7dc9995955
I was running into where if a string in the argument list contains a printf escape sequence, we would segfault. In particular, I was using opal_output to print the environment and had something like: LESSOPEN=|/usr/bin/lesspipe.sh %s in my environment. So I called opal_output(0, "%s", environ[i]) and got a segfault because the fprintf tried to expand the %s in the environment variable This commit was SVN r12094.
717 строки
17 KiB
C
717 строки
17 KiB
C
/*
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* Copyright (c) 2004-2006 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) 2004-2006 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) 2004-2006 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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* $COPYRIGHT$
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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 <stdarg.h>
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#include <stdlib.h>
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#ifdef HAVE_SYSLOG_H
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#include <syslog.h>
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#endif
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#include <string.h>
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#include <fcntl.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#include "opal/util/opal_environ.h"
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#include "opal/util/output.h"
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#include "opal/threads/mutex.h"
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#include "opal/constants.h"
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/*
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* Private data
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*/
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static int verbose_stream = -1;
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static opal_output_stream_t verbose;
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static char *output_dir = NULL;
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static char *output_prefix = NULL;
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/*
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* Private functions
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*/
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static void construct(opal_object_t *stream);
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static int do_open(int output_id, opal_output_stream_t * lds);
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static int open_file(int i);
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static void free_descriptor(int output_id);
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static void output(int output_id, const char *format, va_list arglist);
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/*
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* Internal data structures and helpers for the generalized output
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* stream mechanism.
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*/
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struct output_desc_t
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{
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bool ldi_used;
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bool ldi_enabled;
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int ldi_verbose_level;
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bool ldi_syslog;
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int ldi_syslog_priority;
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#ifndef __WINDOWS__
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char *ldi_syslog_ident;
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#else
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HANDLE ldi_syslog_ident;
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#endif
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char *ldi_prefix;
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int ldi_prefix_len;
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bool ldi_stdout;
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bool ldi_stderr;
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bool ldi_file;
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bool ldi_file_want_append;
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char *ldi_file_suffix;
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int ldi_fd;
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int ldi_file_num_lines_lost;
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};
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typedef struct output_desc_t output_desc_t;
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#define OPAL_OUTPUT_MAX_STREAMS 32
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/*
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* Local state
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*/
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static bool initialized = false;
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static output_desc_t info[OPAL_OUTPUT_MAX_STREAMS];
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static char *temp_str = 0;
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static size_t temp_str_len = 0;
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static opal_mutex_t mutex;
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static bool syslog_opened = false;
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OBJ_CLASS_INSTANCE(opal_output_stream_t, opal_object_t, construct, NULL);
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/*
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* Setup the output stream infrastructure
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*/
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bool opal_output_init(void)
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{
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int i;
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char *str;
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char hostname[32];
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if (initialized) {
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return true;
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}
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OBJ_CONSTRUCT(&verbose, opal_output_stream_t);
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#if defined(__WINDOWS__)
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{
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WSADATA wsaData;
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WSAStartup( MAKEWORD(2,2), &wsaData );
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}
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#endif /* defined(__WINDOWS__) */
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gethostname(hostname, sizeof(hostname));
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verbose.lds_want_stderr = true;
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asprintf(&verbose.lds_prefix, "[%s:%05d] ", hostname, getpid());
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for (i = 0; i < OPAL_OUTPUT_MAX_STREAMS; ++i) {
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info[i].ldi_used = false;
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info[i].ldi_enabled = false;
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info[i].ldi_syslog = false;
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info[i].ldi_file = false;
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info[i].ldi_file_suffix = NULL;
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info[i].ldi_file_want_append = false;
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info[i].ldi_fd = -1;
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info[i].ldi_file_num_lines_lost = 0;
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}
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/* Initialize the mutex that protects the output */
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OBJ_CONSTRUCT(&mutex, opal_mutex_t);
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initialized = true;
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/* Set some defaults */
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asprintf(&output_prefix, "output-pid%d-", getpid());
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if (NULL != (str = getenv("TMPDIR"))) {
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output_dir = strdup(str);
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} else if (NULL != (str = getenv("TEMP"))) {
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output_dir = strdup(str);
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} else if (NULL != (str = getenv("TMP"))) {
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output_dir = strdup(str);
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} else if (NULL != (str = getenv("HOME"))) {
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output_dir = strdup(str);
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} else {
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output_dir = strdup(".");
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}
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/* Open the default verbose stream */
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verbose_stream = opal_output_open(&verbose);
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return true;
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}
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/*
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* Open a stream
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*/
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int opal_output_open(opal_output_stream_t * lds)
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{
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return do_open(-1, lds);
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}
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/*
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* Reset the parameters on a stream
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*/
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int opal_output_reopen(int output_id, opal_output_stream_t * lds)
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{
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return do_open(output_id, lds);
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}
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/*
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* Enable and disable outptu streams
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*/
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bool opal_output_switch(int output_id, bool enable)
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{
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bool ret = false;
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/* Setup */
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if (!initialized) {
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opal_output_init();
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}
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if (output_id >= 0 && output_id < OPAL_OUTPUT_MAX_STREAMS) {
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ret = info[output_id].ldi_enabled;
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info[output_id].ldi_enabled = enable;
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}
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return ret;
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}
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/*
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* Reopen all the streams; used during checkpoint/restart.
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*/
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void opal_output_reopen_all(void)
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{
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int i;
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opal_output_stream_t lds;
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for (i = 0; i < OPAL_OUTPUT_MAX_STREAMS; ++i) {
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/* scan till we find ldi_used == 0, which is the end-marker */
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if (!info[i].ldi_used) {
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break;
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}
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/*
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* set this to zero to ensure that opal_output_open will
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* return this same index as the output stream id
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*/
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info[i].ldi_used = false;
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lds.lds_want_syslog = info[i].ldi_syslog;
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lds.lds_syslog_priority = info[i].ldi_syslog_priority;
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lds.lds_syslog_ident = info[i].ldi_syslog_ident;
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lds.lds_prefix = info[i].ldi_prefix;
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lds.lds_want_stdout = info[i].ldi_stdout;
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lds.lds_want_stderr = info[i].ldi_stderr;
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lds.lds_want_file = (-1 == info[i].ldi_fd) ? false : true;
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/* open all streams in append mode */
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lds.lds_want_file_append = true;
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lds.lds_file_suffix = info[i].ldi_file_suffix;
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/*
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* call opal_output_open to open the stream. The return value
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* is guaranteed to be i. So we can ignore it.
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*/
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opal_output_open(&lds);
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}
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}
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/*
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* Close a stream
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*/
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void opal_output_close(int output_id)
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{
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int i;
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/* Setup */
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if (!initialized) {
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return;
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}
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/* If it's valid, used, enabled, and has an open file descriptor,
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* free the resources associated with the descriptor */
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OPAL_THREAD_LOCK(&mutex);
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if (output_id >= 0 && output_id < OPAL_OUTPUT_MAX_STREAMS &&
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info[output_id].ldi_used && info[output_id].ldi_enabled) {
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free_descriptor(output_id);
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/* If no one has the syslog open, we should close it */
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for (i = 0; i < OPAL_OUTPUT_MAX_STREAMS; ++i) {
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if (info[i].ldi_used && info[i].ldi_syslog) {
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break;
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}
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}
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#ifndef __WINDOWS__
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if (i >= OPAL_OUTPUT_MAX_STREAMS && syslog_opened) {
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closelog();
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}
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#else
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DeregisterEventSource(info[output_id].ldi_syslog_ident);
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#endif
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}
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/* Somewhat of a hack to free up the temp_str */
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if (NULL != temp_str) {
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free(temp_str);
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temp_str = NULL;
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temp_str_len = 0;
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}
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OPAL_THREAD_UNLOCK(&mutex);
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}
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/*
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* Main function to send output to a stream
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*/
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void opal_output(int output_id, const char *format, ...)
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{
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if (output_id >= 0 && output_id < OPAL_OUTPUT_MAX_STREAMS) {
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va_list arglist;
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va_start(arglist, format);
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output(output_id, format, arglist);
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va_end(arglist);
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}
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}
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/*
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* Send a message to a stream if the verbose level is high enough
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*/
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void opal_output_verbose(int level, int output_id, const char *format, ...)
