pthread: add pthread_{getname_np,setname_npp}

- These two functions imported for Linux/BSD compability.

Signed-off-by: Han Pengfei <pengphei@qq.com>
Change-Id: I3e9cada26f1ed043bfaed83e8185dcfff3bd71e2
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5746
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

headers/compatibility/gnu/pthread.h

@@ -19,6 +19,9 @@ extern "C" {
 
 extern int pthread_getattr_np(pthread_t thread, pthread_attr_t* attr);
 
+extern int pthread_getname_np(pthread_t thread, char* buffer, size_t length);
+extern int pthread_setname_np(pthread_t thread, const char* name);
+
 
 #ifdef __cplusplus
 }

headers/private/libroot/pthread_private.h

@@ -94,6 +94,9 @@ status_t __pthread_init_creation_attributes(
 void __pthread_set_default_priority(int32 priority);
 status_t __pthread_mutex_lock(pthread_mutex_t* mutex, bigtime_t timeout);
 
+int __pthread_getname_np(pthread_t thread, char* buffer, size_t length);
+int __pthread_setname_np(pthread_t thread, const char* name);
+
 #ifdef __cplusplus
 }
 #endif

src/system/libroot/posix/pthread/pthread.cpp

@@ -315,3 +315,31 @@ get_pthread_thread_id(pthread_t thread)
 {
 	return thread->id;
 }
+
+
+int
+__pthread_getname_np(pthread_t thread, char* buffer, size_t length)
+{
+    thread_info info;
+    status_t status = _kern_get_thread_info(thread->id, &info);
+    if (status == B_BAD_THREAD_ID)
+        return ESRCH;
+    if (strlcpy(buffer, info.name, length) >= length)
+        return ERANGE;
+    return 0;
+}
+
+
+int
+__pthread_setname_np(pthread_t thread, const char* name)
+{
+    status_t status = _kern_rename_thread(thread->id, name);
+    if (status == B_BAD_THREAD_ID)
+        return ESRCH;
+    if (status < B_OK)
+        return status;
+    return 0;
+}
+
+B_DEFINE_WEAK_ALIAS(__pthread_getname_np, pthread_getname_np);
+B_DEFINE_WEAK_ALIAS(__pthread_setname_np, pthread_setname_np);

src/system/libroot/stubbed/libroot_stubs.c

@@ -880,9 +880,11 @@ void __pthread_cleanup_pop_handler() {}
 void __pthread_cleanup_push_handler() {}
 void __pthread_destroy_thread() {}
 void __pthread_getattr_np() {}
+void __pthread_getname_np() {}
 void __pthread_init_creation_attributes() {}
 void __pthread_key_call_destructors() {}
 void __pthread_set_default_priority() {}
+void __pthread_setname_np() {}
 void __pthread_sigmask() {}
 void __pthread_sigmask_beos() {}
 void __random_r() {}
@@ -2226,6 +2228,7 @@ void pthread_equal() {}
 void pthread_exit() {}
 void pthread_getattr_np() {}
 void pthread_getconcurrency() {}
+void pthread_getname_np() {}
 void pthread_getschedparam() {}
 void pthread_getspecific() {}
 void pthread_join() {}
@@ -2271,6 +2274,7 @@ void pthread_self() {}
 void pthread_setcancelstate() {}
 void pthread_setcanceltype() {}
 void pthread_setconcurrency() {}
+void pthread_setname_np() {}
 void pthread_setschedparam() {}
 void pthread_setspecific() {}
 void pthread_spin_destroy() {}

src/system/libroot/stubbed/libroot_stubs_legacy.c

@@ -726,10 +726,12 @@ void __pthread_cleanup_pop_handler() {}
 void __pthread_cleanup_push_handler() {}
 void __pthread_destroy_thread() {}
 void __pthread_getattr_np() {}
+void __pthread_getname_np() {}
 void __pthread_init_creation_attributes() {}
 void __pthread_key_call_destructors() {}
 void __pthread_mutex_lock__FP14_pthread_mutexUlx() {}
 void __pthread_set_default_priority() {}
+void __pthread_setname_np() {}
 void __pthread_sigmask() {}
 void __pthread_sigmask_beos() {}
 void __pure_virtual() {}
@@ -2205,6 +2207,7 @@ void pthread_equal() {}
 void pthread_exit() {}
 void pthread_getattr_np() {}
 void pthread_getconcurrency() {}
+void pthread_getname_np() {}
 void pthread_getschedparam() {}
 void pthread_getspecific() {}
 void pthread_join() {}
@@ -2250,6 +2253,7 @@ void pthread_self() {}
 void pthread_setcancelstate() {}
 void pthread_setcanceltype() {}
 void pthread_setconcurrency() {}
+void pthread_setname_np() {}
 void pthread_setschedparam() {}
 void pthread_setspecific() {}
 void pthread_spin_destroy() {}