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* cygheap.cc (init_cygheap::init_tls_list): Accommodate threadlist

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having a new type threadlist_t *.  Convert commented out code into an
	#if 0.  Create thread mutex.  Explain why.
	(init_cygheap::remove_tls): Drop timeout value.  Always wait infinitely
	for tls_sentry.  Return mutex HANDLE of just deleted threadlist entry.
	(init_cygheap::find_tls): New implementation taking tls pointer as
	search parameter.  Return threadlist_t *.
	(init_cygheap::find_tls): Return threadlist_t *.  Define ix as auto
	variable.  Drop exception handling since crash must be made impossible
	due to correct synchronization.  Return with locked mutex.
	* cygheap.h (struct threadlist_t): Define.
	(struct init_cygheap): Convert threadlist to threadlist_t type.
	(init_cygheap::remove_tls): Align declaration to above change.
	(init_cygheap::find_tls): Ditto.
	(init_cygheap::unlock_tls): Define.
	* cygtls.cc (_cygtls::remove): Unlock and close mutex when finishing.
	* exceptions.cc (sigpacket::process): Lock _cygtls area of thread before
	accessing it.
	* fhandler_termios.cc (fhandler_termios::bg_check): Ditto.
	* sigproc.cc (sig_send): Ditto.
	* thread.cc (pthread::exit): Ditto.  Add comment.
	(pthread::cancel): Ditto.
This commit is contained in:
Corinna Vinschen
2014-11-28 20:46:13 +00:00
parent c2f50c4099
commit 26158dc3e9
8 changed files with 200 additions and 67 deletions
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3
winsup/cygwin/fhandler_termios.cc
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@ -193,9 +193,12 @@ fhandler_termios::bg_check (int sig)
return bg_eof;
}
threadlist_t *tl_entry;
tl_entry = cygheap->find_tls (_main_tls);
int sigs_ignored =
((void *) global_sigs[sig].sa_handler == (void *) SIG_IGN) ||
(_main_tls->sigmask & SIGTOMASK (sig));
cygheap->unlock_tls (tl_entry);
/* If the process is ignoring SIGTT*, then background IO is OK. If
the process is not ignoring SIGTT*, then the sig is to be sent to