From 42d3d99ae136d808c857bb56b2f1e653e38d3048 Mon Sep 17 00:00:00 2001
From: Klaus Schmidinger <vdr@tvdr.de>
Date: Tue, 21 Feb 2012 11:36:49 +0100
Subject: Revoked "Fixed a possible deadlock in time shift mode"

---
 dvbplayer.c | 39 ++++++++++++---------------------------
 1 file changed, 12 insertions(+), 27 deletions(-)

(limited to 'dvbplayer.c')

diff --git a/dvbplayer.c b/dvbplayer.c
index 2abc186c..4fd0685c 100644
--- a/dvbplayer.c
+++ b/dvbplayer.c
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: dvbplayer.c 2.24 2012/02/19 14:31:22 kls Exp $
+ * $Id: dvbplayer.c 2.25 2012/02/21 11:34:04 kls Exp $
  */
 
 #include "dvbplayer.h"
@@ -87,7 +87,6 @@ class cNonBlockingFileReader : public cThread {
 private:
   cUnbufferedFile *f;
   uchar *buffer;
-  uchar *result;
   int wanted;
   int length;
   cCondWait newSet;
@@ -101,7 +100,7 @@ public:
   void Clear(void);
   void Request(cUnbufferedFile *File, int Length);
   int Result(uchar **Buffer);
-  bool Reading(void) { return result; }
+  bool Reading(void) { return buffer; }
   bool WaitForDataMs(int msToWait);
   };
 
@@ -110,7 +109,6 @@ cNonBlockingFileReader::cNonBlockingFileReader(void)
 {
   f = NULL;
   buffer = NULL;
-  result = NULL;
   wanted = length = 0;
   Start();
 }
@@ -120,7 +118,6 @@ cNonBlockingFileReader::~cNonBlockingFileReader()
   newSet.Signal();
   Cancel(3);
   free(buffer);
-  free(result);
 }
 
 void cNonBlockingFileReader::Clear(void)
@@ -129,8 +126,6 @@ void cNonBlockingFileReader::Clear(void)
   f = NULL;
   free(buffer);
   buffer = NULL;
-  free(result);
-  result = NULL;
   wanted = length = 0;
   Unlock();
 }
@@ -142,18 +137,18 @@ void cNonBlockingFileReader::Request(cUnbufferedFile *File, int Length)
   wanted = Length;
   buffer = MALLOC(uchar, wanted);
   f = File;
-  newSet.Signal();
   Unlock();
+  newSet.Signal();
 }
 
 int cNonBlockingFileReader::Result(uchar **Buffer)
 {
   LOCK_THREAD;
-  if (result && length == wanted) {
-     *Buffer = result;
-     result = NULL;
+  if (buffer && length == wanted) {
+     *Buffer = buffer;
+     buffer = NULL;
      return wanted;
-  }
+     }
   errno = EAGAIN;
   return -1;
 }
@@ -177,8 +172,6 @@ void cNonBlockingFileReader::Action(void)
               length = wanted = r; // this will forward the error status to the caller
               }
            if (length == wanted) {
-              result = buffer;
-              buffer = NULL;
               cMutexLock NewDataLock(&newDataMutex);
               newDataCond.Broadcast();
               }
@@ -190,9 +183,9 @@ void cNonBlockingFileReader::Action(void)
 
 bool cNonBlockingFileReader::WaitForDataMs(int msToWait)
 {
-  if (result && length == wanted)
-     return true;
   cMutexLock NewDataLock(&newDataMutex);
+  if (buffer && length == wanted)
+     return true;
   return newDataCond.TimedWait(newDataMutex, msToWait);
 }
 
@@ -415,13 +408,13 @@ void cDvbPlayer::Action(void)
      Goto(0, true);
   while (Running()) {
         if (WaitingForData)
-           nonBlockingFileReader->WaitForDataMs(10); // this keeps the CPU load low, but reacts immediately on new data
+           nonBlockingFileReader->WaitForDataMs(3); // this keeps the CPU load low, but reacts immediately on new data
         else if (Sleep) {
            cPoller Poller;
            DevicePoll(Poller, 10);
            Sleep = false;
            if (playMode == pmStill || playMode == pmPause)
-              cCondWait::SleepMs(10);
+              cCondWait::SleepMs(3);
            }
         {
           LOCK_THREAD;
@@ -483,15 +476,7 @@ void cDvbPlayer::Action(void)
                    }
                 if (!eof) {
                    uchar *b = NULL;
-                   int Retries = 5;
-                   int r;
-                   while (true) {
-                         r = nonBlockingFileReader->Result(&b);
-                         if (r == -1 && errno == EAGAIN && --Retries)
-                            nonBlockingFileReader->WaitForDataMs(10); 
-                         else 
-                            break;
-                         }
+                   int r = nonBlockingFileReader->Result(&b);
                    if (r > 0) {
                       WaitingForData = false;
                       uint32_t Pts = 0;
-- 
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