[code]
<---------------____________
返回到
test_parse_constent_dipostion() /*读到这里可以看出只是一个测试,某某编码格式的一种*/
{
mu_assert() /*返回某个信息*/
}
__________------------>
/*src/test.h*/
#define mu_assert(message, test) do{ if (!test)) return message; } while (0)
/*根据提供的实参，我们可以知道一次也不会返回错误的：理由是：如果返回res 为 false 那么 filename 和 test_array[i].name 是肯定不会相等的，如果是ture，更不用说*/
_____________________________________________________________________
返回到main
#define mu_run_test (test) 定义在 /src/test.h
#define mu_run_test(test) \
do{ \
const char *message ; \
puts("RUNNING TEST " #test ". . ."); \
message = test( ); \
tests_run++; \
if (message ) return message ; \ /*这里message返回的是NULL，所以不会输出什么*/
puts ("PASSED \n") ; \
} while ( 0 )
________________________________________________
mu_run_test (test_parse_content_disposition); 分析完毕 */
——————————————————————————————————————————————
subdir_p()
{
......
if(!op.ignore_case)
for（; *d1 && *d2 && (!d1 == *d2); ++d1, d2) /*如果不忽略对目录和文件名的检查，那么就检查*/
;
else(; *d1 && *d2 &&(c_tolower( !d1) == c_tolower(*d2)); ++d1; ++d2)
;
return *d1 == '\0' &&( d2 == '\0' || *d2 == '/'); /*在此的意思却自己设置了几个文件名，然后用来检查，只有最后那一个不符合返回值为 false*/
}
<----------------____________________
test_subdir_p()
{
....
mu_assert();
return NULL;
}
__________________------------------------->
第三个测试，跟过关一样：），不过离主体还有段不小距离。至少得检查完吧。
mu_run_test(test_dir_matches_p);_________------------>
/*src/utils.c*/
test_dir_matches_p()
{
......
/*这个和上面一样，都是定义一些名字然后让你去测试，这次好像是从一些目录名称中找到对应的*/
例如 struct {
char *dirlist[3];
char *dir;
bool result;
}test_array[] = {
{ { "/somedir", "someotherdir",NULL}, "somedir", ture}, /*这个显然是有的,所以返回必须是ture，才是正确的，*/
{ { */*dl", "someotherdir", NULL}, "somedir/d1", ture}, /*我认为这里面的*是通配符*/
.... ... ...
};
. . .
for ( i = 0; i < count(test_array); i++)
{
bool res = dir_matches_p(test_array[i].dirlist, test_array[i].dir);/*_______-------->/src/utils.c*/
mu_assert ("test ..... , res == test_array[i].result);
}
return NULL;
}
__________------------>
dir_matches_p()
{
char **x;
int (*mather) (const char *, const char *, int) = opt.ignore_case? fnmatch_nocase: fnmatch;
for(x = dirlist; *x; x++)
{
. . .
｝
. . .
｝
————————————————————————————－－－－
fnmatch_nocase( )/*___________---------->utils.c*/
#ifdef FNM_CASEDFOLD 进行匹配时，不区分大小写字母
return fnmatch( pattern, string, flags | FNM_CASEFOLD);
#else /*就是区分大小写先看不区分大小写的匹配*/
char *patcopy = (char *)allca(strlen (pattern) + 1); /*________--------->/lib/alloca.c*/
char *strcopy = (char *)alloca(strlen (string) + 1);
. . .
__________-------------->
/*lib/alloca.c*/
/* If your stack is a linked list of frames, you have to
provide an "address metric" ADDRESS_FUNCTION macro. 如果栈是页表的链表，那么就提供ADDRESS_FUNCTION 的宏*/
alloca()
{
ADDRESS_FUNCTION(); /*检查栈__________---------------->同一个文件*/
___________---------->
#if defined (CRAY) && defined(CRAY_STACKES_END)
#define ADDRESS_FUNCTION(arg) (char *) i00afunc(&(arg)) /*_____--------->alloca.c*/
#else
#define ADDRESS_FUNCTION(arg) &(arg)
#endif
___________---------->
static long i100afunc(long *address)
{
struct stk_stat status; __________-------------->/*lib/alloca.c*/
struct sk_trailer *trailer; ___________---------->/*lib/alloca.c*/
. . .
}
_____-------------->
struct skt_stat
{
275 {
276 long now; /* Current total stack size. 当前堆栈总大小 */
277 long maxc; /* Amount of contiguous space which would
278 be required to satisfy the maximum
279 stack demand to date. */
280 long high_water; /* Stack high-water mark. 栈高水位标记 */
281 long overflows; /* Number of stack overflow ($STKOFEN) calls . */
282 long hits; /* Number of internal buffer hits. 内部命中的次数*/
283 long extends; /* Number of block extensions. 块的扩展数目*/
284 long stko_mallocs; /* Block allocations by $STKOFEN. 申请块*/
285 long underflows; /* Number of stack underflow calls ($STKRETN ). */
286 long stko_free; /* Number of deallocations by $STKRETN. */
287 long stkm_free; /* Number of deallocations by $STKMRET. */
288 long segments; /* Current number of stack segments. 当前栈的段数目*/
289 long maxs; /* Maximum number of stack segments so far. 目前为止最大的段数目 */
290 long pad_size; /* Stack pad size. 栈块大小*/
291 long current_address; /* Current stack segment address.当前栈段地址 */
292 long current_size; /* Current stack segment size. This
293 number is actually corrupted by STKSTAT to
294 include the fifteen word trailer area. * /
295 long initial_address; /* Address of initial segment. */
296 long initial_size; /* Size of initial segment. */
297 };
_______---------------->
303 struct stk_trailer
304 {
305 long this_address; /* Address of this block. */
306 long this_size; /* Size of this block (does not include
307 this trailer). */
308 long unknown2;
309 long unknown3;
310 long link; /* Address of trailer block of previous
311 segment. */
312 long unknown5;
313 long unknown6;
314 long unknown7;
315 long unknown8;
316 long unknown9;
317 long unknown10;
318 long unknown11;
319 long unknown12;
320 long unknown13;
321 long unknown14;
322 };
<-----------------------_______________
返回到
i00afunc()
{
..
trailer = (struct stk_trailer *) (status.current_address + status.current_size -15) /*见上访的current_size.栈上有15个字被STKSTAT贪污,此处地址就拿回来*/
if ( trailer == 0)
abort();
while( trailer ! = 0)
{
block = (long* ) trailer->this_address;
size = trailer->this_size;
if (block == 0 | |size == 0)
abort();
trailer = (struct sk_trailer *) trailer->link; /*上一个此结构的地址,早已经有联系*/
if (( block <= address) &&(address < (block + size))) /*发现这个地址正好在此块中*/
break;
}
/*此处，栈上本来在初始化时就有这些变量，现在只是取出来使用*/
result = address - block;
if (trailer == 0)
{
return result;
}
do
{
if (trailer->this_size <= 0)
abort ();
result += trailer->this_size;
trailer = (struct stk_trailer *) trailer->link;
}
while (trailer != 0);
return (result);
}
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