Now using the gettid() syscall to get a thread's pid, so that we get a useful value on NPTL systems

CONTRIBUTORS

@@ -1454,6 +1454,8 @@ Michael Reinelt <reinelt@eunet.at>
 Johannes Stezenbach <js@linuxtv.org>
  for pointing out that the byte swap for big endian systems in cDvbOsd::Flush()
  is wrong
+ for suggesting to use gettid() syscall to get a thread's pid, so that we get a
+ useful value on NPTL systems
 
 Paavo Hartikainen <pahartik@sci.fi>
  for verifying that the byte swap for big endian systems in cDvbOsd::Flush() was

HISTORY

@@ -3963,7 +3963,7 @@ Video Disk Recorder Revision History
   commands may now be executed at any time, and the message will be displayed
   (no more "pending message").
 
-2005-12-03: Version 1.3.38
+2005-12-11: Version 1.3.38
 
 - Fixed handling second audio and Dolby Digital PIDs for encrypted channels
   (was broken in version 1.3.37).
@@ -3972,3 +3972,5 @@ Video Disk Recorder Revision History
 - Now checking the channel's symbol rate in order to avoid problems on full
   featured DVB cards with symbol rates below 10000.
 - Limited the frequency of log messages from the cRepackers.
+- Now using the gettid() syscall to get a thread's pid, so that we get a
+  useful value on NPTL systems (suggested by Johannes Stezenbach).

ringbuffer.c

@@ -7,7 +7,7 @@
  * Parts of this file were inspired by the 'ringbuffy.c' from the
  * LinuxDVB driver (see linuxtv.org).
  *
- * $Id: ringbuffer.c 1.21 2004/10/15 13:49:25 kls Exp $
+ * $Id: ringbuffer.c 1.22 2005/12/10 10:55:26 kls Exp $
  */
 
 #include "ringbuffer.h"
@@ -46,7 +46,7 @@ void cRingBuffer::UpdatePercentage(int Fill)
   int percent = Fill * 100 / (Size() - 1) / PERCENTAGEDELTA * PERCENTAGEDELTA;
   if (percent != lastPercent) {
      if (percent >= PERCENTAGETHRESHOLD && percent > lastPercent || percent < PERCENTAGETHRESHOLD && lastPercent >= PERCENTAGETHRESHOLD) {
-        dsyslog("buffer usage: %d%% (tid=%ld)", percent, getThreadTid);
+        dsyslog("buffer usage: %d%% (tid=%d)", percent, getThreadTid);
         lastPercent = percent;
         }
      }
@@ -286,7 +286,7 @@ uchar *cRingBufferLinear::Get(int &Count)
   uchar *p = NULL;
   int Head = head;
   if (getThreadTid <= 0)
-     getThreadTid = pthread_self();
+     getThreadTid = cThread::ThreadId();
   int rest = Size() - tail;
   if (rest < margin && Head < tail) {
      int t = margin - rest;

ringbuffer.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: ringbuffer.h 1.16 2004/10/15 13:50:46 kls Exp $
+ * $Id: ringbuffer.h 1.17 2005/12/10 10:54:51 kls Exp $
  */
 
 #ifndef __RINGBUFFER_H
@@ -23,7 +23,7 @@ private:
   int overflowCount;
   int overflowBytes;
 protected:
-  pthread_t getThreadTid;
+  tThreadId getThreadTid;
   int maxFill;//XXX
   int lastPercent;
   bool statistics;//XXX

thread.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: thread.c 1.46 2005/11/27 15:15:53 kls Exp $
+ * $Id: thread.c 1.47 2005/12/11 12:09:24 kls Exp $
  */
 
 #include "thread.h"
@@ -12,6 +12,7 @@
 #include <malloc.h>
 #include <stdarg.h>
 #include <sys/resource.h>
+#include <sys/syscall.h>
 #include <sys/time.h>
 #include <sys/wait.h>
 #include <unistd.h>
@@ -231,10 +232,10 @@ void cThread::SetDescription(const char *Description, ...)
 void *cThread::StartThread(cThread *Thread)
 {
   if (Thread->description)
-     dsyslog("%s thread started (pid=%d, tid=%ld)", Thread->description, getpid(), pthread_self());
+     dsyslog("%s thread started (pid=%d, tid=%d)", Thread->description, getpid(), ThreadId());
   Thread->Action();
   if (Thread->description)
-     dsyslog("%s thread ended (pid=%d, tid=%ld)", Thread->description, getpid(), pthread_self());
+     dsyslog("%s thread ended (pid=%d, tid=%d)", Thread->description, getpid(), ThreadId());
   Thread->running = false;
   Thread->active = false;
   return NULL;
@@ -308,6 +309,13 @@ bool cThread::EmergencyExit(bool Request)
   return emergencyExitRequested = true; // yes, it's an assignment, not a comparison!
 }
 
+_syscall0(pid_t, gettid)
+
+tThreadId cThread::ThreadId(void)
+{
+  return gettid();
+}
+
 // --- cMutexLock ------------------------------------------------------------
 
 cMutexLock::cMutexLock(cMutex *Mutex)

thread.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: thread.h 1.32 2005/11/27 15:16:50 kls Exp $
+ * $Id: thread.h 1.33 2005/12/11 12:04:56 kls Exp $
  */
 
 #ifndef __THREAD_H
@@ -72,7 +72,7 @@ public:
   void Unlock(void);
   };
 
-typedef pthread_t tThreadId;
+typedef pid_t tThreadId;
 
 class cThread {
   friend class cThreadLock;
@@ -115,7 +115,7 @@ public:
   bool Active(void);
        ///< Checks whether the thread is still alive.
   static bool EmergencyExit(bool Request = false);
-  static tThreadId ThreadId(void) { return pthread_self(); }
+  static tThreadId ThreadId(void);
   static tThreadId IsMainThread(void) { return ThreadId() == mainThreadId; }
   };