私は非常に複雑なソフトウェアを書いています (今までに 10 年以上)。
以下からソースをチェックアウトすることをお勧めします: http://savannah.nongnu.org/svn/?group=cybop
INSTALL ファイルの指示に従ってコンパイルおよび実行します。
このコマンド ラインを使用して memcheck を実行しました: christian@deneb:/home/project/cybop/examples$ valgrind --tool=memcheck --log-file=memcheck.log --leak-check=full --track-origins =はい ../src/controller/cyboi exit/run.cybol
memcheck の出力は次のとおりです。
==28641== Memcheck, a memory error detector
==28641== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==28641== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==28641== Command: ../src/controller/cyboi exit/run.cybol
==28641== Parent PID: 22974
==28641==
==28641==
==28641== HEAP SUMMARY:
==28641== in use at exit: 5,174 bytes in 407 blocks
==28641== total heap usage: 636 allocs, 229 frees, 45,749 bytes allocated
==28641==
==28641== 442 (72 direct, 370 indirect) bytes in 1 blocks are definitely lost in loss record 406 of 407
==28641== at 0x4C28BED: malloc (vg_replace_malloc.c:263)
==28641== by 0x401EC0: allocate_array (array_allocator.c:116)
==28641== by 0x40719C: allocate_part (part_allocator.c:50)
==28641== by 0x42EE3E: deserialise_cybol_part_element_content (content_element_part_cybol_deserialiser.c:262)
==28641== by 0x43098E: deserialise_cybol_part_element (element_part_cybol_deserialiser.c:74)
==28641== by 0x4309FD: deserialise_cybol_part (part_cybol_deserialiser.c:79)
==28641== by 0x42F230: deserialise_cybol_part_element_content (content_element_part_cybol_deserialiser.c:331)
==28641== by 0x43098E: deserialise_cybol_part_element (element_part_cybol_deserialiser.c:74)
==28641== by 0x4309FD: deserialise_cybol_part (part_cybol_deserialiser.c:79)
==28641== by 0x42F230: deserialise_cybol_part_element_content (content_element_part_cybol_deserialiser.c:331)
==28641== by 0x42F4CB: deserialise_cybol (cybol_deserialiser.c:196)
==28641== by 0x42FD48: deserialise (deserialiser.c:229)
==28641==
==28641== 4,732 (72 direct, 4,660 indirect) bytes in 1 blocks are definitely lost in loss record 407 of 407
==28641== at 0x4C28BED: malloc (vg_replace_malloc.c:263)
==28641== by 0x401EC0: allocate_array (array_allocator.c:116)
==28641== by 0x40719C: allocate_part (part_allocator.c:50)
==28641== by 0x41F6EA: deserialise_xml_element (element_xml_deserialiser.c:61)
==28641== by 0x41FA65: select_xml_element_content (element_content_xml_selector.c:144)
==28641== by 0x41FAF3: deserialise_xml_element_content (element_content_xml_deserialiser.c:73)
==28641== by 0x41FBA9: deserialise_xml (xml_deserialiser.c:66)
==28641== by 0x42F3E1: deserialise_cybol (cybol_deserialiser.c:178)
==28641== by 0x42FD48: deserialise (deserialiser.c:229)
==28641== by 0x430088: receive_file (file_receiver.c:106)
==28641== by 0x433D2F: initialise (initialiser.c:88)
==28641== by 0x4344C3: manage (manager.c:320)
==28641==
==28641== LEAK SUMMARY:
==28641== definitely lost: 144 bytes in 2 blocks
==28641== indirectly lost: 5,030 bytes in 405 blocks
==28641== possibly lost: 0 bytes in 0 blocks
==28641== still reachable: 0 bytes in 0 blocks
==28641== suppressed: 0 bytes in 0 blocks
==28641==
==28641== For counts of detected and suppressed errors, rerun with: -v
==28641== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 6 from 6)
「確実に失われた」というエラーは、すべてが適切に解放されたわけではないと主張しています。Sisyphus の仕事をして、私のすべてのソース コードを検索するように頼んでいるわけではありません。基本的に、すべての関数が依存する「malloc」は 1 つだけです。データ構造 (トップダウン) は次のとおりです。パーツ - アイテム - 配列 - 値。つまり、パーツは 9 つのアイテムを参照し、アイテムは 3 つの配列を参照します。
自作のビルトイン ガベージ コレクションによると、すべて問題ありませんでした。見てみたい人もいるのではないでしょうか?どんなヒントでも大歓迎です。次のファイル「array_allocator.c」のソース コード スニペット:
void allocate_array(void* p0, void* p1, void* p2) {
if (p0 != *NULL_POINTER_STATE_CYBOI_MODEL) {
void** a = (void**) p0;
// The memory area.
int ma = *NUMBER_0_INTEGER_STATE_CYBOI_MODEL;
// Determine type (type) size.
determine_size((void*) &ma, p2);
// Calculate memory area.
calculate_integer_multiply((void*) &ma, p1);
// The temporary size_t variable.
size_t tma = ma;
// CAUTION! In order to always get a correct memory address returned
// that may be used to store data, a potential zero size is changed
// to a minimum size of one here.
if (tma == *NUMBER_0_INTEGER_STATE_CYBOI_MODEL) {
tma = *NUMBER_1_INTEGER_STATE_CYBOI_MODEL;
} else if (tma < *NUMBER_0_INTEGER_STATE_CYBOI_MODEL) {
fwprintf(stdout, L"ERROR: Could not allocate array. The memory area to be allocated is negative: %i\n", *a);
tma = *NUMBER_1_INTEGER_STATE_CYBOI_MODEL;
}
*a = malloc(tma);
// Initialise array elements with null pointer.
//
// CAUTION! Initialising with zero values is essential, since
// cyboi frequently tests variables for null pointer values.
memset(*a, *NUMBER_0_INTEGER_STATE_CYBOI_MODEL, tma);
} else {
log_message_terminated((void*) ERROR_LEVEL_LOG_CYBOI_MODEL, (void*) L"Could not allocate array. The array is null.");
}
}