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+# Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
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+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005
+# Free Software Foundation, Inc.
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+# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005
+# Free Software Foundation, Inc.
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+# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
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+[# Always define AMTAR for backward compatibility.
+AM_MISSING_PROG([AMTAR], [tar])
+m4_if([$1], [v7],
+ [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],
+ [m4_case([$1], [ustar],, [pax],,
+ [m4_fatal([Unknown tar format])])
+AC_MSG_CHECKING([how to create a $1 tar archive])
+# Loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
+_am_tools=${am_cv_prog_tar_$1-$_am_tools}
+# Do not fold the above two line into one, because Tru64 sh and
+# Solaris sh will not grok spaces in the rhs of `-'.
+for _am_tool in $_am_tools
+do
+ case $_am_tool in
+ gnutar)
+ for _am_tar in tar gnutar gtar;
+ do
+ AM_RUN_LOG([$_am_tar --version]) && break
+ done
+ am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
+ am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
+ am__untar="$_am_tar -xf -"
+ ;;
+ plaintar)
+ # Must skip GNU tar: if it does not support --format= it doesn't create
+ # ustar tarball either.
+ (tar --version) >/dev/null 2>&1 && continue
+ am__tar='tar chf - "$$tardir"'
+ am__tar_='tar chf - "$tardir"'
+ am__untar='tar xf -'
+ ;;
+ pax)
+ am__tar='pax -L -x $1 -w "$$tardir"'
+ am__tar_='pax -L -x $1 -w "$tardir"'
+ am__untar='pax -r'
+ ;;
+ cpio)
+ am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
+ am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
+ am__untar='cpio -i -H $1 -d'
+ ;;
+ none)
+ am__tar=false
+ am__tar_=false
+ am__untar=false
+ ;;
+ esac
+
+ # If the value was cached, stop now. We just wanted to have am__tar
+ # and am__untar set.
+ test -n "${am_cv_prog_tar_$1}" && break
+
+ # tar/untar a dummy directory, and stop if the command works
+ rm -rf conftest.dir
+ mkdir conftest.dir
+ echo GrepMe > conftest.dir/file
+ AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+ rm -rf conftest.dir
+ if test -s conftest.tar; then
+ AM_RUN_LOG([$am__untar <conftest.tar])
+ grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
+ fi
+done
+rm -rf conftest.dir
+
+AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
+AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+AC_SUBST([am__tar])
+AC_SUBST([am__untar])
+]) # _AM_PROG_TAR
+
--- /dev/null
+/*--------------------------------------------------------------------
+ * ps_status.c
+ *
+ * Routines to support changing the ps display of PostgreSQL backends
+ * to contain some useful information. Mechanism differs wildly across
+ * platforms.
+ *
+ * $PostgreSQL: pgsql/src/backend/utils/misc/ps_status.c,v 1.33 2006/10/04 00:30:04 momjian Exp $
+ *
+ * Copyright (c) 2000-2006, PostgreSQL Global Development Group
+ * various details abducted from various places
+ *--------------------------------------------------------------------
+ */
+
+#include <unistd.h>
+#ifdef HAVE_SYS_PSTAT_H
+#include <sys/pstat.h> /* for HP-UX */
+#endif
+#ifdef HAVE_PS_STRINGS
+#include <machine/vmparam.h> /* for old BSD */
+#include <sys/exec.h>
+#endif
+#if defined(__darwin__)
+#include <crt_externs.h>
+#endif
+
+#include "pool.h"
+#include <stdlib.h>
+#include <string.h>
+
+extern char **environ;
+bool update_process_title = true;
+
+
+/*
+ * Alternative ways of updating ps display:
+ *
+ * PS_USE_SETPROCTITLE
+ * use the function setproctitle(const char *, ...)
+ * (newer BSD systems)
+ * PS_USE_PSTAT
+ * use the pstat(PSTAT_SETCMD, )
+ * (HPUX)
+ * PS_USE_PS_STRINGS
+ * assign PS_STRINGS->ps_argvstr = "string"
+ * (some BSD systems)
+ * PS_USE_CHANGE_ARGV
+ * assign argv[0] = "string"
+ * (some other BSD systems)
+ * PS_USE_CLOBBER_ARGV
+ * write over the argv and environment area
+ * (most SysV-like systems)
+ * PS_USE_WIN32
+ * push the string out as the name of a Windows event
+ * PS_USE_NONE
+ * don't update ps display
+ * (This is the default, as it is safest.)
