Update to NSPR 4.10.4.

nspr/pr/include/private/primpl.h

Index: nspr/pr/include/private/primpl.h
===================================================================
--- nspr/pr/include/private/primpl.h	(revision 257452)
+++ nspr/pr/include/private/primpl.h	(working copy)
@@ -539,6 +539,8 @@
     _PR_MD_UNLOCK(&(_lock)->ilock);
     
 extern void _PR_UnblockLockWaiter(PRLock *lock);
+extern PRStatus _PR_InitLock(PRLock *lock);
+extern void _PR_FreeLock(PRLock *lock);
 
 #define _PR_LOCK_PTR(_qp) \
     ((PRLock*) ((char*) (_qp) - offsetof(PRLock,links)))
@@ -550,8 +552,11 @@
 #define _PR_CVAR_UNLOCK(_cvar) \
     _PR_MD_UNLOCK(&(_cvar)->ilock);
 
+extern PRStatus _PR_InitCondVar(PRCondVar *cvar, PRLock *lock);
+extern void _PR_FreeCondVar(PRCondVar *cvar);
 extern PRStatus _PR_WaitCondVar(
     PRThread *thread, PRCondVar *cvar, PRLock *lock, PRIntervalTime timeout);
+extern void _PR_NotifyCondVar(PRCondVar *cvar, PRThread *me);
 extern PRUint32 _PR_CondVarToString(PRCondVar *cvar, char *buf, PRUint32 buflen);
 
 NSPR_API(void) _PR_Notify(PRMonitor *mon, PRBool all, PRBool sticky);
@@ -1420,8 +1425,6 @@
 #endif
 };
 
-extern void _PR_InitLocks(void);
-
 struct PRCondVar {
     PRLock *lock;               /* associated lock that protects the condition */
 #if defined(_PR_PTHREADS)
@@ -1446,13 +1449,38 @@
 struct PRMonitor {
     const char* name;           /* monitor name for debugging */
 #if defined(_PR_PTHREADS)
-    PRLock lock;                /* the lock structure */
-    pthread_t owner;            /* the owner of the lock or invalid */
-    PRCondVar *cvar;            /* condition variable queue */
+    pthread_mutex_t lock;       /* lock is only held when accessing fields
+                                 * of the PRMonitor, instead of being held
+                                 * while the monitor is entered. The only
+                                 * exception is notifyTimes, which is
+                                 * protected by the monitor. */
+    pthread_t owner;            /* the owner of the monitor or invalid */
+    pthread_cond_t entryCV;     /* for threads waiting to enter the monitor */
+
+    pthread_cond_t waitCV;      /* for threads waiting on the monitor */
+    PRInt32 refCount;           /* reference count, an atomic variable.
+                                 * PR_NewMonitor adds a reference to the
+                                 * newly created PRMonitor, and
+                                 * PR_DestroyMonitor releases that reference.
+                                 * PR_ExitMonitor adds a reference before
+                                 * unlocking the internal lock if it needs to
+                                 * signal entryCV, and releases the reference
+                                 * after signaling entryCV. */
 #else  /* defined(_PR_PTHREADS) */
-    PRCondVar *cvar;            /* associated lock and condition variable queue */
+    PRLock lock;                /* lock is only held when accessing fields
+                                 * of the PRMonitor, instead of being held
+                                 * while the monitor is entered. The only
+                                 * exception is notifyTimes, which is
+                                 * protected by the monitor. */
+    PRThread *owner;            /* the owner of the monitor or invalid */
+    PRCondVar entryCV;          /* for threads waiting to enter the monitor */
+
+    PRCondVar waitCV;           /* for threads waiting on the monitor */
 #endif /* defined(_PR_PTHREADS) */
     PRUint32 entryCount;        /* # of times re-entered */
+    PRIntn notifyTimes;         /* number of pending notifies for waitCV.
+                                 * The special value -1 means a broadcast
+                                 * (PR_NotifyAll). */
 };
 
 /************************************************************************/
@@ -1472,8 +1500,6 @@
 #endif /* defined(_PR_BTHREADS) */
 };
 
-NSPR_API(void) _PR_InitSem(void);
-
 /*************************************************************************/
 
 struct PRSem {
@@ -1555,6 +1581,8 @@
 
 #if defined(_PR_PTHREADS)
     pthread_t id;                   /* pthread identifier for the thread */
+    PRBool idSet;                   /* whether 'id' has been set. Protected by
+                                     * pt_book.ml. */
 #ifdef _PR_NICE_PRIORITY_SCHEDULING
     pid_t tid;                      /* Linux-specific kernel thread ID */
 #endif
@@ -1745,6 +1773,7 @@
 }; 
 #endif /* MOZ_UNICODE */
 
+extern void _PR_InitLocks(void);
 extern void _PR_InitSegs(void);
 extern void _PR_InitStacks(void);
 extern void _PR_InitTPD(void);
@@ -1762,7 +1791,6 @@
 extern void _PR_InitTime(void);
 extern void _PR_InitMW(void);
 extern void _PR_InitRWLocks(void);
-extern void _PR_NotifyCondVar(PRCondVar *cvar, PRThread *me);
 extern void _PR_CleanupThread(PRThread *thread);
 extern void _PR_CleanupCallOnce(void);
 extern void _PR_CleanupMW(void);