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openmpi/opal/util/stacktrace.c
Ralph Castain 728a24c8ec After considerable patience and help with debugging/testing from Tim M and Jeff S, return a completed and pretty well tested patch of the IOF to the trunk. This commit includes the previously reverted r20074, r20068, and r20064, as well as changes to fix those commits.
Basically, the remaining problem turned out to be:

1. closing stdout/stderr during orte_finalize of mpirun

2. inadvertently setting up a write event on fd = -1

3. devising a scheme to more accurately track when the stdin write event was active vs closed so it only got released once

This passed prelim MTT testing by Jeff and Tim, but should soak for awhile before migrating to 1.3.

This commit was SVN r20106.

The following SVN revision numbers were found above:
  r20064 --> open-mpi/ompi@a07660aea8
  r20068 --> open-mpi/ompi@ec930d14a9
  r20074 --> open-mpi/ompi@2940309613
2008-12-10 20:40:47 +00:00

462 строки
14 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) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2008 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#include "opal/util/stacktrace.h"
#include "opal/mca/base/mca_base_param.h"
#include "opal/mca/backtrace/backtrace.h"
#include "opal/constants.h"
#ifndef _NSIG
#define _NSIG 32
#endif
#define HOSTFORMAT "[%s:%05d] "
static char stacktrace_hostname[64];
/**
* This function is being called as a signal-handler in response
* to a user-specified signal (e.g. SIGFPE or SIGSEGV).
* For Linux/Glibc, it then uses backtrace and backtrace_symbols
* to figure the current stack and then prints that out to stdout.
* Where available, the BSD libexecinfo is used to provide Linux/Glibc
* compatible backtrace and backtrace_symbols functions.
* Yes, printf and malloc are not signal-safe per se, but should be
* on Linux?
*
* @param signo with the signal number raised
* @param info with information regarding the reason/send of the signal
* @param p
*
* FIXME: Should distinguish for systems, which don't have siginfo...
*/
#if OMPI_WANT_PRETTY_PRINT_STACKTRACE && ! defined(__WINDOWS__)
static void show_stackframe (int signo, siginfo_t * info, void * p)
{
char print_buffer[1024];
char * tmp = print_buffer;
int size = sizeof (print_buffer);
int ret, traces_size;
char *si_code_str = "";
char **traces;
/* write out the footer information */
memset (print_buffer, 0, sizeof (print_buffer));
ret = snprintf(print_buffer, sizeof(print_buffer),
HOSTFORMAT "*** Process received signal ***\n",
stacktrace_hostname, getpid());
write(fileno(stderr), print_buffer, ret);
fflush(stderr);
/*
* Yes, we are doing printf inside a signal-handler.
* However, backtrace itself calls malloc (which may not be signal-safe,
v * under linux, printf and malloc are)
*
* We could use backtrace_symbols_fd and write directly into an
* filedescriptor, however, without formatting -- also this fd
* should be opened in a sensible way...
*/
memset (print_buffer, 0, sizeof (print_buffer));
#ifdef HAVE_STRSIGNAL
ret = snprintf (tmp, size, HOSTFORMAT "Signal: %s (%d)\n",
stacktrace_hostname, getpid(), strsignal(signo), signo);
#else
ret = snprintf (tmp, size, HOSTFORMAT "Signal: %d\n",
stacktrace_hostname, getpid(), signo);
#endif
size -= ret;
tmp += ret;
if (NULL != info) {
switch (signo)
{
case SIGILL:
switch (info->si_code)
{
#ifdef ILL_ILLOPC
case ILL_ILLOPC: si_code_str = "Illegal opcode"; break;
#endif
#ifdef ILL_ILLOPN
case ILL_ILLOPN: si_code_str = "Illegal operand"; break;
#endif
#ifdef ILL_ILLADR
case ILL_ILLADR: si_code_str = "Illegal addressing mode"; break;
#endif
#ifdef ILL_ILLTRP
case ILL_ILLTRP: si_code_str = "Illegal trap"; break;
#endif
#ifdef ILL_PRVOPC
case ILL_PRVOPC: si_code_str = "Privileged opcode"; break;
#endif
#ifdef ILL_PRVREG
case ILL_PRVREG: si_code_str = "Privileged register"; break;
#endif
#ifdef ILL_COPROC
case ILL_COPROC: si_code_str = "Coprocessor error"; break;
#endif
#ifdef ILL_BADSTK
case ILL_BADSTK: si_code_str = "Internal stack error"; break;
#endif
}
break;