+ */
+#if defined(HAVE_SETPROCTITLE)
+#define PS_USE_SETPROCTITLE
+#elif defined(HAVE_PSTAT) && defined(PSTAT_SETCMD)
+#define PS_USE_PSTAT
+#elif defined(HAVE_PS_STRINGS)
+#define PS_USE_PS_STRINGS
+#elif (defined(BSD) || defined(__bsdi__) || defined(__hurd__)) && !defined(__darwin__)
+#define PS_USE_CHANGE_ARGV
+#elif defined(__linux__) || defined(_AIX) || defined(__sgi) || (defined(sun) && !defined(BSD)) || defined(ultrix) || defined(__ksr__) || defined(__osf__) || defined(__svr4__) || defined(__svr5__) || defined(__darwin__)
+#define PS_USE_CLOBBER_ARGV
+#elif defined(WIN32)
+#define PS_USE_WIN32
+#else
+#define PS_USE_NONE
+#endif
+
+
+/* Different systems want the buffer padded differently */
+#if defined(_AIX) || defined(__linux__) || defined(__svr4__)
+#define PS_PADDING '\0'
+#else
+#define PS_PADDING ' '
+#endif
+
+
+#ifndef PS_USE_CLOBBER_ARGV
+/* all but one options need a buffer to write their ps line in */
+#define PS_BUFFER_SIZE 256
+static char ps_buffer[PS_BUFFER_SIZE];
+static const size_t ps_buffer_size = PS_BUFFER_SIZE;
+#else /* PS_USE_CLOBBER_ARGV */
+static char *ps_buffer; /* will point to argv area */
+static size_t ps_buffer_size; /* space determined at run time */
+#endif /* PS_USE_CLOBBER_ARGV */
+
+static size_t ps_buffer_fixed_size; /* size of the constant prefix */
+
+/* save the original argv[] location here */
+static int save_argc;
+static char **save_argv;
+
+
+/*
+ * Call this early in startup to save the original argc/argv values.
+ * If needed, we make a copy of the original argv[] array to preserve it
+ * from being clobbered by subsequent ps_display actions.
+ *
+ * (The original argv[] will not be overwritten by this routine, but may be
+ * overwritten during init_ps_display. Also, the physical location of the
+ * environment strings may be moved, so this should be called before any code
+ * that might try to hang onto a getenv() result.)
+ */
+char **
+save_ps_display_args(int argc, char **argv)
+{
+ save_argc = argc;
+ save_argv = argv;
+
+#if defined(PS_USE_CLOBBER_ARGV)
+
+ /*
+ * If we're going to overwrite the argv area, count the available space.
+ * Also move the environment to make additional room.
+ */
+ {
+ char *end_of_area = NULL;
+ char **new_environ;
+ int i;
+
+ /*
+ * check for contiguous argv strings
+ */
+ for (i = 0; i < argc; i++)
+ {
+ if (i == 0 || end_of_area + 1 == argv[i])
+ end_of_area = argv[i] + strlen(argv[i]);
+ }
+
+ if (end_of_area == NULL) /* probably can't happen? */
+ {
+ ps_buffer = NULL;
+ ps_buffer_size = 0;
+ return argv;
+ }
+
+ /*
+ * check for contiguous environ strings following argv
+ */
+ for (i = 0; environ[i] != NULL; i++)
+ {
+ if (end_of_area + 1 == environ[i])
+ end_of_area = environ[i] + strlen(environ[i]);
+ }
+
+ ps_buffer = argv[0];
+ ps_buffer_size = end_of_area - argv[0];
+
+ /*
+ * move the environment out of the way
+ */
+ new_environ = (char **) malloc((i + 1) * sizeof(char *));
+ for (i = 0; environ[i] != NULL; i++)
+ new_environ[i] = strdup(environ[i]);
+ new_environ[i] = NULL;
+ environ = new_environ;
+ }
+#endif /* PS_USE_CLOBBER_ARGV */
+
+#if defined(PS_USE_CHANGE_ARGV) || defined(PS_USE_CLOBBER_ARGV)
+
+ /*
+ * If we're going to change the original argv[] then make a copy for
+ * argument parsing purposes.
+ *
+ * (NB: do NOT think to remove the copying of argv[], even though
+ * postmaster.c finishes looking at argv[] long before we ever consider
+ * changing the ps display. On some platforms, getopt() keeps pointers
+ * into the argv array, and will get horribly confused when it is
+ * re-called to analyze a subprocess' argument string if the argv storage
+ * has been clobbered meanwhile. Other platforms have other dependencies
+ * on argv[].
+ */
+ {
+ char **new_argv;
+ int i;
+
+ new_argv = (char **) malloc((argc + 1) * sizeof(char *));
+ for (i = 0; i < argc; i++)
+ new_argv[i] = strdup(argv[i]);
+ new_argv[argc] = NULL;
+
+#if defined(__darwin__)
+
+ /*
+ * Darwin (and perhaps other NeXT-derived platforms?) has a static
+ * copy of the argv pointer, which we may fix like so:
+ */
+ *_NSGetArgv() = new_argv;
+#endif
+
+ argv = new_argv;
+ }
+#endif /* PS_USE_CHANGE_ARGV or PS_USE_CLOBBER_ARGV */
+
+ return argv;
+}
+
+/*
+ * Call this once during subprocess startup to set the identification
+ * values. At this point, the original argv[] array may be overwritten.
