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| author | Kartik K. Agaram <vc@akkartik.com> | 2016-01-26 23:47:23 -0800 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2016-01-26 23:47:23 -0800 |
| commit | d009e158803956c76adbf8f58a62884c3e7affb3 (patch) | |
| tree | b88198e28d15cd1fc064f5300365a190decc4c50 /html/038scheduler.cc.html | |
| parent | 2da43c9462c7b7c1bb78d2f2826b3b97b4874973 (diff) | |
| download | mu-d009e158803956c76adbf8f58a62884c3e7affb3.tar.gz | |
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Diffstat (limited to 'html/038scheduler.cc.html')
| -rw-r--r-- | html/038scheduler.cc.html | 545 |
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diff --git a/html/038scheduler.cc.html b/html/038scheduler.cc.html deleted file mode 100644 index 56396b68..00000000 --- a/html/038scheduler.cc.html +++ /dev/null @@ -1,545 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> -<html> -<head> -<meta http-equiv="content-type" content="text/html; charset=UTF-8"> -<title>Mu - 038scheduler.cc</title> -<meta name="Generator" content="Vim/7.4"> -<meta name="plugin-version" content="vim7.4_v1"> -<meta name="syntax" content="cpp"> -<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> -<meta name="colorscheme" content="minimal"> -<style type="text/css"> -<!-- -pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } -body { font-family: monospace; color: #eeeeee; background-color: #080808; } -* { font-size: 1.05em; } -.traceContains { color: #008000; } -.traceAbsent { color: #c00000; } -.SalientComment { color: #00ffff; } -.cSpecial { color: #008000; } -.Comment { color: #9090ff; } -.Delimiter { color: #a04060; } -.Special { color: #ff6060; } -.Identifier { color: #804000; } -.Constant { color: #00a0a0; } ---> -</style> - -<script type='text/javascript'> -<!-- - ---> -</script> -</head> -<body> -<pre id='vimCodeElement'> -<span class="Comment">//: Run a second routine concurrently using 'start-running', without any</span> -<span class="Comment">//: guarantees on how the operations in each are interleaved with each other.</span> - -<span class="Delimiter">:(scenario scheduler)</span> -recipe f1 [ - start-running f2:recipe - <span class="Comment"># wait for f2 to run</span> - <span class="Delimiter">{</span> - jump-unless <span class="Constant">1</span>:number<span class="Delimiter">,</span> -<span class="Constant">1</span> - <span class="Delimiter">}</span> -] -recipe f2 [ - <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">1</span> -] -<span class="traceContains">+schedule: f1</span> -<span class="traceContains">+schedule: f2</span> - -<span class="Comment">//: first, add a deadline to run(routine)</span> -<span class="Comment">//: these changes are ugly and brittle; just close your nose and get through the next few lines</span> -<span class="Delimiter">:(replace "void run_current_routine()")</span> -void run_current_routine<span class="Delimiter">(</span>long long int time_slice<span class="Delimiter">)</span> -<span class="Delimiter">:(replace "while (!Current_routine->completed())" following "void run_current_routine(long long int time_slice)")</span> -long long int ninstrs = <span class="Constant">0</span><span class="Delimiter">;</span> -while <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>state == RUNNING && ninstrs < time_slice<span class="Delimiter">)</span> -<span class="Delimiter">:(after "Running One Instruction")</span> -ninstrs++<span class="Delimiter">;</span> - -<span class="Comment">//: now the rest of the scheduler is clean</span> - -<span class="Delimiter">:(before "struct routine")</span> -enum routine_state <span class="Delimiter">{</span> - RUNNING<span class="Delimiter">,</span> - COMPLETED<span class="Delimiter">,</span> - <span class="Comment">// End routine States</span> -<span class="Delimiter">};</span> -<span class="Delimiter">:(before "End routine Fields")</span> -enum routine_state state<span class="Delimiter">;</span> -<span class="Delimiter">:(before "End routine Constructor")</span> -state = RUNNING<span class="Delimiter">;</span> - -<span class="Delimiter">:(before "End Globals")</span> -vector<routine*> Routines<span class="Delimiter">;</span> -long long int Current_routine_index = <span class="Constant">0</span><span class="Delimiter">;</span> -long long int Scheduling_interval = <span class="Constant">500</span><span class="Delimiter">;</span> -<span class="Delimiter">:(before "End Setup")</span> -Scheduling_interval = <span class="Constant">500</span><span class="Delimiter">;</span> -Routines<span class="Delimiter">.</span>clear<span class="Delimiter">();</span> -<span class="Delimiter">:(replace{} "void run(recipe_ordinal r)")</span> -void run<span class="Delimiter">(</span>recipe_ordinal r<span class="Delimiter">)</span> <span class="Delimiter">{</span> - run<span class="Delimiter">(</span>new routine<span class="Delimiter">(</span>r<span class="Delimiter">));</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(code)</span> -void run<span class="Delimiter">(</span>routine* rr<span class="Delimiter">)</span> <span class="Delimiter">{</span> - Routines<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>rr<span class="Delimiter">);</span> - Current_routine_index = <span class="Constant">0</span><span class="Delimiter">,</span> Current_routine = Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> - while <span class="Delimiter">(</span>!all_routines_done<span