5429==通过0x8048848:main（main.c:18） 129: ==15429== 130:==15429==1个块中的508字节仍然可以在11个块中的丢失记录6中访问 131:==15429==at 0x402425F:calloc（vg\u replace\u malloc.c:467） 132:==15429==0x408113B:g_malloc0（in/lib/libglib-2.0.so.0.2400.1） 133:==15429==0x4096291:？？？（in/lib/libglib-2.0.so.0.2400.1） 134:==15429==0x409710C:g_slice_alloc（in/lib/libglib-2.0.so.0.2400.1） 135:==15429==by 0x40988A5:g_slist_append（in/lib/libglib-2.0.so.0.2400.1） 136:==15429==by 0x80488F0:xyn\u pl\u get\u文件（xyn playlist.c:41） 137:==15429==by 0x8048848:main（main.c:18） 138: ==15429== 139:==15429==10个块中的1200字节可能在11个块中的丢失记录7中丢失 140:==15429==at 0x4024106:memalign（vg_replace_malloc.c:581） 141:==15429==0x4024163:posix_memalign（vg_replace_malloc.c:709） 142:==15429==0x40969C1:？？？（in/lib/libglib-2.0.so.0.2400.1） 143:==15429==0x40971F6:g_slice_alloc（in/lib/libglib-2.0.so.0.2400.1） 144:==15429==by 0x40988A5:g_slist_append（in/lib/libglib-2.0.so.0.2400.1） 145:==15429==by 0x8048A0D:xyn\u pl\u get\u文件（xyn playlist.c:61） 146:==15429==by 0x8048848:main（main.c:18） 147: ==15429== 148:==15429==1个块中的2040字节仍然可以在11个块中的丢失记录8中访问 149:==15429==at 0x402425F:calloc（vg\u replace\u malloc.c:467） 150:==15429==0x408113B:g_malloc0（in/lib/libglib-2.0.so.0.2400.1） 151:==15429==0x40970AB:g_slice_alloc（in/lib/libglib-2.0.so.0.2400.1） 152:==15429==by 0x40988A5:g_slist_append（in/lib/libglib-2.0.so.0.2400.1） 153:==15429==by 0x80488F0:xyn\u pl\u get\u文件（xyn playlist.c:41） 154:==15429==by 0x8048848:main（main.c:18） 155: ==15429== 156:==15429==4320字节（36个块）可能在11个块中的丢失记录9中丢失 157:==15429==at 0x4024106:memalign（vg\u replace\u malloc.c:581） 158:==15429==0x4024163:posix_memalign（vg_replace_malloc.c:709） 159:==15429==0x40969C1:？？？（in/lib/libglib-2.0.so.0.2400.1） 160:==15429==0x4097222:g_slice_alloc（in/lib/libglib-2.0.so.0.2400.1） 161:==15429==by 0x40988A5:g_slist_append（in/lib/libglib-2.0.so.0.2400.1） 162:==15429==by 0x80489D2:xyn\u pl\u get\u文件（xyn playlist.c:58） 163:==15429==by 0x8048848:main（main.c:18） 164: ==15429== 165:==15429==56640字节（472个块中）可能在11个块中的丢失记录10中丢失 166:==15429==at 0x4024106:memalign（vg_replace_malloc.c:581） 167:==15429==0x4024163:posix_memalign（vg_replace_malloc.c:709） 168:==15429==0x40969C1:？？？