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< li > watch< / li >
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< span id = "watch" > < / span > < h1 > watch< a class = "headerlink" href = "#watch" title = "Permalink to this headline" > ¶< / a > < / h1 >
< p > Monitor methods in data aspect including < code class = "docutils literal notranslate" > < span class = "pre" > return< / span > < span class = "pre" > values< / span > < / code > , < code class = "docutils literal notranslate" > < span class = "pre" > exceptions< / span > < / code > and < code class = "docutils literal notranslate" > < span class = "pre" > parameters< / span > < / code > .< / p >
< p > With the help of < a class = "reference external" href = "https://commons.apache.org/proper/commons-ognl/index.html" > OGNL< / a > , you can easily check the details of variables when methods being invoked.< / p >
< div class = "section" id = "parameters-options" >
< span id = "parameters-options" > < / span > < h2 > Parameters & Options< a class = "headerlink" href = "#parameters-options" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > There are four different scenarios for < code class = "docutils literal notranslate" > < span class = "pre" > watch< / span > < / code > command, which makes it rather complicated.< / p >
< table border = "1" class = "docutils" >
< thead >
< tr >
< th align = "right" > Name< / th >
< th align = "left" > Specification< / th >
< / tr >
< / thead >
< tbody >
< tr >
< td align = "right" > < em > class-pattern< / em > < / td >
< td align = "left" > pattern for the class name< / td >
< / tr >
< tr >
< td align = "right" > < em > method-pattern< / em > < / td >
< td align = "left" > pattern for the method name< / td >
< / tr >
< tr >
< td align = "right" > < em > expression< / em > < / td >
< td align = "left" > expression to monitor< / td >
< / tr >
< tr >
< td align = "right" > < em > condition-expression< / em > < / td >
< td align = "left" > condition expression to filter< / td >
< / tr >
< tr >
< td align = "right" > [b]< / td >
< td align = "left" > before method being invoked< / td >
< / tr >
< tr >
< td align = "right" > [e]< / td >
< td align = "left" > when method encountering exceptions< / td >
< / tr >
< tr >
< td align = "right" > [s]< / td >
< td align = "left" > when method exits normally< / td >
< / tr >
< tr >
< td align = "right" > [f]< / td >
< td align = "left" > when method exits (either succeed or fail with exceptions)< / td >
< / tr >
< tr >
< td align = "right" > [E]< / td >
< td align = "left" > turn on regex matching while the default is wildcard matching< / td >
< / tr >
< tr >
< td align = "right" > [x:]< / td >
< td align = "left" > the depth to print the specified property with default value: 1< / td >
< / tr >
< / tbody >
< / table > < p > F.Y.I< / p >
< ol class = "simple" >
< li > any valid OGNL expression as < code class = "docutils literal notranslate" > < span class = "pre" > " {params,returnObj}" < / span > < / code > supported< / li >
< li > there are four < em > watching< / em > points: < code class = "docutils literal notranslate" > < span class = "pre" > -b< / span > < / code > , < code class = "docutils literal notranslate" > < span class = "pre" > -e< / span > < / code > , < code class = "docutils literal notranslate" > < span class = "pre" > -s< / span > < / code > and < code class = "docutils literal notranslate" > < span class = "pre" > -f< / span > < / code > (the first three are off in default while < code class = "docutils literal notranslate" > < span class = "pre" > -f< / span > < / code > on);< / li >
< li > at the < em > watching< / em > point, Arthas will use the < em > expression< / em > to evaluate the variables and print them out;< / li >
< li > < code class = "docutils literal notranslate" > < span class = "pre" > in< / span > < span class = "pre" > parameters< / span > < / code > and < code class = "docutils literal notranslate" > < span class = "pre" > out< / span > < span class = "pre" > parameters< / span > < / code > are different since they can be modified within the invoked methods; < code class = "docutils literal notranslate" > < span class = "pre" > params< / span > < / code > stands for < code class = "docutils literal notranslate" > < span class = "pre" > in< / span > < span class = "pre" > parameters< / span > < / code > in < code class = "docutils literal notranslate" > < span class = "pre" > -b< / span > < / code > while < code class = "docutils literal notranslate" > < span class = "pre" > out< / span > < span class = "pre" > parameters< / span > < / code > in other < em > watching< / em > points;< / li >