class="Delimiter">())</span> <span class="Delimiter">{</span> - skip_to_next_routine<span class="Delimiter">();</span> - assert<span class="Delimiter">(</span>Current_routine<span class="Delimiter">);</span> - assert<span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>state == RUNNING<span class="Delimiter">);</span> - trace<span class="Delimiter">(</span><span class="Constant">9990</span><span class="Delimiter">,</span> <span class="Constant">"schedule"</span><span class="Delimiter">)</span> << current_routine_label<span class="Delimiter">()</span> << end<span class="Delimiter">();</span> - run_current_routine<span class="Delimiter">(</span>Scheduling_interval<span class="Delimiter">);</span> - <span class="Comment">// Scheduler State Transitions</span> - if <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>completed<span class="Delimiter">())</span> - Current_routine<span class="Delimiter">-></span>state = COMPLETED<span class="Delimiter">;</span> - <span class="Comment">// End Scheduler State Transitions</span> - - <span class="Comment">// Scheduler Cleanup</span> - <span class="Comment">// End Scheduler Cleanup</span> - <span class="Delimiter">}</span> -<span class="Delimiter">}</span> - -bool all_routines_done<span class="Delimiter">()</span> <span class="Delimiter">{</span> - for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>state == RUNNING<span class="Delimiter">)</span> <span class="Delimiter">{</span> - <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Delimiter">}</span> - <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="Comment">// skip Current_routine_index past non-RUNNING routines</span> -void skip_to_next_routine<span class="Delimiter">()</span> <span class="Delimiter">{</span> - assert<span class="Delimiter">(</span>!Routines<span class="Delimiter">.</span>empty<span class="Delimiter">());</span> - assert<span class="Delimiter">(</span>Current_routine_index < SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">));</span> - for <span class="Delimiter">(</span>long long int i = <span class="Delimiter">(</span>Current_routine_index+<span class="Constant">1</span><span class="Delimiter">)</span>%SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">);</span> i != Current_routine_index<span class="Delimiter">;</span> i = <span class="Delimiter">(</span>i+<span class="Constant">1</span><span class="Delimiter">)</span>%SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">))</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>state == RUNNING<span class="Delimiter">)</span> <span class="Delimiter">{</span> - Current_routine_index = i<span class="Delimiter">;</span> - Current_routine = Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> - <span class="Identifier">return</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Delimiter">}</span> -<span class="Delimiter">}</span> - -string current_routine_label<span class="Delimiter">()</span> <span class="Delimiter">{</span> - ostringstream result<span class="Delimiter">;</span> - const call_stack& calls = Current_routine<span class="Delimiter">-></span>calls<span class="Delimiter">;</span> - for <span class="Delimiter">(</span>call_stack::const_iterator p = calls<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != calls<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>p != calls<span class="Delimiter">.</span>begin<span class="Delimiter">())</span> result << <span class="Constant">'/'</span><span class="Delimiter">;</span> - result << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> p<span class="Delimiter">-></span>running_recipe<span class="Delimiter">).</span>name<span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Identifier">return</span> result<span class="Delimiter">.</span>str<span class="Delimiter">();</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(before "End Teardown")</span> -for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> - delete Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> -Routines<span class="Delimiter">.</span>clear<span class="Delimiter">();</span> -Current_routine = <span class="Constant">NULL</span><span class="Delimiter">;</span> - -<span class="Comment">//: special case for the very first routine</span> -<span class="Delimiter">:(replace{} "void run_main(int argc, char* argv[])")</span> -void run_main<span class="Delimiter">(</span>int argc<span class="Delimiter">,</span> char* argv[]<span class="Delimiter">)</span> <span class="Delimiter">{</span> - recipe_ordinal r = get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"main"</span><span class="Delimiter">);</span> - if <span class="Delimiter">(</span>r<span class="Delimiter">)</span> <span class="Delimiter">{</span> - routine* main_routine = new routine<span class="Delimiter">(</span>r<span class="Delimiter">);</span> - <span class="Comment">// Update main_routine</span> - run<span class="Delimiter">(</span>main_routine<span class="Delimiter">);</span> - <span class="Delimiter">}</span> -<span class="Delimiter">}</span> - -<span class="SalientComment">//:: To schedule new routines to run, call 'start-running'.</span> - -<span class="Comment">//: 'start-running' will return a unique id for the routine that was created.