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{
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if (output_id >= 0 && output_id < OPAL_OUTPUT_MAX_STREAMS &&
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info[output_id].ldi_verbose_level >= level) {
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va_list arglist;
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va_start(arglist, format);
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output(output_id, format, arglist);
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va_end(arglist);
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}
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}
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/*
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* Set the verbosity level of a stream
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*/
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void opal_output_set_verbosity(int output_id, int level)
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{
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if (output_id >= 0 && output_id < OPAL_OUTPUT_MAX_STREAMS) {
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info[output_id].ldi_verbose_level = level;
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}
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}
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/*
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* Control where output flies will go
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*/
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void opal_output_set_output_file_info(const char *dir,
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const char *prefix,
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char **olddir,
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char **oldprefix)
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{
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if (NULL != olddir) {
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*olddir = strdup(output_dir);
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}
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if (NULL != oldprefix) {
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*oldprefix = strdup(output_prefix);
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}
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if (NULL != dir) {
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free(output_dir);
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output_dir = strdup(dir);
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}
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if (NULL != prefix) {
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free(output_prefix);
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output_prefix = strdup(prefix);
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}
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}
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/*
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* Shut down the output stream system
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*/
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void opal_output_finalize(void)
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{
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if (initialized) {
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if (verbose_stream != -1) {
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opal_output_close(verbose_stream);
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}
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verbose_stream = -1;
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free (output_prefix);
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free (output_dir);
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OBJ_DESTRUCT(&verbose);
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OBJ_DESTRUCT(&mutex);
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}
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#if defined(__WINDOWS__)
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WSACleanup();
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#endif /* defined(__WINDOWS__) */
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}
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/************************************************************************/
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/*
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* Constructor
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*/
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static void construct(opal_object_t *obj)
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{
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opal_output_stream_t *stream = (opal_output_stream_t*) obj;
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stream->lds_verbose_level = 0;
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stream->lds_syslog_priority = 0;
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stream->lds_syslog_ident = NULL;
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stream->lds_prefix = NULL;
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stream->lds_is_debugging = false;
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stream->lds_want_syslog = false;
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stream->lds_want_stdout = false;
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stream->lds_want_stderr = false;
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stream->lds_want_file = false;
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stream->lds_want_file_append = false;
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stream->lds_file_suffix = NULL;
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}
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/*
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* Back-end of open() and reopen(). Necessary to have it as a
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* back-end function so that we can do the thread locking properly
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* (especially upon reopen).
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*/
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static int do_open(int output_id, opal_output_stream_t * lds)
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{
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int i;
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/* Setup */
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if (!initialized) {
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opal_output_init();
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}
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/* If output_id == -1, find an available stream, or return
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* OPAL_ERROR */
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if (-1 == output_id) {
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OPAL_THREAD_LOCK(&mutex);
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for (i = 0; i < OPAL_OUTPUT_MAX_STREAMS; ++i) {
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if (!info[i].ldi_used) {
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break;
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}
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}
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if (i >= OPAL_OUTPUT_MAX_STREAMS) {
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OPAL_THREAD_UNLOCK(&mutex);
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return OPAL_ERR_OUT_OF_RESOURCE;
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}
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}
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/* Otherwise, we're reopening, so we need to free all previous
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* resources, close files, etc. */
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else {
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free_descriptor(output_id);
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i = output_id;
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}
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/* Special case: if we got NULL for lds, then just use the default
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* verbose */
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if (NULL == lds) {
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lds = &verbose;
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}
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/* Got a stream -- now initialize it and open relevant outputs */
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info[i].ldi_used = true;
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if (-1 == output_id) {
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OPAL_THREAD_UNLOCK(&mutex);
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}
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info[i].ldi_enabled = lds->lds_is_debugging ?
