static void
check_event(FAMConnection * fc)
{
int ret;
FAMEvent fe;
ret = FAMPending(fc);
if (ret < 0) {
fprintf(stderr, "FAMPending() failed\n");
exit(1);
}
while (ret > 0) {
ret = FAMNextEvent(fc, &fe);
if (ret < 0) {
fprintf(stderr, "FAMNextEvent() failed\n");
exit(1);
}
print_event(&fe);
ret = FAMPending(fc);
if (ret < 0) {
fprintf(stderr, "FAMPending() failed\n");
exit(1);
}
}
}
static void viewer_fam_input(viewer_t *viewer, int fd, GdkInputCondition condition)
{
FAMEvent fe;
while ( FAMPending(&(viewer->fc)) > 0 ) {
if ( FAMNextEvent(&(viewer->fc), &fe) < 0 ) {
fprintf(stderr, NAME ": WARNING: Failed to retrieve FAM event: %s\n", FamErrlist[FAMErrno]);
fprintf(stderr, NAME ": WARNING: Disabling file update detection.\n");
viewer_fam_close(viewer);
return;
}
switch ( fe.code ) {
case FAMDeleted:
case FAMMoved:
viewer_clear(viewer);
break;
case FAMChanged:
case FAMCreated:
viewer_follow(viewer, 0);
break;
default:
break;
}
}
}
static void* fhs_event_process(void *data)
{
struct fe_handler *feh = (struct fe_handler*)data;
FAMEvent fe;
FAMRequest fr;
FAMConnection fc;
char* root_path;
root_path = g_hash_table_lookup(feh->ohh->config, "root_path");
FAMOpen(&fc);
FAMMonitorDirectory(&fc, root_path, &fr, REQ_RES);
while(!feh->closing) {
/*
The old code is:
FAMNextEvent(&fc, &fe);
The new code is
if (1 == FAMPending(&fc)) {
FAMNextEvent(&fc, &fe);
}else continue;
In the old code, if this thread is processing FAMNextEvent and
then feh->closing is set by another thread, this thread is still
hung up. so the synchronized call is changed as asychronized call
(polling call) though I don't like this mode.
*/
if (1 == FAMPending(&fc)) {
FAMNextEvent(&fc, &fe);
}else continue;
if ((fe.userdata == REQ_RES) &&
((fe.code == FAMCreated) || (fe.code == FAMExists))) {
if (!IS_DIR(fe.filename))
fhs_event_add_resource(feh, fe.filename, &fe);
}else if ((fe.userdata == REQ_RDR) && (fe.code == FAMDeleted)) {
if (!IS_DIR(fe.filename))
fhs_event_remove_resource(feh, &fe);
else
printf("faint! why delete root path\n");
}else if (fe.userdata == REQ_RDR) {
if (((fe.code == FAMChanged) || (fe.code == FAMExists))&&
((!strcmp(fe.filename, "reading"))||
(!strcmp(fe.filename, "thres")))) {
fhs_event_sensor_update(feh, &fe);
}
}
}
FAMClose(&fc);
return 0;
}
gboolean
ves_icall_System_IO_FAMW_InternalFAMNextEvent (gpointer conn,
MonoString **filename,
gint *code,
gint *reqnum)
{
FAMEvent ev;
if (FAMNextEvent (conn, &ev) == 1) {
*filename = mono_string_new (mono_domain_get (), ev.filename);
*code = ev.code;
*reqnum = ev.fr.reqnum;
return TRUE;
}
return FALSE;
}
static void* fhs_event_process(void *data)
{
struct fe_handler *feh = (struct fe_handler*)data;
FAMEvent fe;
FAMRequest fr;
FAMConnection fc;
char* root_path;
#ifndef UNIT_TEST
root_path = g_hash_table_lookup(feh->ohh->config, "root_path");
#else
root_path = "/home/guorj/HPI/openhpi/src/plugins/simulator/test/resources";
#endif
FAMOpen(&fc);
FAMMonitorDirectory(&fc, root_path, &fr, (void*)req_res);
while(!feh->done) {
FAMNextEvent(&fc, &fe);
if ((fe.userdata == (void *)req_res) &&
((fe.code == FAMCreated) || (fe.code == FAMExists))) {
if (!IS_DIR(fe.filename))
fhs_event_add_resource(feh, fe.filename, &fe);
}else if ((fe.userdata == (void*) req_res) && (fe.code == FAMDeleted)) {