case SIGFPE:
switch (info->si_code)
{
#ifdef FPE_INTDIV
case FPE_INTDIV: si_code_str = "Integer divide-by-zero"; break;
#endif
#ifdef FPE_INTOVF
case FPE_INTOVF: si_code_str = "Integer overflow"; break;
#endif
case FPE_FLTDIV: si_code_str = "Floating point divide-by-zero"; break;
case FPE_FLTOVF: si_code_str = "Floating point overflow"; break;
case FPE_FLTUND: si_code_str = "Floating point underflow"; break;
#ifdef FPE_FLTRES
case FPE_FLTRES: si_code_str = "Floating point inexact result"; break;
#endif
#ifdef FBE_FLTINV
case FPE_FLTINV: si_code_str = "Invalid floating point operation"; break;
#endif
#ifdef FPE_FLTSUB
case FPE_FLTSUB: si_code_str = "Subscript out of range"; break;
#endif
}
break;
case SIGSEGV:
switch (info->si_code)
{
#ifdef SEGV_MAPERR
case SEGV_MAPERR: si_code_str = "Address not mapped"; break;
#endif
#ifdef SEGV_ACCERR
case SEGV_ACCERR: si_code_str = "Invalid permissions"; break;
#endif
}
break;
case SIGBUS:
switch (info->si_code)
{
#ifdef BUS_ADRALN
case BUS_ADRALN: si_code_str = "Invalid address alignment"; break;
#endif
#ifdef BUSADRERR
case BUS_ADRERR: si_code_str = "Non-existent physical address"; break;
#endif
#ifdef BUS_OBJERR
case BUS_OBJERR: si_code_str = "Objet-specific hardware error"; break;
#endif
}
break;
case SIGTRAP:
switch (info->si_code)
{
#ifdef TRAP_BRKPT
case TRAP_BRKPT: si_code_str = "Process breakpoint"; break;
#endif
#ifdef TRAP_TRACE
case TRAP_TRACE: si_code_str = "Process trace trap"; break;
#endif
}
break;
case SIGCHLD:
switch (info->si_code)
{
#ifdef CLD_EXITED
case CLD_EXITED: si_code_str = "Child has exited"; break;
#endif
#ifdef CLD_KILLED
case CLD_KILLED: si_code_str = "Child has terminated abnormally and did not create a core file"; break;
#endif
#ifdef CLD_DUMPED
case CLD_DUMPED: si_code_str = "Child has terminated abnormally and created a core file"; break;
#endif
#ifdef CLD_WTRAPPED
case CLD_TRAPPED: si_code_str = "Traced child has trapped"; break;
#endif
#ifdef CLD_STOPPED
case CLD_STOPPED: si_code_str = "Child has stopped"; break;
#endif
#ifdef CLD_CONTINUED
case CLD_CONTINUED: si_code_str = "Stopped child has continued"; break;
#endif
}
break;
#ifdef SIGPOLL
case SIGPOLL:
switch (info->si_code)
{
#ifdef POLL_IN
case POLL_IN: si_code_str = "Data input available"; break;
#endif
#ifdef POLL_OUT
case POLL_OUT: si_code_str = "Output buffers available"; break;
#endif
#ifdef POLL_MSG
case POLL_MSG: si_code_str = "Input message available"; break;
#endif
#ifdef POLL_ERR
case POLL_ERR: si_code_str = "I/O error"; break;
#endif
#ifdef POLL_PRI
case POLL_PRI: si_code_str = "High priority input available"; break;
#endif
#ifdef POLL_HUP
case POLL_HUP: si_code_str = "Device disconnected"; break;
#endif
}
break;
#endif /* SIGPOLL */
default:
switch (info->si_code)
{
#ifdef SI_ASYNCNL
case SI_ASYNCNL: si_code_str = "SI_ASYNCNL"; break;
#endif
#ifdef SI_SIGIO
case SI_SIGIO: si_code_str = "Queued SIGIO"; break;
#endif
#ifdef SI_ASYNCIO
case SI_ASYNCIO: si_code_str = "Asynchronous I/O request completed"; break;
#endif
#ifdef SI_MESGQ
case SI_MESGQ: si_code_str = "Message queue state changed"; break;
#endif
case SI_TIMER: si_code_str = "Timer expiration"; break;
case SI_QUEUE: si_code_str = "Sigqueue() signal"; break;
case SI_USER: si_code_str = "User function (kill, sigsend, abort, etc.)"; break;
#ifdef SI_KERNEL
case SI_KERNEL: si_code_str = "Kernel signal"; break;
#endif
#ifdef SI_UNDEFINED
case SI_UNDEFINED: si_code_str = "Undefined code"; break;
#endif
}
}
/* print signal errno information */
if (0 != info->si_errno) {
ret = snprintf(tmp, size, HOSTFORMAT "Associated errno: %s (%d)\n",
stacktrace_hostname, getpid(),
strerror (info->si_errno), info->si_errno);
size -= ret;
tmp += ret;
}
ret = snprintf(tmp, size, HOSTFORMAT "Signal code: %s (%d)\n",
stacktrace_hostname, getpid(),
si_code_str, info->si_code);
size -= ret;
tmp += ret;
switch (signo)
{
case SIGILL:
case SIGFPE:
case SIGSEGV:
case SIGBUS:
{
ret = snprintf(tmp, size, HOSTFORMAT "Failing at address: %p\n",
stacktrace_hostname, getpid(), info->si_addr);
size -= ret;
tmp += ret;
break;
}
