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| author | Kartik K. Agaram <vc@akkartik.com> | 2016-05-21 17:44:53 -0700 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2016-05-21 17:44:53 -0700 |
| commit | 2f02189ddcdeb7d25b0ca9bd5b955b764d41a1a7 (patch) | |
| tree | 7c2e8b6e37ae3201dc01e90bcb390ee60b7f4a77 /html/061scheduler.cc.html | |
| parent | 61c025b11ed4ddd002f09f061fd77c75d8b6d0ba (diff) | |
| download | mu-2f02189ddcdeb7d25b0ca9bd5b955b764d41a1a7.tar.gz | |
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| -rw-r--r-- | html/061scheduler.cc.html | 593 |
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diff --git a/html/061scheduler.cc.html b/html/061scheduler.cc.html new file mode 100644 index 00000000..f5c231de --- /dev/null +++ b/html/061scheduler.cc.html @@ -0,0 +1,593 @@ +<!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 - 061scheduler.cc</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v2"> +<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-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 12pt; font-size: 1em; } +.Constant { color: #00a0a0; } +.traceAbsent { color: #c00000; } +.cSpecial { color: #008000; } +.traceContains { color: #008000; } +.SalientComment { color: #00ffff; } +.Comment { color: #9090ff; } +.Delimiter { color: #800080; } +.Special { color: #c00000; } +.Identifier { color: #fcb165; } +.Normal { color: #eeeeee; background-color: #080808; padding-bottom: 1px; } +--> +</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> +def f1 [ + start-running f2 + <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> +] +def 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> +<span class="Normal">void</span> run_current_routine<span class="Delimiter">(</span><span class="Normal">int</span> time_slice<span class="Delimiter">)</span> +<span class="Delimiter">:(replace "while (!Current_routine->completed())" following "void run_current_routine(int time_slice)")</span> +<span class="Normal">int</span> ninstrs = <span class="Constant">0</span><span class="Delimiter">;</span> +<span class="Normal">while</span> <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> +<span class="Normal">enum</span> 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> +<span class="Normal">enum</span> 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> +<span class="Normal">int</span> Current_routine_index = <span class="Constant">0</span><span class="Delimiter">;</span> +<span class="Normal">int</span> 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> +<span class="Normal">void</span> run<span class="Delimiter">(</span>recipe_ordinal r<span class="Delimiter">)</span> <span class="Delimiter">{</span> + run<span class="Delimiter">(</span><span class="Normal">new</span> routine<span class="Delimiter">(</span>r<span class="Delimiter">));</span> +<span class="Delimiter">}</span> + +<span class="Delimiter">:(code)</span> +<span class="Normal">void</span> 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> + <span class="Normal">while</span> <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> + <span class="Normal">if</span> <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> + +<span class="Normal">bool</span> all_routines_done<span class="Delimiter">()</span> <span class="Delimiter">{</span> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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> + <span class="Normal">if</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">return</span> <span class="Constant">false</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> +<span class="Normal">void</span> 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> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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> + <span class="Normal">if</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="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> + <span class="Normal">const</span> call_stack& calls = Current_routine<span class="Delimiter">-></span>calls<span class="Delimiter">;</span> + <span class="Normal">for</span> <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> + <span class="Normal">if</span> <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> +<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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="Normal">delete</span> 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> +<span class="Normal">void</span> run_main<span class="Delimiter">(</span><span class="Normal">int</span> argc<span class="Delimiter">,</span> <span class="Normal">char</span>* 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> + assert<span class="Delimiter">(</span>r<span class="Delimiter">);</span> + routine* main_routine = <span class="Normal">new</span> routine<span class="Delimiter">(</span>r<span class="Delimiter">);</span> + <span class="Comment">// pass in commandline args as ingredients to main</span> + <span class="Comment">// todo: test this</span> + Current_routine = main_routine<span class="Delimiter">;</span> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">1</span><span class="Delimiter">;</span> i < argc<span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> + vector<<span class="Normal">double</span>> arg<span class="Delimiter">;</span> + arg<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>new_mu_string<span class="Delimiter">(</span>argv[i]<span class="Delimiter">));</span> + current_call<span class="Delimiter">().