[newlib-cygwin] Cygwin: add init_cygheap::compute_sigblkmask method
Corinna Vinschen
corinna@sourceware.org
Tue Mar 1 15:24:35 GMT 2022
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=05e7a60dd7fac7efd1ac792d45377d6971b55e23
commit 05e7a60dd7fac7efd1ac792d45377d6971b55e23
Author: Corinna Vinschen <corinna@vinschen.de>
Date: Tue Mar 1 16:13:20 2022 +0100
Cygwin: add init_cygheap::compute_sigblkmask method
Add method to compute process-wide signal block mask
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diff:
---
winsup/cygwin/cygheap.cc | 18 ++++++++++++++++++
winsup/cygwin/cygheap.h | 1 +
2 files changed, 19 insertions(+)
diff --git a/winsup/cygwin/cygheap.cc b/winsup/cygwin/cygheap.cc
index 01b49468e..1be7f0c32 100644
--- a/winsup/cygwin/cygheap.cc
+++ b/winsup/cygwin/cygheap.cc
@@ -737,6 +737,24 @@ init_cygheap::find_tls (int sig, bool& issig_wait)
return t;
}
+sigset_t
+init_cygheap::compute_sigblkmask ()
+{
+ sigset_t ret_mask = -1;
+
+ tls_sentry here (INFINITE);
+
+ int ix = -1;
+ /* Scan thread list looking for valid signal-receiving threads */
+ while (++ix < (int) nthreads)
+ {
+ /* Only pthreads have tid set to non-0. */
+ if (threadlist[ix].thread->tid && threadlist[ix].thread->initialized)
+ ret_mask &= threadlist[ix].thread->sigmask;
+ }
+ return ret_mask;
+}
+
/* Called from profil.c to sample all non-main thread PC values for profiling */
extern "C" void
cygheap_profthr_all (void (*profthr_byhandle) (HANDLE))
diff --git a/winsup/cygwin/cygheap.h b/winsup/cygwin/cygheap.h
index 252dd414d..a47d9819e 100644
--- a/winsup/cygwin/cygheap.h
+++ b/winsup/cygwin/cygheap.h
@@ -590,6 +590,7 @@ struct init_cygheap: public mini_cygheap
HANDLE __reg3 remove_tls (_cygtls *);
threadlist_t __reg2 *find_tls (_cygtls *);
threadlist_t __reg3 *find_tls (int, bool&);
+ sigset_t compute_sigblkmask ();
void unlock_tls (threadlist_t *t) { if (t) ReleaseMutex (t->mutex); }
};
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