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(bool) OMPI_ENABLE_DEBUG : true;
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info[i].ldi_verbose_level = lds->lds_verbose_level;
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info[i].ldi_syslog = lds->lds_want_syslog;
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if (lds->lds_want_syslog) {
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#ifndef __WINDOWS__
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if (NULL != lds->lds_syslog_ident) {
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info[i].ldi_syslog_ident = strdup(lds->lds_syslog_ident);
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openlog(lds->lds_syslog_ident, LOG_PID, LOG_USER);
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} else {
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info[i].ldi_syslog_ident = NULL;
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openlog("opal", LOG_PID, LOG_USER);
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}
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#else
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if (NULL == (info[i].ldi_syslog_ident =
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RegisterEventSource(NULL, TEXT("opal: ")))) {
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/* handle the error */
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return OPAL_ERROR;
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}
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#endif
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syslog_opened = true;
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info[i].ldi_syslog_priority = lds->lds_syslog_priority;
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}
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if (NULL != lds->lds_prefix) {
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info[i].ldi_prefix = strdup(lds->lds_prefix);
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info[i].ldi_prefix_len = (int)strlen(lds->lds_prefix);
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} else {
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info[i].ldi_prefix = NULL;
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info[i].ldi_prefix_len = 0;
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}
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info[i].ldi_stdout = lds->lds_want_stdout;
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info[i].ldi_stderr = lds->lds_want_stderr;
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info[i].ldi_fd = -1;
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info[i].ldi_file = lds->lds_want_file;
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info[i].ldi_file_suffix = (NULL == lds->lds_file_suffix) ? NULL :
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strdup(lds->lds_file_suffix);
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info[i].ldi_file_want_append = lds->lds_want_file_append;
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info[i].ldi_file_num_lines_lost = 0;
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/* Don't open a file in the session directory now -- do that lazily
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* so that if there's no output, we don't have an empty file */
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return i;
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}
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static int open_file(int i)
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{
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int flags;
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char *filename;
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/* Setup the filename and open flags */
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if (NULL != output_dir) {
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filename = (char *) malloc(MAXPATHLEN);
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if (NULL == filename) {
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return OPAL_ERR_OUT_OF_RESOURCE;
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}
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strcpy(filename, output_dir);
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strcat(filename, "/");
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if (NULL != output_prefix) {
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strcat(filename, output_prefix);
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}
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if (info[i].ldi_file_suffix != NULL) {
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strcat(filename, info[i].ldi_file_suffix);
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} else {
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info[i].ldi_file_suffix = NULL;
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strcat(filename, "output.txt");
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}
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flags = O_CREAT | O_RDWR;
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if (!info[i].ldi_file_want_append) {
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flags |= O_TRUNC;
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}
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/* Actually open the file */
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info[i].ldi_fd = open(filename, flags, 0644);
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if (-1 == info[i].ldi_fd) {
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info[i].ldi_used = false;
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return OPAL_ERR_IN_ERRNO;
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}
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/* Make the file be close-on-exec to prevent child inheritance
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* problems */
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|
|
|
#ifndef __WINDOWS__
|
|
/* TODO: Need to find out the equivalent in windows */
|
|
fcntl(info[i].ldi_fd, F_SETFD, 1);
|
|
#endif
|
|
|
|
free(filename);
|
|
}
|
|
|
|
/* Return successfully even if the session dir did not exist yet;
|
|
* we'll try opening it later */
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|
|
|
|
|
|
/*
|
|
* Free all the resources associated with a descriptor.
|
|
*/
|
|
static void free_descriptor(int output_id)
|
|
{
|
|
output_desc_t *ldi;
|
|
|
|
if (output_id >= 0 && output_id < OPAL_OUTPUT_MAX_STREAMS &&
|
|
info[output_id].ldi_used && info[output_id].ldi_enabled) {
|
|
ldi = &info[output_id];
|
|
|
|
if (-1 != ldi->ldi_fd) {
|
|
close(ldi->ldi_fd);
|
|
}
|
|
ldi->ldi_used = false;
|
|
|
|
/* If we strduped a prefix, suffix, or syslog ident, free it */
|
|
|
|
if (NULL != ldi->ldi_prefix) {
|
|
free(ldi->ldi_prefix);
|
|
}
|
|
ldi->ldi_prefix = NULL;
|
|
|
|
if (NULL != ldi->ldi_file_suffix) {
|
|
free(ldi->ldi_file_suffix);
|
|
}
|
|
ldi->ldi_file_suffix = NULL;
|
|
|
|
#ifndef __WINDOWS__
|
|
if (NULL != ldi->ldi_syslog_ident) {
|
|
free(ldi->ldi_syslog_ident);
|
|
}
|
|
ldi->ldi_syslog_ident = NULL;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Do the actual output. Take a va_list so that we can be called from
|
|
* multiple different places, even functions that took "..." as input
|
|
* arguments.