（in/lib/libglib-2.0.so.0.2400.1） 169:==15429==0x4097222:g_slice_alloc（in/lib/libglib-2.0.so.0.2400.1） 170:==15429==by 0x40988A5:g_slist_append（in/lib/libglib-2.0.so.0.2400.1） 171:==15429==by 0x8048A0D:xyn_pl_get_文件（xyn playlist.c:61） 172:==15429==by 0x8048848:main（main.c:18） 173: ==15429== 174:==15429==6736块中的685118字节肯定会在丢失记录11（共11个）中丢失 175:==15429==at 0x4024F20:malloc（vg_替换_malloc.c:236） 176:==15429==0x4081243:g_malloc（in/lib/libglib-2.0.so.0.2400.1） 177:==15429==by0x409b85b:g_strconcat（in/lib/libglib-2.0.so.0.2400.1） 178:==15429==0x80489FE:xyn\u pl\u get\u文件（xyn playlist.c:62） 179:==15429==by 0x8048848:main（main.c:18） 180: ==15429== 181:==15429==泄漏汇总： 182:==15429==绝对丢失：6736块中685118字节 183:==15429==间接丢失：0块中的0字节 184:==15429==可能丢失：523个块中的62769字节 185:==15429==仍然可访问：4个块中的3564字节 186:==15429==抑制：0块中的0字节 187: ==15429== 188:==15429==对于检测到的和抑制的错误计数，请使用：-v重新运行 189:==15429==错误摘要：7个上下文中的7个错误（已抑制：8个中的17个） 190: ----------------------------------------------------------------------------------------------
我使用上述代码是为了创建一个包含某个目录中所有文件路径的列表。（在我的情况下，5429==通过0x8048848:main（main.c:18） 129: ==15429== 130:==15429==1个块中的508字节仍然可以在11个块中的丢失记录6中访问 131:==15429==at 0x402425F:calloc（vg\u replace\u malloc.c:467） 132:==15429==0x408113B:g_malloc0（in/lib/libglib-2.0.so.0.2400.1） 133:==15429==0x4096291:？？？（in/lib/libglib-2.0.so.0.2400.1） 134:==15429==0x409710C:g_slice_alloc（in/lib/libglib-2.0.so.0.2400.1） 135:==15429==by 0x40988A5:g_slist_append（in/lib/libglib-2.0.so.0.2400.1） 136:==15429==by 0x80488F0:xyn\u pl\u get\u文件（xyn playlist.c:41） 137:==15429==by 0x8048848:main（main.c:18） 138: ==15429== 139:==15429==10个块中的1200字节可能在11个块中的丢失记录7中丢失 140:==15429==at 0x4024106:memalign（vg_replace_malloc.c:581） 141:==15429==0x4024163:posix_memalign（vg_replace_malloc.c:709） 142:==15429==0x40969C1:？？？（in/lib/libglib-2.0.so.0.2400.1） 143:==15429==0x40971F6:g_slice_alloc（in/lib/libglib-2.0.so.0.2400.1） 144:==15429==by 0x40988A5:g_slist_append（in/lib/libglib-2.0.so.0.2400.1） 145:==15429==by 0x8048A0D:xyn\u pl\u get\u文件（xyn playlist.c:61） 146:==15429==by 0x8048848:main（main.c:18） 147: ==15429== 148:==15429==1个块中的2040字节仍然可以在11个块中的丢失记录8中访问 149:==15429==at 0x402425F:calloc（vg\u replace\u malloc.c:467） 150:==15429==0x408113B:g_malloc0（in/lib/libglib-2.0.so.0.2400.1） 151:==15429==0x40970AB:g_slice_alloc（in/lib/libglib-2.0.so.0.2400.1） 152:==15429==by 0x40988A5:g_slist_append（in/lib/libglib-2.0.so.0.2400.1） 153:==15429==by 0x80488F0:xyn\u pl\u get\u文件（xyn playlist.c:41） 154:==15429==by 0x8048848:main（main.c:18） 155: ==15429== 156:==15429==4320字节（36个块）可能在11个块中的丢失记录9中丢失 157:==15429==at 0x4024106:memalign（vg\u replace\u malloc.c:581） 158:==15429==0x4024163:posix_memalign（vg_replace_malloc.c:709） 159:==15429==0x40969C1:？？？