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>
55 строки
1.5 KiB
C
55 строки
1.5 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2006 The Regents of the University of California.
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* All rights reserved.
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* Copyright (c) 2006 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2017 IBM Corporation. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "opal_config.h"
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#include <stdio.h>
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#include <ucontext.h>
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#include "opal/constants.h"
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#include "opal/mca/backtrace/backtrace.h"
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int
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opal_backtrace_print(FILE *file, char *prefix, int strip)
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{
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int fd = opal_stacktrace_output_fileno;
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if( NULL != file ) {
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fd = fileno(file);
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}
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printstack(fd);
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return OPAL_SUCCESS;
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}
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int
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opal_backtrace_buffer(char ***message_out, int *len_out)
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{
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*message_out = NULL;
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*len_out = 0;
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/* BWB - I think we can implement this in a similar way that
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printstack is implemented. I just don't have time right
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now. */
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return OPAL_ERR_NOT_IMPLEMENTED;
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}
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