</span> -<span class="Comment">//: routine id is a number, but don't do any arithmetic on it</span> -<span class="Delimiter">:(before "End routine Fields")</span> -long long int id<span class="Delimiter">;</span> -<span class="Delimiter">:(before "End Globals")</span> -long long int Next_routine_id = <span class="Constant">1</span><span class="Delimiter">;</span> -<span class="Delimiter">:(before "End Setup")</span> -Next_routine_id = <span class="Constant">1</span><span class="Delimiter">;</span> -<span class="Delimiter">:(before "End routine Constructor")</span> -id = Next_routine_id<span class="Delimiter">;</span> -Next_routine_id++<span class="Delimiter">;</span> - -<span class="Comment">//: routines save the routine that spawned them</span> -<span class="Delimiter">:(before "End routine Fields")</span> -<span class="Comment">// todo: really should be routine_id, but that's less efficient.</span> -long long int parent_index<span class="Delimiter">;</span> <span class="Comment">// only < 0 if there's no parent_index</span> -<span class="Delimiter">:(before "End routine Constructor")</span> -parent_index = -<span class="Constant">1</span><span class="Delimiter">;</span> - -<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span> -START_RUNNING<span class="Delimiter">,</span> -<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span> -put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"start-running"</span><span class="Delimiter">,</span> START_RUNNING<span class="Delimiter">);</span> -<span class="Delimiter">:(before "End Primitive Recipe Checks")</span> -case START_RUNNING: <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'start-running' requires at least one ingredient: the recipe to start running</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - if <span class="Delimiter">(</span>!is_mu_recipe<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"first ingredient of 'start-running' should be a recipe, but got "</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> -<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> -case START_RUNNING: <span class="Delimiter">{</span> - routine* new_routine = new routine<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span> - new_routine<span class="Delimiter">-></span>parent_index = Current_routine_index<span class="Delimiter">;</span> - <span class="Comment">// populate ingredients</span> - for <span class="Delimiter">(</span>long long int i = <span class="Constant">1</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> - new_routine<span class="Delimiter">-></span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>ingredient_atoms<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span> - reagent ingredient = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> - canonize_type<span class="Delimiter">(</span>ingredient<span class="Delimiter">);</span> - new_routine<span class="Delimiter">-></span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>ingredient<span class="Delimiter">);</span> - <span class="Delimiter">}</span> - Routines<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>new_routine<span class="Delimiter">);</span> - products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span> - products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>new_routine<span class="Delimiter">-></span>id<span class="Delimiter">);</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(scenario scheduler_runs_single_routine)</span> -<span class="Special">% Scheduling_interval = 1;</span> -recipe f1 [ - <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> -] -<span class="traceContains">+schedule: f1</span> -<span class="traceContains">+run: 1:number <- copy 0</span> -<span class="traceContains">+schedule: f1</span> -<span class="traceContains">+run: 2:number <- copy 0</span> - -<span class="Delimiter">:(scenario scheduler_interleaves_routines)</span> -<span class="Special">% Scheduling_interval = 1;</span> -recipe f1 [ - start-running f2:recipe - <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> -] -recipe f2 [ - <span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> -] -<span class="traceContains">+schedule: f1</span> -<span class="traceContains">+run: start-running f2:recipe</span> -<span class="traceContains">+schedule: f2</span> -<span class="traceContains">+run: 3:number <- copy 0</span> -<span class="traceContains">+schedule: f1</span> -<span class="traceContains">+run: 1:number <- copy 0</span> -<span class="traceContains">+schedule: f2</span> -<span class="traceContains">+run: 4:number <- copy 0</span> -<span class="traceContains">+schedule: f1</span> -<span class="traceContains">+run: 2:number <- copy 0</span> - -<span class="Delimiter">:(scenario start_running_takes_ingredients)</span> -recipe f1 [ - start-running f2:recipe<span class="Delimiter">,</span> <span class="Constant">3</span> - <span class="Comment"># wait for f2 to run</span> - <span class="Delimiter">{</span> - jump-unless <span class="Constant">1</span>:number<span class="Delimiter">,</span> -<span class="Constant">1</span> - <span class="Delimiter">}</span> -] -recipe f2 [ - <span class="Constant">1</span>:number<span class="Special"> <- </span>next-ingredient - <span class="Constant">2</span>:number<span class="Special"> <- </span>add <span class="Constant">1</span>:number<span class="Delimiter">,</span> <span class="Constant">1</span> -] -<span class="traceContains">+mem: storing 4 in location 2</span> - -<span class="Delimiter">:(scenario start_running_returns_routine_id)</span> -recipe f1 [ - <span class="Constant">1</span>:number<span