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| author | Jon Turney <jon.turney@dronecode.org.uk> | 2016-08-22 20:43:05 +0300 |
|---|---|---|
| committer | Jon Turney <jon.turney@dronecode.org.uk> | 2016-08-23 17:07:42 +0300 |
| commit | fdb7df230ded019be0472565d79de14fe677dea7 (patch) | |
| tree | 7035900f61662c0d2c5a6fc493b811f97293949b /winsup/cygwin/common.din | |
| parent | fb8e88815e89cc4bee5e514ca9a21c9771a31f1c (diff) | |
Add pthread_getname_np and pthread_setname_np
This patch adds pthread_getname_np and pthread_setname_np.
These were added to glibc in 2.12[1] and are also present in some form on
NetBSD and several UNIXes.
The code is based on NetBSD's implementation with changes to better match
Linux behaviour.
Implementation quirks:
* pthread_setname_np with a NULL pointer segfaults (as linux)
* pthread_setname_np returns ERANGE for names longer than 16 characters (as
linux)
* pthread_getname_np with a NULL pointer returns EFAULT (as linux)
* pthread_getname_np with a buffer length of less than 16 returns ERANGE (as
linux)
* pthread_getname_np truncates the thread name to fit the buffer length.
This guarantees success even when the default thread name is longer than 16
characters, but means there is no way to discover the actual length of the
thread name. (Linux always truncates the thread name to 16 characters)
* Changing program_invocation_short_name changes the default thread name (on
linux, it has no effect on the default thread name)
I'll leave it up to you to decide if any of these matter.
This is implemented via class pthread_attr to make it easier to add
pthread_attr_[gs]etname_np (present in NetBSD and some UNIXes) should it
ever be added to Linux (or we decide we want it anyway).
[1] https://sourceware.org/git/?p=glibc.git;a=blob;f=NEWS
Diffstat (limited to 'winsup/cygwin/common.din')
| -rw-r--r-- | winsup/cygwin/common.din | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/winsup/cygwin/common.din b/winsup/cygwin/common.din index d54b70abb..8f7a282f4 100644 --- a/winsup/cygwin/common.din +++ b/winsup/cygwin/common.din @@ -1046,6 +1046,7 @@ pthread_exit SIGFE pthread_getattr_np SIGFE pthread_getconcurrency SIGFE pthread_getcpuclockid SIGFE +pthread_getname_np SIGFE pthread_getschedparam SIGFE pthread_getsequence_np SIGFE pthread_getspecific SIGFE @@ -1086,6 +1087,7 @@ pthread_self SIGFE pthread_setcancelstate SIGFE pthread_setcanceltype SIGFE pthread_setconcurrency SIGFE +pthread_setname_np SIGFE pthread_setschedparam SIGFE pthread_setschedprio SIGFE pthread_setspecific SIGFE |