int eio_open(std::string fname, std::ifstream & in)
{
int target_big_endian = (endian_host_byte_order() == endian_big);
in.open(fname.c_str());
if(!in.is_open())
{
fatal("unable to open EIO file `%s'", fname.c_str());
}
std::string format_header("/* file_format: 2, file_version: 3, big_endian: 0 */");
std::string format_header_4("/* file_format: 2, file_version: 4, big_endian: 0 */");
std::string start_header("/* ** start checkpoint @ -1... */");
std::string buf;
getline(in,buf);
buf += '\n';
if(buf!=EIO_FILE_HEADER)
{
std::cerr << "Failed reading EIO file header, read: " << buf << std::endl;
std::cerr << "Should have read: " << EIO_FILE_HEADER << std::endl;
exit(-1);
}
getline(in,buf);
getline(in,buf);
if(buf!=format_header && buf!=format_header_4)
{
std::cerr << "Failed reading format header, read: " << buf << std::endl;
std::cerr << "Should have read: " << format_header << std::endl;
std::cerr << "or: " << format_header_4 << std::endl;
exit(-1);
}
int file_format, file_version, big_endian;
char c_buf;
in >> c_buf >> file_format >> c_buf >> file_version >> c_buf >> big_endian;
getline(in,buf);
if(!in.good())
{
fatal("could not read EIO file header");
}
getline(in,buf);
getline(in,buf);
if(buf!=start_header)
{
std::cerr << "Failed reading start header, read: " << buf << std::endl;
std::cerr << "Should have read: " << start_header << std::endl;
exit(-1);
}
getline(in,buf);
if(file_format != MD_EIO_FILE_FORMAT)
{
fatal("EIO file `%s' has incompatible format", fname.c_str());
}
if((file_version != EIO_FILE_VERSION) && (file_version != EIO_FILE_VERSION_NEW))
{
fatal("EIO file `%s' has incompatible version", fname.c_str());
}
if(!!big_endian != !!target_big_endian)
{
warn("endian of `%s' does not match host", fname.c_str());
warn("running with experimental cross-endian execution support");
warn("****************************************");
warn("**>> please check results carefully <<**");
warn("****************************************");
}
return file_version;
}
void logger::dolog_msg(const logger::msg& a_msg) {
try {
switch (a_msg.m_type) {
case payload_t::CHAR_FUN: {
assert(a_msg.m_fun.cf);
char buf[4096];
auto* end = buf + sizeof(buf);
char* p = format_header(a_msg, buf, end);
int n = (a_msg.m_fun.cf)(p, end - p);
if (p[n-1] == '\n') --p;
p = format_footer(a_msg, p+n, end);
m_sig_slot[level_to_signal_slot(a_msg.level())](
on_msg_delegate_t::invoker_type(a_msg, buf, p - buf));
if (fatal_kill_signal() && a_msg.level() == LEVEL_FATAL) {
m_abort = true;
dolog_fatal_msg(buf, p - buf);
}
break;
}
case payload_t::STR_FUN: {
assert(a_msg.m_fun.cf);
char pfx[256], sfx[256];
char* p = format_header(a_msg, pfx, pfx + sizeof(pfx));
char* q = format_footer(a_msg, sfx, sfx + sizeof(sfx));
auto res = (a_msg.m_fun.sf)(pfx, p - pfx, sfx, q - sfx);
m_sig_slot[level_to_signal_slot(a_msg.level())](
on_msg_delegate_t::invoker_type(a_msg, res.c_str(), res.size()));
if (fatal_kill_signal() && a_msg.level() == LEVEL_FATAL) {
m_abort = true;
dolog_fatal_msg(res.c_str(), res.size());
}
break;
}
case payload_t::STR: {
detail::basic_buffered_print<1024> buf;
char pfx[256], sfx[256];
char* p = format_header(a_msg, pfx, pfx + sizeof(pfx));
char* q = format_footer(a_msg, sfx, sfx + sizeof(sfx));
auto ps = p - pfx;
auto qs = q - sfx;
buf.reserve(a_msg.m_fun.str.size() + ps + qs + 1);
buf.sprint(pfx, ps);
auto& s = a_msg.m_fun.str;
// Remove trailing new lines
auto sz = int(s.size());
while (sz && s[sz-1] == '\n') --sz;
buf.sprint(s.c_str(), sz);
buf.sprint(sfx, qs);
m_sig_slot[level_to_signal_slot(a_msg.level())](
on_msg_delegate_t::invoker_type(a_msg, buf.str(), buf.size()));
if (fatal_kill_signal() && a_msg.level() == LEVEL_FATAL) {
m_abort = true;
dolog_fatal_msg(buf.c_str(), buf.size());
}
break;
}
}
} catch (std::runtime_error& e) {
if (m_error)
m_error(e.what());
else
throw;
}
}
int
main(int argc, char *argv[])
{
char *env_top;
char **preset_argv;
int preset_argc = 0;