|
|
*/
|
|
static void output(int output_id, const char *format, va_list arglist)
|
|
{
|
|
size_t len, total_len;
|
|
bool want_newline = false;
|
|
char *str;
|
|
output_desc_t *ldi;
|
|
|
|
/* Setup */
|
|
|
|
if (!initialized) {
|
|
opal_output_init();
|
|
}
|
|
|
|
/* If it's valid, used, and enabled, output */
|
|
|
|
if (output_id >= 0 && output_id < OPAL_OUTPUT_MAX_STREAMS &&
|
|
info[output_id].ldi_used && info[output_id].ldi_enabled) {
|
|
ldi = &info[output_id];
|
|
|
|
/* Make the formatted string */
|
|
|
|
OPAL_THREAD_LOCK(&mutex);
|
|
vasprintf(&str, format, arglist);
|
|
total_len = len = strlen(str);
|
|
if ('\n' != str[len - 1]) {
|
|
want_newline = true;
|
|
++total_len;
|
|
}
|
|
if (NULL != ldi->ldi_prefix) {
|
|
total_len += strlen(ldi->ldi_prefix);
|
|
}
|
|
if (temp_str_len < total_len + want_newline) {
|
|
if (NULL != temp_str) {
|
|
free(temp_str);
|
|
}
|
|
temp_str = (char *) malloc(total_len * 2);
|
|
temp_str_len = total_len * 2;
|
|
}
|
|
if (NULL != ldi->ldi_prefix) {
|
|
if (want_newline) {
|
|
snprintf(temp_str, temp_str_len, "%s%s\n", ldi->ldi_prefix,
|
|
str);
|
|
} else {
|
|
snprintf(temp_str, temp_str_len, "%s%s", ldi->ldi_prefix,
|
|
str);
|
|
}
|
|
} else {
|
|
if (want_newline) {
|
|
snprintf(temp_str, temp_str_len, "%s\n", str);
|
|
} else {
|
|
snprintf(temp_str, temp_str_len, "%s", str);
|
|
}
|
|
}
|
|
|
|
/* Syslog output */
|
|
|
|
if (ldi->ldi_syslog) {
|
|
|
|
#ifndef __WINDOWS__
|
|
syslog(ldi->ldi_syslog_priority, str);
|
|
#endif
|
|
}
|
|
|
|
/* stdout output */
|
|
|
|
if (ldi->ldi_stdout) {
|
|
write(fileno(stdout), temp_str, strlen(temp_str));
|
|
fflush(stdout);
|
|
}
|
|
|
|
/* stderr output */
|
|
|
|
if (ldi->ldi_stderr) {
|
|
write(fileno(stderr),temp_str, strlen(temp_str));
|
|
fflush(stderr);
|
|
}
|
|
|
|
/* File output -- first check to see if the file opening was
|
|
* delayed. If so, try to open it. If we failed to open it,
|
|
* then just discard (there are big warnings in the
|
|
* opal_output.h docs about this!). */
|
|
|
|
if (ldi->ldi_file) {
|
|
if (ldi->ldi_fd == -1) {
|
|
if (OPAL_SUCCESS != open_file(output_id)) {
|
|
++ldi->ldi_file_num_lines_lost;
|
|
} else if (ldi->ldi_file_num_lines_lost > 0) {
|
|
char buffer[BUFSIZ];
|
|
memset(buffer, 0, BUFSIZ);
|
|
snprintf(buffer, BUFSIZ - 1,
|
|
"[WARNING: %d lines lost because the Open MPI process session directory did\n not exist when opal_output() was invoked]\n",
|
|
ldi->ldi_file_num_lines_lost);
|
|
write(ldi->ldi_fd, buffer, strlen(buffer));
|
|
ldi->ldi_file_num_lines_lost = 0;
|
|
}
|
|
}
|
|
if (ldi->ldi_fd != -1) {
|
|
write(ldi->ldi_fd, temp_str, total_len);
|
|
}
|
|
}
|
|
OPAL_THREAD_UNLOCK(&mutex);
|
|
|
|
free(str);
|
|
}
|
|
}
|