< li > there are no < code class = "docutils literal notranslate" > < span class = "pre" > return< / span > < span class = "pre" > values< / span > < / code > and < code class = "docutils literal notranslate" > < span class = "pre" > exceptions< / span > < / code > when using < code class = "docutils literal notranslate" > < span class = "pre" > -b< / span > < / code > .< / li >
< / ol >
< p > Advanced:< / p >
< div class = "toctree-wrapper compound" >
< ul >
< li class = "toctree-l1" > < a class = "reference internal" href = "advice-class.html" > Critical fields in< / a > < / li >
< li class = "toctree-l1" > < a class = "reference external" href = "https://github.com/alibaba/arthas/issues/71" > Special usages< / a > < / li >
< li class = "toctree-l1" > < a class = "reference external" href = "https://commons.apache.org/proper/commons-ognl/language-guide.html" > OGNL official guide< / a > < / li >
< / ul >
< / div >
< / div >
< div class = "section" id = "usage" >
< span id = "usage" > < / span > < h2 > Usage< a class = "headerlink" href = "#usage" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > Start < code class = "docutils literal notranslate" > < span class = "pre" > arthas-demo< / span > < / code > in < a class = "reference internal" href = "quick-start.html" > < span class = "doc" > Quick Start< / span > < / a > .< / p >
< div class = "section" id = "check-the-out-parameters-and-return-value" >
< span id = "check-the-out-parameters-and-return-value" > < / span > < h3 > Check the < code class = "docutils literal notranslate" > < span class = "pre" > out< / span > < span class = "pre" > parameters< / span > < / code > and < code class = "docutils literal notranslate" > < span class = "pre" > return< / span > < span class = "pre" > value< / span > < / code > < a class = "headerlink" href = "#check-the-out-parameters-and-return-value" title = "Permalink to this headline" > ¶< / a > < / h3 >
< div class = "highlight-bash notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch demo.MathGame primeFactors < span class = "s2" > " {params,returnObj}" < / span > -x < span class = "m" > 2< / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 44< / span > ms.
< span class = "nv" > ts< / span > < span class = "o" > =< / span > < span class = "m" > 2018< / span > -12-03 < span class = "m" > 19< / span > :16:51< span class = "p" > ;< / span > < span class = "o" > [< / span > < span class = "nv" > cost< / span > < span class = "o" > =< / span > < span class = "m" > 1< / span > .280502ms< span class = "o" > ]< / span > < span class = "nv" > result< / span > < span class = "o" > =< / span > @ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@Integer< span class = "o" > [< / span > < span class = "m" > 535629513< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@ArrayList< span class = "o" > [< / span >
@Integer< span class = "o" > [< / span > < span class = "m" > 3< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 19< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 191< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 49199< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "check-in-parameters" >
< span id = "check-in-parameters" > < / span > < h3 > Check < code class = "docutils literal notranslate" > < span class = "pre" > in< / span > < span class = "pre" > parameters< / span > < / code > < a class = "headerlink" href = "#check-in-parameters" title = "Permalink to this headline" > ¶< / a > < / h3 >
< div class = "highlight-bash notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch demo.MathGame primeFactors < span class = "s2" > " {params,returnObj}" < / span > -x < span class = "m" > 2< / span > -b
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 50< / span > ms.
