Update to NSPR 4.9.5 Beta 2, part 2: actual changes.

mozilla/nsprpub/pr/src/threads/combined/pruthr.c

Index: mozilla/nsprpub/pr/src/threads/combined/pruthr.c
===================================================================
--- mozilla/nsprpub/pr/src/threads/combined/pruthr.c	(revision 179237)
+++ mozilla/nsprpub/pr/src/threads/combined/pruthr.c	(working copy)
@@ -237,6 +237,7 @@
     PR_ASSERT(thread->dumpArg == 0 && thread->dump == 0);
     PR_ASSERT(thread->errorString == 0 && thread->errorStringSize == 0);
     PR_ASSERT(thread->errorStringLength == 0);
+    PR_ASSERT(thread->name == 0);
 
     /* Reset data members in thread structure */
     thread->errorCode = thread->osErrorCode = 0;
@@ -1581,7 +1582,38 @@
     } else _PR_SetThreadPriority(thread, newPri);
 }
 
+PR_IMPLEMENT(PRStatus) PR_SetCurrentThreadName(const char *name)
+{
+    PRThread *thread;
+    size_t nameLen;
 
+    if (!name) {
+        PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
+        return PR_FAILURE;
+    }
+
+    thread = PR_GetCurrentThread();
+    if (!thread)
+        return PR_FAILURE;
+
+    PR_Free(thread->name);
+    nameLen = strlen(name);
+    thread->name = (char *)PR_Malloc(nameLen + 1);
+    if (!thread->name)
+        return PR_FAILURE;
+    memcpy(thread->name, name, nameLen + 1);
+    _PR_MD_SET_CURRENT_THREAD_NAME(thread->name);
+    return PR_SUCCESS;
+}
+
+PR_IMPLEMENT(const char *) PR_GetThreadName(const PRThread *thread)
+{
+    if (!thread)
+        return NULL;
+    return thread->name;
+}
+
+
 /*
 ** This routine prevents all other threads from running. This call is needed by 
 ** the garbage collector.