1 // Copyright (C) 2013 Vicente Botet
2 //
3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5
6 // B
7
8 #include <malloc.h>
9 #include <boost/thread/thread.hpp>
10
11 #include <boost/thread/mutex.hpp>
12
13 #include <boost/bind.hpp>
14
15 #include <iostream>
16
17 static void
display_mallinfo()18 display_mallinfo()
19 {
20 struct mallinfo mi;
21
22 mi = mallinfo();
23
24 printf("Total non-mmapped bytes (arena): %d\n", mi.arena);
25 printf("# of free chunks (ordblks): %d\n", mi.ordblks);
26 printf("# of free fastbin blocks (smblks): %d\n", mi.smblks);
27 printf("# of mapped regions (hblks): %d\n", mi.hblks);
28 printf("Bytes in mapped regions (hblkhd): %d\n", mi.hblkhd);
29 printf("Max. total allocated space (usmblks): %d\n", mi.usmblks);
30 printf("Free bytes held in fastbins (fsmblks): %d\n", mi.fsmblks);
31 printf("Total allocated space (uordblks): %d\n", mi.uordblks);
32 printf("Total free space (fordblks): %d\n", mi.fordblks);
33 printf("Topmost releasable block (keepcost): %d\n", mi.keepcost);
34 }
35
36 boost::mutex io_mutex;
37
count()38 void count() {
39
40 for (int i = 0; i < 10; ++i) {
41
42 boost::mutex::scoped_lock lock(io_mutex);
43
44 //boost::this_thread::sleep( boost::posix_time::milliseconds( 100 ) );
45
46 }
47
48 }
count2(void *)49 void* count2(void*) {
50
51 for (int i = 0; i < 10; ++i) {
52
53 boost::mutex::scoped_lock lock(io_mutex);
54
55 boost::this_thread::sleep( boost::posix_time::milliseconds( 100 ) );
56
57 }
58 return 0;
59 }
60
main()61 int main() {
62 printf("\n============== sizeof(boost::thread) ============== %d\n", sizeof(boost::thread));
63 printf("\n============== sizeof(boost::detail::thread_data_base) ============== %d\n", sizeof(boost::detail::thread_data_base));
64 printf("\n============== sizeof(boost::detail::thread_data<>) ============== %d\n", sizeof(boost::detail::thread_data<void(*)()>));
65 printf("\n============== Before thread creation ==============\n");
66 display_mallinfo();
67 {
68 boost::thread thrd1(&count);
69
70 printf("\n============== After thread creation ==============\n");
71 display_mallinfo();
72
73 boost::thread thrd2(&count);
74 printf("\n============== After thread creation ==============\n");
75 display_mallinfo();
76 boost::thread thrd3(&count);
77 printf("\n============== After thread creation ==============\n");
78 display_mallinfo();
79
80 thrd1.join();
81 printf("\n============== After thread join ==============\n");
82 display_mallinfo();
83
84 thrd2.join();
85 printf("\n============== After thread join ==============\n");
86 display_mallinfo();
87 thrd3.join();
88 printf("\n============== After thread join ==============\n");
89 display_mallinfo();
90 }
91 printf("\n============== After thread destruction ==============\n");
92 display_mallinfo();
93
94 {
95 pthread_attr_t attr;
96 pthread_attr_init(&attr);
97
98 pthread_t thrd1;
99 pthread_create(&thrd1, &attr, &count2, 0);
100 printf("\n============== After thread creation ==============\n");
101 display_mallinfo();
102
103 pthread_t thrd2;
104 pthread_create(&thrd2, &attr, &count2, 0);
105 printf("\n============== After thread creation ==============\n");
106 display_mallinfo();
107
108 pthread_t thrd3;
109 pthread_create(&thrd3, &attr, &count2, 0);
110 printf("\n============== After thread creation ==============\n");
111 display_mallinfo();
112
113 pthread_attr_destroy(&attr);
114 printf("\n============== After thread attr destroy ==============\n");
115 display_mallinfo();
116
117 void* res;
118 pthread_join(thrd3, &res);
119 printf("\n============== After thread join ==============\n");
120 display_mallinfo();
121
122 pthread_join(thrd2, &res);
123 printf("\n============== After thread join ==============\n");
124 display_mallinfo();
125 pthread_join(thrd1, &res);
126 printf("\n============== After thread join ==============\n");
127 display_mallinfo();
128
129
130
131 //pthread_destroy(&thrd1);
132 //pthread_destroy(&thrd2);
133 //pthread_destroy(&thrd3);
134 }
135 printf("\n============== After thread destruction ==============\n");
136 display_mallinfo();
137
138 return 1;
139
140 }
141