destroy

If a function returns an UnsafeMutablePointer is it our responsibility to destroy and dealloc?

由 耗尽温柔 提交于 2019-12-03 15:41:27
问题 For example if I were to write this code: var t = time_t() time(&t) let x = localtime(&t) // returns UnsafeMutablePointer<tm> println("\(x.memory.tm_hour): \(x.memory.tm_min): \(x.memory.tm_sec)") ...would it also be necessary to also do the following? x.destroy() x.dealloc(1) Or did we not allocate the memory and so therefore don't need to dismiss it? Update #1: If we imagine a function that returns an UnsafeMutablePointer : func point() -> UnsafeMutablePointer<String> { let a =

Detecting global destruction in Perl

由 谁说我不能喝 提交于 2019-12-03 15:31:19
I'd like to detect if my object is being DESTROY 'd as part of global destruction, and print out a warning (as that'd clearly be an error and lead to data loss). The obvious way to do that would seem to be: sub DESTROY { my $self = shift; # ⋮ if (i_am_in_global_destruction()) { warn "I survived until global destruction"; } } but I have been unable to find a good way to detect global destruction (instead of normal refcount hit 0 destruction). By "good way", I mean not this, which though it works on 5.10.1 and 5.8.8, probably breaks the second someone gives it an odd glance: sub DESTROY { $in_gd

Re-initialize or destroy Bootstrap datepicker dynamically

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-03 12:08:38
问题 Is there a way to destroy the Bootstrap datepicker dynamically updating its options like format, beforeShowDay, etc.? I know that the jQuery UI datepicker has a destroy method but Bootstrap's has not. It only has the .('remove') method but its not working. My goal is to modify the options of the datepicker when changing an input, for example: $('#employee').change( function() { $('#date').datepicker('destroy'); //not working 'cause bootstrap hasnt a destroy method $('#date').hide(); }); Then

The right way to kill a process in Java

由 ε祈祈猫儿з 提交于 2019-12-03 10:34:12
What's the best way to kill a process in Java ? Get the PID and then killing it with Runtime.exec() ? Use destroyForcibly() ? What's the difference between these two methods, and is there any others solutions ? Derlin If the process you want to kill has been started by your application Then you probably have a reference to it ( ProcessBuilder.start() or Runtime.exec() both return a reference). In this case, you can simply call p.destroy() . I think this is the cleanest way (but be careful: sub-processes started by p may stay alive, check http://bugs.sun.com/bugdatabase/view_bug.do?bug_id

Thread-launched running processes won't destroy (Java)

由 ﹥＞﹥吖頭↗ 提交于 2019-12-03 06:53:24
问题 Starting multiple threads and having each exec() then destroy() a running java process result in some of the process not being destroyed and still running after program exit. Here is some code that reproduce the issue. I noticed the more threads you start, the more processes stay alive. And the more sleep before destroy(), the less processes stay alive. (I used InfiniteLoop as an example. Any running process will do the trick.) EDIT : Bug has been reported to Oracle, waiting for an answer.

Thread-launched running processes won't destroy (Java)

由 痞子三分冷 提交于 2019-12-02 20:41:55
Starting multiple threads and having each exec() then destroy() a running java process result in some of the process not being destroyed and still running after program exit. Here is some code that reproduce the issue. I noticed the more threads you start, the more processes stay alive. And the more sleep before destroy(), the less processes stay alive. (I used InfiniteLoop as an example. Any running process will do the trick.) EDIT : Bug has been reported to Oracle, waiting for an answer. Feel free to share any knowledge/experiments on the subject. for(int i = 0; i < 100; i++) { new Thread

How to destroy all Processes from a Runtime at once?

由 ↘锁芯ラ 提交于 2019-12-02 17:40:15
问题 So for example: Runtime rt = Runtime.getRuntime(); creates Runtime rt Process p1 = rt.exec("C:/Windows/System32/calc.exe"); creates Process p1 on Runtime rt . Then p1.destroy(); will destroy Process p1 . My question is: If I have more than one Process (e.g. p1 , p2 , and p3 ), how do I destroy them all at once, instead of having to destroy them one by one? 回答1: Keep a List<Process> of all your processes and destroy them in a loop. List<Process> processes = ... for(Process p : processes) { p

Destroying PHP Session

由 放肆的年华 提交于 2019-12-02 13:43:06
问题 There are lots of pages on stackoverflow about destorying session. Trust me, I have been reading them all and I came across this: Why does my session remain? My question is simple, is it really true that I need to do all of the below just to properly destroy a session? $tmp = session_id(); session_destroy(); session_id($tmp); unset($tmp); This is the only page that suggests such extreme measures. Most pages just suggest session_destroy(); . Just to clarify because there seems to be some

How to destroy/release resources used in 1 activity/layout?

由 杀马特。学长 韩版系。学妹 提交于 2019-12-02 08:37:41
How do I release resources used in 1 activity? So I got 3 layouts and activity for each layout, but the problem is when I switch between those activities my app crashes and I get this: I started getting this error ever since I added adds to my application. My whole logcat http://i.imgur.com/t5G94dC.png XML Layout: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads" android:id="@+id/RelativeLayout1" android:layout_width="match_parent" android:layout_height="match_parent"

Destroying PHP Session

由 ∥☆過路亽．° 提交于 2019-12-02 03:45:22
There are lots of pages on stackoverflow about destorying session. Trust me, I have been reading them all and I came across this: Why does my session remain? My question is simple, is it really true that I need to do all of the below just to properly destroy a session? $tmp = session_id(); session_destroy(); session_id($tmp); unset($tmp); This is the only page that suggests such extreme measures. Most pages just suggest session_destroy(); . Just to clarify because there seems to be some confusion I am looking for the most efficent method that is effective. Thanks in advance. New answers have
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