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Library: verify the simplest possible allocation

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...by inspecting the raw memory locations -- looks good thus far...
This commit is contained in:
Fischlurch 2024-05-24 18:05:21 +02:00
parent e8d9dcd9bf
commit 037a5f2dd0
2 changed files with 57 additions and 11 deletions
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41
tests/library/allocation-cluster-test.cpp
View file

@ -205,18 +205,47 @@ namespace test {
CHECK (0 == clu.numExtents());
CHECK (0 == clu.numBytes());
auto i1 = clu.create<uint16_t> (1 + uint16_t(rand()));
SHOW_EXPR(clu.storage_.rest);
SHOW_EXPR(size_t(clu.storage_.pos));
CHECK (nullptr == clu.storage_.pos);
CHECK ( 0 == clu.storage_.rest);
auto& i1 = clu.create<uint16_t> (1 + uint16_t(rand()));
CHECK (i1 > 0);
CHECK (1 == clu.numExtents());
SHOW_EXPR(clu.numBytes())
CHECK (2 == clu.numBytes());
SHOW_EXPR(clu.storage_.rest);
SHOW_EXPR(clu.storage_.pos);
SHOW_EXPR(size_t(clu.storage_.pos));
CHECK (clu.storage_.pos != nullptr);
CHECK (clu.storage_.rest == BLOCKSIZ - (2*sizeof(void*) + sizeof(uint16_t)));
byte* blk = static_cast<std::byte*>(clu.storage_.pos);
SHOW_EXPR(blk);
CHECK (blk);
SHOW_EXPR(size_t(blk));
blk += clu.storage_.rest - BLOCKSIZ;
SHOW_EXPR(blk);
SHOW_EXPR(blk[0]);
SHOW_EXPR(size_t(blk));
SHOW_EXPR((size_t*)blk);
CHECK(size_t(blk) < size_t(clu.storage_.pos));
auto currBlock = [&]{
byte* blk = static_cast<std::byte*>(clu.storage_.pos);
blk += clu.storage_.rest - BLOCKSIZ;
return blk;
};
auto slot = [&](size_t i)
{
size_t* slot = reinterpret_cast<size_t*> (currBlock());
return slot[i];
};
auto posOffset = [&]{
return size_t(clu.storage_.pos) - size_t(currBlock());
};
SHOW_EXPR(size_t(currBlock()))
SHOW_EXPR(slot(0))
SHOW_EXPR(slot(1))
SHOW_EXPR(size_t(clu.storage_.pos) - size_t(currBlock()))
CHECK (posOffset() == 2 * sizeof(void*) + sizeof(uint16_t));
CHECK (slot(0) == 0);
}
CHECK (0==checksum);
}

27
wiki/thinkPad.ichthyo.mm
View file

@ -81698,7 +81698,18 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
<node COLOR="#338800" CREATED="1715820259913" ID="ID_13842300" MODIFIED="1716563038609" TEXT="Check f&#xfc;r zu gro&#xdf;e Objekte">
<icon BUILTIN="button_ok"/>
</node>
<node COLOR="#338800" CREATED="1716563047722" ID="ID_848423419" MODIFIED="1716563055539" TEXT="Storage-Diagnose">
<node COLOR="#338800" CREATED="1716563047722" ID="ID_848423419" MODIFIED="1716566615378" TEXT="Storage-Diagnose">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
mu&#223; hier leider eine schecklicke low-level-Trickserei machen; das ist die Konsequenz der Entscheidung, mit dem absolut minimalen Storage-Overhead zu arbeiten, und au&#223;erdem mu&#223; ich auch noch das Non-Copyable <i>aushebeln...</i>
</p>
</body>
</html>
</richcontent>
<icon BUILTIN="button_ok"/>
</node>
<node COLOR="#338800" CREATED="1715820289221" ID="ID_1541316374" MODIFIED="1716130701433" TEXT="&#xdc;berlauf: neuen Block belegen">
@ -81898,11 +81909,17 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
<arrowlink COLOR="#4173be" DESTINATION="ID_1783945506" ENDARROW="Default" ENDINCLINATION="204;17;" ID="Arrow_ID_1547348126" STARTARROW="None" STARTINCLINATION="292;-22;"/>
<icon BUILTIN="flag-yellow"/>
</node>
<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1716552160019" ID="ID_146077309" MODIFIED="1716552282949" TEXT="die Mechanik &#xfc;berhaupt erst mal zum Laufen bekommen">
<icon BUILTIN="pencil"/>
<node COLOR="#338800" CREATED="1716552160019" ID="ID_146077309" MODIFIED="1716566510566" TEXT="die Mechanik &#xfc;berhaupt erst mal zum Laufen bekommen">
<icon BUILTIN="button_ok"/>
</node>
<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1716552180480" ID="ID_1382140920" MODIFIED="1716566512774" TEXT="eine Allokation im bestehenden Extent">
<icon BUILTIN="pencil"/>
<node COLOR="#338800" CREATED="1716566627518" ID="ID_874153150" MODIFIED="1716566633607" TEXT="sieht erst mal gut aus">
<icon BUILTIN="button_ok"/>
</node>
<node COLOR="#338800" CREATED="1716566635117" ID="ID_674171131" MODIFIED="1716566656562" TEXT="lokale abk&#xfc;rzungs-&#x3bb; im Test">
<icon BUILTIN="button_ok"/>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1716552180480" ID="ID_1382140920" MODIFIED="1716552189738" TEXT="eine Allokation im bestehenden Extent">
<icon BUILTIN="flag-yellow"/>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1716552190584" ID="ID_1042988047" MODIFIED="1716552206544" TEXT="einen &#xdc;berlauf provozieren">
<icon BUILTIN="flag-yellow"/>