( ! ) Deprecated: Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /var/www/html/wp-includes/functions.php on line 6131
Call Stack
#TimeMemoryFunctionLocation
10.0000484048{main}( ).../index.php:0
20.0006484400require( '/var/www/html/wp-blog-header.php ).../index.php:17
30.33764095344require_once( '/var/www/html/wp-includes/template-loader.php ).../wp-blog-header.php:19
40.34414124336include( '/var/www/html/wp-content/themes/twentyfifteen/single.php ).../template-loader.php:125
50.34414124336get_header( $name = ???, $args = ??? ).../single.php:10
60.34414124552locate_template( $template_names = [0 => 'header.php'], $load = TRUE, $load_once = TRUE, $args = [] ).../general-template.php:48
70.34424124648load_template( $_template_file = '/var/www/html/wp-content/themes/twentyfifteen/header.php', $load_once = TRUE, $args = [] ).../template.php:749
80.34474125192require_once( '/var/www/html/wp-content/themes/twentyfifteen/header.php ).../template.php:814
90.34484132600wp_head( ).../header.php:18
100.34484132600do_action( $hook_name = 'wp_head' ).../general-template.php:3197
110.34484132816WP_Hook->do_action( $args = [0 => ''] ).../plugin.php:522
120.34484132816WP_Hook->apply_filters( $value = '', $args = [0 => ''] ).../class-wp-hook.php:365
130.34504136232wp_enqueue_scripts( '' ).../class-wp-hook.php:341
140.34504136232do_action( $hook_name = 'wp_enqueue_scripts' ).../script-loader.php:2311
150.34504136448WP_Hook->do_action( $args = [0 => ''] ).../plugin.php:522
160.34504136448WP_Hook->apply_filters( $value = '', $args = [0 => ''] ).../class-wp-hook.php:365
170.34514138336twentyfifteen_scripts( '' ).../class-wp-hook.php:341
180.34534139856wp_style_add_data( $handle = 'twentyfifteen-ie', $key = 'conditional', $value = 'lt IE 9' ).../functions.php:440
190.34534139856WP_Styles->add_data( $handle = 'twentyfifteen-ie', $key = 'conditional', $value = 'lt IE 9' ).../functions.wp-styles.php:245
200.34534139856WP_Dependencies->add_data( $handle = 'twentyfifteen-ie', $key = 'conditional', $value = 'lt IE 9' ).../class-wp-styles.php:385
210.34534139856_deprecated_argument( $function_name = 'WP_Dependencies->add_data()', $version = '6.9.0', $message = 'IE conditional comments are ignored by all supported browsers.' ).../class-wp-dependencies.php:317
220.34534145808wp_trigger_error( $function_name = '', $message = 'Function WP_Dependencies->add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers.', $error_level = 16384 ).../functions.php:5925
230.34534265344trigger_error( $message = 'Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers.', $error_level = 16384 ).../functions.php:6131
( ! ) Deprecated: Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers. in /var/www/html/wp-includes/functions.php on line 6131
Call Stack
#TimeMemoryFunctionLocation
10.0000484048{main}( ).../index.php:0
20.0006484400require( '/var/www/html/wp-blog-header.php ).../index.php:17
30.33764095344require_once( '/var/www/html/wp-includes/template-loader.php ).../wp-blog-header.php:19
40.34414124336include( '/var/www/html/wp-content/themes/twentyfifteen/single.php ).../template-loader.php:125
50.34414124336get_header( $name = ???, $args = ??? ).../single.php:10
60.34414124552locate_template( $template_names = [0 => 'header.php'], $load = TRUE, $load_once = TRUE, $args = [] ).../general-template.php:48
70.34424124648load_template( $_template_file = '/var/www/html/wp-content/themes/twentyfifteen/header.php', $load_once = TRUE, $args = [] ).../template.php:749
80.34474125192require_once( '/var/www/html/wp-content/themes/twentyfifteen/header.php ).../template.php:814
90.34484132600wp_head( ).../header.php:18
100.34484132600do_action( $hook_name = 'wp_head' ).../general-template.php:3197
110.34484132816WP_Hook->do_action( $args = [0 => ''] ).../plugin.php:522
120.34484132816WP_Hook->apply_filters( $value = '', $args = [0 => ''] ).../class-wp-hook.php:365
130.34504136232wp_enqueue_scripts( '' ).../class-wp-hook.php:341
140.34504136232do_action( $hook_name = 'wp_enqueue_scripts' ).../script-loader.php:2311
150.34504136448WP_Hook->do_action( $args = [0 => ''] ).../plugin.php:522
160.34504136448WP_Hook->apply_filters( $value = '', $args = [0 => ''] ).../class-wp-hook.php:365
170.34514138336twentyfifteen_scripts( '' ).../class-wp-hook.php:341
180.37244266448wp_style_add_data( $handle = 'twentyfifteen-ie7', $key = 'conditional', $value = 'lt IE 8' ).../functions.php:444
190.37244266448WP_Styles->add_data( $handle = 'twentyfifteen-ie7', $key = 'conditional', $value = 'lt IE 8' ).../functions.wp-styles.php:245
200.37244266448WP_Dependencies->add_data( $handle = 'twentyfifteen-ie7', $key = 'conditional', $value = 'lt IE 8' ).../class-wp-styles.php:385
210.37244266448_deprecated_argument( $function_name = 'WP_Dependencies->add_data()', $version = '6.9.0', $message = 'IE conditional comments are ignored by all supported browsers.' ).../class-wp-dependencies.php:317
220.37244266768wp_trigger_error( $function_name = '', $message = 'Function WP_Dependencies->add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers.', $error_level = 16384 ).../functions.php:5925
230.37254266992trigger_error( $message = 'Function WP_Dependencies-&gt;add_data() was called with an argument that is <strong>deprecated</strong> since version 6.9.0! IE conditional comments are ignored by all supported browsers.', $error_level = 16384 ).../functions.php:6131