< span class = "nv" > ts< / span > < span class = "o" > =< / span > < span class = "m" > 2018< / span > -12-03 < span class = "m" > 19< / span > :23:23< span class = "p" > ;< / span > < span class = "o" > [< / span > < span class = "nv" > cost< / span > < span class = "o" > =< / span > < span class = "m" > 0< / span > .0353ms< span class = "o" > ]< / span > < span class = "nv" > result< / span > < span class = "o" > =< / span > @ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@Integer< span class = "o" > [< / span > -1077465243< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
null,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< p > Compared to the previous < em > check< / em > :< / p >
< ul class = "simple" >
< li > < code class = "docutils literal notranslate" > < span class = "pre" > return< / span > < span class = "pre" > value< / span > < / code > is < code class = "docutils literal notranslate" > < span class = "pre" > null< / span > < / code > since it’ < code class = "docutils literal notranslate" > < span class = "pre" > -b< / span > < / code > .< / li >
< / ul >
< / div >
< div class = "section" id = "check-before-and-after-at-the-same-time" >
< span id = "check-before-and-after-at-the-same-time" > < / span > < h3 > Check < em > before< / em > and < em > after< / em > at the same time< a class = "headerlink" href = "#check-before-and-after-at-the-same-time" title = "Permalink to this headline" > ¶< / a > < / h3 >
< div class = "highlight-bash notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch demo.MathGame primeFactors < span class = "s2" > " {params,target,returnObj}" < / span > -x < span class = "m" > 2< / span > -b -s -n < span class = "m" > 2< / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 46< / span > ms.
< span class = "nv" > ts< / span > < span class = "o" > =< / span > < span class = "m" > 2018< / span > -12-03 < span class = "m" > 19< / span > :29:54< span class = "p" > ;< / span > < span class = "o" > [< / span > < span class = "nv" > cost< / span > < span class = "o" > =< / span > < span class = "m" > 0< / span > .01696ms< span class = "o" > ]< / span > < span class = "nv" > result< / span > < span class = "o" > =< / span > @ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@Integer< span class = "o" > [< / span > < span class = "m" > 1544665400< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@MathGame< span class = "o" > [< / span >
< span class = "nv" > random< / span > < span class = "o" > =< / span > @Random< span class = "o" > [< / span > java.util.Random@522b408a< span class = "o" > ]< / span > ,
< span class = "nv" > illegalArgumentCount< / span > < span class = "o" > =< / span > @Integer< span class = "o" > [< / span > < span class = "m" > 13038< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
null,
< span class = "o" > ]< / span >
< span class = "nv" > ts< / span > < span class = "o" > =< / span > < span class = "m" > 2018< / span > -12-03 < span class = "m" > 19< / span > :29:54< span class = "p" > ;< / span > < span class = "o" > [< / span > < span class = "nv" > cost< / span > < span class = "o" > =< / span > < span class = "m" > 4< / span > .277392ms< span class = "o" > ]< / span > < span class = "nv" > result< / span > < span class = "o" > =< / span > @ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@Integer< span class = "o" > [< / span > < span class = "m" > 1544665400< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@MathGame< span class = "o" > [< / span >
< span class = "nv" > random< / span > < span class = "o" > =< / span > @Random< span class = "o" > [< / span > java.util.Random@522b408a< span class = "o" > ]< / span > ,
< span class = "nv" > illegalArgumentCount< / span > < span class = "o" > =< / span > @Integer< span class = "o" > [< / span > < span class = "m" > 13038< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@ArrayList< span class = "o" > [< / span >
@Integer< span class = "o" > [< / span > < span class = "m" > 2< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 2< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 2< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 5< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 5< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 73< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 241< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 439< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< p > F.Y.I< / p >
< ul class = "simple" >
< li > < code class = "docutils literal notranslate" > < span class = "pre" > -n< / span > < span class = "pre" > 2< / span > < / code > : threshold of execution times is 2.< / li >
< li > the first block of output is the < em > before watching< / em > point;< / li >
< li > *the order of the output determined by the < em > watching< / em > order itself (nothing to do with the order of the options < code class = "docutils literal notranslate" > < span class = "pre" > -b< / span > < span class = "pre" > -s< / span > < / code > ).< / li >
< / ul >
< / div >
< div class = "section" id = "use-x-to-check-more-details" >
< span id = "use-x-to-check-more-details" > < / span > < h3 > Use < code class = "docutils literal notranslate" > < span class = "pre" > -x< / span > < / code > to check more details< a class = "headerlink" href = "#use-x-to-check-more-details" title = "Permalink to this headline" > ¶< / a > < / h3 >
< div class = "highlight-bash notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch demo.MathGame primeFactors < span class = "s2" > " {params,target}" < / span > -x < span class = "m" > 3< / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 58< / span > ms.