case SIGCHLD:
{
ret = snprintf(tmp, size, HOSTFORMAT "Sending PID: %d, Sending UID: %d, Status: %d\n",
stacktrace_hostname, getpid(),
info->si_pid, info->si_uid, info->si_status);
size -= ret;
tmp += ret;
break;
}
#ifdef SIGPOLL
case SIGPOLL:
{
#ifdef HAVE_SIGINFO_T_SI_FD
ret = snprintf(tmp, size, HOSTFORMAT "Band event: %ld, File Descriptor : %d\n",
stacktrace_hostname, getpid(), (long)info->si_band, info->si_fd);
#elif HAVE_SIGINFO_T_SI_BAND
ret = snprintf(tmp, size, HOSTFORMAT "Band event: %ld\n",
stacktrace_hostname, getpid(), (long)info->si_band);
#else
ret = 0;
#endif
size -= ret;
tmp += ret;
break;
}
#endif
}
} else {
ret = snprintf(tmp, size,
HOSTFORMAT "siginfo is NULL, additional information unavailable\n",
stacktrace_hostname, getpid());
size -= ret;
tmp += ret;
}
/* write out the signal information generated above */
write(fileno(stderr), print_buffer, sizeof(print_buffer)-size);
fflush(stderr);
/* print out the stack trace */
ret = opal_backtrace_buffer(&traces, &traces_size);
if (OPAL_SUCCESS == ret) {
int i;
/* since we have the opportunity, strip off the bottom two
function calls, which will be this function and
opa_backtrace_buffer(). */
for (i = 2 ; i < traces_size ; ++i) {
ret = snprintf(print_buffer, sizeof(print_buffer),
HOSTFORMAT "[%2d] %s\n",
stacktrace_hostname, getpid(), i - 2, traces[i]);
write(fileno(stderr), print_buffer, ret);
}
} else {
opal_backtrace_print(stderr);
}
/* write out the footer information */
memset (print_buffer, 0, sizeof (print_buffer));
ret = snprintf(print_buffer, sizeof(print_buffer),
HOSTFORMAT "*** End of error message ***\n",
stacktrace_hostname, getpid());
write(fileno(stderr), print_buffer, ret);
fflush(stderr);
}
#endif /* OMPI_WANT_PRETTY_PRINT_STACKTRACE && ! defined(__WINDOWS__) */
#if OMPI_WANT_PRETTY_PRINT_STACKTRACE && ! defined(__WINDOWS__)
void opal_stackframe_output(int stream)
{
int traces_size;
char **traces;
/* print out the stack trace */
if (OPAL_SUCCESS == opal_backtrace_buffer(&traces, &traces_size)) {
int i;
/* since we have the opportunity, strip off the bottom two
function calls, which will be this function and
opa_backtrace_buffer(). */
for (i = 2; i < traces_size; ++i) {
opal_output(stream, traces[i]);
}
} else {
opal_backtrace_print(stderr);
}
}
#endif /* OMPI_WANT_PRETTY_PRINT_STACKTRACE && ! defined(__WINDOWS__) */
/**
* Here we register the show_stackframe function for signals
* passed to OpenMPI by the mpi_signal-parameter passed to mpirun
* by the user.
*
* @returnvalue OPAL_SUCCESS
* @returnvalue OPAL_ERR_BAD_PARAM if the value in the signal-list
* is not a valid signal-number
*
*/
int opal_util_register_stackhandlers (void)
{
#if OMPI_WANT_PRETTY_PRINT_STACKTRACE && ! defined(__WINDOWS__)
struct sigaction act;
char * string_value;
char * tmp;
char * next;
int param, i;
gethostname(stacktrace_hostname, sizeof(stacktrace_hostname));
stacktrace_hostname[sizeof(stacktrace_hostname) - 1] = '\0';
/* to keep these somewhat readable, only print the machine name */
for (i = 0 ; i < (int)sizeof(stacktrace_hostname) ; ++i) {
if (stacktrace_hostname[i] == '.') {
stacktrace_hostname[i] = '\0';
break;
}
}
param = mca_base_param_find ("opal", NULL, "signal");
mca_base_param_lookup_string (param, &string_value);
memset(&act, 0, sizeof(act));
act.sa_sigaction = show_stackframe;
act.sa_flags = SA_SIGINFO;
#ifdef SA_ONESHOT
act.sa_flags |= SA_ONESHOT;
#else
act.sa_flags |= SA_RESETHAND;
#endif
for (tmp = next = string_value ;
next != NULL && *next != '\0';
tmp = next + 1)
{
int sig;
int ret;
sig = strtol (tmp, &next, 10);
/*
* If there is no sensible number in the string, exit.
* Similarly for any number which is not in the signal-number range
*/
if (((0 == sig) && (tmp == next)) || (0 > sig) || (_NSIG <= sig)) {
return OPAL_ERR_BAD_PARAM;
}
if ((next == NULL) || ((*next != ',') && (*next != '\0'))) {
return OPAL_ERR_BAD_PARAM;
}
ret = sigaction (sig, &act, NULL);
if (ret != 0) {
return OPAL_ERR_IN_ERRNO;
}
}
free(string_value);
#endif /* OMPI_WANT_PRETTY_PRINT_STACKTRACE && ! defined(__WINDOWS__) */
return OPAL_SUCCESS;
}