1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
<!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 - 036abandon.cc</title>
<meta name="Generator" content="Vim/8.0">
<meta name="plugin-version" content="vim7.4_v2">
<meta name="syntax" content="cpp">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; }
body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; }
a { color:#eeeeee; text-decoration: none; }
a:hover { text-decoration: underline; }
* { font-size: 12pt; font-size: 1em; }
.cSpecial { color: #008000; }
.LineNr { color: #444444; }
.Constant { color: #00a0a0; }
.muRecipe { color: #ff8700; }
.Delimiter { color: #800080; }
.Special { color: #c00000; }
.Identifier { color: #c0a020; }
.Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; }
.Comment { color: #9090ff; }
.Comment a { color:#0000ee; text-decoration:underline; }
.CommentedCode { color: #6c6c6c; }
.traceContains { color: #008000; }
-->
</style>
<script type='text/javascript'>
<!--
/* function to open any folds containing a jumped-to line before jumping to it */
function JumpToLine()
{
var lineNum;
lineNum = window.location.hash;
lineNum = lineNum.substr(1); /* strip off '#' */
if (lineNum.indexOf('L') == -1) {
lineNum = 'L'+lineNum;
}
lineElem = document.getElementById(lineNum);
/* Always jump to new location even if the line was hidden inside a fold, or
* we corrected the raw number to a line ID.
*/
if (lineElem) {
lineElem.scrollIntoView(true);
}
return true;
}
if ('onhashchange' in window) {
window.onhashchange = JumpToLine;
}
-->
</script>
</head>
<body onload='JumpToLine();'>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Reclaiming memory when it's no longer used.</span>
<span id="L2" class="LineNr"> 2 </span>
<span id="L3" class="LineNr"> 3 </span><span class="Delimiter">:(scenario new_reclaim)</span>
<span id="L4" class="LineNr"> 4 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L5" class="LineNr"> 5 </span> <span class="Constant">10</span>:&:num<span class="Special"> <- </span><span class="Normal">new</span> <span class="Constant">number:type</span>
<span id="L6" class="LineNr"> 6 </span> <span class="Constant">20</span>:num<span class="Special"> <- </span>deaddress <span class="Constant">10</span>:&:num
<span id="L7" class="LineNr"> 7 </span> <a href='036abandon.cc.html#L63'>abandon</a> <span class="Constant">10</span>:&:num
<span id="L8" class="LineNr"> 8 </span> <span class="Constant">30</span>:&:num<span class="Special"> <- </span><span class="Normal">new</span> <span class="Constant">number:type</span> <span class="Comment"># must be same size as abandoned memory to reuse</span>
<span id="L9" class="LineNr"> 9 </span> <span class="Constant">40</span>:num<span class="Special"> <- </span>deaddress <span class="Constant">30</span>:&:num
<span id="L10" class="LineNr"> 10 </span> <span class="Constant">50</span>:<span class="Normal">bool</span><span class="Special"> <- </span>equal <span class="Constant">20</span>:num<span class="Delimiter">,</span> <span class="Constant">40</span>:num
<span id="L11" class="LineNr"> 11 </span>]
<span id="L12" class="LineNr"> 12 </span><span class="Comment"># both allocations should have returned the same address</span>
<span id="L13" class="LineNr"> 13 </span><span class="traceContains">+mem: storing 1 in location 50</span>
<span id="L14" class="LineNr"> 14 </span>
<span id="L15" class="LineNr"> 15 </span><span class="Comment">//: When abandoning addresses we'll save them to a 'free list', segregated by size.</span>
<span id="L16" class="LineNr"> 16 </span>
<span id="L17" class="LineNr"> 17 </span><span class="Comment">//: Before, suppose variable V contains address A which points to payload P:</span>
<span id="L18" class="LineNr"> 18 </span><span class="Comment">//: location V contains an alloc-id N</span>
<span id="L19" class="LineNr"> 19 </span><span class="Comment">//: location V+1 contains A</span>
<span id="L20" class="LineNr"> 20 </span><span class="Comment">//: location A contains alloc-id N</span>
<span id="L21" class="LineNr"> 21 </span><span class="Comment">//: location A+1 onwards contains P</span>
<span id="L22" class="LineNr"> 22 </span><span class="Comment">//: Additionally, suppose the head of the free list is initially F.</span>
<span id="L23" class="LineNr"> 23 </span><span class="Comment">//: After abandoning:</span>