class="Special"> <- </span>start-running f2:recipe -] -recipe f2 [ - <span class="Constant">12</span>:number<span class="Special"> <- </span>copy <span class="Constant">44</span> -] -<span class="traceContains">+mem: storing 2 in location 1</span> - -<span class="Comment">//: this scenario will require some careful setup in escaped C++</span> -<span class="Comment">//: (straining our tangle capabilities to near-breaking point)</span> -<span class="Delimiter">:(scenario scheduler_skips_completed_routines)</span> -<span class="Special">% recipe_ordinal f1 = load("recipe f1 [\n1:number <- copy 0\n]\n").front();</span> -<span class="Special">% recipe_ordinal f2 = load("recipe f2 [\n2:number <- copy 0\n]\n").front();</span> -<span class="Special">% Routines.push_back(new routine(f1)); // f1 meant to run</span> -<span class="Special">% Routines.push_back(new routine(f2));</span> -<span class="Special">% Routines.back()->state = COMPLETED; // f2 not meant to run</span> -<span class="Comment"># must have at least one routine without escaping</span> -recipe f3 [ - <span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> -] -<span class="Comment"># by interleaving '+' lines with '-' lines, we allow f1 and f3 to run in any order</span> -<span class="traceContains">+schedule: f1</span> -<span class="traceContains">+mem: storing 0 in location 1</span> -<span class="traceAbsent">-schedule: f2</span> -<span class="traceAbsent">-mem: storing 0 in location 2</span> -<span class="traceContains">+schedule: f3</span> -<span class="traceContains">+mem: storing 0 in location 3</span> - -<span class="Delimiter">:(scenario scheduler_starts_at_middle_of_routines)</span> -<span class="Special">% Routines.push_back(new routine(COPY));</span> -<span class="Special">% Routines.back()->state = COMPLETED;</span> -recipe f1 [ - <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> -] -<span class="traceContains">+schedule: f1</span> -<span class="traceAbsent">-run: idle</span> - -<span class="SalientComment">//:: Errors in a routine cause it to terminate.</span> - -<span class="Delimiter">:(scenario scheduler_terminates_routines_after_errors)</span> -<span class="Special">% Hide_errors = true;</span> -<span class="Special">% Scheduling_interval = 2;</span> -recipe f1 [ - start-running f2:recipe - <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> -] -recipe f2 [ - <span class="Comment"># divide by 0 twice</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>divide-with-remainder <span class="Constant">4</span><span class="Delimiter">,</span> <span class="Constant">0</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>divide-with-remainder <span class="Constant">4</span><span class="Delimiter">,</span> <span class="Constant">0</span> -] -<span class="Comment"># f2 should stop after first divide by 0</span> -<span class="traceContains">+error: f2: divide by zero in '3:number <- divide-with-remainder 4, 0'</span> -<span class="traceAbsent">-error: f2: divide by zero in '4:number <- divide-with-remainder 4, 0'</span> - -<span class="Delimiter">:(after "operator<<(ostream& os, unused end)")</span> - if <span class="Delimiter">(</span>Trace_stream && Trace_stream<span class="Delimiter">-></span>curr_label == <span class="Constant">"error"</span> && Current_routine<span class="Delimiter">)</span> <span class="Delimiter">{</span> - Current_routine<span class="Delimiter">-></span>state = COMPLETED<span class="Delimiter">;</span> - <span class="Delimiter">}</span> - -<span class="SalientComment">//:: Routines are marked completed when their parent completes.</span> - -<span class="Delimiter">:(scenario scheduler_kills_orphans)</span> -recipe main [ - start-running f1:recipe - <span class="Comment"># f1 never actually runs because its parent completes without waiting for it</span> -] -recipe f1 [ - <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> -] -<span class="traceAbsent">-schedule: f1</span> - -<span class="Delimiter">:(before "End Scheduler Cleanup")</span> -for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>state == COMPLETED<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> - if <span class="Delimiter">(</span>Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>parent_index < <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> <span class="Comment">// root thread</span> - if <span class="Delimiter">(</span>has_completed_parent<span class="Delimiter">(</span>i<span class="Delimiter">))</span> <span class="Delimiter">{</span> - Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>state = COMPLETED<span class="Delimiter">;</span> - <span class="Delimiter">}</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(code)</span> -bool has_completed_parent<span class="Delimiter">(</span>long long int routine_index<span class="Delimiter">)</span> <span class="Delimiter">{</span> - for <span class="Delimiter">(</span>long long int j = routine_index<span class="Delimiter">;</span> j >= <span class="Constant">0</span><span class="Delimiter">;</span> j = Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)-></span>parent_index<span class="Delimiter">)</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)-></span>state == COMPLETED<span class="Delimiter">)</span> - <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="SalientComment">//:: 'routine-state' can tell if a given routine id is running</span> - -<span class="Delimiter">:(scenario