（in/lib/libglib-2.0.so.0.2400.1） 160:==15429==0x4097222:g_slice_alloc（in/lib/libglib-2.0.so.0.2400.1） 161:==15429==by 0x40988A5:g_slist_append（in/lib/libglib-2.0.so.0.2400.1） 162:==15429==by 0x80489D2:xyn\u pl\u get\u文件（xyn playlist.c:58） 163:==15429==by 0x8048848:main（main.c:18） 164: ==15429== 165:==15429==56640字节（472个块中）可能在11个块中的丢失记录10中丢失 166:==15429==at 0x4024106:memalign（vg_replace_malloc.c:581） 167:==15429==0x4024163:posix_memalign（vg_replace_malloc.c:709） 168:==15429==0x40969C1:？？？（in/lib/libglib-2.0.so.0.2400.1） 169:==15429==0x4097222:g_slice_alloc（in/lib/libglib-2.0.so.0.2400.1） 170:==15429==by 0x40988A5:g_slist_append（in/lib/libglib-2.0.so.0.2400.1） 171:==15429==by 0x8048A0D:xyn_pl_get_文件（xyn playlist.c:61） 172:==15429==by 0x8048848:main（main.c:18） 173: ==15429== 174:==15429==6736块中的685118字节肯定会在丢失记录11（共11个）中丢失 175:==15429==at 0x4024F20:malloc（vg_替换_malloc.c:236） 176:==15429==0x4081243:g_malloc（in/lib/libglib-2.0.so.0.2400.1） 177:==15429==by0x409b85b:g_strconcat（in/lib/libglib-2.0.so.0.2400.1） 178:==15429==0x80489FE:xyn\u pl\u get\u文件（xyn playlist.c:62） 179:==15429==by 0x8048848:main（main.c:18） 180: ==15429== 181:==15429==泄漏汇总： 182:==15429==绝对丢失：6736块中685118字节 183:==15429==间接丢失：0块中的0字节 184:==15429==可能丢失：523个块中的62769字节 185:==15429==仍然可访问：4个块中的3564字节 186:==15429==抑制：0块中的0字节 187: ==15429== 188:==15429==对于检测到的和抑制的错误计数，请使用：-v重新运行 189:==15429==错误摘要：7个上下文中的7个错误（已抑制：8个中的17个） 190: ----------------------------------------------------------------------------------------------,c,glib,C,Glib,我使用上述代码是为了创建一个包含某个目录中所有文件路径的列表。（在我的情况下，fts.h或ftw.h不是一个选项） 我使用GLib作为数据结构库。我仍然怀疑GLib分配、取消分配内存的方式 当调用g_slist_free（list）时，我也会释放元素包含的数据？ 为什么会出现这些内存泄漏？ 当使用像GLib这样的复杂库时，valgrind是否是解决profilinf内存问题的合适工具 稍后编辑： 如果Ig_slist_foreach（l，（GFunc）g_free，NULL），valgrind报
fts.hftw.h如果I
g_slist_foreach（l，（GFunc）g_free，NULL），valgrind报告不同，（从“肯定丢失”到“间接丢失”的所有内存泄漏都将移动到“间接丢失”）。我还是不明白为什么？GLib collections不是实现释放的方法吗？否，g\u slist\u free
不会释放存储在列表中的数据（例如字符串）。它无法知道您是否以及如何释放这些数据。您可以将同一指针存储在多个列表中。此外，您还可以在列表中存储非指针类型，或未使用malloc
分配的类型。集合不允许您提供析构函数。因此，在释放列表之前，确实需要循环并释放数据
而且，g_slist
可以使用内存池，因此valgrind可能不会总是给出正确的结果
其他类型，例如，允许您为元素数据提供析构函数（GDestroyNotify
）。我认为GSList
默认使用切片分配器。如果将环境变量G_SLICE
设置为始终malloc
，则它将返回使用malloc/free，以便Valgrind可以跟踪它。可以使用G_slist\u free\u full（）
在释放列表的同时释放列表的内容。
1: /*
2: * File: xyn-playlist.c
3: * Author: Andrei Ciobanu
4: *
5: * Created on June 4, 2010, 12:47 PM
6: */
7:
8: #include <dirent.h>
9: #include <glib.h>
10: #include <stdio.h>
11: #include <stdlib.h>
12: #include <sys/stat.h>
13: #include <unistd.h>
14:
15: /**
16: * Returns a list all the file(paths) from a directory.
17: * Returns 'NULL' if a certain error occurs.
18: * @param dir_path.
19: * @param A list of gchars* indicating what file patterns to detect.