支持配额的共享线程池

用了几个小时动手实现了一个简陋支持配额的共享线程池. 基本思路与放翁相同, 区别在于引入了两种线程分配策略:

悲观策略

简单的共享一个线程池, 最容易出现的问题就是不同类型任务(或事件)在随机争抢线程资源时, 可能出现”饿死”现象(即抢不到线程).

因此, 悲观策略的宗旨是绝对的保证每种任务都会被分配到预留的(reserve)配额, 这种做法本质上和多个线程池的做法一样. 如总共100个线程, A任务可用50个线程, B任务可用30个线程, C任务可用20个, 三者互不占用, 一旦任意谁的任务实例超过配额, 将被迫等待直至先前的任务实例结束释放了线程.

统一到一个共享的池中, 好处自然是归一化管理, 容易从全局上比较不同任务的优先级, 做出合理的资源分配; 坏处可能就是需要去实现这样一个支持配额的共享线程池. 当然, 若不觉得多个线程池有什么不好, 悲观策略其实意义不大:(.

乐观策略

无论是使用悲观策略的共享线程池, 还是精心规划多个线程池, 由于都是预定义, 难免在环境变化过程中出现线程资源不足或闲置的情况. 要是可以这样, 某个时段当A任务较少时,  它所闲置的线程能协调给负载较高的B任务, 那就完美了!

故,  共享线程池的乐观策略就是在保证每种任务预留最低资源的情况下, 允许任务依据一个弹性(elastic)配额去争抢线程资源, 达到线程利用率的最大化. 如有100个线程的池, A任务大部分的时候负载较高, 则给予50个的预留配额, 30个的弹性配额; 而B任务是偶尔某个时段复杂较高, 则给予20个线程的预留配额, 30个的弹性配额, 这样留了一个30个线程的资源空间, 让AB去合理竞争.

很多实现的细节, 还请参见源代码.

源代码

CentralExecutor.java

CentralExecutorTest.java

 

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