routine_state_test)</span> -<span class="Special">% Scheduling_interval = 2;</span> -recipe f1 [ - <span class="Constant">1</span>:number/child-id<span class="Special"> <- </span>start-running f2:recipe - <span class="Constant">12</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> <span class="Comment"># race condition since we don't care about location 12</span> - <span class="Comment"># thanks to Scheduling_interval, f2's one instruction runs in between here and completes</span> - <span class="Constant">2</span>:number/state<span class="Special"> <- </span>routine-state <span class="Constant">1</span>:number/child-id -] -recipe f2 [ - <span class="Constant">12</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> - <span class="Comment"># trying to run a second instruction marks routine as completed</span> -] -<span class="Comment"># recipe f2 should be in state COMPLETED</span> -<span class="traceContains">+mem: storing 1 in location 2</span> - -<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span> -ROUTINE_STATE<span class="Delimiter">,</span> -<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span> -put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"routine-state"</span><span class="Delimiter">,</span> ROUTINE_STATE<span class="Delimiter">);</span> -<span class="Delimiter">:(before "End Primitive Recipe Checks")</span> -case ROUTINE_STATE: <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'routine-state' requires exactly one ingredient, but got "</span> << inst<span class="Delimiter">.</span>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - if <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"first ingredient of 'routine-state' should be a routine id generated by 'start-running', but got "</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> -<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> -case ROUTINE_STATE: <span class="Delimiter">{</span> - long long int id = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> - long long int result = -<span class="Constant">1</span><span class="Delimiter">;</span> - for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>id == id<span class="Delimiter">)</span> <span class="Delimiter">{</span> - result = Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>state<span class="Delimiter">;</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Delimiter">}</span> - products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span> - products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>result<span class="Delimiter">);</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="SalientComment">//:: miscellaneous helpers</span> - -<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span> -RESTART<span class="Delimiter">,</span> -<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span> -put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"restart"</span><span class="Delimiter">,</span> RESTART<span class="Delimiter">);</span> -<span class="Delimiter">:(before "End Primitive Recipe Checks")</span> -case RESTART: <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'restart' requires exactly one ingredient, but got "</span> << inst<span class="Delimiter">.</span>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - if <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"first ingredient of 'restart' should be a routine id generated by 'start-running', but got "</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> -<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> -case RESTART: <span class="Delimiter">{</span> - long long int id = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> - for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>id == id<span class="Delimiter">)</span> <span class="Delimiter">{</span> - Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>state = RUNNING<span class="Delimiter">;</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span> -STOP<span class="Delimiter">,</span> -<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span> -put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"stop"</span><span class="Delimiter">,</span> STOP<span class="Delimiter">);</span> -<span class="Delimiter">:(before "End Primitive Recipe Checks")</span> -case STOP: <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'stop' requires exactly one ingredient, but got "</span> << inst<span class="Delimiter">.</span>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - if <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"first ingredient of 'stop' should be a routine id generated by 'start-running', but got "</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> -<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> -case STOP: <span class="Delimiter">{</span> - long long int id = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> - for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>id == id<span class="Delimiter">)</span> <span class="Delimiter">{</span> - Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>state = COMPLETED<span class="Delimiter">;</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span> -_DUMP_ROUTINES<span class="Delimiter">,</span> -<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span> -put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"$dump-routines"</span><span class="Delimiter">,</span> _DUMP_ROUTINES<span class="Delimiter">);</span> -<span