< span class = "nv" > ts< / span > < span class = "o" > =< / span > < span class = "m" > 2018< / span > -12-03 < span class = "m" > 19< / span > :34:19< span class = "p" > ;< / span > < span class = "o" > [< / span > < span class = "nv" > cost< / span > < span class = "o" > =< / span > < span class = "m" > 0< / span > .587833ms< span class = "o" > ]< / span > < span class = "nv" > result< / span > < span class = "o" > =< / span > @ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@Integer< span class = "o" > [< / span > < span class = "m" > 47816758< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@MathGame< span class = "o" > [< / span >
< span class = "nv" > random< / span > < span class = "o" > =< / span > @Random< span class = "o" > [< / span >
< span class = "nv" > serialVersionUID< / span > < span class = "o" > =< / span > @Long< span class = "o" > [< / span > < span class = "m" > 3905348978240129619< / span > < span class = "o" > ]< / span > ,
< span class = "nv" > seed< / span > < span class = "o" > =< / span > @AtomicLong< span class = "o" > [< / span > < span class = "m" > 3133719055989< / span > < span class = "o" > ]< / span > ,
< span class = "nv" > multiplier< / span > < span class = "o" > =< / span > @Long< span class = "o" > [< / span > < span class = "m" > 25214903917< / span > < span class = "o" > ]< / span > ,
< span class = "nv" > addend< / span > < span class = "o" > =< / span > @Long< span class = "o" > [< / span > < span class = "m" > 11< / span > < span class = "o" > ]< / span > ,
< span class = "nv" > mask< / span > < span class = "o" > =< / span > @Long< span class = "o" > [< / span > < span class = "m" > 281474976710655< / span > < span class = "o" > ]< / span > ,
< span class = "nv" > DOUBLE_UNIT< / span > < span class = "o" > =< / span > @Double< span class = "o" > [< / span > < span class = "m" > 1< / span > .1102230246251565E-16< span class = "o" > ]< / span > ,
< span class = "nv" > BadBound< / span > < span class = "o" > =< / span > @String< span class = "o" > [< / span > bound must be positive< span class = "o" > ]< / span > ,
< span class = "nv" > BadRange< / span > < span class = "o" > =< / span > @String< span class = "o" > [< / span > bound must be greater than origin< span class = "o" > ]< / span > ,
< span class = "nv" > BadSize< / span > < span class = "o" > =< / span > @String< span class = "o" > [< / span > size must be non-negative< span class = "o" > ]< / span > ,
< span class = "nv" > seedUniquifier< / span > < span class = "o" > =< / span > @AtomicLong< span class = "o" > [< / span > -3282039941672302964< span class = "o" > ]< / span > ,
< span class = "nv" > nextNextGaussian< / span > < span class = "o" > =< / span > @Double< span class = "o" > [< / span > < span class = "m" > 0< / span > .0< span class = "o" > ]< / span > ,
< span class = "nv" > haveNextNextGaussian< / span > < span class = "o" > =< / span > @Boolean< span class = "o" > [< / span > false< span class = "o" > ]< / span > ,
< span class = "nv" > serialPersistentFields< / span > < span class = "o" > =< / span > @ObjectStreamField< span class = "o" > [][< / span > < span class = "nv" > isEmpty< / span > < span class = "o" > =< / span > false< span class = "p" > ;< / span > < span class = "nv" > size< / span > < span class = "o" > =< / span > < span class = "m" > 3< / span > < span class = "o" > ]< / span > ,
< span class = "nv" > unsafe< / span > < span class = "o" > =< / span > @Unsafe< span class = "o" > [< / span > sun.misc.Unsafe@2eaa1027< span class = "o" > ]< / span > ,
< span class = "nv" > seedOffset< / span > < span class = "o" > =< / span > @Long< span class = "o" > [< / span > < span class = "m" > 24< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
< span class = "nv" > illegalArgumentCount< / span > < span class = "o" > =< / span > @Integer< span class = "o" > [< / span > < span class = "m" > 13159< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< ul class = "simple" >
