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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2011 New Dream Network
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include "include/compat.h"
#include "common/errno.h"
#include "systest_runnable.h"
#include "systest_settings.h"
#include <errno.h>
#include <pthread.h>
#include <sstream>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#ifndef _WIN32
#include <sys/syscall.h>
#include <sys/wait.h>
#endif
#include <sys/types.h>
#include <unistd.h>
#include <atomic>
#include <limits>
#include <vector>
using std::ostringstream;
using std::string;
static pid_t do_gettid(void)
{
#if defined(__linux__)
return static_cast < pid_t >(syscall(SYS_gettid));
#elif defined(_WIN32)
return static_cast < pid_t >(GetCurrentThreadId());
#else
return static_cast < pid_t >(pthread_getthreadid_np());
#endif
}
std::atomic<unsigned> m_highest_id = { 0 };
SysTestRunnable::
SysTestRunnable(int argc, const char **argv)
: m_argc(0),
m_argv(NULL),
m_argv_orig(NULL)
{
m_started = false;
m_id = ++m_highest_id;
memset(&m_pthread, 0, sizeof(m_pthread));
update_id_str(false);
set_argv(argc, argv);
}
SysTestRunnable::
~SysTestRunnable()
{
set_argv(0, NULL);
}
const char* SysTestRunnable::
get_id_str(void) const
{
return m_id_str;
}
int SysTestRunnable::
start()
{
if (m_started) {
return -EDOM;
}
int ret;
bool use_threads = SysTestSettings::inst().use_threads();
if (use_threads) {
ret = pthread_create(&m_pthread, NULL, systest_runnable_pthread_helper,
static_cast<void*>(this));
if (ret)
return ret;
m_started = true;
} else {
#ifdef _WIN32
printf("Using separate processes is not supported on Windows.\n");
return -1;
#else
std::string err_msg;
ret = preforker.prefork(err_msg);
if (ret < 0) {
printf("prefork failed: %s\n", err_msg.c_str());
return ret;
}
if (preforker.is_child()) {
m_started = true;
void *retptr = systest_runnable_pthread_helper(static_cast<void*>(this));
preforker.exit((int)(uintptr_t)retptr);
} else {
m_started = true;
}
#endif
}
return 0;
}
std::string SysTestRunnable::
join()
{
if (!m_started) {
return "SysTestRunnable was never started.";
}
int ret;
bool use_threads = SysTestSettings::inst().use_threads();
if (use_threads) {
void *ptrretval;
ret = pthread_join(m_pthread, &ptrretval);
if (ret) {
ostringstream oss;
oss << "pthread_join failed with error " << ret;
return oss.str();
}
int retval = (int)(uintptr_t)ptrretval;
if (retval != 0) {
ostringstream oss;
oss << "ERROR " << retval;
return oss.str();
}
return "";
} else {
#ifdef _WIN32
return "Using separate processes is not supported on Windows.\n";
#else
std::string err_msg;
ret = preforker.parent_wait(err_msg);
return err_msg;
#endif
}
}
std::string SysTestRunnable::
run_until_finished(std::vector < SysTestRunnable * > &runnables)
{
int index = 0;
for (std::vector < SysTestRunnable * >::const_iterator r = runnables.begin();
r != runnables.end(); ++r) {
int ret = (*r)->start();
if (ret) {
ostringstream oss;
oss << "run_until_finished: got error " << ret
<< " when starting runnable " << index;
return oss.str();
}
++index;
}
for (std::vector < SysTestRunnable * >::const_iterator r = runnables.begin();
r != runnables.end(); ++r) {
std::string rstr = (*r)->join();
if (!rstr.empty()) {
ostringstream oss;
oss << "run_until_finished: runnable " << (*r)->get_id_str()
<< ": got error: " << rstr;
return oss.str();
}
}
printf("*******************************\n");
return "";
}
void *systest_runnable_pthread_helper(void *arg)
{
SysTestRunnable *st = static_cast < SysTestRunnable * >(arg);
st->update_id_str(true);
printf("%s: starting.\n", st->get_id_str());
int ret = st->run();
printf("%s: shutting down.\n", st->get_id_str());
return (void*)(uintptr_t)ret;
}
void SysTestRunnable::
update_id_str(bool started)
{
bool use_threads = SysTestSettings::inst().use_threads();
char extra[std::numeric_limits<int>::digits10 + 1];
extra[0] = '\0';
if (started) {
if (use_threads)
snprintf(extra, sizeof(extra), "_[%d]", do_gettid());
else
snprintf(extra, sizeof(extra), "_[%d]", getpid());
}
if (use_threads)
snprintf(m_id_str, SysTestRunnable::ID_STR_SZ, "thread_%d%s", m_id, extra);
else
snprintf(m_id_str, SysTestRunnable::ID_STR_SZ, "process_%d%s", m_id, extra);
}
// Copy argv so that if some fiend decides to modify it, it's ok.
void SysTestRunnable::
set_argv(int argc, const char **argv)
{
if (m_argv_orig != NULL) {
for (int i = 0; i < m_argc; ++i)
free((void*)(m_argv_orig[i]));
delete[] m_argv_orig;
m_argv_orig = NULL;
delete[] m_argv;
m_argv = NULL;
m_argc = 0;
}
if (argv == NULL)
return;
m_argc = argc;
m_argv_orig = new const char*[m_argc+1];
for (int i = 0; i < m_argc; ++i)
m_argv_orig[i] = strdup(argv[i]);
m_argv_orig[argc] = NULL;
m_argv = new const char*[m_argc+1];
for (int i = 0; i <= m_argc; ++i)
m_argv[i] = m_argv_orig[i];
}
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