class="Delimiter">:(before "End Primitive Recipe Checks")</span> -case _DUMP_ROUTINES: <span class="Delimiter">{</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> -<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> -case _DUMP_ROUTINES: <span class="Delimiter">{</span> - for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> - cerr << i << <span class="Constant">": "</span> << Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>id << <span class="Constant">' '</span> << Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>state << <span class="Constant">' '</span> << Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>parent_index << <span class="cSpecial">'\n'</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> - -<span class="Comment">//: support for stopping routines after some number of cycles</span> - -<span class="Delimiter">:(scenario routine_discontinues_past_limit)</span> -<span class="Special">% Scheduling_interval = 2;</span> -recipe f1 [ - <span class="Constant">1</span>:number/child-id<span class="Special"> <- </span>start-running f2:recipe - limit-time <span class="Constant">1</span>:number/child-id<span class="Delimiter">,</span> <span class="Constant">10</span> - <span class="Comment"># padding loop just to make sure f2 has time to completed</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">20</span> - <span class="Constant">2</span>:number<span class="Special"> <- </span>subtract <span class="Constant">2</span>:number<span class="Delimiter">,</span> <span class="Constant">1</span> - jump-if <span class="Constant">2</span>:number<span class="Delimiter">,</span> -<span class="Constant">2</span>:offset -] -recipe f2 [ - jump -<span class="Constant">1</span>:offset <span class="Comment"># run forever</span> - $print [should never get here]<span class="Delimiter">,</span> <span class="Constant">10</span>/newline -] -<span class="Comment"># f2 terminates</span> -<span class="traceContains">+schedule: discontinuing routine 2</span> - -<span class="Delimiter">:(before "End routine States")</span> -DISCONTINUED<span class="Delimiter">,</span> -<span class="Delimiter">:(before "End Scheduler State Transitions")</span> -if <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>limit >= <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>limit <= Scheduling_interval<span class="Delimiter">)</span> <span class="Delimiter">{</span> - trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">"schedule"</span><span class="Delimiter">)</span> << <span class="Constant">"discontinuing routine "</span> << Current_routine<span class="Delimiter">-></span>id << end<span class="Delimiter">();</span> - Current_routine<span class="Delimiter">-></span>state = DISCONTINUED<span class="Delimiter">;</span> - Current_routine<span class="Delimiter">-></span>limit = <span class="Constant">0</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - else <span class="Delimiter">{</span> - Current_routine<span class="Delimiter">-></span>limit -= Scheduling_interval<span class="Delimiter">;</span> - <span class="Delimiter">}</span> -<span class="Delimiter">}</span> - -<span class="Delimiter">:(before "End routine Fields")</span> -long long int limit<span class="Delimiter">;</span> -<span class="Delimiter">:(before "End routine Constructor")</span> -limit = -<span class="Constant">1</span><span class="Delimiter">;</span> <span class="Comment">/*</span><span class="Comment"> no limit </span><span class="Comment">*/</span> - -<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span> -LIMIT_TIME<span class="Delimiter">,</span> -<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span> -put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"limit-time"</span><span class="Delimiter">,</span> LIMIT_TIME<span class="Delimiter">);</span> -<span class="Delimiter">:(before "End Primitive Recipe Checks")</span> -case LIMIT_TIME: <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'limit-time' requires exactly two ingredient, but got "</span> << inst<span class="Delimiter">.</span>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - if <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"first ingredient of 'limit-time' should be a routine id generated by 'start-running', but got "</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - if <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span> - raise_error << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"second ingredient of 'limit-time' should be a number (of instructions to run for), but got "</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> -<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> -case LIMIT_TIME: <span class="Delimiter">{</span> - long long int id = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> - for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>Routines<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> - if <span class="Delimiter">(</span>Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>id == id<span class="Delimiter">)</span> <span class="Delimiter">{</span> - Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>limit = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> - <span class="Delimiter">}</span> - <span class="Delimiter">}</span> - <span class="Identifier">break</span><span class="Delimiter">;</span> -<span class="Delimiter">}</span> -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> |