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conditionally compile in mutex owner logging

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This commit is contained in:
Jeff Hill
2002-12-12 14:50:27 +00:00
parent e0c75e80bc
commit 2f2d4bfae7
1 changed files with 42 additions and 19 deletions
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61
src/libCom/osi/epicsMutex.cpp
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@@ -10,6 +10,14 @@
/* epicsMutex.c */
/* Author: Marty Kraimer and Jeff Hill Date: 03APR01 */
/*
* NOTES:
* 1) LOG_LAST_OWNER feature is normally commented out because
* it slows down the system at run time, anfd because its not
* currently safe to convert a thread id to a thread name because
* the thread may have exited making the thread id invalid.
*/
#include <new>
#include <stddef.h>
@@ -33,7 +41,9 @@ STATIC ELLLIST freeList;
struct epicsMutexParm {
ELLNODE node;
epicsMutexOSD * id;
epicsThreadId lastOwner;
# ifdef LOG_LAST_OWNER
epicsThreadId lastOwner;
# endif
const char *pFileName;
int lineno;
};
@@ -66,7 +76,9 @@ epicsMutexId epicsShareAPI epicsMutexOsiCreate(
pmutexNode = static_cast < epicsMutexParm * > ( calloc(1,sizeof(epicsMutexParm)) );
}
pmutexNode->id = id;
pmutexNode->lastOwner = 0;
# ifdef LOG_LAST_OWNER
pmutexNode->lastOwner = 0;
# endif
pmutexNode->pFileName = pFileName;
pmutexNode->lineno = lineno;
ellAdd(&mutexList,&pmutexNode->node);
@@ -103,9 +115,11 @@ epicsMutexLockStatus epicsShareAPI epicsMutexLock(
{
epicsMutexLockStatus status =
epicsMutexOsdLock(pmutexNode->id);
if ( status == epicsMutexLockOK ) {
pmutexNode->lastOwner = epicsThreadGetIdSelf();
}
# ifdef LOG_LAST_OWNER
if ( status == epicsMutexLockOK ) {
pmutexNode->lastOwner = epicsThreadGetIdSelf();
}
# endif
return status;
}
@@ -114,26 +128,35 @@ epicsMutexLockStatus epicsShareAPI epicsMutexTryLock(
{
epicsMutexLockStatus status =
epicsMutexOsdTryLock(pmutexNode->id);
if ( status == epicsMutexLockOK ) {
pmutexNode->lastOwner = epicsThreadGetIdSelf();
}
# ifdef LOG_LAST_OWNER
if ( status == epicsMutexLockOK ) {
pmutexNode->lastOwner = epicsThreadGetIdSelf();
}
# endif
return status;
}
void epicsShareAPI epicsMutexShow(
epicsMutexId pmutexNode, unsigned int level)
{
char threadName [255];
if ( pmutexNode->lastOwner ) {
epicsThreadGetName ( pmutexNode->lastOwner,
threadName, sizeof ( threadName ) );
}
else {
strcpy ( threadName, "<not used>" );
}
printf("epicsMutexId %p last owner \"%s\" source %s line %d\n",
(void *)pmutexNode, threadName,
pmutexNode->pFileName, pmutexNode->lineno);
# ifdef LOG_LAST_OWNER
char threadName [255];
if ( pmutexNode->lastOwner ) {
# error currently not safe to fetch name for stale thread
epicsThreadGetName ( pmutexNode->lastOwner,
threadName, sizeof ( threadName ) );
}
else {
strcpy ( threadName, "<not used>" );
}
printf("epicsMutexId %p last owner \"%s\" source %s line %d\n",
(void *)pmutexNode, threadName,
pmutexNode->pFileName, pmutexNode->lineno);
# else
printf("epicsMutexId %p source %s line %d\n",
(void *)pmutexNode, pmutexNode->pFileName,
pmutexNode->lineno);
# endif
if ( level > 0 ) {
epicsMutexOsdShow(pmutexNode->id,level-1);
}