<span id="L24" class="LineNr"> 24 </span><span class="Comment">//: location V contains invalid alloc-id -1</span>
<span id="L25" class="LineNr"> 25 </span><span class="Comment">//: location V+1 contains 0</span>
<span id="L26" class="LineNr"> 26 </span><span class="Comment">//: location A contains invalid alloc-id N</span>
<span id="L27" class="LineNr"> 27 </span><span class="Comment">//: location A+1 contains the previous head of free-list F</span>
<span id="L28" class="LineNr"> 28 </span>
<span id="L29" class="LineNr"> 29 </span><span class="Delimiter">:(before "End routine Fields")</span>
<span id="L30" class="LineNr"> 30 </span>map<<span class="Normal">int</span><span class="Delimiter">,</span> <span class="Normal">int</span>> free_list<span class="Delimiter">;</span>
<span id="L31" class="LineNr"> 31 </span>
<span id="L32" class="LineNr"> 32 </span><span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
<span id="L33" class="LineNr"> 33 </span>ABANDON<span class="Delimiter">,</span>
<span id="L34" class="LineNr"> 34 </span><span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
<span id="L35" class="LineNr"> 35 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"abandon"</span><span class="Delimiter">,</span> ABANDON<span class="Delimiter">);</span>
<span id="L36" class="LineNr"> 36 </span><span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span id="L37" class="LineNr"> 37 </span><span class="Normal">case</span> ABANDON: <span class="Delimiter">{</span>
<span id="L38" class="LineNr"> 38 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L39" class="LineNr"> 39 </span> <a href='003trace.cc.html#L197'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><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">"'abandon' shouldn't write to any products in '"</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 id="L40" class="LineNr"> 40 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L41" class="LineNr"> 41 </span> <span class="Delimiter">}</span>
<span id="L42" class="LineNr"> 42 </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 < <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L43" class="LineNr"> 43 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_address<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
<span id="L44" class="LineNr"> 44 </span> <a href='003trace.cc.html#L197'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><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">"ingredients of 'abandon' should be addresses, but ingredient "</span> << i << <span class="Constant">" is '"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span id="L45" class="LineNr"> 45 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L46" class="LineNr"> 46 </span> <span class="Delimiter">}</span>
<span id="L47" class="LineNr"> 47 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L48" class="LineNr"> 48 </span><span class="Delimiter">}</span>
<span id="L49" class="LineNr"> 49 </span><span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span id="L50" class="LineNr"> 50 </span><span class="Normal">case</span> ABANDON: <span class="Delimiter">{</span>
<span id="L51" class="LineNr"> 51 </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 < <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span><a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L52" class="LineNr"> 52 </span> reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> ingredient = <a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L53" class="LineNr"> 53 </span> <a href='035lookup.cc.html#L66'>canonize</a><span class="Delimiter">(</span>ingredient<span class="Delimiter">);</span>
<span id="L54" class="LineNr"> 54 </span> <a href='036abandon.cc.html#L63'>abandon</a><span class="Delimiter">(</span><a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> ingredient<span class="Delimiter">.</span>value+<span class="Comment">/*</span><span class="Comment">skip alloc id</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">),</span> <a href='036abandon.cc.html#L75'>payload_size</a><span class="Delimiter">(</span>ingredient<span class="Delimiter">));</span>
<span id="L55" class="LineNr"> 55 </span><span class="CommentedCode">//? cerr << "clear after abandon: " << ingredient.value << '\n';</span>
