Added GetIThread method

base/public/nsIThread.h

@@ -59,8 +59,12 @@ class nsIThread : public nsISupports
 public:
     NS_DEFINE_STATIC_IID_ACCESSOR(NS_ITHREAD_IID);
 
+    // returns the nsIThread for the current thread:
     static NS_BASE nsresult GetCurrent(nsIThread* *result);
 
+    // returns the nsIThread for an arbitrary PRThread:
+    static NS_BASE nsresult GetIThread(PRThread* prthread, nsIThread* *result);
+
     NS_IMETHOD Join() = 0;
 
     NS_IMETHOD GetPriority(PRThreadPriority *result) = 0;

base/src/nsThread.cpp

@@ -201,6 +201,12 @@ nsThread::RegisterThreadSelf()
 
 NS_BASE nsresult
 nsIThread::GetCurrent(nsIThread* *result)
+{
+    return GetIThread(PR_CurrentThread(), result);
+}
+
+NS_BASE nsresult
+nsIThread::GetIThread(PRThread* prthread, nsIThread* *result)
 {
     PRStatus status;
     nsThread* thread;
@@ -219,7 +225,7 @@ nsIThread::GetCurrent(nsIThread* *result)
         if (thread == nsnull)
             return NS_ERROR_OUT_OF_MEMORY;
         NS_ADDREF(thread);
-        thread->SetPRThread(PR_CurrentThread());
+        thread->SetPRThread(prthread);
         nsresult rv = thread->RegisterThreadSelf();
         if (NS_FAILED(rv)) return rv;
     }

xpcom/threads/nsIThread.h

@@ -59,8 +59,12 @@ class nsIThread : public nsISupports
 public:
     NS_DEFINE_STATIC_IID_ACCESSOR(NS_ITHREAD_IID);
 
+    // returns the nsIThread for the current thread:
     static NS_BASE nsresult GetCurrent(nsIThread* *result);
 
+    // returns the nsIThread for an arbitrary PRThread:
+    static NS_BASE nsresult GetIThread(PRThread* prthread, nsIThread* *result);
+
     NS_IMETHOD Join() = 0;
 
     NS_IMETHOD GetPriority(PRThreadPriority *result) = 0;

xpcom/threads/nsThread.cpp

@@ -201,6 +201,12 @@ nsThread::RegisterThreadSelf()
 
 NS_BASE nsresult
 nsIThread::GetCurrent(nsIThread* *result)
+{
+    return GetIThread(PR_CurrentThread(), result);
+}
+
+NS_BASE nsresult
+nsIThread::GetIThread(PRThread* prthread, nsIThread* *result)
 {
     PRStatus status;
     nsThread* thread;
@@ -219,7 +225,7 @@ nsIThread::GetCurrent(nsIThread* *result)
         if (thread == nsnull)
             return NS_ERROR_OUT_OF_MEMORY;
         NS_ADDREF(thread);
-        thread->SetPRThread(PR_CurrentThread());
+        thread->SetPRThread(prthread);
         nsresult rv = thread->RegisterThreadSelf();
         if (NS_FAILED(rv)) return rv;
     }