diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-12-07 16:21:55 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-06-09 15:16:45 -0300 |
| commit | f779b1efb35fe141e47952af3ac7f0540acca401 (patch) | |
| tree | c85d1e5a2b7f93048159938802f187d98a1b8d09 /include | |
| parent | 8c1c0aae2079039a629b15098d78f3d11aabefb4 (diff) | |
| download | glibc-f779b1efb35fe141e47952af3ac7f0540acca401.zip glibc-f779b1efb35fe141e47952af3ac7f0540acca401.tar.gz glibc-f779b1efb35fe141e47952af3ac7f0540acca401.tar.bz2 | |
nptl: Implement raise in terms of pthread_kill
Now that pthread_kill is provided by libc.so it is possible to
implement the generic POSIX implementation as
'pthread_kill(pthread_self(), sig)'.
For Linux implementation, pthread_kill read the targeting TID from
the TCB. For raise, this it not possible because it would make raise
fail when issue after vfork (where creates the resulting process
has a different TID from the parent, but its TCB is not updated as
for pthread_create). To make raise use pthread_kill, it is make
usable from vfork by getting the target thread id through gettid
syscall.
Checked on x86_64-linux-gnu and aarch64-linux-gnu.
Diffstat (limited to 'include')
| -rw-r--r-- | include/pthread.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/pthread.h b/include/pthread.h index a3e1cf5..1158919 100644 --- a/include/pthread.h +++ b/include/pthread.h @@ -16,4 +16,9 @@ extern int __pthread_barrier_wait (pthread_barrier_t *__barrier) /* This function is called to initialize the pthread library. */ extern void __pthread_initialize (void) __attribute__ ((weak)); + +extern int __pthread_kill (pthread_t threadid, int signo); + +extern pthread_t __pthread_self (void); + #endif |