6d98559be9
- New MCA option: opal_stacktrace_output
- Specifies where the stack trace output stream goes.
- Accepts: none, stdout, stderr, file[:filename]
- Default filename 'stacktrace'
- Filename will be `stacktrace.PID`, or if VPID is available,
then the filename will be `stacktrace.VPID.PID`
- Update util/stacktrace to allow for different output avenues
including files. Previously this was hardcoded to 'stderr'.
- Since opal_backtrace_print needs to be signal safe, passing it a
FILE object that actually represents a file stream is difficult. This
is because we cannot open the file in the signal handler using
`fopen` (not safe), but have to use `open` (safe). Additionally, we
cannot use `fdopen` to convert the `int fd` to a `FILE *fh` since it
is also not signal safe.
- I did not want to break the backtrace.h API so I introduced a new
rule (documented in `backtrace.c`) that if the `FILE *file`
argument is `NULL` then look for the `opal_stacktrace_output_fileno`
variable to tell you which file descriptor to use for output.
Signed-off-by: Joshua Hursey <jhursey@us.ibm.com>
82 строки
2.0 KiB
C
82 строки
2.0 KiB
C
/*
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2005 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
* University of Stuttgart. All rights reserved.
|
|
* Copyright (c) 2004-2006 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* Copyright (c) 2011 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2017 IBM Corporation. All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "opal_config.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#ifdef HAVE_EXECINFO_H
|
|
#include <execinfo.h>
|
|
#endif
|
|
|
|
#include "opal/constants.h"
|
|
#include "opal/mca/backtrace/backtrace.h"
|
|
|
|
int
|
|
opal_backtrace_print(FILE *file, char *prefix, int strip)
|
|
{
|
|
int i, len;
|
|
int trace_size;
|
|
void * trace[32];
|
|
char buf[6];
|
|
int fd = opal_stacktrace_output_fileno;
|
|
|
|
if( NULL != file ) {
|
|
fd = fileno(file);
|
|
}
|
|
|
|
if (-1 == fd) {
|
|
return OPAL_ERR_BAD_PARAM;
|
|
}
|
|
|
|
trace_size = backtrace (trace, 32);
|
|
|
|
for (i = strip; i < trace_size; i++) {
|
|
if (NULL != prefix) {
|
|
write (fd, prefix, strlen (prefix));
|
|
}
|
|
len = snprintf (buf, sizeof(buf), "[%2d] ", i - strip);
|
|
write (fd, buf, len);
|
|
backtrace_symbols_fd (&trace[i], 1, fd);
|
|
}
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
|
|
int
|
|
opal_backtrace_buffer(char ***message_out, int *len_out)
|
|
{
|
|
int trace_size;
|
|
void * trace[32];
|
|
char ** funcs = (char **)NULL;
|
|
|
|
trace_size = backtrace (trace, 32);
|
|
funcs = backtrace_symbols (trace, trace_size);
|
|
|
|
*message_out = funcs;
|
|
*len_out = trace_size;
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|