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포럼: 도움 (Thread #25445)
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CRE_MPLの不具合？ (2010-02-17 08:34 by easygo #48643)

V850ESで利用させて頂いております。

CRE_MPLにて生成した可変長メモリプールに対してpget_mplを実行すると取得に失敗します。
どうやらコンフィグレータ(hos4cfg)が生成するコード(kernel_cfg.c)に誤りがあるようです。

以下が該当箇所です

/* fixed size memory-pool area */
static VP kernel_mpl1_heap[(((2048) + sizeof(VP) - 1) / sizeof(VP))];

/* variable size memory-pool control block for rom area */
const T_KERNEL_MPLCB_ROM kernel_mplcb_rom[1] =
{
{(ATR)(TA_TFIFO), (SIZE)sizeof(kernel_mpl1_heap[0]), (VP)kernel_mpl1_heap},
};

ヒープサイズの定義が(SIZE)sizeof(kernel_mpl1_heap[0])となってしまっており
ポインタのサイズ(4byte)がヒープサイズとして定義されてしまいます。

正しくは、(SIZE)sizeof(kernel_mpl1_heap)ではないでしょうか？
コンフィグレータを修正することで解決しておりますが、念のためご連絡いたします。

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RE: CRE_MPLの不具合？ (2010-02-18 01:01 by m-arai #48679)

CRE_MPFにも同じ病があるようですね。
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RE: CRE_MPLの不具合？ (2010-02-18 09:12 by hamayan #48681)

同じジェネレータだからだとは思いますが、固定長メモリプールでも発生していますね。
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RE: CRE_MPLの不具合？ (2010-02-18 09:31 by hamayan #48682)

取り敢えずconfigの中のcrempl.cppの186行目辺りの
"(SIZE)sizeof(kernel_mpl%d_heap[0]), (VP)kernel_mpl%d_heap},\n",
を
"(SIZE)sizeof(kernel_mpl%d_heap), (VP)kernel_mpl%d_heap},\n",
で再コンパイルしてみては如何でしょうか。

同様に固定長メモリプールではcrempf.cppの190行目辺りの
"(SIZE)sizeof(kernel_mpf%d_heap[0]), (VP)kernel_mpf%d_heap},\n",
を
"(SIZE)sizeof(kernel_mpf%d_heap), (VP)kernel_mpf%d_heap},\n",
ですか。

問題を見つけていただいて感謝しています。
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RE: CRE_MPLの不具合？ (2010-02-18 09:44 by hamayan #48683)

ごめんなさい、固定長メモリプールの場合はこれに当たらないかも。
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RE: CRE_MPLの不具合？ (2010-02-18 09:56 by hamayan #48685)

m-araiさん、直してもらってすいません。
固定長メモリプールはメモリブロックのサイズを指すので元が正しい様です。

本当にすいません。
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RE: CRE_MPLの不具合？ (2010-02-18 10:18 by m-arai #48686)

失礼しました。最初にデムパを飛ばしたのは私です。
固定長はメモリブロック数、ブロックサイズなので、
元のままで良いのでした。

http://sourceforge.jp/cvs/view/hos/hos/hos-v4/config/crempf.cpp?r1=1.10&r2=1.11
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RE: CRE_MPLの不具合？ (2010-02-21 18:10 by ryuz #48803)

反応遅れてすみません。Ryuz＠バグの犯人です。

バグレポ並びに、修正有難うございました。 ＞ 皆様

MPF先に作って、それをベースにMPL作成して、しくじっていたようです。
私自身あまりMPL使う機会が無くて長らく埋まっていたようですみません。

組込みの特性上、以前はMPLはあまり好まれない風潮がありましたが、最近はリソースに余裕があるケースも増えてきましたのでもっとリッチなヒープアルゴリズムを検討しても良いのかもしれませんね。
可変長という特性上、リアルタイム保証しにくいのが困ったものです。
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