From bd3b9c4ca5e93f10f7fd891b8c07cc0c5dfd198f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=89rico=20Rolim?= Date: Tue, 20 Apr 2021 16:15:15 -0300 Subject: add pthread_getname_np function based on the pthread_setname_np implementation --- src/thread/pthread_getname_np.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 src/thread/pthread_getname_np.c (limited to 'src') diff --git a/src/thread/pthread_getname_np.c b/src/thread/pthread_getname_np.c new file mode 100644 index 00000000..48d1a294 --- /dev/null +++ b/src/thread/pthread_getname_np.c @@ -0,0 +1,25 @@ +#define _GNU_SOURCE +#include +#include +#include + +#include "pthread_impl.h" + +int pthread_getname_np(pthread_t thread, char *name, size_t len) +{ + int fd, cs, status = 0; + char f[sizeof "/proc/self/task//comm" + 3*sizeof(int)]; + + if (len < 16) return ERANGE; + + if (thread == pthread_self()) + return prctl(PR_GET_NAME, (unsigned long)name, 0UL, 0UL, 0UL) ? errno : 0; + + snprintf(f, sizeof f, "/proc/self/task/%d/comm", thread->tid); + pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs); + if ((fd = open(f, O_RDONLY|O_CLOEXEC)) < 0 || (len = read(fd, name, len)) < 0) status = errno; + else name[len-1] = 0; /* remove trailing new line only if successful */ + if (fd >= 0) close(fd); + pthread_setcancelstate(cs, 0); + return status; +} -- cgit v1.2.1