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
|
<!--plsfield:text-->
<HTML><HEAD>
<TITLE>C API Reference -- Ns_BeginThread</TITLE>
<LINK rel=Previous href="c-ch13.htm">
<LINK rel=ToC href="toc.htm">
<LINK rel=Index href="master.htm">
<LINK rel=Next href="c-ch15.htm">
</HEAD><BODY BGCOLOR="#ffffff"><A NAME="topofpage"></A>
<TABLE WIDTH=100%>
<TR>
<TD ALIGN=LEFT>
<A NAME="topofpage"></A> <IMG SRC="as-c-sm.gif">
</TD>
<TD ALIGN=RIGHT>
<A href="c-ch13.htm"><IMG BORDER="0" src=navbprev.gif alt="[ Previous ]"></A>
<A href=toc.htm> <IMG BORDER="0" src=navbhome.gif alt="[ Contents ]"></A>
<A href=master.htm> <IMG BORDER="0" src=navbhelp.gif alt="[ Index ]"></A>
<A href="c-ch15.htm"> <IMG BORDER="0" src=navbnext.gif alt="[ Next ]"></A>
<A name="7983"> </A>
</TD>
</TR>
</TABLE>
<a name="201235">
</a><h3>Ns_BeginThread</h3>
<a name="132261">
</a><h4>Overview</h4>
Start a thread
<a name="132262">
</a><a name="132263">
</a><h4>Syntax</h4>
<pre> <a name="65201"></a>int Ns_BeginThread(
<a name="65202"></a>Ns_ThreadProc *start_routine,
<a name="65203"></a>void *arg,
<a name="65204"></a>Ns_Thread *thread
<a name="65205"></a>);
</pre><p><a name="133617">
</a><h4>Description</h4>
<p><a name="65207">
</a>Ns_BeginThread starts a new thread running start_routine and passwd arg as its context. If thread is non-null it will be filled with the thread's id. (see Ns_WaitForThread.)</p>
<p><a name="767551">
</a>Ns_ThreadCreate is the preferred function to start a thread.</p>
<a name="201350">
</a><h4>Examples</h4>
<pre> <a name="201351"></a>static void
<a name="201352"></a>ThreadStart(void *arg)
<a name="201353"></a>{
<a name="201354"></a> int n;
<a name="201355"></a>
<a name="201356"></a> n = (int) arg;
<a name="201357"></a> Ns_Log(Notice, "%d: %d", Ns_GetThreadId(), n);
<a name="201358"></a>}
<a name="201359"></a>
<a name="201360"></a>/*
<a name="201361"></a> * ManyThreadWait - Create 10 threads which all log a message
<a name="201379"></a> * and wait for all of them to exit.
<a name="201362"></a> */
<a name="201363"></a>static void
<a name="201364"></a>ManyThreadWait(void)
<a name="201365"></a>{
<a name="201366"></a> int i;
<a name="201374"></a> Ns_Thread tids[10];
<a name="201367"></a>
<a name="201368"></a> for (i = 0; i < 10; ++i) {
<a name="201369"></a> Ns_BeginThread(ThreadStart, (void *) i, &tids[i]);
<a name="201370"></a> }
<a name="201375"></a>
<a name="201376"></a> for (i = 0; i < 10; ++i) {
<a name="201377"></a> Ns_WaitForThread(&tids[i]);
<a name="201378"></a> }
<a name="201371"></a>}
</pre><p>
<TABLE BORDER="2" CELLPADDING="1" width="100%">
<TR><TD COLSPAN=3><P ALIGN=Center>
<IMG SRC="bluebult.gif">
<A HREF="#topofpage">
<FONT SIZE=-1>Top of Page</FONT></A>
<IMG SRC="bluebult.gif">
</TD></TR>
<TR><TD COLSPAN=3><P ALIGN=Center>
<A href="c-ch13.htm">
<IMG BORDER="0" src=navbprev.gif alt="[ Previous ]"></A>
<A href=toc.htm>
<IMG BORDER="0" src=navbhome.gif alt="[ Contents ]"></A>
<A href=master.htm>
<IMG BORDER="0" src=navbhelp.gif alt="[ Index ]"></A>
<A href="c-ch15.htm">
<IMG BORDER="0" src=navbnext.gif alt="[ Next ]"></A>
<BR align=center>
<FONT size=-1>Copyright © 1998-99 America Online,
Inc.</FONT>
</TD></TR></TABLE></BODY></HTML><!--plsfield:end-->
|