20: */
21: GSList *xyn_pl_get_files(const gchar *dir_path, GSList *file_patterns) {
22: /* Returning list containing file paths */
23: GSList *fpaths = NULL;
24: /* Used to scan directories for subdirs. Acts like a
25: * stack, to avoid recursion. */
26: GSList *dirs = NULL;
27: /* Current dir */
28: DIR *cdir = NULL;
29: /* Current dir entries */
30: struct dirent *cent = NULL;
31: /* File stats */
32: struct stat cent_stat;
33: /* dir_path duplicate, on the heap */
34: gchar *dir_pdup;
35:
36: if (dir_path == NULL) {
37: return NULL;
38: }
39:
40: dir_pdup = g_strdup((const gchar*) dir_path);
41: dirs = g_slist_append(dirs, (gpointer) dir_pdup);
42: while (dirs != NULL) {
43: cdir = opendir((const gchar*) dirs->data);
44: if (cdir == NULL) {
45: g_slist_free(dirs);
46: g_slist_free(fpaths);
47: return NULL;
48: }
49: chdir((const gchar*) dirs->data);
50: while ((cent = readdir(cdir)) != NULL) {
51: lstat(cent->d_name, ¢_stat);
52: if (S_ISDIR(cent_stat.st_mode)) {
53: if (g_strcmp0(cent->d_name, ".") == 0 ||
54: g_strcmp0(cent->d_name, "..") == 0) {
55: /* Skip "." and ".." dirs */
56: continue;
57: }
58: dirs = g_slist_append(dirs,
59: g_strconcat((gchar*) dirs->data, "/", cent->d_name, NULL));
60: } else {
61: fpaths = g_slist_append(fpaths,
62: g_strconcat((gchar*) dirs->data, "/", cent->d_name, NULL));
63: }
64: }
65: g_free(dirs->data);
66: dirs = g_slist_delete_link(dirs, dirs);
67: closedir(cdir);
68: }
69: return fpaths;
70: }
71:
72: int main(int argc, char** argv) {
73: GSList *l = NULL;
74: l = xyn_pl_get_files("/home/andrei/Music", NULL);
75: g_slist_foreach(l,(GFunc)printf,NULL);
76: printf("%d\n",g_slist_length(l));
77: g_slist_free(l);
78: return (0);
79: }
80:
81:
82: -----------------------------------------------------------------------------------------------==15429==
83: ==15429== HEAP SUMMARY:
84: ==15429== in use at exit: 751,451 bytes in 7,263 blocks
85: ==15429== total heap usage: 8,611 allocs, 1,348 frees, 22,898,217 bytes allocated
86: ==15429==
87: ==15429== 120 bytes in 1 blocks are possibly lost in loss record 1 of 11
88: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581)
89: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709)
90: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1)
91: ==15429== by 0x40971F6: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1)
92: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1)
93: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41)
94: ==15429== by 0x8048848: main (main.c:18)
95: ==15429==
96: ==15429== 129 bytes in 1 blocks are possibly lost in loss record 2 of 11
97: ==15429== at 0x4024F20: malloc (vg_replace_malloc.c:236)
98: ==15429== by 0x4081243: g_malloc (in /lib/libglib-2.0.so.0.2400.1)
99: ==15429== by 0x409B85B: g_strconcat (in /lib/libglib-2.0.so.0.2400.1)
100: ==15429== by 0x80489FE: xyn_pl_get_files (xyn-playlist.c:62)
101: ==15429== by 0x8048848: main (main.c:18)
102: ==15429==
103: ==15429== 360 bytes in 3 blocks are possibly lost in loss record 3 of 11
104: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581)
105: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709)
106: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1)
107: ==15429== by 0x4097222: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1)
108: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1)
109: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41)
110: ==15429== by 0x8048848: main (main.c:18)
111: ==15429==
112: ==15429== 508 bytes in 1 blocks are still reachable in loss record 4 of 11
113: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467)
114: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1)
115: ==15429== by 0x409624D: ??? (in /lib/libglib-2.0.so.0.2400.1)
116: ==15429== by 0x409710C: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1)
117: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1)
118: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41)
119: ==15429== by 0x8048848: main (main.c:18)
120: ==15429==
121: ==15429== 508 bytes in 1 blocks are still reachable in loss record 5 of 11