void *mask;
int need_mini = 1;
struct statics statics;
globalstate *gstate;
/* get our name */
if (argc > 0)
{
if ((myname = strrchr(argv[0], '/')) == 0)
{
myname = argv[0];
}
else
{
myname++;
}
}
/* binary compatibility check */
#ifdef HAVE_UNAME
{
struct utsname uts;
if (uname(&uts) == 0)
{
if (strcmp(uts.machine, UNAME_HARDWARE) != 0)
{
fprintf(stderr, "%s: incompatible hardware platform\n",
myname);
exit(EX_UNAVAILABLE);
}
}
}
#endif
/* initialization */
gstate = (globalstate *)calloc(1, sizeof(globalstate));
gstate->statics = &statics;
time_mark(NULL);
/* preset defaults for various options */
gstate->show_usernames = Yes;
gstate->topn = DEFAULT_TOPN;
gstate->delay = DEFAULT_DELAY;
gstate->fulldraw = Yes;
gstate->use_color = Yes;
gstate->interactive = Maybe;
/* preset defaults for process selection */
gstate->pselect.idle = Yes;
gstate->pselect.system = No;
gstate->pselect.fullcmd = No;
gstate->pselect.command = NULL;
gstate->pselect.uid = -1;
gstate->pselect.mode = 0;
/* use a large buffer for stdout */
#ifdef HAVE_SETVBUF
setvbuf(stdout, stdoutbuf, _IOFBF, BUFFERSIZE);
#else
#ifdef HAVE_SETBUFFER
setbuffer(stdout, stdoutbuf, BUFFERSIZE);
#endif
#endif
/* get preset options from the environment */
if ((env_top = getenv("TOP")) != NULL)
{
preset_argv = argparse(env_top, &preset_argc);
preset_argv[0] = myname;
do_arguments(gstate, preset_argc, preset_argv);
}
/* process arguments */
do_arguments(gstate, argc, argv);
#ifdef ENABLE_COLOR
/* If colour has been turned on read in the settings. */
env_top = getenv("TOPCOLOURS");
if (!env_top)
{
env_top = getenv("TOPCOLORS");
}
/* must do something about error messages */
color_env_parse(env_top);
color_activate(gstate->use_color);
#endif
/* in order to support forward compatability, we have to ensure that
the entire statics structure is set to a known value before we call
machine_init. This way fields that a module does not know about
will retain their default values */
memzero((void *)&statics, sizeof(statics));
statics.boottime = -1;
/* call the platform-specific init */
if (machine_init(&statics) == -1)
{
exit(EX_SOFTWARE);
}
/* create a helper list of sort order names */
gstate->order_namelist = string_list(statics.order_names);
/* look up chosen sorting order */
if (gstate->order_name != NULL)
{
int i;
if (statics.order_names == NULL)
{
message_error(" This platform does not support arbitrary ordering");
}
else if ((i = string_index(gstate->order_name,
statics.order_names)) == -1)
{
message_error(" Sort order `%s' not recognized", gstate->order_name);
message_error(" Recognized sort orders: %s", gstate->order_namelist);
}
else
{
gstate->order_index = i;
}
}
/* initialize extensions */
init_username();
/* initialize termcap */
gstate->smart_terminal = screen_readtermcap(gstate->interactive);
/* determine interactive state */
if (gstate->interactive == Maybe)
{
gstate->interactive = smart_terminal;
}
/* if displays were not specified, choose an appropriate default */
if (gstate->displays == 0)
{
gstate->displays = gstate->smart_terminal ? Infinity: 1;
}
/* we don't need a mini display when delay is less than 2
seconds or when we are not on a smart terminal */
if (gstate->delay <= 1 || !smart_terminal)
{
need_mini = 0;
}
/* set constants for username/uid display */
if (gstate->show_usernames)
{
gstate->header_text = format_header("USERNAME");
gstate->get_userid = username;
}
else
{
gstate->header_text = format_header(" UID ");
gstate->get_userid = itoa7;
}
gstate->pselect.usernames = gstate->show_usernames;
/* initialize display */
if ((gstate->max_topn = display_init(&statics)) == -1)
{
fprintf(stderr, "%s: can't allocate sufficient memory\n", myname);
exit(EX_OSERR);
}
/* check for infinity and for overflowed screen */
if (gstate->topn == Infinity)
{
gstate->topn = INT_MAX;
}
else if (gstate->topn > gstate->max_topn)
{
#if 0
message_error(" This terminal can only display %d processes",
gstate->max_topn);
#endif
}
#ifdef ENABLE_COLOR
/* producing a list of color tags is easy */
if (gstate->show_tags)
{
color_dump(stdout);
exit(EX_OK);
}
#endif
/* hold all signals while we initialize the screen */
mask = hold_signals();
screen_init();
/* set the signal handlers */
set_signals();
/* longjmp re-entry point */
/* set the jump buffer for long jumps out of signal handlers */
if (setjmp(jmp_int) != 0)
{
/* this is where we end up after processing sigwinch or sigtstp */
/* tell display to resize its buffers, and get the new length */
if ((gstate->max_topn = display_resize()) == -1)
{
/* thats bad */
quit(EX_OSERR);
/*NOTREACHED*/
}
/* set up for a full redraw, and get the current line count */
gstate->fulldraw = Yes;
/* safe to release the signals now */
release_signals(mask);
}
else
{
/* release the signals */
release_signals(mask);
/* some systems require a warmup */
/* always do a warmup for batch mode */
if (gstate->interactive == 0 || statics.flags.warmup)
{
struct system_info system_info;
struct timeval timeout;
time_mark(&(gstate->now));
get_system_info(&system_info);
(void)get_process_info(&system_info, &gstate->pselect, 0);
timeout.tv_sec = 1;
timeout.tv_usec = 0;
select(0, NULL, NULL, NULL, &timeout);
/* if we've warmed up, then we can show good states too */
gstate->show_cpustates = Yes;
need_mini = 0;
}
}
/* main loop */
while ((gstate->displays == -1) || (--gstate->displays > 0))
{
do_display(gstate);
if (gstate->interactive)
{
if (need_mini)
{
do_minidisplay(gstate);
need_mini = 0;
}
do_command(gstate);
}
else
{
do_wait(gstate);
}
}
/* do one last display */
do_display(gstate);
quit(EX_OK);
/* NOTREACHED */
return 1; /* Keep compiler quiet. */
}
void logger::run()
{
utxx::signal_block block_signals(m_block_signals);
if (m_on_before_run)
m_on_before_run();
if (!m_ident.empty())
pthread_setname_np(pthread_self(), m_ident.c_str());
int event_val;
do
{
event_val = m_event.value();
//wakeup_result rc = wakeup_result::TIMEDOUT;
while (!m_abort && m_queue.empty()) {
m_event.wait(&m_wait_timeout, &event_val);
ASYNC_DEBUG_TRACE(
(" %s LOGGER awakened (res=%s, val=%d, futex=%d), abort=%d, head=%s\n",
timestamp::to_string().c_str(), to_string(rc).c_str(),
event_val, m_event.value(), m_abort,
m_queue.empty() ? "empty" : "data")
);
}
// When running with maximum priority, occasionally excessive use of
// sched_yield may use to system slowdown, so this option is
// configurable by m_sched_yield_us:
if (m_queue.empty() && m_sched_yield_us >= 0) {
time_val deadline(rel_time(0, m_sched_yield_us));
while (m_queue.empty()) {
if (m_abort)
goto DONE;
if (now_utc() > deadline)
break;
sched_yield();
}
}
// Get all pending items from the queue
for (auto* item = m_queue.pop_all(), *next=item; item; item = next) {
next = item->next();
try {
dolog_msg(item->data());
}
catch ( std::exception const& e )
{
// Unhandled error writing data to some destination
// Print error report to stderr (can't do anything better --
// the error happened in the m_on_error callback!)
const msg msg(LEVEL_INFO, "",
std::string("Fatal exception in logger"),
UTXX_LOG_SRCINFO);
detail::basic_buffered_print<1024> buf;
char pfx[256], sfx[256];
char* p = format_header(msg, pfx, pfx + sizeof(pfx));
char* q = format_footer(msg, sfx, sfx + sizeof(sfx));
auto ps = p - pfx;
auto qs = q - sfx;
buf.reserve(msg.m_fun.str.size() + ps + qs + 1);
buf.sprint(pfx, ps);
buf.print(msg.m_fun.str);
buf.sprint(sfx, qs);
std::cerr << buf.str() << std::endl;
m_abort = true;
// TODO: implement attempt to store transient messages to some
// other medium
// Free all pending messages
while (item) {
m_queue.free(item);
item = next;
next = item->next();
}
goto DONE;
}
m_queue.free(item);
item = next;
}
} while (!m_abort);
DONE:
if (!m_silent_finish) {
const msg msg(LEVEL_INFO, "", std::string("Logger thread finished"),
UTXX_LOG_SRCINFO);
try {
dolog_msg(msg);
}
catch (...) {}
}
if (m_on_after_run)
m_on_after_run();
}
