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/*
* SPDX-FileCopyrightText: 2017 Francis Deslauriers <francis.deslauriers@efficios.com>
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
/*
* The order of inclusion is important here: including sdt.h _before_ the probe
* declarations ensures that semaphore-protected SDT probes (which we don't support) are not
* generated. See SYSTEMTAP(2) for more details.
*/
/* clang-format off */
#include <sys/sdt.h>
#include "foobar_provider.h"
/* clang-format on */
#include "libfoo.h"
#include "sema.h"
#include <dlfcn.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
int main(int argc, char *argv[])
{
void *handle;
void (*bar_function)();
FOOBAR_TP1();
FOOBAR_TP2();
/*
* This SDT tracepoint has an argument. Argument extraction is not supported
* at the moment, but tracing of the tracepoint should work.
*/
FOOBAR_TP_WITH_ARG(42);
/* Call a function containing an SDT tracepoint in shared object. */
foo_function();
/*
* Load a shared object and call a function containing an SDT
* tracepoint
*/
handle = dlopen("libbar.so", RTLD_LAZY);
if (!handle) {
fprintf(stderr, "Can't dlopen libbar.so");
return -1;
}
bar_function = (void (*)()) dlsym(handle, "bar_function");
bar_function();
dlclose(handle);
/* This tracepoint has 2 call sites in this binary. */
FOOBAR_TP2();
/*
* This function is defined in libfoo and in libzzz. For a test, libzzz is
* LD_PRELOADed and should override this function.
*/
overridable_function();
/*
* This function is calling a SDT tracepoint that is guarded by a
* semaphore.
*/
sema_function();
return 0;
}
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