aboutsummaryrefslogtreecommitdiff
path: root/htl
diff options
context:
space:
mode:
authorSamuel Thibault <samuel.thibault@ens-lyon.org>2020-02-09 22:23:52 +0000
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2020-02-10 01:03:50 +0000
commit59b7fe99f2593682ba779fe0faa8f1156d48d087 (patch)
tree6593a95d3d233a943b67a290cccf78fbbc793c0c /htl
parentf1cd3407e4c6767e0bbe2ca122b713c6581b8d67 (diff)
downloadglibc-59b7fe99f2593682ba779fe0faa8f1156d48d087.tar
glibc-59b7fe99f2593682ba779fe0faa8f1156d48d087.tar.gz
glibc-59b7fe99f2593682ba779fe0faa8f1156d48d087.tar.bz2
glibc-59b7fe99f2593682ba779fe0faa8f1156d48d087.zip
htl: Add support for libc cancellation points
Diffstat (limited to 'htl')
-rw-r--r--htl/Makefile1
-rw-r--r--htl/Versions2
-rw-r--r--htl/cancellation.c45
-rw-r--r--htl/pt-testcancel.c3
4 files changed, 50 insertions, 1 deletions
diff --git a/htl/Makefile b/htl/Makefile
index b2dc797ee4..1b33748934 100644
--- a/htl/Makefile
+++ b/htl/Makefile
@@ -132,6 +132,7 @@ libpthread-routines := pt-attr pt-attr-destroy pt-attr-getdetachstate \
\
shm-directory \
\
+ cancellation \
cthreads-compat \
herrno \
$(SYSDEPS)
diff --git a/htl/Versions b/htl/Versions
index 4f5f727753..1ec6f363d5 100644
--- a/htl/Versions
+++ b/htl/Versions
@@ -168,6 +168,8 @@ libpthread {
__pthread_mutex_init;
__pthread_mutex_destroy;
__pthread_mutex_timedlock;
+ __pthread_enable_asynccancel;
+ __pthread_disable_asynccancel;
_pthread_mutex_lock; _pthread_mutex_trylock; _pthread_mutex_unlock;
_pthread_rwlock_destroy; _pthread_rwlock_init;
diff --git a/htl/cancellation.c b/htl/cancellation.c
new file mode 100644
index 0000000000..598f911d91
--- /dev/null
+++ b/htl/cancellation.c
@@ -0,0 +1,45 @@
+/* Set the cancel type during blocking calls.
+ Copyright (C) 2020 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <pthread.h>
+#include <pthreadP.h>
+#include <pt-internal.h>
+
+int __pthread_enable_asynccancel (void)
+{
+ struct __pthread *p = _pthread_self ();
+ int oldtype;
+
+ __pthread_mutex_lock (&p->cancel_lock);
+ oldtype = p->cancel_type;
+ p->cancel_type = PTHREAD_CANCEL_ASYNCHRONOUS;
+ __pthread_mutex_unlock (&p->cancel_lock);
+
+ __pthread_testcancel ();
+
+ return oldtype;
+}
+
+void __pthread_disable_asynccancel (int oldtype)
+{
+ struct __pthread *p = _pthread_self ();
+
+ __pthread_mutex_lock (&p->cancel_lock);
+ p->cancel_type = oldtype;
+ __pthread_mutex_unlock (&p->cancel_lock);
+}
diff --git a/htl/pt-testcancel.c b/htl/pt-testcancel.c
index 1ec324b95f..37326280ee 100644
--- a/htl/pt-testcancel.c
+++ b/htl/pt-testcancel.c
@@ -22,7 +22,7 @@
#include <pthreadP.h>
void
-pthread_testcancel (void)
+__pthread_testcancel (void)
{
struct __pthread *p = _pthread_self ();
int cancelled;
@@ -34,3 +34,4 @@ pthread_testcancel (void)
if (cancelled)
__pthread_exit (PTHREAD_CANCELED);
}
+strong_alias (__pthread_testcancel, pthread_testcancel)