<div><div dir="auto">I just realised I sent this to PostGIS-devel not Postgres-hackers - I’ll move it across!</div></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 22 Jun 2020 at 8:52 pm, Greg Troxel <<a href="mailto:gdt@lexort.com">gdt@lexort.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">James Sewell <<a href="mailto:james.sewell@jirotech.com" target="_blank">james.sewell@jirotech.com</a>> writes:<br>
<br>
> 3. it's safe for postgres to call any system library function, even<br>
> ones explicitly marked as not thread safe<br>
<br>
> 3. needs to be converted to a list of possible calls - which can be done<br>
> and checked.<br>
<br>
"checked" how? Presumably the issue is that posix doesn't say they are<br>
ok, but somehow they are. Do you mean<br>
<br>
checked by reading the operating system sources ont he particular<br>
system you happen to be using<br>
<br>
and for this to be a local decision to exceed the normal safety<br>
guidelines? Or do you mean something larger scale?<br>
</blockquote></div></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:small"><span style="color:rgb(50,59,98);font-family:Arial,Helvetica,sans-serif;font-size:14px;font-weight:bold">James Sewell,</span><br></div><div style="font-size:14px;color:rgb(184,39,106);font-stretch:normal;font-family:Arial,Helvetica,sans-serif"><span style="color:rgb(169,169,169)"><span style="font-stretch:normal;font-size:12px"><b>Chief Architect, Jirotech</b></span></span></div><div style="font-stretch:normal;font-family:Arial,Helvetica,sans-serif"><span style="color:rgb(153,153,153);font-size:12px">Suite 46, Jones Bay Wharf, 26-32 Pirrama Road, Pyrmont NSW 2009</span><br></div><div style="font-size:small;font-stretch:normal;margin:0px"><font color="#999999"><strong style="font-family:Arial,Helvetica,sans-serif;font-size:12px;line-height:20px">P </strong><font face="Arial, Verdana, sans-serif"><span style="font-size:12px;line-height:20px"><a href="tel:(+61)%202%208099%209000" value="+61280999000" style="color:rgb(17,85,204)" target="_blank">(+61) 2 8099 9000</a></span></font><span style="font-family:Arial,Helvetica,sans-serif;font-size:12px;line-height:20px"> </span><strong style="font-family:Arial,Helvetica,sans-serif;font-size:12px;line-height:20px"> </strong><span style="font-family:Arial,Helvetica,sans-serif;font-size:12px;line-height:20px"><span style="width:15px;display:inline-block"><strong>W</strong></span></span><font face="Arial, Helvetica, sans-serif"><span style="font-size:12px;line-height:20px"> </span></font><a href="http://www.jirotech.com/" style="color:rgb(17,85,204);font-family:Arial,Helvetica,sans-serif;font-size:12px;line-height:20px;margin:2px 0px" target="_blank">www.jirotech.com</a><font face="Arial, Helvetica, sans-serif"><span style="font-size:12px;line-height:20px"> </span></font><span style="font-family:Arial,Helvetica,sans-serif;font-size:12px;line-height:20px"><span style="width:15px;display:inline-block"><strong>F </strong></span></span><a href="tel:(+61)%202%208099%209000" style="color:rgb(17,85,204)" target="_blank"><span style="font-family:Arial,Helvetica,sans-serif;font-size:12px;line-height:20px"><span style="font-family:Arial,Verdana,sans-serif">(+61) </span></span><font face="Arial, Verdana, sans-serif"><span style="font-size:12px;line-height:20px">2 8099 9099</span></font></a></font></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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