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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Hi Daniel,
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<div>if i understand it correctly, it is safe to call pv_value_destroy after assigning the $var(..) in module code.</div>
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<div>i still have doubt on when and how to free the result of a transform returned value.</div>
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<div><span style="font-size: 10pt;">in script</span></div>
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<div>if( $(myPvar{my.mytransform,transformParameter}) =="test value") {</div>
<div> $var(x) = $(myPvar{my.mytransform,transformParameter});</div>
<div>}</div>
<div><br>
</div>
<div>in module i assign the returned value of transform with <span style="font-size: 10pt;">dst_val->flags = PV_VAL_STR | PV_VAL_PKG;</span></div>
<div><span style="font-size: 10pt;">since this line "</span><span style="font-size: 10pt;">if( $(myPvar{my.mytransform,transformParameter}) =="test value") {" is allocating memory, will it be freed by script with </span><span style="font-size: 10pt;">pv_value_destroy</span><span style="font-size: 10pt;">
?</span></div>
<div><span style="font-size: 10pt;">this line "</span><span style="font-size: 10pt;">$var(x) = $(myPvar{my.mytransform,transformParameter});" assigns the returned value to a variable, will the script free the right side of the expression ? will it use </span><span style="font-size: 10pt;">pv_value_destroy</span><span style="font-size: 10pt;">
?</span></div>
<div><span style="font-size: 10pt;"><br>
</span></div>
<div><span style="font-size: 10pt;"><br>
</span></div>
<div><span style="font-size: 10pt;">Thanks</span></div>
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<div id="divRpF132983" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> sr-dev [sr-dev-bounces@lists.sip-router.org] on behalf of Daniel-Constantin Mierla [miconda@gmail.com]<br>
<b>Sent:</b> Monday, January 05, 2015 3:59 AM<br>
<b>To:</b> Kamailio (SER) - Development Mailing List<br>
<b>Subject:</b> Re: [sr-dev] need help understanding pv_value_destroy<br>
</font><br>
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<div></div>
<div>Hello,<br>
<br>
if you assign to a $var(...), it makes a deep copy in pkg memory. It is up to you to handle further the content of dst_val and free it properly.<br>
<br>
If you set the PV_VAL_PKG (value must be in a pkg_malloc() pointer) or PV_VAL_SHM (value must be in a shm_malloc() pointer) for dst_val, then you can call pv_value_destroy() to get it freed. But it is not necessary, if you free it in the code yourself.<br>
<br>
Cheers,<br>
Daniel<br>
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<div class="moz-cite-prefix">On 04/01/15 12:36, Luis Azedo wrote:<br>
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<div style="direction:ltr; font-family:Tahoma; color:#000000; font-size:10pt">Hi Daniel,
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</div>
<div>can you help on this ?</div>
<div><br>
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<div id="divRpF641763" style="direction:ltr"><font color="#000000" face="Tahoma" size="2"><b>From:</b> sr-dev [<a class="moz-txt-link-abbreviated" href="mailto:sr-dev-bounces@lists.sip-router.org" target="_blank">sr-dev-bounces@lists.sip-router.org</a>] on
behalf of Luis Azedo [<a class="moz-txt-link-abbreviated" href="mailto:luis@2600hz.com" target="_blank">luis@2600hz.com</a>]<br>
<b>Sent:</b> Wednesday, December 31, 2014 4:19 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:sr-dev@lists.sip-router.org" target="_blank">
sr-dev@lists.sip-router.org</a><br>
<b>Subject:</b> [sr-dev] need help understanding pv_value_destroy<br>
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<div style="direction:ltr; font-family:Tahoma; color:#000000; font-size:10pt">
<div>Hi,</div>
<div><br>
</div>
in some function that return a value with PV_VAL_PKG or PV_VAL_SHM, the allocated memory is supposed to be freed by core ?
<div><br>
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<div>script example</div>
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<div>my_function("some param","$var(result)");</div>
<div><span style="font-size:10pt"><br>
</span></div>
<div><span style="font-size:10pt">in code => </span></div>
<div>dst_val->flags = PV_VAL_STR | PV_VAL_PKG;</div>
<div><span style="font-size:10pt">dst_pv->setf(msg, &dst_pv->pvp, (int)EQ_T, &dst_val);</span></div>
<div><br>
</div>
<div>when $var(result) is freed, will it free the allocated string ?</div>
<div><br>
</div>
<div><br>
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<div>if( $(myPvar{my.mytransform,transformParameter}) == $null) {</div>
<div> $var(x) = <span style="font-size:10pt">$(myPvar{my.mytransform,transformParameter});</span></div>
<div>}</div>
<div>
<div><span style="font-size:10pt"><br>
</span></div>
<div><span style="font-size:10pt">in code => </span></div>
<div>dst_val->flags = PV_VAL_STR | PV_VAL_PKG;</div>
<div><br>
</div>
</div>
<div>will the memory allocated <span style="font-size:10pt">be freed</span><span style="font-size:10pt"> in the comparison line ?</span></div>
<div><span style="font-size:10pt">will</span><span style="font-size:10pt"> </span><span style="font-size:10pt">the memory allocated </span><span style="font-size:10pt">be freed</span><span style="font-size:10pt"> when $var(x) is freed ?</span></div>
<div><span style="font-size:10pt"><br>
</span></div>
<div><span style="font-size:10pt">thank you</span></div>
<div><span style="font-size:10pt"><br>
</span></div>
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<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda" target="_blank">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda" target="_blank">http://www.linkedin.com/in/miconda</a></pre>
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