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Increased SLL_LENGTH in thread.c to better handle long caller lines, and enclosed logCaller with DEBUG_LOCKCALL to preserve memory in normal operation

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This commit is contained in:
Klaus Schmidinger 2017-06-08 08:29:45 +02:00
parent 38fed8c901
commit 79314ab98f
2 changed files with 10 additions and 2 deletions
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2
HISTORY
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@ -9110,3 +9110,5 @@ Video Disk Recorder Revision History
- Fixed uninitialized variable SdWatchdog in vdr.c (reported by Frank Neumann). - Fixed uninitialized variable SdWatchdog in vdr.c (reported by Frank Neumann).
- Fixed the locking sequence when starting an instant recording. - Fixed the locking sequence when starting an instant recording.
- Fixed L(ock) and U(nlock) indicators in cStateLockLog. - Fixed L(ock) and U(nlock) indicators in cStateLockLog.
- Increased SLL_LENGTH in thread.c to better handle long caller lines, and enclosed
logCaller with DEBUG_LOCKCALL to preserve memory in normal operation.

10
thread.c
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@ -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: thread.c 4.7 2017/06/08 08:22:10 kls Exp $ * $Id: thread.c 4.8 2017/06/08 08:27:32 kls Exp $
*/ */
#include "thread.h" #include "thread.h"
@ -557,7 +557,7 @@ cString cBackTrace::GetCaller(int Level, bool Mangled)
#ifdef DEBUG_LOCKSEQ #ifdef DEBUG_LOCKSEQ
#define SLL_SIZE 20 // the number of log entries #define SLL_SIZE 20 // the number of log entries
#define SLL_LENGTH 256 // the maximum length of log entries #define SLL_LENGTH 512 // the maximum length of log entries
#define SLL_MAX_LIST 9 // max. number of lists to log #define SLL_MAX_LIST 9 // max. number of lists to log
#define SLL_WRITE_FLAG 0x80000000 #define SLL_WRITE_FLAG 0x80000000
#define SLL_LOCK_FLAG 0x40000000 #define SLL_LOCK_FLAG 0x40000000
@ -570,7 +570,9 @@ private:
tThreadId logThreadIds[SLL_SIZE]; tThreadId logThreadIds[SLL_SIZE];
int logFlags[SLL_SIZE]; int logFlags[SLL_SIZE];
uint8_t logCounter[SLL_SIZE][SLL_MAX_LIST]; uint8_t logCounter[SLL_SIZE][SLL_MAX_LIST];
#ifdef DEBUG_LOCKCALL
char logCaller[SLL_SIZE][SLL_LENGTH]; char logCaller[SLL_SIZE][SLL_LENGTH];
#endif
int logIndex; int logIndex;
bool dumped; bool dumped;
void Dump(const char *Name, tThreadId ThreadId); void Dump(const char *Name, tThreadId ThreadId);
@ -584,7 +586,9 @@ cStateLockLog::cStateLockLog(void)
memset(logThreadIds, 0, sizeof(logThreadIds)); memset(logThreadIds, 0, sizeof(logThreadIds));
memset(logFlags, 0, sizeof(logFlags)); memset(logFlags, 0, sizeof(logFlags));
memset(logCounter, 0, sizeof(logCounter)); memset(logCounter, 0, sizeof(logCounter));
#ifdef DEBUG_LOCKCALL
memset(logCaller, 0, sizeof(logCaller)); memset(logCaller, 0, sizeof(logCaller));
#endif
logIndex = 0; logIndex = 0;
dumped = false; dumped = false;
} }
@ -614,10 +618,12 @@ void cStateLockLog::Dump(const char *Name, tThreadId ThreadId)
q += sprintf(q, " %c", c); q += sprintf(q, " %c", c);
} }
q += sprintf(q, " %c", Lock ? 'L' : 'U'); q += sprintf(q, " %c", Lock ? 'L' : 'U');
#ifdef DEBUG_LOCKCALL
if (*logCaller[logIndex]) { if (*logCaller[logIndex]) {
*q++ = ' '; *q++ = ' ';
strn0cpy(q, *cBackTrace::Demangle(logCaller[logIndex]), sizeof(msg) - (q - msg)); strn0cpy(q, *cBackTrace::Demangle(logCaller[logIndex]), sizeof(msg) - (q - msg));
} }
#endif
dsyslog("%s", msg); dsyslog("%s", msg);
} }
if (++logIndex >= SLL_SIZE) if (++logIndex >= SLL_SIZE)