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<h3>
Raymond Toy pushed to branch master
at <a href="https://gitlab.common-lisp.net/cmucl/cmucl">cmucl / cmucl</a>
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<h4>
Commits:
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<strong><a href="https://gitlab.common-lisp.net/cmucl/cmucl/-/commit/cb529aaf25814d19d30207929c359d5f6cac040d">cb529aaf</a></strong>
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<span>by Raymond Toy</span>
<i>at 2021-05-08T22:12:59+00:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Address #89: Clean up page flags
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<strong><a href="https://gitlab.common-lisp.net/cmucl/cmucl/-/commit/2589cd0c29215133eac897d10f6f880d76bc1b75">2589cd0c</a></strong>
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<span>by Raymond Toy</span>
<i>at 2021-05-08T22:13:00+00:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Merge branch 'issue-89-update-page-flags' into 'master'
Address #89: Clean up page flags
See merge request cmucl/cmucl!61</pre>
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<h4>1 changed file:</h4>
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src/lisp/gencgc.h
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<h4>Changes:</h4>
<li id="8f572308b07bf60796fb8947f5c0e3fbcf4965b3">
<a href="https://gitlab.common-lisp.net/cmucl/cmucl/-/compare/545c960df893ce176fc899823188060f2814d350...2589cd0c29215133eac897d10f6f880d76bc1b75#8f572308b07bf60796fb8947f5c0e3fbcf4965b3"><strong>src/lisp/gencgc.h</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -35,13 +35,39 @@ int gc_write_barrier(void *);</td>
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<pre style="margin: 0;"> <span id="LC35" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_NEEDS_ZEROING_MARKER 0xdead0000</span></span>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC38" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/*</span></span>
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<pre style="margin: 0;">+<span id="LC39" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * The various fields packed into the struct page flags member.</span></span>
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;">+<span id="LC42" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/*</span></span>
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<pre style="margin: 0;">+<span id="LC43" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * The generation that this page belongs to. This should be valid for</span></span>
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<pre style="margin: 0;">+<span id="LC44" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * all pages that may have objects allocated, even current allocation</span></span>
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<pre style="margin: 0;">+<span id="LC45" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * region pages - this allows the space of an object to be easily</span></span>
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<pre style="margin: 0;">+<span id="LC46" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * determined.</span></span>
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<pre style="margin: 0;">+<span id="LC47" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;">+<span id="LC49" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_GENERATION_MASK 0x0000000f</span></span>
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<pre style="margin: 0;">+<span id="LC50" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_GENERATION(page) \</span></span>
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<pre style="margin: 0;">+<span id="LC51" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;"> (page_table[page].flags & PAGE_GENERATION_MASK)</span></span>
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<pre style="margin: 0;">+<span id="LC53" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_FLAGS(page, mask) (page_table[page].flags & (mask))</span></span>
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<pre style="margin: 0;">+<span id="LC54" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_FLAGS_UPDATE(page, mmask, mflags) \</span></span>
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<pre style="margin: 0;">+<span id="LC55" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;"> (page_table[page].flags = (page_table[page].flags & ~(mmask)) | (mflags))</span></span>
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<pre style="margin: 0;">+<span id="LC58" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/*</span></span>
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<pre style="margin: 0;">+<span id="LC59" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * After the generation, we have a set of bits. This defines the</span></span>
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<pre style="margin: 0;">+<span id="LC60" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * location of the first of the bit fields.</span></span>
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<pre style="margin: 0;">+<span id="LC61" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;">+<span id="LC62" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_BASE_BIT_SHIFT 4</span></span>
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<pre style="margin: 0;">+<span id="LC63" class="line" lang="c"></span>
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<pre style="margin: 0;"> <span id="LC64" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/*</span></span>
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<pre style="margin: 0;"> <span id="LC65" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Set when the page is write protected. If it is writen into it is</span></span>
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<pre style="margin: 0;"> <span id="LC66" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * made writable and this flag is cleared. This should always reflect</span></span>
