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| author | Siddhesh Poyarekar <siddhesh@redhat.com> | 2012-05-15 09:41:27 +0530 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@redhat.com> | 2012-05-15 09:41:57 +0530 |
| commit | 439bf404b8fa125cf950dc1aa37838702c5353ea (patch) | |
| tree | da5913033bcfa18987da0aabf69ad99b751772a3 /nptl/pthreadP.h | |
| parent | 2949684c162a4413e42249d6b2ad554cb468b5be (diff) | |
| download | glibc-439bf404b8fa125cf950dc1aa37838702c5353ea.zip glibc-439bf404b8fa125cf950dc1aa37838702c5353ea.tar.gz glibc-439bf404b8fa125cf950dc1aa37838702c5353ea.tar.bz2 | |
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.
Diffstat (limited to 'nptl/pthreadP.h')
| -rw-r--r-- | nptl/pthreadP.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/nptl/pthreadP.h b/nptl/pthreadP.h index 68c690e..24a2471 100644 --- a/nptl/pthreadP.h +++ b/nptl/pthreadP.h @@ -378,7 +378,9 @@ extern int *__libc_pthread_init (unsigned long int *ptr, const struct pthread_functions *functions) internal_function; -/* 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. */ extern int __pthread_multiple_threads attribute_hidden; /* Pointer to the corresponding variable in libc. */ extern int *__libc_multiple_threads_ptr attribute_hidden; |