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* passwd.cc (read_etc_passwd): Don't bother with locking when

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in cygwin initialization since there is only one thread.
* grp.cc (read_etc_group): Ditto.
This commit is contained in:
Christopher Faylor
2001-09-28 07:01:22 +00:00
parent 9c61aed684
commit 8b51edbfa6
3 changed files with 33 additions and 14 deletions
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21
winsup/cygwin/passwd.cc
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@ -109,6 +109,14 @@ add_pwd_line (char *line)
parse_pwd (passwd_buf[curr_lines++], line);
}
class passwd_lock
{
pthread_mutex_t mutex;
public:
passwd_lock (): mutex ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER) {}
void arm () {pthread_mutex_lock (&mutex); }
};
/* Read in /etc/passwd and save contents in the password cache.
This sets passwd_state to loaded or emulated so functions in this file can
tell that /etc/passwd has been read in or will be emulated. */
@ -120,15 +128,14 @@ read_etc_passwd ()
* for non-shared mutexs in the future. Also, this function will at most be called
* once from each thread, after that the passwd_state test will succeed
*/
static NO_COPY pthread_mutex_t etc_passwd_mutex = (pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_lock (&etc_passwd_mutex);
static NO_COPY passwd_lock here;
if (cygwin_finished_initializing)
here.arm ();
/* if we got blocked by the mutex, then etc_passwd may have been processed */
if (passwd_state != uninitialized)
{
pthread_mutex_unlock(&etc_passwd_mutex);
return;
}
return;
if (passwd_state != initializing)
{
@ -165,7 +172,7 @@ read_etc_passwd ()
}
pthread_mutex_unlock (&etc_passwd_mutex);
return;
}
/* Cygwin internal */