<span id="L56" class="LineNr"> 56 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Comment">/*</span><span class="Comment">alloc id</span><span class="Comment">*/</span>ingredient<span class="Delimiter">.</span>value<span class="Delimiter">,</span> <span class="Comment">/*</span><span class="Comment">invalid</span><span class="Comment">*/</span>-<span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L57" class="LineNr"> 57 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Comment">/*</span><span class="Comment"><a href='043space.cc.html#L101'>address</a></span><span class="Comment">*/</span>ingredient<span class="Delimiter">.</span>value+<span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L58" class="LineNr"> 58 </span> <span class="Delimiter">}</span>
<span id="L59" class="LineNr"> 59 </span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L60" class="LineNr"> 60 </span><span class="Delimiter">}</span>
<span id="L61" class="LineNr"> 61 </span>
<span id="L62" class="LineNr"> 62 </span><span class="Delimiter">:(code)</span>
<span id="L63" class="LineNr"> 63 </span><span class="Normal">void</span> <a href='036abandon.cc.html#L63'>abandon</a><span class="Delimiter">(</span><span class="Normal">int</span> <a href='043space.cc.html#L101'>address</a><span class="Delimiter">,</span> <span class="Normal">int</span> <a href='036abandon.cc.html#L75'>payload_size</a><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L64" class="LineNr"> 64 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <a href='043space.cc.html#L101'>address</a><span class="Delimiter">,</span> <span class="Comment">/*</span><span class="Comment">invalid alloc-id</span><span class="Comment">*/</span>-<span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L65" class="LineNr"> 65 </span><span class="CommentedCode">//? cerr << "abandon: " << address << '\n';</span>
<span id="L66" class="LineNr"> 66 </span> <span class="Comment">// clear rest of payload</span>
<span id="L67" class="LineNr"> 67 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> curr = address+<span class="Constant">1</span><span class="Delimiter">;</span> curr < address+payload_size<span class="Delimiter">;</span> ++curr<span class="Delimiter">)</span>
<span id="L68" class="LineNr"> 68 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L69" class="LineNr"> 69 </span> <span class="Comment">// append existing free list to address</span>
<span id="L70" class="LineNr"> 70 </span> <a href='003trace.cc.html#L190'>trace</a><span class="Delimiter">(</span><span class="Constant">"abandon"</span><span class="Delimiter">)</span> << <span class="Constant">"saving "</span> << <a href='043space.cc.html#L101'>address</a> << <span class="Constant">" in free-list of size "</span> << <a href='036abandon.cc.html#L75'>payload_size</a> << <a href='003trace.cc.html#L226'>end</a><span class="Delimiter">();</span>
<span id="L71" class="LineNr"> 71 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> address+<span class="Comment">/*</span><span class="Comment">skip invalid alloc-id</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">,</span> <a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>free_list<span class="Delimiter">,</span> <a href='036abandon.cc.html#L75'>payload_size</a><span class="Delimiter">));</span>
<span id="L72" class="LineNr"> 72 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>free_list<span class="Delimiter">,</span> <a href='036abandon.cc.html#L75'>payload_size</a><span class="Delimiter">,</span> <a href='043space.cc.html#L101'>address</a><span class="Delimiter">);</span>
<span id="L73" class="LineNr"> 73 </span><span class="Delimiter">}</span>
<span id="L74" class="LineNr"> 74 </span>
<span id="L75" class="LineNr"> 75 </span><span class="Normal">int</span> <a href='036abandon.cc.html#L75'>payload_size</a><span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L76" class="LineNr"> 76 </span> x<span class="Delimiter">.</span>properties<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>pair<string<span class="Delimiter">,</span> string_tree*><span class="Delimiter">(</span><span class="Constant">"lookup"</span><span class="Delimiter">,</span> <span class="Constant">NULL</span><span class="Delimiter">));</span>
