blob: 9a402f45a0c2b26d71b48ca347baf47621c7fd52 (
plain)
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
|
// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
#include "element_impl.hpp"
#include <gras/top_block.hpp>
#include <boost/thread/thread.hpp> //sleep
using namespace gras;
GlobalBlockConfig::GlobalBlockConfig(void)
{
maximum_output_items = 0;
buffer_affinity = -1;
}
TopBlock::TopBlock(void)
{
//NOP
}
TopBlock::TopBlock(const std::string &name):
HierBlock(name)
{
(*this)->executor = boost::shared_ptr<Apology::Executor>(new Apology::Executor((*this)->topology.get()));
(*this)->token = Token::make();
(*this)->thread_group = SharedThreadGroup(new boost::thread_group());
if (GENESIS) std::cerr
<< "===================================================\n"
<< "== Top Block Created: " << name << "\n"
<< "===================================================\n"
<< std::flush;
}
TopBlock::~TopBlock(void)
{
//NOP
}
void ElementImpl::top_block_cleanup(void)
{
this->bcast_prio_msg(TopInertMessage());
this->topology->clear_all();
this->executor->commit();
if (ARMAGEDDON) std::cerr
<< "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\n"
<< "xx Top Block Destroyed: " << name << "\n"
<< "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\n"
<< std::flush;
}
const GlobalBlockConfig &TopBlock::global_config(void) const
{
return (*this)->top_config;
}
GlobalBlockConfig &TopBlock::global_config(void)
{
return (*this)->top_config;
}
void TopBlock::commit(void)
{
this->start(); //ok to re-start, means update
}
void TopBlock::start(void)
{
(*this)->executor->commit();
{
(*this)->executor->post_all((*this)->thread_group);
}
{
TopTokenMessage message;
message.token = (*this)->token;
(*this)->executor->post_all(message);
}
{
//send the global block config before alloc
(*this)->executor->post_all((*this)->top_config);
}
{
(*this)->executor->post_all(TopAllocMessage());
}
{
TopActiveMessage message;
(*this)->executor->post_all(message);
}
}
void TopBlock::stop(void)
{
//interrupt these "special" threads
(*this)->thread_group->interrupt_all();
//message all blocks to mark done
(*this)->bcast_prio_msg(TopInertMessage());
}
void TopBlock::run(void)
{
this->start();
this->wait();
}
GRAS_FORCE_INLINE void wait_thread_yield(void)
{
//boost::this_thread::yield();
boost::this_thread::sleep(boost::posix_time::milliseconds(1));
}
void TopBlock::wait(void)
{
//We do not need to join "special" threads;
//the token mechainism will do just fine.
//FIXME it might be nice to uncomment this for some nice quiet wait(),
//however, thread group cant be joined twice and this breaks some qa code
//(*this)->thread_group->join_all();
//wait for all blocks to release the token
while (not (*this)->token.unique())
{
wait_thread_yield();
}
}
bool TopBlock::wait(const double timeout)
{
const boost::system_time exit_time = boost::get_system_time() +
boost::posix_time::microseconds(long(timeout*1e6));
//wait for all blocks to release the token
while (not (*this)->token.unique() or boost::get_system_time() < exit_time)
{
wait_thread_yield();
}
return (*this)->token.unique();
}
|