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<pre style="margin: 0;"> <span id="LC67" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * the actual write_protect status of a page.</span></span>
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<pre style="margin: 0;"> <span id="LC68" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;"> <span id="LC69" class="line" lang="c"></span>
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<pre style="margin: 0;">-<span id="LC44" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_WRITE_PROTECTED_MASK <span class="idiff left right">0x00000010</span></span></span>
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_WRITE_PROTECTED_MASK <span class="idiff left right">(1 << PAGE_BASE_BIT_SHIFT)</span></span></span>
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<pre style="margin: 0;"> <span id="LC71" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_WRITE_PROTECTED(page) \</span></span>
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<pre style="margin: 0;"> <span id="LC72" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;"> (page_table[page].flags & PAGE_WRITE_PROTECTED_MASK)</span></span>
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<pre style="margin: 0;"> <span id="LC73" class="line" lang="c"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -51,14 +77,14 @@ int gc_write_barrier(void *);</td>
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<pre style="margin: 0;"> <span id="LC77" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * the bytes_used must be 0.</span></span>
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<pre style="margin: 0;"> <span id="LC78" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;"> <span id="LC79" class="line" lang="c"></span>
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<pre style="margin: 0;">-<span id="LC54" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_ALLOCATED_MASK <span class="idiff left right">0x00000040</span></span></span>
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<pre style="margin: 0;">+<span id="LC80" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_ALLOCATED_MASK <span class="idiff left right">(1 << (PAGE_BASE_BIT_SHIFT + 1))</span></span></span>
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<pre style="margin: 0;"> <span id="LC81" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_ALLOCATED(page) (page_table[page].flags & PAGE_ALLOCATED_MASK)</span></span>
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<pre style="margin: 0;"> <span id="LC82" class="line" lang="c"></span>
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<pre style="margin: 0;"> <span id="LC83" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/*</span></span>
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<pre style="margin: 0;"> <span id="LC84" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Unboxed region flag: 1 for unboxed objects, 0 for boxed objects.</span></span>
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<pre style="margin: 0;"> <span id="LC85" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;">-<span id="LC60" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_UNBOXED_<span class="idiff left right">MASK 0x00000080</span></span></span>
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<pre style="margin: 0;">-<span id="LC61" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_UNBOXED_SHIFT<span class="idiff left right"> 7</span></span></span>
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<pre style="margin: 0;">+<span id="LC86" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_UNBOXED_<span class="idiff left right">SHIFT (PAGE_BASE_BIT_SHIFT + 2)</span></span></span>
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<pre style="margin: 0;">+<span id="LC87" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define <span class="idiff left">PAGE_UNBOXED_MASK (1 << </span>PAGE_UNBOXED_SHIFT<span class="idiff right">)</span></span></span>
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<pre style="margin: 0;"> <span id="LC88" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_UNBOXED(page) (page_table[page].flags & PAGE_UNBOXED_MASK)</span></span>
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<pre style="margin: 0;"> <span id="LC89" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_UNBOXED_VAL(page) (PAGE_UNBOXED(page) >> PAGE_UNBOXED_SHIFT)</span></span>
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<pre style="margin: 0;"> <span id="LC90" class="line" lang="c"></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="93" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -67,7 +93,7 @@ int gc_write_barrier(void *);</td>
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<pre style="margin: 0;"> <span id="LC93" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * set. It's only valid during a GC for allocated pages.</span></span>
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<pre style="margin: 0;"> <span id="LC94" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;"> <span id="LC95" class="line" lang="c"></span>
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<pre style="margin: 0;">-<span id="LC70" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_DONT_MOVE_MASK <span class="idiff left right">0x00000100</span></span></span>
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<pre style="margin: 0;">+<span id="LC96" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_DONT_MOVE_MASK <span class="idiff left right">(1 << (PAGE_BASE_BIT_SHIFT + 3))</span></span></span>
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<pre style="margin: 0;"> <span id="LC97" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_DONT_MOVE(page) \</span></span>
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72
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<pre style="margin: 0;"> <span id="LC98" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;"> (page_table[page].flags & PAGE_DONT_MOVE_MASK)</span></span>