122: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467)
123: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1)
124: ==15429== by 0x409626F: ??? (in /lib/libglib-2.0.so.0.2400.1)
125: ==15429== by 0x409710C: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1)
126: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1)
127: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41)
128: ==15429== by 0x8048848: main (main.c:18)
129: ==15429==
130: ==15429== 508 bytes in 1 blocks are still reachable in loss record 6 of 11
131: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467)
132: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1)
133: ==15429== by 0x4096291: ??? (in /lib/libglib-2.0.so.0.2400.1)
134: ==15429== by 0x409710C: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1)
135: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1)
136: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41)
137: ==15429== by 0x8048848: main (main.c:18)
138: ==15429==
139: ==15429== 1,200 bytes in 10 blocks are possibly lost in loss record 7 of 11
140: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581)
141: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709)
142: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1)
143: ==15429== by 0x40971F6: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1)
144: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1)
145: ==15429== by 0x8048A0D: xyn_pl_get_files (xyn-playlist.c:61)
146: ==15429== by 0x8048848: main (main.c:18)
147: ==15429==
148: ==15429== 2,040 bytes in 1 blocks are still reachable in loss record 8 of 11
149: ==15429== at 0x402425F: calloc (vg_replace_malloc.c:467)
150: ==15429== by 0x408113B: g_malloc0 (in /lib/libglib-2.0.so.0.2400.1)
151: ==15429== by 0x40970AB: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1)
152: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1)
153: ==15429== by 0x80488F0: xyn_pl_get_files (xyn-playlist.c:41)
154: ==15429== by 0x8048848: main (main.c:18)
155: ==15429==
156: ==15429== 4,320 bytes in 36 blocks are possibly lost in loss record 9 of 11
157: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581)
158: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709)
159: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1)
160: ==15429== by 0x4097222: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1)
161: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1)
162: ==15429== by 0x80489D2: xyn_pl_get_files (xyn-playlist.c:58)
163: ==15429== by 0x8048848: main (main.c:18)
164: ==15429==
165: ==15429== 56,640 bytes in 472 blocks are possibly lost in loss record 10 of 11
166: ==15429== at 0x4024106: memalign (vg_replace_malloc.c:581)
167: ==15429== by 0x4024163: posix_memalign (vg_replace_malloc.c:709)
168: ==15429== by 0x40969C1: ??? (in /lib/libglib-2.0.so.0.2400.1)
169: ==15429== by 0x4097222: g_slice_alloc (in /lib/libglib-2.0.so.0.2400.1)
170: ==15429== by 0x40988A5: g_slist_append (in /lib/libglib-2.0.so.0.2400.1)
171: ==15429== by 0x8048A0D: xyn_pl_get_files (xyn-playlist.c:61)
172: ==15429== by 0x8048848: main (main.c:18)
173: ==15429==
174: ==15429== 685,118 bytes in 6,736 blocks are definitely lost in loss record 11 of 11
175: ==15429== at 0x4024F20: malloc (vg_replace_malloc.c:236)
176: ==15429== by 0x4081243: g_malloc (in /lib/libglib-2.0.so.0.2400.1)
177: ==15429== by 0x409B85B: g_strconcat (in /lib/libglib-2.0.so.0.2400.1)
178: ==15429== by 0x80489FE: xyn_pl_get_files (xyn-playlist.c:62)
179: ==15429== by 0x8048848: main (main.c:18)
180: ==15429==
181: ==15429== LEAK SUMMARY:
182: ==15429== definitely lost: 685,118 bytes in 6,736 blocks
183: ==15429== indirectly lost: 0 bytes in 0 blocks
184: ==15429== possibly lost: 62,769 bytes in 523 blocks
185: ==15429== still reachable: 3,564 bytes in 4 blocks
186: ==15429== suppressed: 0 bytes in 0 blocks
187: ==15429==
188: ==15429== For counts of detected and suppressed errors, rerun with: -v
189: ==15429== ERROR SUMMARY: 7 errors from 7 contexts (suppressed: 17 from 8)
190: ----------------------------------------------------------------------------------------------