if (!IS_DIR(fe.filename))
fhs_event_remove_resource(feh, &fe);
else
printf("faint! why delete root path\n");
}else if (fe.userdata == (void *)req_rdr) {
if (((fe.code == FAMChanged) || (fe.code == FAMExists))&&
((!strcmp(fe.filename, "reading"))||
(!strcmp(fe.filename, "thres")))) {
fhs_event_sensor_update(feh, &fe);
}
}
}
FAMClose(&fc);
#if 0
free all resource id and rdr id;
#endif
return 0;
}
static int
printEvent(int no)
{
int ret;
FAMEvent fe;
char *data;
ret = FAMNextEvent(&(testState.fc), &fe);
if (ret < 0) {
fprintf(stderr, "event(s) line %d: FAMNextEvent failed\n", no);
return (-1);
}
testState.nb_events++;
if (fe.userdata == NULL)
data = "NULL";
else
data = fe.userdata;
printf("%d: %s %s: %s\n",
fe.fr.reqnum, fe.filename, codeName(fe.code), data);
return (0);
}
handler_t stat_cache_handle_fdevent(server *srv, void *_fce, int revent) {
size_t i;
stat_cache *sc = srv->stat_cache;
size_t events;
UNUSED(_fce);
/* */
if (revent & FDEVENT_IN) {
events = FAMPending(&sc->fam);
for (i = 0; i < events; i++) {
FAMEvent fe;
fam_dir_entry *fam_dir;
splay_tree *node;
int ndx, j;
FAMNextEvent(&sc->fam, &fe);
/* handle event */
switch(fe.code) {
case FAMChanged:
case FAMDeleted:
case FAMMoved:
/* if the filename is a directory remove the entry */
fam_dir = fe.userdata;
fam_dir->version++;
/* file/dir is still here */
if (fe.code == FAMChanged) break;
/* we have 2 versions, follow and no-follow-symlink */
for (j = 0; j < 2; j++) {
buffer_copy_string(sc->hash_key, fe.filename);
buffer_append_int(sc->hash_key, j);
ndx = hashme(sc->hash_key);
sc->dirs = splaytree_splay(sc->dirs, ndx);
node = sc->dirs;
if (node && (node->key == ndx)) {
int osize = splaytree_size(sc->dirs);
fam_dir_entry_free(&sc->fam, node->data);
sc->dirs = splaytree_delete(sc->dirs, ndx);
force_assert(osize - 1 == splaytree_size(sc->dirs));
}
}
break;
default:
break;
}
}
}
if (revent & FDEVENT_HUP) {
/* fam closed the connection */
fdevent_event_del(srv->ev, &(sc->fam_fcce_ndx), FAMCONNECTION_GETFD(&sc->fam));
fdevent_unregister(srv->ev, FAMCONNECTION_GETFD(&sc->fam));
FAMClose(&sc->fam);
}
return HANDLER_GO_ON;
}
/* event handler of all FAM events */
static gboolean on_fam_event( GIOChannel * channel,
GIOCondition cond,
gpointer user_data )
{
#ifdef USE_INOTIFY /* Linux inootify */
#define BUF_LEN (1024 * (sizeof (struct inotify_event) + 16))
char buf[ BUF_LEN ];
int i, len;
#else /* FAM|gamin */
FAMEvent evt;
#endif
VFSFileMonitor* monitor = NULL;
if ( cond & (G_IO_HUP | G_IO_ERR) )
{
disconnect_from_fam();
if ( g_hash_table_size ( monitor_hash ) > 0 )
{
/*
Disconnected from FAM server, but there are still monitors.
This may be caused by crash of FAM server.
So we have to reconnect to FAM server.
*/
connect_to_fam();
g_hash_table_foreach( monitor_hash, ( GHFunc ) reconnect_fam, NULL );
}
return TRUE; /* don't need to remove the event source since
it has been removed by disconnect_from_fam(). */
}
#ifdef USE_INOTIFY /* Linux inotify */
while ( ( len = read ( inotify_fd, buf, BUF_LEN ) ) < 0
&& errno == EINTR );
if ( len < 0 )
{
g_warning ( "Error reading inotify event: %s",
g_strerror ( errno ) );
/* goto error_cancel; */
return FALSE;
}
if ( len == 0 )
{
/*
* FIXME: handle this better?
*/
g_warning ( "Error reading inotify event: supplied buffer was too small" );
/* goto error_cancel; */
return FALSE;
}
i = 0;
while ( i < len )
{
struct inotify_event * ievent = ( struct inotify_event * ) & buf [ i ];
/* FIXME: 2 different paths can have the same wd because of link */
monitor = ( VFSFileMonitor* ) g_hash_table_find(
monitor_hash,
find_monitor,
GINT_TO_POINTER( ievent->wd ) );
if( G_LIKELY(monitor) )
{
const char* file_name;
file_name = ievent->len > 0 ? ievent->name : monitor->path;
/*
//MOD for debug output only
char* desc;
if ( ievent->mask & ( IN_CREATE | IN_MOVED_TO ) )
desc = "CREATE";
else if ( ievent->mask & ( IN_DELETE | IN_MOVED_FROM | IN_DELETE_SELF | IN_UNMOUNT ) )
desc = "DELETE";
else if ( ievent->mask & ( IN_MODIFY | IN_ATTRIB ) )
desc = "CHANGE";
if ( !strcmp( monitor->path, "/tmp" ) && g_str_has_prefix( file_name, "vte" ) )
{ } // due to current vte scroll problems creating and deleting massive numbers of
// /tmp/vte8CBO7V types of files, ignore these (creates feedback loop when
// spacefm is run in terminal because each printf triggers a scroll,
// which triggers another printf below, which triggers another file change)
// https://bugs.launchpad.net/ubuntu/+source/vte/+bug/778872
else
printf("inotify-event %s: %s///%s\n", desc, monitor->path, file_name);
//g_debug("inotify (%d) :%s", ievent->mask, file_name);
*/
dispatch_event( monitor,
translate_inotify_event( ievent->mask ),
file_name );
}
i += sizeof ( struct inotify_event ) + ievent->len;
}
#else /* FAM|gamin */
while ( FAMPending( &fam ) )
{
if ( FAMNextEvent( &fam, &evt ) > 0 )
{
monitor = ( VFSFileMonitor* ) evt.userdata;
switch ( evt.code )
{
case FAMCreated:
case FAMDeleted:
case FAMChanged:
/* FIXME: There exists a possibility that a file can accidentally become
a directory, and a directory can become a file when using chmod.
Should we delete original request, and create a new one when this happens?
*/
/* g_debug("FAM event(%d): %s", evt.code, evt.filename); */
/* Call the callback functions */
dispatch_event( monitor, evt.code, evt.filename );
break;
/* Other events are not supported */
default:
break;
}
}
}
#endif
return TRUE;
}
static gboolean
g_fam_file_monitor_callback (gint fd,
GIOCondition condition,
gpointer user_data)
{
gint64 now = g_source_get_time (fam_source);
g_mutex_lock (&fam_lock);
while (FAMPending (&fam_connection))
{
const gchar *child;
FAMEvent ev;
if (FAMNextEvent (&fam_connection, &ev) != 1)
{
/* The daemon died. We're in a really bad situation now
* because we potentially have a bunch of request structures
* outstanding which no longer make any sense to anyone.
*
* The best thing that we can do is do nothing. Notification
* won't work anymore for this process.
*/
g_mutex_unlock (&fam_lock);
g_warning ("Lost connection to FAM (file monitoring) service. Expect no further file monitor events.");
return FALSE;
}
/* We expect ev.filename to be a relative path for children in a
* monitored directory, and an absolute path for a monitored file
* or the directory itself.
*/
if (ev.filename[0] != '/')
child = ev.filename;
else
child = NULL;
switch (ev.code)
{
case FAMAcknowledge:
g_source_unref (ev.userdata);
break;
case FAMChanged:
g_file_monitor_source_handle_event (ev.userdata, G_FILE_MONITOR_EVENT_CHANGED, child, NULL, NULL, now);
break;
case FAMDeleted:
g_file_monitor_source_handle_event (ev.userdata, G_FILE_MONITOR_EVENT_DELETED, child, NULL, NULL, now);
break;
case FAMCreated:
g_file_monitor_source_handle_event (ev.userdata, G_FILE_MONITOR_EVENT_CREATED, child, NULL, NULL, now);
break;
default:
/* unknown type */
break;
}
}
g_mutex_unlock (&fam_lock);
return TRUE;
}
/**
* Process all pending events.
* Helper thread for the worker thread. Just there
* to process FAM events. Puts all events into the
* queue for the main worker.
*/
static void * processEvents(void * arg) {
DIC * cls = arg;
FAMEvent fe;
fd_set r;
fd_set w;
fd_set e;
int fd = cls->fc.fd;
int i;
cls->log(cls->logContext,
DOODLE_LOG_VERY_VERBOSE,
_("Event processing thread created.\n"));
while ( (0 == testShutdown()) &&
(cls->continueRunning) ) {
char * name;
FD_ZERO(&r);
FD_ZERO(&w);
FD_ZERO(&e);
FD_SET(fd, &r);
i = select(fd+1, &r, &w, &e, NULL);
if (i == -1) {
if (errno == EINTR)
continue;
cls->log(cls->logContext,
DOODLE_LOG_CRITICAL,
_("Call to '%s' failed: %s\n"),
"select",
strerror(errno));
}
if (!FD_ISSET(fd, &r))
continue;
if (! FAMPending(&cls->fc)) {
/* this should only happen if there was a problem with
select, and in this case we better add some artificial
delay (busy waiting) */
sleep(1);
continue;
}
MUTEX_LOCK(&cls->lock);
if (-1 == FAMNextEvent(&cls->fc, &fe)) {
cls->log(cls->logContext,
DOODLE_LOG_CRITICAL,
_("Call to '%s' failed: %s\n"),
"FAMNextEvent",
FamErrlist[FAMErrno]);
/* avoid fast, persistent errors */
sleep(1);
continue;
}
name = malloc(strlen(fe.filename) + strlen((char*) fe.userdata) + 2);
if (fe.filename[0] == '/') {
strcpy(name, fe.filename);
} else {
strcpy(name, (char*) fe.userdata);
if ( (strlen((char*)fe.userdata) > 0) &&
(((char*)fe.userdata)[strlen(fe.userdata)-1] != DIR_SEPARATOR) )
strcat(name, DIR_SEPARATOR_STR);
strcat(name, fe.filename);
}
/* never process the doodle database itself... */
if (0 == strncmp(name,
cls->ename,
strlen(cls->ename))) {
free(name);
MUTEX_UNLOCK(&cls->lock);
continue;
}
cls->log(cls->logContext,
DOODLE_LOG_INSANELY_VERBOSE,
"FAM EVENT (%d,%s,%s) on file '%s'.\n",
fe.code,
fe.userdata,
fe.filename,
name);
switch (fe.code) {
case FAMCreated:
case FAMChanged:
case FAMDeleted:
case FAMMoved:
case FAMAcknowledge:
case FAMExists:
case FAMEndExist:
GROW(cls->events,
cls->eventCount,
cls->eventCount+1);
cls->events[cls->eventCount-1] = strdup(name);
SEMAPHORE_UP(cls->signal);
break;
default:
break;
} /* end switch */
free(name);
MUTEX_UNLOCK(&cls->lock);
} /* if event */
cls->continueRunning = 0;
SEMAPHORE_UP(cls->signal);
return NULL;
}
- failwith("No file descriptors in pseudo-FAM");
+ caml_failwith("No file descriptors in pseudo-FAM");
return Val_unit;
#endif /* FAM_INOTIFY */
#else /* FAM_PSEUDO */
@@ -209,7 +209,7 @@ value om_notify_monitor_directory(value
#ifdef WIN32
CheckCode("om_notify_monitor_directory", FAMMonitorDirectoryTree(fc, name, &request, 0));
#else /* WIN32 */
- failwith("om_notify_monitor_directory: recursive monitoring is not allowed");
+ caml_failwith("om_notify_monitor_directory: recursive monitoring is not allowed");
#endif /* !WIN32 */
}
else
@@ -294,13 +294,13 @@ value om_notify_next_event(value v_fc)
CheckCode("om_notify_next_event", FAMNextEvent(fc, &event));
code = event.code;
if(code < 1 || code > 10)
- failwith("om_notify_next_event: code out of bounds");
+ caml_failwith("om_notify_next_event: code out of bounds");
/* Allocate the string name */
- v_name = copy_string(event.filename);
+ v_name = caml_copy_string(event.filename);
/* Allocate the tuple */
- v_tuple = alloc_tuple(3);
+ v_tuple = caml_alloc_tuple(3);
Field(v_tuple, 0) = Val_int(event.fr.reqnum);
Field(v_tuple, 1) = v_name;
Field(v_tuple, 2) = Val_int(code - 1);
int main(int argc, char **argv)
{
vector<string> cfg;
size_t cfg_num = 0;
if(argc==2) {
cfg.push_back(argv[1]);
} else if(argc==3) {
cfg.push_back(argv[1]);
cfg.push_back(argv[2]);
} else {
cfg.push_back(CONFIG_FILE);
}
time_t mtime;
struct stat s;
if (stat(cfg[cfg_num].c_str(), &s) == 0) {
mtime = s.st_mtime;
} else {
mtime = 0;
}
cout << "BBC MDI Generator Rev " << svn_version()
<< ", using libsdixml Rev " << libsdixml::svn_version() << endl
<< "Implementing SDI Schema version " << libsdixml::SDI_Schema_version()
<< endl << "Reading config from " << cfg[cfg_num] << endl; cout.flush();
Mdigen mdigen;
/*
DcpIn dcpin;
dcpin.ReConfigure("dcp.udp://:9998");
tagpacketlist t;
dcpin.getFrame(t);
for(tagpacketlist::iterator i=t.begin(); i!=t.end(); i++)
cout << i->first << " " << i->second.size() << endl;
*/
#ifdef WIN32
int iResult;
WSADATA wsaData;
// Initialize Winsock
iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
if (iResult != 0) {
printf("WSAStartup failed: %d\n", iResult);
exit(1);
}
#else
struct sigaction sa;
sa.sa_flags = SA_SIGINFO;
sigemptyset(&sa.sa_mask);
sa.sa_sigaction = signal_handler;
if (sigaction(SIGHUP, &sa, NULL) == -1)
{
cerr << "error assigning signal handler" << endl;
exit(1);
}
FAMConnection fc;
if(FAMOpen(&fc)==0)
{
FAMRequest fr;
if(cfg[0][0]!='/')
{
string path = getenv("PWD");
cerr << path << endl;
cfg[0] = path + "/" + cfg[0];
}
if(FAMMonitorFile(&fc, cfg[0].c_str(), &fr, NULL))
cerr << "can't monitor " << cfg[0] << endl;
else
cout << "FAM Monitoring " << cfg[0] << endl;
} else {
cerr << "can't connect to file alteration monitor " << endl;
}
#endif
bool ok = true;
int max_frames = -1;
int reconf_interval = 32;
int reconf = reconf_interval;
ReConfigure(mdigen, cfg[cfg_num], ok, max_frames);
while(ok) {
try {
mdigen.eachframe();
//cout << "Frame: " << mdigen.transmitted_frames << endl;
#ifndef WIN32
while(FAMPending(&fc))
{
FAMEvent fe;
FAMNextEvent(&fc, &fe);
switch(fe.code)
{
case FAMDeleted:
break;
case FAMChanged:
cout << "file alteration monitor detected config change" << endl;
reconfiguration_requested = true;
break;
case FAMCreated:
case FAMExists:
break;
case FAMEndExist:
cout << "FAM initialised " << fe.filename << endl;
break;
case FAMAcknowledge:
cout << "FAM cancel acknowledged " << fe.filename << endl;
break;
case FAMStartExecuting:
case FAMStopExecuting:
case FAMMoved:
cout << "unexpected fam event " << fe.code << " '" << fe.filename << "'" << endl;
break;
default:
cout << "unknown fam event " << fe.code << " '" << fe.filename << "'" << endl;
}
}
#endif
}
catch(char const* e) {
cerr << e << endl; cerr.flush();
}
if(reconfiguration_requested) {
ReConfigure(mdigen, cfg[cfg_num], ok, max_frames);
}
if(cfg.size()>1)
{
reconf--;
if(reconf==0)
{
cfg_num = 1 - cfg_num;
ReConfigure(mdigen, cfg[cfg_num], ok, max_frames);
reconf = reconf_interval;
}
}
if(max_frames!=-1 && mdigen.transmitted_frames > max_frames)
break;
}
}
