1.1 --- a/src/os/linux/vm/os_linux.cpp Fri May 17 07:44:31 2019 +0100
1.2 +++ b/src/os/linux/vm/os_linux.cpp Mon Oct 13 22:11:39 2014 +0200
1.3 @@ -136,6 +136,7 @@
1.4
1.5 int (*os::Linux::_clock_gettime)(clockid_t, struct timespec *) = NULL;
1.6 int (*os::Linux::_pthread_getcpuclockid)(pthread_t, clockid_t *) = NULL;
1.7 +int (*os::Linux::_pthread_setname_np)(pthread_t, const char*) = NULL;
1.8 Mutex* os::Linux::_createThread_lock = NULL;
1.9 pthread_t os::Linux::_main_thread;
1.10 int os::Linux::_page_size = -1;
1.11 @@ -5054,6 +5055,11 @@
1.12 StackRedPages = 1;
1.13 StackShadowPages = round_to((StackShadowPages*Linux::vm_default_page_size()), vm_page_size()) / vm_page_size();
1.14 }
1.15 +
1.16 + // retrieve entry point for pthread_setname_np
1.17 + Linux::_pthread_setname_np =
1.18 + (int(*)(pthread_t, const char*))dlsym(RTLD_DEFAULT, "pthread_setname_np");
1.19 +
1.20 }
1.21
1.22 // To install functions for atexit system call
1.23 @@ -5308,8 +5314,14 @@
1.24 }
1.25
1.26 void os::set_native_thread_name(const char *name) {
1.27 - // Not yet implemented.
1.28 - return;
1.29 + if (Linux::_pthread_setname_np) {
1.30 + char buf [16]; // according to glibc manpage, 16 chars incl. '/0'
1.31 + snprintf(buf, sizeof(buf), "%s", name);
1.32 + buf[sizeof(buf) - 1] = '\0';
1.33 + const int rc = Linux::_pthread_setname_np(pthread_self(), buf);
1.34 + // ERANGE should not happen; all other errors should just be ignored.
1.35 + assert(rc != ERANGE, "pthread_setname_np failed");
1.36 + }
1.37 }
1.38
1.39 bool os::distribute_processes(uint length, uint* distribution) {
