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Fixed a crash in case the index file can't be accessed any more during replay

This commit is contained in:
Klaus Schmidinger 2003-03-30 13:31:32 +02:00
parent f2517f2c3a
commit 0f9f3f057a
3 changed files with 13 additions and 13 deletions
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1
CONTRIBUTORS
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@ -163,6 +163,7 @@ Stefan Huelswitt <huels@iname.com>
encrypted channel encrypted channel
for reporting a problem with timers when channel IDs have a 'source' that is 0 for reporting a problem with timers when channel IDs have a 'source' that is 0
for reporting a new/delete malloc/free mismatch in ringbuffer.c for reporting a new/delete malloc/free mismatch in ringbuffer.c
for reporting a crash in case the index file can't be accessed any more during replay
Ulrich Röder <roeder@efr-net.de> Ulrich Röder <roeder@efr-net.de>
for pointing out that there are channels that have a symbol rate higher than for pointing out that there are channels that have a symbol rate higher than

2
HISTORY
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@ -2008,3 +2008,5 @@ Video Disk Recorder Revision History
Werner Fink). Werner Fink).
- Further increased the timeout until an index file is considerd no longer to be - Further increased the timeout until an index file is considerd no longer to be
written. written.
- Fixed a crash in case the index file can't be accessed any more during replay
(thanks to Stefan Huelswitt for reporting this one).

23
recording.c
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and * See the main source file 'vdr.c' for copyright information and
* how to reach the author. * how to reach the author.
* *
* $Id: recording.c 1.73 2003/03/30 13:07:03 kls Exp $ * $Id: recording.c 1.74 2003/03/30 13:26:20 kls Exp $
*/ */
#include "recording.h" #include "recording.h"
@ -848,6 +848,7 @@ cIndexFile::~cIndexFile()
bool cIndexFile::CatchUp(int Index) bool cIndexFile::CatchUp(int Index)
{ {
// returns true unless something really goes wrong, so that 'index' becomes NULL
if (index && f >= 0) { if (index && f >= 0) {
for (int i = 0; i <= MAXINDEXCATCHUP && (Index < 0 || Index >= last); i++) { for (int i = 0; i <= MAXINDEXCATCHUP && (Index < 0 || Index >= last); i++) {
struct stat buf; struct stat buf;
@ -856,7 +857,7 @@ bool cIndexFile::CatchUp(int Index)
// apparently the index file is not being written any more // apparently the index file is not being written any more
close(f); close(f);
f = -1; f = -1;
return false; break;
} }
int newLast = buf.st_size / sizeof(tIndex) - 1; int newLast = buf.st_size / sizeof(tIndex) - 1;
if (newLast > last) { if (newLast > last) {
@ -889,13 +890,12 @@ bool cIndexFile::CatchUp(int Index)
} }
else else
LOG_ERROR_STR(fileName); LOG_ERROR_STR(fileName);
if (Index >= last) if (Index < last)
sleep(1); break;
else sleep(1);
return true;
} }
} }
return false; return index != NULL;
} }
bool cIndexFile::Write(uchar PictureType, uchar FileNumber, int FileOffset) bool cIndexFile::Write(uchar PictureType, uchar FileNumber, int FileOffset)
@ -915,8 +915,7 @@ bool cIndexFile::Write(uchar PictureType, uchar FileNumber, int FileOffset)
bool cIndexFile::Get(int Index, uchar *FileNumber, int *FileOffset, uchar *PictureType, int *Length) bool cIndexFile::Get(int Index, uchar *FileNumber, int *FileOffset, uchar *PictureType, int *Length)
{ {
if (index) { if (CatchUp(Index)) {
CatchUp(Index);
if (Index >= 0 && Index < last) { if (Index >= 0 && Index < last) {
*FileNumber = index[Index].number; *FileNumber = index[Index].number;
*FileOffset = index[Index].offset; *FileOffset = index[Index].offset;
@ -938,8 +937,7 @@ bool cIndexFile::Get(int Index, uchar *FileNumber, int *FileOffset, uchar *Pictu
int cIndexFile::GetNextIFrame(int Index, bool Forward, uchar *FileNumber, int *FileOffset, int *Length, bool StayOffEnd) int cIndexFile::GetNextIFrame(int Index, bool Forward, uchar *FileNumber, int *FileOffset, int *Length, bool StayOffEnd)
{ {
if (index) { if (CatchUp()) {
CatchUp();
int d = Forward ? 1 : -1; int d = Forward ? 1 : -1;
for (;;) { for (;;) {
Index += d; Index += d;
@ -976,8 +974,7 @@ int cIndexFile::GetNextIFrame(int Index, bool Forward, uchar *FileNumber, int *F
int cIndexFile::Get(uchar FileNumber, int FileOffset) int cIndexFile::Get(uchar FileNumber, int FileOffset)
{ {
if (index) { if (CatchUp()) {
CatchUp();
//TODO implement binary search! //TODO implement binary search!
int i; int i;
for (i = 0; i < last; i++) { for (i = 0; i < last; i++) {