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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/046global.cc.html | |
| parent | 2da43c9462c7b7c1bb78d2f2826b3b97b4874973 (diff) | |
| download | mu-d009e158803956c76adbf8f58a62884c3e7affb3.tar.gz | |
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Diffstat (limited to 'html/046global.cc.html')
| -rw-r--r-- | html/046global.cc.html | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/html/046global.cc.html b/html/046global.cc.html new file mode 100644 index 00000000..d5a1331c --- /dev/null +++ b/html/046global.cc.html @@ -0,0 +1,127 @@ +<!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 - 046global.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; } +.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">// So far we have local variables, and we can nest local variables of short</span> +<span class="Comment">// lifetimes inside longer ones. Now let's support 'global' variables that</span> +<span class="Comment">// last for the life of a routine. If we create multiple routines they won't</span> +<span class="Comment">// have access to each other's globals.</span> + +<span class="Delimiter">:(scenario global_space)</span> +recipe main [ + <span class="Comment"># pretend shared:array:location; in practice we'll use new</span> + <span class="Constant">10</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> <span class="Comment"># refcount</span> + <span class="Constant">11</span>:number<span class="Special"> <- </span>copy <span class="Constant">5</span> <span class="Comment"># length</span> + <span class="Comment"># pretend shared:array:location; in practice we'll use new</span> + <span class="Constant">20</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span> <span class="Comment"># refcount</span> + <span class="Constant">21</span>:number<span class="Special"> <- </span>copy <span class="Constant">5</span> <span class="Comment"># length</span> + <span class="Comment"># actual start of this recipe</span> + global-space:address:shared:array:location<span class="Special"> <- </span>copy <span class="Constant">20</span>/unsafe + default-space:address:shared:array:location<span class="Special"> <- </span>copy <span class="Constant">10</span>/unsafe + <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">23</span> + <span class="Constant">1</span>:number/space:global<span class="Special"> <- </span>copy <span class="Constant">24</span> +] +<span class="Comment"># store to default space: 10 + /*skip refcount*/1 + /*skip length*/1 + /*index*/1</span> +<span class="traceContains">+mem: storing 23 in location 13</span> +<span class="Comment"># store to chained space: /*contents of location 12*/20 + /*skip refcount*/1 + /*skip length*/1 + /*index*/1</span> +<span class="traceContains">+mem: storing 24 in location 23</span> + +<span class="Comment">//: to support it, create another special variable called global space</span> +<span class="Delimiter">:(before "End Disqualified Reagents")</span> +if <span class="Delimiter">(</span>x<span class="Delimiter">.</span>name == <span class="Constant">"global-space"</span><span class="Delimiter">)</span> + x<span class="Delimiter">.</span>initialized = <span class="Constant">true</span><span class="Delimiter">;</span> +<span class="Delimiter">:(before "End is_special_name Cases")</span> +if <span class="Delimiter">(</span>s == <span class="Constant">"global-space"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span> + +<span class="Comment">//: writes to this variable go to a field in the current routine</span> +<span class="Delimiter">:(before "End routine Fields")</span> +long long int global_space<span class="Delimiter">;</span> +<span class="Delimiter">:(before "End routine Constructor")</span> +global_space = <span class="Constant">0</span><span class="Delimiter">;</span> +<span class="Delimiter">:(after "void write_memory(reagent x, vector<double> data)")</span> + if <span class="Delimiter">(</span>x<span class="Delimiter">.</span>name == <span class="Constant">"global-space"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> + if <span class="Delimiter">(</span>!scalar<span class="Delimiter">(</span>data<span class="Delimiter">)</span> + || !x<span class="Delimiter">.</span>type + || x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>value != get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"address"</span><span class="Delimiter">)</span> + || !x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right + || x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>value != get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"shared"</span><span class="Delimiter">)</span> + || !x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right + || x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>value != get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"array"</span><span class="Delimiter">)</span> + || !x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right + || x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>value != get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"location"</span><span class="Delimiter">)</span> + || x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span> + raise_error << maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> << <span class="Constant">"'global-space' should be of type address:shared:array:location, but tried to write "</span> << to_string<span class="Delimiter">(</span>data<span class="Delimiter">)</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> + <span class="Delimiter">}</span> + if <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>global_space<span class="Delimiter">)</span> + raise_error << <span class="Constant">"routine already has a global-space; you can't over-write your globals"</span> << end<span class="Delimiter">();</span> + Current_routine<span class="Delimiter">-></span>global_space = data<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> + <span class="Identifier">return</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + +<span class="Comment">//: now marking variables as /space:global looks them up inside this field</span> +<span class="Delimiter">:(after "long long int space_base(const reagent& x)")</span> + if <span class="Delimiter">(</span>is_global<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Delimiter">{</span> + if <span class="Delimiter">(</span>!Current_routine<span class="Delimiter">-></span>global_space<span class="Delimiter">)</span> + raise_error << <span class="Constant">"routine has no global space</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> + <span class="Identifier">return</span> Current_routine<span class="Delimiter">-></span>global_space + <span class="Comment">/*</span><span class="Comment">skip refcount</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + +<span class="Comment">//: for now let's not bother giving global variables names.</span> +<span class="Comment">//: don't want to make them too comfortable to use.</span> + +<span class="Delimiter">:(scenario global_space_with_names)</span> +<span class="Special">% Hide_errors = true;</span> +recipe main [ + global-space:address:shared:array:location<span class="Special"> <- </span>new location:type<span class="Delimiter">,</span> <span class="Constant">10</span> + x:number<span class="Special"> <- </span>copy <span class="Constant">23</span> + <span class="Constant">1</span>:number/space:global<span class="Special"> <- </span>copy <span class="Constant">24</span> +] +<span class="Comment"># don't complain about mixing numeric addresses and names</span> +$error: <span class="Constant">0</span> + +<span class="Delimiter">:(after "bool is_numeric_location(const reagent& x)")</span> + if <span class="Delimiter">(</span>is_global<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> + +<span class="Comment">//: helpers</span> + +<span class="Delimiter">:(code)</span> +bool is_global<span class="Delimiter">(</span>const reagent& x<span class="Delimiter">)</span> <span class="Delimiter">{</span> + for <span class="Delimiter">(</span>long long int i = <span class="Comment">/*</span><span class="Comment">skip name:type</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>x<span class="Delimiter">.</span>properties<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> + if <span class="Delimiter">(</span>x<span class="Delimiter">.</span>properties<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>first == <span class="Constant">"space"</span><span class="Delimiter">)</span> + <span class="Identifier">return</span> x<span class="Delimiter">.</span>properties<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>second && x<span class="Delimiter">.</span>properties<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>second<span class="Delimiter">-></span>value == <span class="Constant">"global"</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> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |