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bb368aad29
top-level * Makefile.def: Add gprofng module. * configure.ac: Add --enable-gprofng option. * src-release.sh: Add gprofng. * Makefile.in: Regenerate. * configure: Regenerate. * gprofng: New directory. binutils * MAINTAINERS: Add gprofng maintainer. * README-how-to-make-a-release: Add gprofng. include. * collectorAPI.h: New file. * libcollector.h: New file. * libfcollector.h: New file.
153 lines
3.5 KiB
C
153 lines
3.5 KiB
C
/* Copyright (C) 2021 Free Software Foundation, Inc.
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Contributed by Oracle.
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This file is part of GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <dlfcn.h>
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#include <errno.h>
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#include <string.h>
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#include "stopwatch.h"
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#define DYNSOROUTINE "so_cputime"
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#define DYNSONAME "./so_syn.so"
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/* callso -- dynamically link a shared object, and call a routine in it */
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#ifndef NONSHARED
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static void *so_object = NULL;
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static void closeso (void);
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int
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callso (int k)
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{
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int i;
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char buf[1024];
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char *p;
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char *q = DYNSONAME;
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int errnum;
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hrtime_t start = gethrtime ();
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hrtime_t vstart = gethrvtime ();
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/* Log the event */
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wlog ("start of callso", NULL);
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/* see if already linked */
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if (so_object != NULL)
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{
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fprintf (stderr, "Execution error -- callso: so_object already linked\n");
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return 0;
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}
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/* open the dynamic shared object */
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so_object = NULL;
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while (so_object == NULL)
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{
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so_object = dlopen (DYNSONAME, RTLD_NOW);
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if (so_object != NULL)
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break;
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p = dlerror ();
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if (q == NULL)
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q = "DYNSONAME";
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if (p == NULL)
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p = "dlerror() returns NULL";
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errnum = errno;
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if (errnum == EINTR)
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continue; /* retry */
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else
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{
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fprintf (stderr, "Execution error -- callso: dlopen of %s failed--%s, errno=%d (%s)\n",
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q, p, errnum, strerror (errnum));
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return (0);
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}
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}
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/* look up the routine name in it */
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int (*so_routine)() = (int (*)())dlsym (so_object, DYNSOROUTINE);
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if (so_routine == NULL)
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{
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fprintf (stderr, "Execution error -- callso: dlsym %s not found\n",
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DYNSOROUTINE);
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return (0);
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}
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/* invoke the routine */
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long long count = 0;
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do
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{
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i = (*so_routine)();
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count++;
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}
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while (start + testtime * 1e9 > gethrtime ());
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closeso ();
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sprintf (buf, "end of callso, %s returned %d", DYNSOROUTINE, i);
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wlog (buf, NULL);
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fprintf (stderr, " Performed %lld while-loop iterations\n", count);
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whrvlog ((gethrtime () - start), (gethrvtime () - vstart), "callso", NULL);
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return 0;
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}
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/* closeso -- close a DSO */
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void
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closeso (void)
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{
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/* Log the event */
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wlog ("start of closeso", NULL);
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/* ensure already linked */
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if (so_object == NULL)
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{
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fprintf (stderr, "Execution error -- closeso: so_object not linked\n");
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return;
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}
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/* close the dynamic shared object */
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int rc = dlclose (so_object);
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if (rc != 0)
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{
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fprintf (stderr, "Execution error -- closeso: dlclose() failed--%s\n",
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dlerror ());
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return;
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}
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/* clear the pointer */
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so_object = NULL;
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wlog ("end of closeso", NULL);
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return;
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}
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#else /* NONSHARED */
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int
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callso (int i)
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{
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return 0;
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}
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void
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closeso (void)
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{
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return;
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}
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#endif /* NONSHARED */
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