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loophole allows for union, right?<BR>
I know there is widechar, point was, if some hypothetical platform without atomic widechar.<BR>
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- Jay<BR><BR> <BR>
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From: hosking@cs.purdue.edu<BR>Date: Thu, 11 Feb 2010 11:53:24 -0500<BR>To: jay.krell@cornell.edu<BR>CC: m3devel@elegosoft.com<BR>Subject: Re: [M3devel] atomics questions<BR><BR><BASE>
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<DIV><SPAN style="FONT-SIZE: medium" class=ecxApple-style-span>On 11 Feb 2010, at 07:11, Jay K wrote:</SPAN></DIV></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></DIV></SPAN></SPAN></DIV>
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<DIV style="FONT-FAMILY: Verdana; FONT-SIZE: 10pt" class=ecxhmmessage>What if some atomic operations aren't available?<BR> <BR> <BR>If none are available, then they can all fallback to one giant lock.<BR> <BR></DIV></SPAN></BLOCKQUOTE>
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<DIV>Correct.</DIV><BR>
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<DIV style="FONT-FAMILY: Verdana; FONT-SIZE: 10pt" class=ecxhmmessage> <BR>But what if some are and some aren't?<BR></DIV></SPAN></BLOCKQUOTE>
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<DIV style="FONT-FAMILY: Verdana; FONT-SIZE: 10pt" class=ecxhmmessage>A lock per type?<BR></DIV></SPAN></BLOCKQUOTE>
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<DIV>Yes. Definitely. No unions in M3.</DIV><BR>
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<DIV style="FONT-FAMILY: Verdana; FONT-SIZE: 10pt" class=ecxhmmessage> <BR>That fails with like<BR> union {<BR> short s[2];<BR> int i;<BR>} u;<BR> <BR> <BR>and platform has atomic int but not atomic short.<BR></DIV></SPAN></BLOCKQUOTE>
<DIV><BR></DIV>We do have atomic WIDECHARl</DIV>
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<DIV style="FONT-FAMILY: Verdana; FONT-SIZE: 10pt" class=ecxhmmessage> <BR> <BR> - Jay<BR><BR></DIV></SPAN></BLOCKQUOTE></DIV><BR> </body>
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