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Small change to significantly reduce stack usage during database scanning. This should fix FS#10396.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21576 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Magnus Holmgren 2009-06-30 17:39:03 +00:00
parent 55b656d9c5
commit 8c22a60290
1 changed files with 20 additions and 7 deletions
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27
apps/tagcache.c
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@ -4091,13 +4091,30 @@ static bool check_deleted_files(void)
return true; return true;
} }
/* Note that this function must not be inlined, otherwise the whole point
* of having the code in a separate function is lost.
*/
static void __attribute__ ((noinline)) check_ignore(const char *dirname,
int *ignore, int *unignore)
{
char newpath[MAX_PATH];
/* check for a database.ignore file */
snprintf(newpath, MAX_PATH, "%s/database.ignore", dirname);
*ignore = file_exists(newpath);
/* check for a database.unignore file */
snprintf(newpath, MAX_PATH, "%s/database.unignore", dirname);
*unignore = file_exists(newpath);
}
static bool check_dir(const char *dirname, int add_files) static bool check_dir(const char *dirname, int add_files)
{ {
DIR *dir; DIR *dir;
int len; int len;
int success = false; int success = false;
int ignore, unignore; int ignore, unignore;
char newpath[MAX_PATH];
dir = opendir(dirname); dir = opendir(dirname);
if (!dir) if (!dir)
@ -4106,12 +4123,8 @@ static bool check_dir(const char *dirname, int add_files)
return false; return false;
} }
/* check for a database.ignore file */ /* check for a database.ignore and database.unignore */
snprintf(newpath, MAX_PATH, "%s/database.ignore", dirname); check_ignore(dirname, &ignore, &unignore);
ignore = file_exists(newpath);
/* check for a database.unignore file */
snprintf(newpath, MAX_PATH, "%s/database.unignore", dirname);
unignore = file_exists(newpath);
/* don't do anything if both ignore and unignore are there */ /* don't do anything if both ignore and unignore are there */
if (ignore != unignore) if (ignore != unignore)