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<pre style="margin: 0;"> <span id="LC99" class="line" lang="c"></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="103" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -77,28 +103,13 @@ int gc_write_barrier(void *);</td>
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<pre style="margin: 0;"> <span id="LC103" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * valid when the page is allocated.</span></span>
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<pre style="margin: 0;"> <span id="LC104" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;"> <span id="LC105" class="line" lang="c"></span>
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<pre style="margin: 0;">-<span id="LC80" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_LARGE_OBJECT_<span class="idiff left right">MASK 0x00000200</span></span></span>
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<pre style="margin: 0;">-<span id="LC81" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_LARGE_OBJECT_SHIFT<span class="idiff left right"> 9</span></span></span>
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<pre style="margin: 0;">+<span id="LC106" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_LARGE_OBJECT_<span class="idiff left right">SHIFT (PAGE_BASE_BIT_SHIFT + 4)</span></span></span>
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<pre style="margin: 0;">+<span id="LC107" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define <span class="idiff left">PAGE_LARGE_OBJECT_MASK (1 << </span>PAGE_LARGE_OBJECT_SHIFT<span class="idiff right">)</span></span></span>
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<pre style="margin: 0;"> <span id="LC108" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_LARGE_OBJECT(page) \</span></span>
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109
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<pre style="margin: 0;"> <span id="LC109" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;"> (page_table[page].flags & PAGE_LARGE_OBJECT_MASK)</span></span>
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110
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<pre style="margin: 0;"> <span id="LC110" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_LARGE_OBJECT_VAL(page) \</span></span>
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111
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<pre style="margin: 0;"> <span id="LC111" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;"> (PAGE_LARGE_OBJECT(page) >> PAGE_LARGE_OBJECT_SHIFT)</span></span>
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112
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<pre style="margin: 0;"> <span id="LC112" class="line" lang="c"></span>
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<pre style="margin: 0;">-<span id="LC87" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/*</span></span>
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<pre style="margin: 0;">-<span id="LC88" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * The generation that this page belongs to. This should be valid for</span></span>
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<pre style="margin: 0;">-<span id="LC89" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * all pages that may have objects allocated, even current allocation</span></span>
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<pre style="margin: 0;">-<span id="LC90" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * region pages - this allows the space of an object to be easily</span></span>
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<pre style="margin: 0;">-<span id="LC91" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * determined.</span></span>
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<pre style="margin: 0;">-<span id="LC92" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;">-<span id="LC93" class="line" lang="c"></span>
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<pre style="margin: 0;">-<span id="LC94" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_GENERATION_MASK 0x0000000f</span></span>
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<pre style="margin: 0;">-<span id="LC95" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_GENERATION(page) \</span></span>
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<pre style="margin: 0;">-<span id="LC96" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;"> (page_table[page].flags & PAGE_GENERATION_MASK)</span></span>
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<pre style="margin: 0;">-<span id="LC97" class="line" lang="c"></span>
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<pre style="margin: 0;">-<span id="LC98" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_FLAGS(page, mask) (page_table[page].flags & (mask))</span></span>
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<pre style="margin: 0;">-<span id="LC99" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define PAGE_FLAGS_UPDATE(page, mmask, mflags) \</span></span>
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<pre style="margin: 0;">-<span id="LC100" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;"> (page_table[page].flags = (page_table[page].flags & ~(mmask)) | (mflags))</span></span>
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<pre style="margin: 0;">-<span id="LC101" class="line" lang="c"></span>
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<pre style="margin: 0;"> <span id="LC113" class="line" lang="c"><span class="k" style="font-weight: 600;">struct</span> <span class="n" style="color: #333;">page</span> <span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC114" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/*</span></span>
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<pre style="margin: 0;"> <span id="LC115" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Page flags.</span></span>
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