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Add ABORT_ON_ASSERT flag to CONFIG_SITE

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This flag causes EPICS to call abort() on assertion failures rather than
suspend the executing thread. With the epicsThreadSuspendSelf() behavior,
an IOC can end up in a difficult to detect error state where one or more
threads has essentially crashed due to an assertion failure.

This also matches the C behavior of assert(3)
This commit is contained in:
Jeremy Lorelli
2024-11-12 17:13:16 -08:00
committed by Michael Davidsaver
parent 0186836449
commit 721e9cc3a7
3 changed files with 15 additions and 2 deletions
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3
configure/CONFIG_SITE_ENV
View File

@ -92,3 +92,6 @@ EPICS_IOC_LOG_FILE_NAME=
EPICS_IOC_LOG_FILE_COMMAND=
EPICS_IOC_LOG_FILE_LIMIT=1000000
# Set to 'YES' to call abort() rather than suspend the current thread
# when an assert() fails
EPICS_ABORT_ON_ASSERT=NO

1
modules/libcom/src/env/envDefs.h vendored
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@ -76,6 +76,7 @@ LIBCOM_API extern const ENV_PARAM EPICS_IOC_LOG_FILE_COMMAND;
LIBCOM_API extern const ENV_PARAM IOCSH_PS1;
LIBCOM_API extern const ENV_PARAM IOCSH_HISTSIZE;
LIBCOM_API extern const ENV_PARAM IOCSH_HISTEDIT_DISABLE;
LIBCOM_API extern const ENV_PARAM EPICS_ABORT_ON_ASSERT;
LIBCOM_API extern const ENV_PARAM *env_param_list[];
struct in_addr;

13
modules/libcom/src/osi/os/default/osdAssert.c
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@ -20,12 +20,14 @@
#include "epicsTime.h"
#include "cantProceed.h"
#include "epicsStackTrace.h"
#include "envDefs.h"
void epicsAssert (const char *pFile, const unsigned line,
const char *pExp, const char *pAuthorName)
{
epicsTimeStamp current;
int shouldAbort = 0;
errlogPrintf("\n\n\n"
"A call to 'assert(%s)'\n"
@ -50,6 +52,13 @@ void epicsAssert (const char *pFile, const unsigned line,
errlogPrintf("Please E-mail this message to %s or to tech-talk@aps.anl.gov\n",
pAuthorName);
errlogPrintf("Calling epicsThreadSuspendSelf()\n");
epicsThreadSuspendSelf ();
if (envGetBoolConfigParam(&EPICS_ABORT_ON_ASSERT, &shouldAbort) == 0 && shouldAbort) {
errlogPrintf("Calling abort()\n");
errlogFlush();
abort();
}
else {
errlogPrintf("Calling epicsThreadSuspendSelf()\n");
epicsThreadSuspendSelf ();
}
}