+ */
+void
+init_ps_display(const char *username, const char *dbname,
+ const char *host_info, const char *initial_str)
+{
+#ifndef PS_USE_NONE
+ /* no ps display if you didn't call save_ps_display_args() */
+ if (!save_argv)
+ return;
+#ifdef PS_USE_CLOBBER_ARGV
+ /* If ps_buffer is a pointer, it might still be null */
+ if (!ps_buffer)
+ return;
+#endif
+
+ /*
+ * Overwrite argv[] to point at appropriate space, if needed
+ */
+
+#ifdef PS_USE_CHANGE_ARGV
+ save_argv[0] = ps_buffer;
+ save_argv[1] = NULL;
+#endif /* PS_USE_CHANGE_ARGV */
+
+#ifdef PS_USE_CLOBBER_ARGV
+ {
+ int i;
+
+ /* make extra argv slots point at end_of_area (a NUL) */
+ for (i = 1; i < save_argc; i++)
+ save_argv[i] = ps_buffer + ps_buffer_size;
+ }
+#endif /* PS_USE_CLOBBER_ARGV */
+
+ /*
+ * Make fixed prefix of ps display.
+ */
+
+#ifdef PS_USE_SETPROCTITLE
+
+ /*
+ * apparently setproctitle() already adds a `progname:' prefix to the ps
+ * line
+ */
+ snprintf(ps_buffer, ps_buffer_size,
+ "%s %s %s ",
+ username, dbname, host_info);
+#else
+ snprintf(ps_buffer, ps_buffer_size,
+ "pgpool: ");
+#endif
+
+ ps_buffer_fixed_size = strlen(ps_buffer);
+
+ set_ps_display(initial_str, true);
+#endif /* not PS_USE_NONE */
+}
+
+
+
+/*
+ * Call this to update the ps status display to a fixed prefix plus an
+ * indication of what you're currently doing passed in the argument.
+ */
+void
+set_ps_display(const char *activity, bool force)
+{
+
+ if (!force && !update_process_title)
+ return;
+
+#ifndef PS_USE_NONE
+
+#ifdef PS_USE_CLOBBER_ARGV
+ /* If ps_buffer is a pointer, it might still be null */
+ if (!ps_buffer)
+ return;
+#endif
+
+ /* Update ps_buffer to contain both fixed part and activity */
+ strlcpy(ps_buffer + ps_buffer_fixed_size, activity,
+ ps_buffer_size - ps_buffer_fixed_size);
+
+ /* Transmit new setting to kernel, if necessary */
+
+#ifdef PS_USE_SETPROCTITLE
+ setproctitle("%s", ps_buffer);
+#endif
+
+#ifdef PS_USE_PSTAT
+ {
+ union pstun pst;
+
+ pst.pst_command = ps_buffer;
+ pstat(PSTAT_SETCMD, pst, strlen(ps_buffer), 0, 0);
+ }
+#endif /* PS_USE_PSTAT */
+
+#ifdef PS_USE_PS_STRINGS
+ PS_STRINGS->ps_nargvstr = 1;
+ PS_STRINGS->ps_argvstr = ps_buffer;
+#endif /* PS_USE_PS_STRINGS */
+
+#ifdef PS_USE_CLOBBER_ARGV
+ {
+ int buflen;
+
+ /* pad unused memory */
+ buflen = strlen(ps_buffer);
+ memset(ps_buffer + buflen, PS_PADDING, ps_buffer_size - buflen);
+ }
+#endif /* PS_USE_CLOBBER_ARGV */
+
+#ifdef PS_USE_WIN32
+ {
+ /*
+ * Win32 does not support showing any changed arguments. To make it at
+ * all possible to track which backend is doing what, we create a
+ * named object that can be viewed with for example Process Explorer.
+ */
+ static HANDLE ident_handle = INVALID_HANDLE_VALUE;
+ char name[PS_BUFFER_SIZE + 32];
+
+ if (ident_handle != INVALID_HANDLE_VALUE)
+ CloseHandle(ident_handle);
+
+ sprintf(name, "pgident: %s", ps_buffer);
+
+ ident_handle = CreateEvent(NULL, TRUE, FALSE, name);
+ }
+#endif /* PS_USE_WIN32 */
+#endif /* not PS_USE_NONE */
+}
+
+
+/*
+ * Returns what's currently in the ps display, in case someone needs
+ * it. Note that only the activity part is returned. On some platforms
+ * the string will not be null-terminated, so return the effective
+ * length into *displen.
+ */
+const char *
+get_ps_display(int *displen)
+{
+#ifdef PS_USE_CLOBBER_ARGV
+ size_t offset;
+
+ /* If ps_buffer is a pointer, it might still be null */
+ if (!ps_buffer)
+ {
+ *displen = 0;
+ return "";
+ }
+
+ /* Remove any trailing spaces to offset the effect of PS_PADDING */
+ offset = ps_buffer_size;
+ while (offset > ps_buffer_fixed_size && ps_buffer[offset - 1] == PS_PADDING)
+ offset--;
+
+ *displen = offset - ps_buffer_fixed_size;
+#else
+ *displen = strlen(ps_buffer + ps_buffer_fixed_size);
+#endif
+
+ return ps_buffer + ps_buffer_fixed_size;
+}
projects / pgpool1.git / commitdiff