<span id="L77" class="LineNr"> 77 </span> <a href='035lookup.cc.html#L88'>lookup_memory_core</a><span class="Delimiter">(</span>x<span class="Delimiter">,</span> <span class="Comment">/*</span><span class="Comment">check_for_null</span><span class="Comment">*/</span><span class="Constant">false</span><span class="Delimiter">);</span>
<span id="L78" class="LineNr"> 78 </span> <span class="Identifier">return</span> size_of<span class="Delimiter">(</span>x<span class="Delimiter">)</span>+<span class="Comment">/*</span><span class="Comment">alloc id</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span>
<span id="L79" class="LineNr"> 79 </span><span class="Delimiter">}</span>
<span id="L80" class="LineNr"> 80 </span>
<span id="L81" class="LineNr"> 81 </span><span class="Delimiter">:(after "Allocate Special-cases")</span>
<span id="L82" class="LineNr"> 82 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>free_list<span class="Delimiter">,</span> size<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L83" class="LineNr"> 83 </span> <a href='003trace.cc.html#L190'>trace</a><span class="Delimiter">(</span><span class="Constant">"abandon"</span><span class="Delimiter">)</span> << <span class="Constant">"picking up space from free-list of size "</span> << size << <a href='003trace.cc.html#L226'>end</a><span class="Delimiter">();</span>
<span id="L84" class="LineNr"> 84 </span> <span class="Normal">int</span> result = <a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>free_list<span class="Delimiter">,</span> size<span class="Delimiter">);</span>
<span id="L85" class="LineNr"> 85 </span> <a href='003trace.cc.html#L190'>trace</a><span class="Delimiter">(</span><span class="Constant">"mem"</span><span class="Delimiter">)</span> << <span class="Constant">"new alloc from free list: "</span> << result << <a href='003trace.cc.html#L226'>end</a><span class="Delimiter">();</span>
<span id="L86" class="LineNr"> 86 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>free_list<span class="Delimiter">,</span> size<span class="Delimiter">,</span> <a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> result+<span class="Comment">/*</span><span class="Comment">skip alloc id</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">));</span>
<span id="L87" class="LineNr"> 87 </span> <span class="Comment">// clear 'deleted' tag</span>
<span id="L88" class="LineNr"> 88 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> result<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L89" class="LineNr"> 89 </span> <span class="Comment">// clear next pointer</span>
<span id="L90" class="LineNr"> 90 </span> <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> result+<span class="Comment">/*</span><span class="Comment">skip alloc id</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L91" class="LineNr"> 91 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> curr = result<span class="Delimiter">;</span> curr < result+size<span class="Delimiter">;</span> ++curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L92" class="LineNr"> 92 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">)</span> != <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L93" class="LineNr"> 93 </span> <a href='003trace.cc.html#L197'>raise</a> << <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> << <span class="Constant">"memory in free list was not zeroed out: "</span> << curr << <span class="Constant">'/'</span> << result << <span class="Constant">"; somebody wrote to us after free!!!</span><span class="cSpecial">\n</span><span class="Constant">"</span> << <a href='003trace.cc.html#L226'>end</a><span class="Delimiter">();</span>
<span id="L94" class="LineNr"> 94 </span> <span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// always fatal</span>
<span id="L95" class="LineNr"> 95 </span> <span class="Delimiter">}</span>
<span id="L96" class="LineNr"> 96 </span> <span class="Delimiter">}</span>
<span id="L97" class="LineNr"> 97 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L98" class="LineNr"> 98 </span><span class="Delimiter">}</span>
<span id="L99" class="LineNr"> 99 </span>
<span id="L100" class="LineNr">100 </span><span class="Delimiter">:(scenario new_differing_size_no_reclaim)</span>
<span id="L101" class="LineNr">101 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L102" class="LineNr">102 </span> <span class="Constant">1</span>:&:num<span class="Special"> <- </span><span class="Normal">new</span> <span class="Constant">number:type</span>