< li > < code class = "docutils literal notranslate" > < span class = "pre" > -x< / span > < / code > : Expand level of object (1 by default)< / li >
< / ul >
< / div >
< div class = "section" id = "use-condition-expressions-to-locate-specific-call" >
< span id = "use-condition-expressions-to-locate-specific-call" > < / span > < h3 > Use condition expressions to locate specific call< a class = "headerlink" href = "#use-condition-expressions-to-locate-specific-call" title = "Permalink to this headline" > ¶< / a > < / h3 >
< div class = "highlight-bash notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch demo.MathGame primeFactors < span class = "s2" > " {params[0],target}" < / span > < span class = "s2" > " params[0]< 0" < / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 68< / span > ms.
< span class = "nv" > ts< / span > < span class = "o" > =< / span > < span class = "m" > 2018< / span > -12-03 < span class = "m" > 19< / span > :36:04< span class = "p" > ;< / span > < span class = "o" > [< / span > < span class = "nv" > cost< / span > < span class = "o" > =< / span > < span class = "m" > 0< / span > .530255ms< span class = "o" > ]< / span > < span class = "nv" > result< / span > < span class = "o" > =< / span > @ArrayList< span class = "o" > [< / span >
@Integer< span class = "o" > [< / span > -18178089< span class = "o" > ]< / span > ,
@MathGame< span class = "o" > [< / span > demo.MathGame@41cf53f9< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "check-exceptions" >
< span id = "check-exceptions" > < / span > < h3 > Check < code class = "docutils literal notranslate" > < span class = "pre" > exceptions< / span > < / code > < a class = "headerlink" href = "#check-exceptions" title = "Permalink to this headline" > ¶< / a > < / h3 >
< div class = "highlight-bash notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch demo.MathGame primeFactors < span class = "s2" > " {params[0],throwExp}" < / span > -e -x < span class = "m" > 2< / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 62< / span > ms.
< span class = "nv" > ts< / span > < span class = "o" > =< / span > < span class = "m" > 2018< / span > -12-03 < span class = "m" > 19< / span > :38:00< span class = "p" > ;< / span > < span class = "o" > [< / span > < span class = "nv" > cost< / span > < span class = "o" > =< / span > < span class = "m" > 1< / span > .414993ms< span class = "o" > ]< / span > < span class = "nv" > result< / span > < span class = "o" > =< / span > @ArrayList< span class = "o" > [< / span >
@Integer< span class = "o" > [< / span > -1120397038< span class = "o" > ]< / span > ,
java.lang.IllegalArgumentException: number is: -1120397038, need > < span class = "o" > =< / span > < span class = "m" > 2< / span >
at demo.MathGame.primeFactors< span class = "o" > (< / span > MathGame.java:46< span class = "o" > )< / span >
at demo.MathGame.run< span class = "o" > (< / span > MathGame.java:24< span class = "o" > )< / span >
at demo.MathGame.main< span class = "o" > (< / span > MathGame.java:16< span class = "o" > )< / span >
,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< ul class = "simple" >
< li > < code class = "docutils literal notranslate" > < span class = "pre" > -e< / span > < / code > < / li >
< li > < code class = "docutils literal notranslate" > < span class = "pre" > throwExp< / span > < / code > : the exception object< / li >
< / ul >
< / div >
< div class = "section" id = "filter-by-time-cost" >
< span id = "filter-by-time-cost" > < / span > < h3 > Filter by time cost< a class = "headerlink" href = "#filter-by-time-cost" title = "Permalink to this headline" > ¶< / a > < / h3 >
< div class = "highlight-bash notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch demo.MathGame primeFactors < span class = "s1" > ' {params, returnObj}' < / span > < span class = "s1" > ' #cost> 200' < / span > -x < span class = "m" > 2< / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 66< / span > ms.
< span class = "nv" > ts< / span > < span class = "o" > =< / span > < span class = "m" > 2018< / span > -12-03 < span class = "m" > 19< / span > :40:28< span class = "p" > ;< / span > < span class = "o" > [< / span > < span class = "nv" > cost< / span > < span class = "o" > =< / span > < span class = "m" > 2112< / span > .168897ms< span class = "o" > ]< / span > < span class = "nv" > result< / span > < span class = "o" > =< / span > @ArrayList< span class = "o" > [< / span >
@Object< span class = "o" > [][< / span >
@Integer< span class = "o" > [< / span > < span class = "m" > 2141897465< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
@ArrayList< span class = "o" > [< / span >
@Integer< span class = "o" > [< / span > < span class = "m" > 5< / span > < span class = "o" > ]< / span > ,
@Integer< span class = "o" > [< / span > < span class = "m" > 428379493< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< ul class = "simple" >
< li > < code class = "docutils literal notranslate" > < span class = "pre" > #cost> 200< / span > < / code > (< code class = "docutils literal notranslate" > < span class = "pre" > ms< / span > < / code > ) filter out all invokings that take less than < code class = "docutils literal notranslate" > < span class = "pre" > 200ms< / span > < / code > .< / li >
< / ul >
< / div >
< div class = "section" id = "check-the-field-of-the-target-object" >
< span id = "check-the-field-of-the-target-object" > < / span > < h3 > Check the field of the target object< a class = "headerlink" href = "#check-the-field-of-the-target-object" title = "Permalink to this headline" > ¶< / a > < / h3 >
< ul class = "simple" >
< li > < code class = "docutils literal notranslate" > < span class = "pre" > target< / span > < / code > is the < code class = "docutils literal notranslate" > < span class = "pre" > this< / span > < / code > object in java.< / li >
< / ul >
< div class = "highlight-bash notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch demo.MathGame primeFactors < span class = "s1" > ' target' < / span >
Press Ctrl+C to abort.
Affect< span class = "o" > (< / span > class-cnt:1 , method-cnt:1< span class = "o" > )< / span > cost in < span class = "m" > 52< / span > ms.
< span class = "nv" > ts< / span > < span class = "o" > =< / span > < span class = "m" > 2018< / span > -12-03 < span class = "m" > 19< / span > :41:52< span class = "p" > ;< / span > < span class = "o" > [< / span > < span class = "nv" > cost< / span > < span class = "o" > =< / span > < span class = "m" > 0< / span > .477882ms< span class = "o" > ]< / span > < span class = "nv" > result< / span > < span class = "o" > =< / span > @MathGame< span class = "o" > [< / span >
< span class = "nv" > random< / span > < span class = "o" > =< / span > @Random< span class = "o" > [< / span > java.util.Random@522b408a< span class = "o" > ]< / span > ,
< span class = "nv" > illegalArgumentCount< / span > < span class = "o" > =< / span > @Integer< span class = "o" > [< / span > < span class = "m" > 13355< / span > < span class = "o" > ]< / span > ,
< span class = "o" > ]< / span >
< / pre > < / div >
< / div >
< ul class = "simple" >
< li > < code class = "docutils literal notranslate" > < span class = "pre" > target.field_name< / span > < / code > : the field of the current object.< / li >
< / ul >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch demo.MathGame primeFactors ' target.illegalArgumentCount'
Press Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 67 ms.
ts=2018-12-03 20:04:34; [cost=131.303498ms] result=@Integer[8]
ts=2018-12-03 20:04:35; [cost=0.961441ms] result=@Integer[8]
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