItemAt( t->workList, i );
w->lock = HBLockInit();
w->used = 0;
w->time = 0;
}
}
/* Actually launch the thread */
t->die = 0;
t->thread = HBThreadInit( "work thread", WorkThread, t,
HB_LOW_PRIORITY );
return t;
}
void HBWorkThreadClose( HBWorkThread ** _t )
{
HBWorkThread * t = (*_t);
HBWork * w;
/* Stop the thread */
t->die = 1;
HBThreadClose( &t->thread );
/* Destroy locks, show stats */
if( t->firstThread )
{
int i;
uint64_t total = 0;
for( i = 0; i < HBListCount( t->workList ); i++ )
{
w = (HBWork*) HBListItemAt( t->workList, i );
HBLockClose( &w->lock );
total += w->time;
}
for( i = 0; i < HBListCount( t->workList ); i++ )
{
w = (HBWork*) HBListItemAt( t->workList, i );
HBLog( "HBWorkThreadClose: %- 9s = %05.2f %%", w->name,
100.0 * w->time / total );
}
}
/* Free memory */
HBListClose( &t->workList );
free( t );
*_t = NULL;
}
static void WorkThread( void * _t )
{
HBWorkThread * t = (HBWorkThread*) _t;
HBWork * w;
int didSomething, i;
uint64_t date;
didSomething = 0;
for( i = 0; !t->die; i++ )
{
HBCheckPaused( t->handle );
if( i == HBListCount( t->workList ) )
{
/* If nothing could be done, wait a bit to prevent a useless
CPU-consuming loop */
if( !didSomething )
{
HBSnooze( 5000 );
}
didSomething = 0;
i = 0;
}
w = (HBWork*) HBListItemAt( t->workList, i );
/* Check if another thread isn't using this work object */
HBLockLock( w->lock );
if( w->used )
{
/* It's in use. Forget about this one and try the next
one */
HBLockUnlock( w->lock );
continue;
}
/* It's unused, lock it */
w->used = 1;
HBLockUnlock( w->lock );
/* Do the job */
date = HBGetDate();
if( w->work( w ) )
{
w->time += HBGetDate() - date;
didSomething = 1;
}
/* Unlock it */
HBLockLock( w->lock );
w->used = 0;
HBLockUnlock( w->lock );
}
}
|