<span id="L103" class="LineNr">103 </span> <span class="Constant">2</span>:num<span class="Special"> <- </span>deaddress <span class="Constant">1</span>:&:num
<span id="L104" class="LineNr">104 </span> <a href='036abandon.cc.html#L63'>abandon</a> <span class="Constant">1</span>:&:num
<span id="L105" class="LineNr">105 </span> <span class="Constant">3</span>:&:@:num<span class="Special"> <- </span><span class="Normal">new</span> <span class="Constant">number:type</span><span class="Delimiter">,</span> <span class="Constant">2</span> <span class="Comment"># different size</span>
<span id="L106" class="LineNr">106 </span> <span class="Constant">4</span>:num<span class="Special"> <- </span>deaddress <span class="Constant">3</span>:&:@:num
<span id="L107" class="LineNr">107 </span> <span class="Constant">5</span>:<span class="Normal">bool</span><span class="Special"> <- </span>equal <span class="Constant">2</span>:num<span class="Delimiter">,</span> <span class="Constant">4</span>:num
<span id="L108" class="LineNr">108 </span>]
<span id="L109" class="LineNr">109 </span><span class="Comment"># no reuse</span>
<span id="L110" class="LineNr">110 </span><span class="traceContains">+mem: storing 0 in location 5</span>
<span id="L111" class="LineNr">111 </span>
<span id="L112" class="LineNr">112 </span><span class="Delimiter">:(scenario new_reclaim_array)</span>
<span id="L113" class="LineNr">113 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L114" class="LineNr">114 </span> <span class="Constant">10</span>:&:@:num<span class="Special"> <- </span><span class="Normal">new</span> <span class="Constant">number:type</span><span class="Delimiter">,</span> <span class="Constant">2</span>
<span id="L115" class="LineNr">115 </span> <span class="Constant">20</span>:num<span class="Special"> <- </span>deaddress <span class="Constant">10</span>:&:@:num
<span id="L116" class="LineNr">116 </span> <a href='036abandon.cc.html#L63'>abandon</a> <span class="Constant">10</span>:&:@:num
<span id="L117" class="LineNr">117 </span> <span class="Constant">30</span>:&:@:num<span class="Special"> <- </span><span class="Normal">new</span> <span class="Constant">number:type</span><span class="Delimiter">,</span> <span class="Constant">2</span> <span class="Comment"># same size</span>
<span id="L118" class="LineNr">118 </span> <span class="Constant">40</span>:num<span class="Special"> <- </span>deaddress <span class="Constant">30</span>:&:@:num
<span id="L119" class="LineNr">119 </span> <span class="Constant">50</span>:<span class="Normal">bool</span><span class="Special"> <- </span>equal <span class="Constant">20</span>:num<span class="Delimiter">,</span> <span class="Constant">40</span>:num
<span id="L120" class="LineNr">120 </span>]
<span id="L121" class="LineNr">121 </span><span class="Comment"># both calls to new returned identical addresses</span>
<span id="L122" class="LineNr">122 </span><span class="traceContains">+mem: storing 1 in location 50</span>
<span id="L123" class="LineNr">123 </span>
<span id="L124" class="LineNr">124 </span><span class="Delimiter">:(scenario lookup_of_abandoned_address_raises_error)</span>
<span id="L125" class="LineNr">125 </span><span class="Special">% Hide_errors = true;</span>
<span id="L126" class="LineNr">126 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L127" class="LineNr">127 </span> <span class="Constant">1</span>:&:num<span class="Special"> <- </span><span class="Normal">new</span> <span class="Constant">num:type</span>
<span id="L128" class="LineNr">128 </span> <span class="Constant">3</span>:&:num<span class="Special"> <- </span>copy <span class="Constant">1</span>:&:num
<span id="L129" class="LineNr">129 </span> <a href='036abandon.cc.html#L63'>abandon</a> <span class="Constant">1</span>:&:num
<span id="L130" class="LineNr">130 </span> <span class="Constant">5</span>:num/<span class="Special">raw <- </span>copy *<span class="Constant">3</span>:&:num
<span id="L131" class="LineNr">131 </span>]
<span id="L132" class="LineNr">132 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: <a href='043space.cc.html#L101'>address</a> is already abandoned in '5:num/raw <- copy *3:&:num'</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|