From 439bf404b8fa125cf950dc1aa37838702c5353ea Mon Sep 17 00:00:00 2001 From: Siddhesh Poyarekar Date: Tue, 15 May 2012 09:41:27 +0530 Subject: Allow a single-threaded program to cancel itself There is nothing in the POSIX specification to disallow a single-threaded program from cancelling itself, so we forcibly enable multiple_threads to allow the next available cancellation point in the thread to run. Also added additional tests to cover various cancellation scenarios. --- nptl/vars.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'nptl/vars.c') diff --git a/nptl/vars.c b/nptl/vars.c index 8f3023c..43a6e39 100644 --- a/nptl/vars.c +++ b/nptl/vars.c @@ -32,7 +32,9 @@ size_t __default_stacksize attribute_hidden int __is_smp attribute_hidden; #ifndef TLS_MULTIPLE_THREADS_IN_TCB -/* Variable set to a nonzero value if more than one thread runs or ran. */ +/* Variable set to a nonzero value either if more than one thread runs or ran, + or if a single-threaded process is trying to cancel itself. See + nptl/descr.h for more context on the single-threaded process case. */ int __pthread_multiple_threads attribute_hidden; #endif -- cgit v1.1