</span>ingredient_atoms<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>arg<span class="Delimiter">);</span> + <span class="Delimiter">}</span> + run<span class="Delimiter">(</span>main_routine<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> +<span class="Normal">int</span> id<span class="Delimiter">;</span> +<span class="Delimiter">:(before "End Globals")</span> +<span class="Normal">int</span> 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> +<span class="Normal">int</span> 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> +<span class="Normal">case</span> START_RUNNING: <span class="Delimiter">{</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span> + raise << 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> + <span class="Normal">if</span> <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 << 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> << to_string<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="Constant">"'</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> + <span class="Identifier">break</span><span class="Delimiter">;</span> +<span class="Delimiter">}</span> +<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> +<span class="Normal">case</span> START_RUNNING: <span class="Delimiter">{</span> + routine* new_routine = <span class="Normal">new</span> 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> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> 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> +def 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: "literal"}</span> +<span class="traceContains">+schedule: f1</span> +<span class="traceContains">+run: {2: "number"} <- copy {0: "literal"}</span> + +<span class="Delimiter">:(scenario scheduler_interleaves_routines)</span> +<span class="Special">% Scheduling_interval = 1;</span> +def f1 [ + start-running f2 + <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> +] +def 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-literal"}</span> +<span class="traceContains">+schedule: f2</span> +<span class="traceContains">+run: {3: "number"} <- copy {0: "literal"}</span> +<span class="traceContains">+schedule: f1</span> +<span class="traceContains">+run: {1: "number"} <- copy {0: "literal"}</span> +<span class="traceContains">+schedule: f2</span> +<span class="traceContains">+run: {4: "number"} <- copy {0: "literal"}</span> +<span class="traceContains">+schedule: f1</span> +<span class="traceContains">+run: {2: "number"} <- copy {0: "literal"}</span> + +<span class="Delimiter">:(scenario start_running_takes_ingredients)</span> +def f1 [ + start-running f2<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> +] +def 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> +def f1 [ + <span class="Constant">1</span>:number<span class="Special"> <- </span>start-running f2 +] +def 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> +def 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> +def 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> +def f1 [ + start-running f2 + <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> +] +def 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> + <span class="Normal">if</span> <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> +def main [ + start-running f1 + <span class="Comment"># f1 never actually runs because its parent completes without waiting for it</span> +] +def 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> +<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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> + <span class="Normal">if</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">continue</span><span class="Delimiter">;</span> + <span class="Normal">if</span> <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> + <span class="Normal">if</span> <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> +<span class="Normal">bool</span> has_completed_parent<span class="Delimiter">(</span><span class="Normal">int</span> routine_index<span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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> + <span class="Normal">if</span> <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> +def f1 [ + <span class="Constant">1</span>:number/child-id<span class="Special"> <- </span>start-running f2 + <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 +] +def 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> +<span class="Normal">case</span> ROUTINE_STATE: <span class="Delimiter">{</span> + <span class="Normal">if</span> <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 << 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> << to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'</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> + <span class="Normal">if</span> <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 << 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="Constant">"'</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> + <span class="Identifier">break</span><span class="Delimiter">;</span> +<span class="Delimiter">}</span> +<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> +<span class="Normal">case</span> ROUTINE_STATE: <span class="Delimiter">{</span> + <span class="Normal">int</span> 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> + <span class="Normal">int</span> result = -<span class="Constant">1</span><span class="Delimiter">;</span> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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> + <span class="Normal">if</span> <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> +<span class="Normal">case</span> RESTART: <span class="Delimiter">{</span> + <span class="Normal">if</span> <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 << 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> << to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'</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> + <span class="Normal">if</span> <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 << 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="Constant">"'</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> + <span class="Identifier">break</span><span class="Delimiter">;</span> +<span class="Delimiter">}</span> +<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> +<span class="Normal">case</span> RESTART: <span class="Delimiter">{</span> + <span class="Normal">int</span> 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> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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> + <span class="Normal">if</span> <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> +<span class="Normal">case</span> STOP: <span class="Delimiter">{</span> + <span class="Normal">if</span> <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 << 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> << to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'</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> + <span class="Normal">if</span> <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 << 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="Constant">"'</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> + <span class="Identifier">break</span><span class="Delimiter">;</span> +<span class="Delimiter">}</span> +<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> +<span class="Normal">case</span> STOP: <span class="Delimiter">{</span> + <span class="Normal">int</span> 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> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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> + <span class="Normal">if</span> <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> +<span class="Normal">case</span> _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> +<span class="Normal">case</span> _DUMP_ROUTINES: <span class="Delimiter">{</span> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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> +def f1 [ + <span class="Constant">1</span>:number/child-id<span class="Special"> <- </span>start-running f2 + 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-<span class="Normal">if</span> <span class="Constant">2</span>:number<span class="Delimiter">,</span> -<span class="Constant">2</span>:offset +] +def 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> +<span class="Normal">if</span> <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>limit >= <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Normal">if</span> <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> + <span class="Normal">else</span> <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 Test Teardown")</span> +<span class="Normal">if</span> <span class="Delimiter">(</span>Passed && any_routines_with_error<span class="Delimiter">())</span> <span class="Delimiter">{</span> + Passed = <span class="Constant">false</span><span class="Delimiter">;</span> + raise << <span class="Constant">"some routines died with errors</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> + ++Num_failures<span class="Delimiter">;</span> +<span class="Delimiter">}</span> +<span class="Delimiter">:(before "End Mu Test Teardown")</span> +<span class="Normal">if</span> <span class="Delimiter">(</span>Passed && any_routines_with_error<span class="Delimiter">())</span> <span class="Delimiter">{</span> + Passed = <span class="Constant">false</span><span class="Delimiter">;</span> + raise << Current_scenario<span class="Delimiter">-></span>name << <span class="Constant">": some routines died with errors</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> + ++Num_failures<span class="Delimiter">;</span> +<span class="Delimiter">}</span> + +<span class="Delimiter">:(code)</span> +<span class="Normal">bool</span> any_routines_with_error<span class="Delimiter">()</span> <span class="Delimiter">{</span> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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> + <span class="Normal">if</span> <span class="Delimiter">(</span>Routines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)-></span>state == DISCONTINUED<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="Delimiter">:(before "End routine Fields")</span> +<span class="Normal">int</span> 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> +<span class="Normal">case</span> LIMIT_TIME: <span class="Delimiter">{</span> + <span class="Normal">if</span> <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 << 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> << to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'</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> + <span class="Normal">if</span> <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 << 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="Constant">"'</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> + <span class="Normal">if</span> <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 << 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="Constant">"'</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> + <span class="Identifier">break</span><span class="Delimiter">;</span> +<span class="Delimiter">}</span> +<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> +<span class="Normal">case</span> LIMIT_TIME: <span class="Delimiter">{</span> + <span class="Normal">int</span> 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> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> 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> + <span class="Normal">if</span> <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> + +<span class="SalientComment">//:: make sure that each routine gets a different alloc to start</span> + +<span class="Delimiter">:(scenario new_concurrent)</span> +def f1 [ + start-running f2 + <span class="Constant">1</span>:address:number/<span class="Special">raw <- </span><span class="Normal">new</span> number:type + <span class="Comment"># wait for f2 to complete</span> + <span class="Delimiter">{</span> + loop-unless <span class="Constant">4</span>:number/<span class="Special">raw</span> + <span class="Delimiter">}</span> +] +def f2 [ + <span class="Constant">2</span>:address:number/<span class="Special">raw <- </span><span class="Normal">new</span> number:type + <span class="Comment"># hack: assumes scheduler implementation</span> + <span class="Constant">3</span>:boolean/<span class="Special">raw <- </span>equal <span class="Constant">1</span>:address:number/<span class="Special">raw</span><span class="Delimiter">,</span> <span class="Constant">2</span>:address:number/<span class="Special">raw</span> + <span class="Comment"># signal f2 complete</span> + <span class="Constant">4</span>:number/<span class="Special">raw <- </span>copy <span class="Constant">1</span> +] +<span class="traceContains">+mem: storing 0 in location 3</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |