/*
* $Id$
*
- * Citadel/UX "system dependent" stuff.
+ * Citadel "system dependent" stuff.
* See copyright.txt for copyright information.
*
* Here's where we (hopefully) have most parts of the Citadel server that
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/socket.h>
+#include <sys/syslog.h>
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
#include <pwd.h>
#include <errno.h>
#include <stdarg.h>
-#include <syslog.h>
#include <grp.h>
#ifdef HAVE_PTHREAD_H
#include <pthread.h>
#include "snprintf.h"
#endif
+
#ifdef DEBUG_MEMORY_LEAKS
-struct TheHeap *heap = NULL;
+struct igheap {
+ struct igheap *next;
+ char file[32];
+ int line;
+ void *block;
+};
+
+struct igheap *igheap = NULL;
#endif
+
pthread_mutex_t Critters[MAX_SEMAPHORES]; /* Things needing locking */
pthread_key_t MyConKey; /* TSD key for MyContext() */
int verbosity = DEFAULT_VERBOSITY; /* Logging level */
struct CitContext masterCC;
-int rescan[2]; /* The Rescan Pipe */
time_t last_purge = 0; /* Last dead session purge */
static int num_threads = 0; /* Current number of threads */
int num_sessions = 0; /* Current number of sessions */
-fd_set masterfds; /* Master sockets etc. */
-int masterhighest;
-
pthread_t initial_thread; /* tid for main() thread */
+int syslog_facility = (-1);
+
/*
* lprintf() ... Write logging information
* Note: the variable "buf" below needs to be large enough to handle any
* log data sent through this function. BE CAREFUL!
*/
-void lprintf(int loglevel, const char *format, ...) {
- va_list arg_ptr;
+void lprintf(enum LogLevel loglevel, const char *format, ...) {
+ va_list arg_ptr;
char buf[SIZ];
-
- va_start(arg_ptr, format);
- vsnprintf(buf, sizeof(buf), format, arg_ptr);
- va_end(arg_ptr);
-
- if (loglevel <= verbosity) {
+
+ va_start(arg_ptr, format);
+ vsnprintf(buf, sizeof(buf), format, arg_ptr);
+ va_end(arg_ptr);
+
+ if (syslog_facility >= 0) {
+ if (loglevel <= verbosity) {
+ /* Hackery -IO */
+ if (CC && CC->cs_pid) {
+ memmove(buf + 6, buf, sizeof(buf) - 6);
+ snprintf(buf, 6, "[%3d]", CC->cs_pid);
+ buf[5] = ' ';
+ }
+ syslog(loglevel, buf);
+ }
+ }
+ else if (loglevel <= verbosity) {
struct timeval tv;
struct tm *tim;
time_t unixtime;
* %03ld to %06ld and remove " / 1000" after tv.tv_usec.
*/
if (CC && CC->cs_pid) {
+#if 0
+ /* Millisecond display */
fprintf(stderr,
"%04d/%02d/%02d %2d:%02d:%02d.%03ld [%3d] %s",
tim->tm_year + 1900, tim->tm_mon + 1,
tim->tm_mday, tim->tm_hour, tim->tm_min,
tim->tm_sec, (long)tv.tv_usec / 1000,
CC->cs_pid, buf);
+#endif
+ /* Microsecond display */
+ fprintf(stderr,
+ "%04d/%02d/%02d %2d:%02d:%02d.%06ld [%3d] %s",
+ tim->tm_year + 1900, tim->tm_mon + 1,
+ tim->tm_mday, tim->tm_hour, tim->tm_min,
+ tim->tm_sec, (long)tv.tv_usec,
+ CC->cs_pid, buf);
} else {
+#if 0
+ /* Millisecond display */
fprintf(stderr,
"%04d/%02d/%02d %2d:%02d:%02d.%03ld %s",
tim->tm_year + 1900, tim->tm_mon + 1,
tim->tm_mday, tim->tm_hour, tim->tm_min,
tim->tm_sec, (long)tv.tv_usec / 1000, buf);
+#endif
+ /* Microsecond display */
+ fprintf(stderr,
+ "%04d/%02d/%02d %2d:%02d:%02d.%06ld %s",
+ tim->tm_year + 1900, tim->tm_mon + 1,
+ tim->tm_mday, tim->tm_hour, tim->tm_min,
+ tim->tm_sec, (long)tv.tv_usec, buf);
}
fflush(stderr);
}
-#ifdef DEBUG_MEMORY_LEAKS
-void *tracked_malloc(size_t tsize, char *tfile, int tline) {
- void *ptr;
- struct TheHeap *hptr;
-
- ptr = malloc(tsize);
- if (ptr == NULL) {
- lprintf(3, "DANGER! mallok(%d) at %s:%d failed!\n",
- tsize, tfile, tline);
- return(NULL);
- }
-
- hptr = (struct TheHeap *) malloc(sizeof(struct TheHeap));
- strcpy(hptr->h_file, tfile);
- hptr->h_line = tline;
- hptr->next = heap;
- hptr->h_ptr = ptr;
- heap = hptr;
- return ptr;
-}
-
-char *tracked_strdup(const char *orig, char *tfile, int tline) {
- char *s;
-
- s = tracked_malloc( (strlen(orig)+1), tfile, tline);
- if (s == NULL) return NULL;
-
- strcpy(s, orig);
- return s;
-}
-
-void tracked_free(void *ptr) {
- struct TheHeap *hptr, *freeme;
-
- if (heap->h_ptr == ptr) {
- hptr = heap->next;
- free(heap);
- heap = hptr;
- }
- else {
- for (hptr=heap; hptr->next!=NULL; hptr=hptr->next) {
- if (hptr->next->h_ptr == ptr) {
- freeme = hptr->next;
- hptr->next = hptr->next->next;
- free(freeme);
- }
- }
- }
-
- free(ptr);
-}
-
-void *tracked_realloc(void *ptr, size_t size) {
- void *newptr;
- struct TheHeap *hptr;
-
- newptr = realloc(ptr, size);
-
- for (hptr=heap; hptr!=NULL; hptr=hptr->next) {
- if (hptr->h_ptr == ptr) hptr->h_ptr = newptr;
- }
-
- return newptr;
-}
-
-
-void dump_tracked() {
- struct TheHeap *hptr;
-
- cprintf("%d Here's what's allocated...\n", LISTING_FOLLOWS);
- for (hptr=heap; hptr!=NULL; hptr=hptr->next) {
- cprintf("%20s %5d\n",
- hptr->h_file, hptr->h_line);
- }
-#ifdef __GNUC__
- malloc_stats();
-#endif
-
- cprintf("000\n");
-}
-#endif
-
-
/*
* We used to use master_cleanup() as a signal handler to shut down the server.
* however, master_cleanup() and the functions it calls do some things that
* session to which the calling thread is currently bound.
*/
if (pthread_key_create(&MyConKey, NULL) != 0) {
- lprintf(1, "Can't create TSD key!! %s\n", strerror(errno));
+ lprintf(CTDL_CRIT, "Can't create TSD key!! %s\n", strerror(errno));
}
/*
*/
void begin_critical_section(int which_one)
{
- /* lprintf(9, "begin_critical_section(%d)\n", which_one); */
- /* ensure nobody ever tries to do a critical section within a
- transaction; this could lead to deadlock. */
- cdb_check_handles();
+ /* lprintf(CTDL_DEBUG, "begin_critical_section(%d)\n", which_one); */
+
+ /* For all types of critical sections except those listed here,
+ * ensure nobody ever tries to do a critical section within a
+ * transaction; this could lead to deadlock.
+ */
+ if ( (which_one != S_FLOORCACHE)
+#ifdef DEBUG_MEMORY_LEAKS
+ && (which_one != S_DEBUGMEMLEAKS)
+#endif
+ ) {
+ cdb_check_handles();
+ }
pthread_mutex_lock(&Critters[which_one]);
}
*/
void end_critical_section(int which_one)
{
- /* lprintf(9, "end_critical_section(%d)\n", which_one); */
pthread_mutex_unlock(&Critters[which_one]);
}
* a TCP port. The server shuts down if the bind fails.
*
*/
-int ig_tcp_server(int port_number, int queue_len)
+int ig_tcp_server(char *ip_addr, int port_number, int queue_len)
{
struct sockaddr_in sin;
int s, i;
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
- sin.sin_addr.s_addr = INADDR_ANY;
sin.sin_port = htons((u_short)port_number);
+ if (ip_addr == NULL) {
+ sin.sin_addr.s_addr = INADDR_ANY;
+ }
+ else {
+ sin.sin_addr.s_addr = inet_addr(ip_addr);
+ }
+
+ if (sin.sin_addr.s_addr == INADDR_NONE) {
+ sin.sin_addr.s_addr = INADDR_ANY;
+ }
s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (s < 0) {
- lprintf(1, "citserver: Can't create a socket: %s\n",
+ lprintf(CTDL_EMERG, "citserver: Can't create a socket: %s\n",
strerror(errno));
return(-1);
}
setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
- lprintf(1, "citserver: Can't bind: %s\n",
+ lprintf(CTDL_EMERG, "citserver: Can't bind: %s\n",
strerror(errno));
close(s);
return(-1);
}
if (listen(s, actual_queue_len) < 0) {
- lprintf(1, "citserver: Can't listen: %s\n", strerror(errno));
+ lprintf(CTDL_EMERG, "citserver: Can't listen: %s\n", strerror(errno));
close(s);
return(-1);
}
i = unlink(sockpath);
if (i != 0) if (errno != ENOENT) {
- lprintf(1, "citserver: can't unlink %s: %s\n",
+ lprintf(CTDL_EMERG, "citserver: can't unlink %s: %s\n",
sockpath, strerror(errno));
return(-1);
}
s = socket(AF_UNIX, SOCK_STREAM, 0);
if (s < 0) {
- lprintf(1, "citserver: Can't create a socket: %s\n",
+ lprintf(CTDL_EMERG, "citserver: Can't create a socket: %s\n",
strerror(errno));
return(-1);
}
if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
- lprintf(1, "citserver: Can't bind: %s\n",
+ lprintf(CTDL_EMERG, "citserver: Can't bind: %s\n",
strerror(errno));
return(-1);
}
if (listen(s, actual_queue_len) < 0) {
- lprintf(1, "citserver: Can't listen: %s\n", strerror(errno));
+ lprintf(CTDL_EMERG, "citserver: Can't listen: %s\n", strerror(errno));
return(-1);
}
*
* It's inlined because it's used *VERY* frequently.
*/
-inline struct CitContext *MyContext(void) {
+INLINE struct CitContext *MyContext(void) {
return ((pthread_getspecific(MyConKey) == NULL)
? &masterCC
: (struct CitContext *) pthread_getspecific(MyConKey)
struct CitContext *CreateNewContext(void) {
struct CitContext *me, *ptr;
- me = (struct CitContext *) mallok(sizeof(struct CitContext));
+ me = (struct CitContext *) malloc(sizeof(struct CitContext));
if (me == NULL) {
- lprintf(1, "citserver: can't allocate memory!!\n");
+ lprintf(CTDL_ALERT, "citserver: can't allocate memory!!\n");
return NULL;
}
memset(me, 0, sizeof(struct CitContext));
/*
* buffer_output() ... tell client_write to buffer all output until
- * instructed to dump it all out later
+ * instructed to dump it all out later
*/
void buffer_output(void) {
if (CC->buffering == 0) {
CC->buffering = 1;
CC->buffer_len = 0;
- CC->output_buffer = mallok(SIZ);
+ CC->output_buffer = malloc(SIZ);
}
}
if (CC->buffering == 1) {
CC->buffering = 0;
client_write(CC->output_buffer, CC->buffer_len);
- phree(CC->output_buffer);
+ free(CC->output_buffer);
CC->output_buffer = NULL;
CC->buffer_len = 0;
}
if (CC->buffering) {
old_buffer_len = CC->buffer_len;
CC->buffer_len += nbytes;
- CC->output_buffer = reallok(CC->output_buffer, CC->buffer_len);
+ CC->output_buffer = realloc(CC->output_buffer, CC->buffer_len);
memcpy(&CC->output_buffer[old_buffer_len], buf, nbytes);
return;
}
retval = write(sock, &buf[bytes_written],
nbytes - bytes_written);
if (retval < 1) {
- lprintf(2, "client_write() failed: %s\n",
+ lprintf(CTDL_ERR, "client_write() failed: %s\n",
strerror(errno));
if (sock == CC->client_socket) CC->kill_me = 1;
return;
/*
* cprintf() ... Send formatted printable data to the client. It is
- * implemented in terms of client_write() but remains in
- * sysdep.c in case we port to somewhere without va_args...
+ * implemented in terms of client_write() but remains in
+ * sysdep.c in case we port to somewhere without va_args...
*/
void cprintf(const char *format, ...) {
- va_list arg_ptr;
- char buf[SIZ];
+ va_list arg_ptr;
+ char buf[SIZ];
- va_start(arg_ptr, format);
- if (vsnprintf(buf, sizeof buf, format, arg_ptr) == -1)
+ va_start(arg_ptr, format);
+ if (vsnprintf(buf, sizeof buf, format, arg_ptr) == -1)
buf[sizeof buf - 2] = '\n';
client_write(buf, strlen(buf));
va_end(arg_ptr);
rlen = read(CC->client_socket, &buf[len], bytes-len);
if (rlen<1) {
- lprintf(2, "client_read() failed: %s\n",
+ lprintf(CTDL_ERR, "client_read() failed: %s\n",
strerror(errno));
CC->kill_me = 1;
return(-1);
* (This is implemented in terms of client_read_to() and could be
* justifiably moved out of sysdep.c)
*/
-inline int client_read(char *buf, int bytes)
+INLINE int client_read(char *buf, int bytes)
{
return(client_read_to(buf, bytes, config.c_sleeping));
}
serviceptr = serviceptr->next ) {
if (serviceptr->tcp_port > 0)
- lprintf(3, "Closing listener on port %d\n",
+ lprintf(CTDL_INFO, "Closing listener on port %d\n",
serviceptr->tcp_port);
if (serviceptr->sockpath != NULL)
- lprintf(3, "Closing listener on '%s'\n",
+ lprintf(CTDL_INFO, "Closing listener on '%s'\n",
serviceptr->sockpath);
close(serviceptr->msock);
struct worker_node *n;
pthread_attr_t attr;
- n = mallok(sizeof(struct worker_node));
+ n = malloc(sizeof(struct worker_node));
if (n == NULL) {
- lprintf(1, "can't allocate worker_node, exiting\n");
+ lprintf(CTDL_EMERG, "can't allocate worker_node, exiting\n");
time_to_die = -1;
return;
}
if ((ret = pthread_attr_init(&attr))) {
- lprintf(1, "pthread_attr_init: %s\n", strerror(ret));
+ lprintf(CTDL_EMERG, "pthread_attr_init: %s\n", strerror(ret));
time_to_die = -1;
return;
}
/* we seem to need something bigger than FreeBSD's default 64k stack */
if ((ret = pthread_attr_setstacksize(&attr, 128 * 1024))) {
- lprintf(1, "pthread_attr_setstacksize: %s\n", strerror(ret));
+ lprintf(CTDL_EMERG, "pthread_attr_setstacksize: %s\n", strerror(ret));
time_to_die = -1;
return;
}
if ((ret = pthread_create(&n->tid, &attr, worker_thread, NULL) != 0))
{
- lprintf(1, "Can't create worker thread: %s\n",
+ lprintf(CTDL_ALERT, "Can't create worker thread: %s\n",
strerror(ret));
}
* Purge all sessions which have the 'kill_me' flag set.
* This function has code to prevent it from running more than once every
* few seconds, because running it after every single unbind would waste a lot
- * of CPU time and keep the context list locked too much.
+ * of CPU time and keep the context list locked too much. To force it to run
+ * anyway, set "force" to nonzero.
+ *
*
- * After that's done, we raise or lower the size of the worker thread pool
+ * After that's done, we raise the size of the worker thread pool
* if such an action is appropriate.
*/
-void dead_session_purge(void) {
+void dead_session_purge(int force) {
struct CitContext *ptr, *rem;
- struct worker_node **node, *tmp;
- pthread_t self;
- if ( (time(NULL) - last_purge) < 5 ) return; /* Too soon, go away */
+ if (force == 0) {
+ if ( (time(NULL) - last_purge) < 5 ) {
+ return; /* Too soon, go away */
+ }
+ }
time(&last_purge);
do {
* section, so we have to do it like this.
*/
if (rem != NULL) {
- lprintf(9, "Purging session %d\n", rem->cs_pid);
+ lprintf(CTDL_DEBUG, "Purging session %d\n", rem->cs_pid);
RemoveContext(rem);
}
} while (rem != NULL);
-
- /* Raise or lower the size of the worker thread pool if such
- * an action is appropriate.
- */
-
- self = pthread_self();
+ /* Raise the size of the worker thread pool if necessary. */
if ( (num_sessions > num_threads)
&& (num_threads < config.c_max_workers) ) {
create_worker();
end_critical_section(S_WORKER_LIST);
}
-
- /* don't let the initial thread die since it's responsible for
- waiting for all the other threads to terminate. */
- else if ( (num_sessions < num_threads)
- && (num_threads > config.c_min_workers)
- && (self != initial_thread) ) {
- cdb_free_tsd();
- begin_critical_section(S_WORKER_LIST);
- --num_threads;
-
- /* we're exiting before server shutdown... unlink ourself from
- the worker list and detach our thread to avoid memory leaks
- */
-
- for (node = &worker_list; *node != NULL; node = &(*node)->next)
- if ((*node)->tid == self) {
- tmp = *node;
- *node = (*node)->next;
- phree(tmp);
- break;
- }
-
- pthread_detach(self);
- end_critical_section(S_WORKER_LIST);
- pthread_exit(NULL);
- }
-
}
-/*
- * Set up a fd_set containing all the master sockets to which we
- * always listen. It's computationally less expensive to just copy
- * this to a local fd_set when starting a new select() and then add
- * the client sockets than it is to initialize a new one and then
- * figure out what to put there.
- */
-void init_master_fdset(void) {
- struct ServiceFunctionHook *serviceptr;
- int m;
-
- lprintf(9, "Initializing master fdset\n");
-
- FD_ZERO(&masterfds);
- masterhighest = 0;
-
- lprintf(9, "Will listen on rescan pipe %d\n", rescan[0]);
- FD_SET(rescan[0], &masterfds);
- if (rescan[0] > masterhighest) masterhighest = rescan[0];
- for (serviceptr = ServiceHookTable; serviceptr != NULL;
- serviceptr = serviceptr->next ) {
- m = serviceptr->msock;
- lprintf(9, "Will listen on master socket %d\n", m);
- FD_SET(m, &masterfds);
- if (m > masterhighest) {
- masterhighest = m;
- }
- }
- lprintf(9, "masterhighest = %d\n", masterhighest);
-}
/*
*/
void *worker_thread(void *arg) {
int i;
- char junk;
int highest;
struct CitContext *ptr;
struct CitContext *bind_me = NULL;
struct ServiceFunctionHook *serviceptr;
int ssock; /* Descriptor for client socket */
struct timeval tv;
+ int force_purge = 0;
+ int m;
num_threads++;
while (!time_to_die) {
- /*
- * A naive implementation would have all idle threads
- * calling select() and then they'd all wake up at once
- * (known in computer science as the "thundering herd"
- * problem). We solve this problem by putting the select()
- * in a critical section, so only one thread has the
- * opportunity to wake up. If we wake up on a master
- * socket, create a new session context; otherwise, just
- * bind the thread to the context we want and go on our
- * merry way.
- */
-
/* make doubly sure we're not holding any stale db handles
* which might cause a deadlock.
*/
cdb_check_handles();
+do_select: force_purge = 0;
+ bind_me = NULL; /* Which session shall we handle? */
+
+ /* Initialize the fdset. */
+ FD_ZERO(&readfds);
+ highest = 0;
- begin_critical_section(S_I_WANNA_SELECT);
-SETUP_FD: memcpy(&readfds, &masterfds, sizeof masterfds);
- highest = masterhighest;
begin_critical_section(S_SESSION_TABLE);
for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
if (ptr->state == CON_IDLE) {
if (ptr->client_socket > highest)
highest = ptr->client_socket;
}
+ if ((bind_me == NULL) && (ptr->state == CON_READY)) {
+ bind_me = ptr;
+ ptr->state = CON_EXECUTING;
+ }
}
end_critical_section(S_SESSION_TABLE);
- tv.tv_sec = 1; /* wake up every second if no input */
- tv.tv_usec = 0;
+ if (bind_me) goto SKIP_SELECT;
+
+ /* If we got this far, it means that there are no sessions
+ * which a previous thread marked for attention, so we go
+ * ahead and get ready to select().
+ */
+
+ /* First, add the various master sockets to the fdset. */
+ for (serviceptr = ServiceHookTable; serviceptr != NULL;
+ serviceptr = serviceptr->next ) {
+ m = serviceptr->msock;
+ FD_SET(m, &readfds);
+ if (m > highest) {
+ highest = m;
+ }
+ }
- do_select:
- if (!time_to_die)
+ if (!time_to_die) {
+ tv.tv_sec = 1; /* wake up every second if no input */
+ tv.tv_usec = 0;
retval = select(highest + 1, &readfds, NULL, NULL, &tv);
+ }
else {
- end_critical_section(S_I_WANNA_SELECT);
break;
}
* First, check for an error or exit condition.
*/
if (retval < 0) {
+ if (errno == EBADF) {
+ lprintf(CTDL_NOTICE, "select() failed: (%s)\n",
+ strerror(errno));
+ goto do_select;
+ }
if (errno != EINTR) {
- lprintf(9, "Exiting (%s)\n", strerror(errno));
+ lprintf(CTDL_EMERG, "Exiting (%s)\n", strerror(errno));
time_to_die = 1;
} else if (!time_to_die)
goto do_select;
if (FD_ISSET(serviceptr->msock, &readfds)) {
ssock = accept(serviceptr->msock, NULL, 0);
if (ssock < 0) {
- lprintf(2, "citserver: accept(): %s\n",
+ lprintf(CTDL_CRIT,
+ "citserver: accept(): %s\n",
strerror(errno));
}
else {
- lprintf(7, "citserver: "
+ lprintf(CTDL_NOTICE,
"New client socket %d\n",
ssock);
con->client_socket = ssock;
con->h_command_function =
serviceptr->h_command_function;
+ con->h_async_function =
+ serviceptr->h_async_function;
/* Determine whether local socket */
if (serviceptr->sockpath != NULL)
serviceptr->h_greeting_function();
become_session(NULL);
con->state = CON_IDLE;
- goto SETUP_FD;
+ goto do_select;
}
}
}
- /* If the rescan pipe went active, someone is telling this
- * thread that the &readfds needs to be refreshed with more
- * current data.
- */
if (time_to_die) {
- end_critical_section(S_I_WANNA_SELECT);
break;
}
- if (FD_ISSET(rescan[0], &readfds)) {
- read(rescan[0], &junk, 1);
- goto SETUP_FD;
- }
-
/* It must be a client socket. Find a context that has data
- * waiting on its socket *and* is in the CON_IDLE state.
+ * waiting on its socket *and* is in the CON_IDLE state. Any
+ * active sockets other than our chosen one are marked as
+ * CON_READY so the next thread that comes around can just bind
+ * to one without having to select() again.
*/
- else {
- bind_me = NULL;
- begin_critical_section(S_SESSION_TABLE);
- for (ptr = ContextList;
- ( (ptr != NULL) && (bind_me == NULL) );
- ptr = ptr->next) {
- if ( (FD_ISSET(ptr->client_socket, &readfds))
- && (ptr->state == CON_IDLE) ) {
- bind_me = ptr;
+ begin_critical_section(S_SESSION_TABLE);
+ for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
+ if ( (FD_ISSET(ptr->client_socket, &readfds))
+ && (ptr->state != CON_EXECUTING) ) {
+ ptr->input_waiting = 1;
+ if (!bind_me) {
+ bind_me = ptr; /* I choose you! */
+ bind_me->state = CON_EXECUTING;
+ }
+ else {
+ ptr->state = CON_READY;
}
}
- if (bind_me != NULL) {
- /* Found one. Stake a claim to it before
- * letting anyone else touch the context list.
- */
- bind_me->state = CON_EXECUTING;
- }
+ }
+ end_critical_section(S_SESSION_TABLE);
- end_critical_section(S_SESSION_TABLE);
- end_critical_section(S_I_WANNA_SELECT);
+SKIP_SELECT:
+ /* We're bound to a session */
+ if (bind_me != NULL) {
+ become_session(bind_me);
- /* We're bound to a session, now do *one* command */
- if (bind_me != NULL) {
- become_session(bind_me);
+ /* If the client has sent a command, execute it. */
+ if (CC->input_waiting) {
CC->h_command_function();
- become_session(NULL);
- bind_me->state = CON_IDLE;
- if (bind_me->kill_me == 1) {
- RemoveContext(bind_me);
- }
- write(rescan[1], &junk, 1);
+ CC->input_waiting = 0;
}
+ /* If there are asynchronous messages waiting and the
+ * client supports it, do those now */
+ if ((CC->is_async) && (CC->async_waiting)
+ && (CC->h_async_function != NULL)) {
+ CC->h_async_function();
+ CC->async_waiting = 0;
+ }
+
+ force_purge = CC->kill_me;
+ become_session(NULL);
+ bind_me->state = CON_IDLE;
}
- dead_session_purge();
+
+ dead_session_purge(force_purge);
do_housekeeping();
check_sched_shutdown();
}
--num_threads;
return NULL;
}
+
+
+
+
+/*
+ * SyslogFacility()
+ * Translate text facility name to syslog.h defined value.
+ */
+int SyslogFacility(char *name)
+{
+ int i;
+ struct
+ {
+ int facility;
+ char *name;
+ } facTbl[] =
+ {
+ { LOG_KERN, "kern" },
+ { LOG_USER, "user" },
+ { LOG_MAIL, "mail" },
+ { LOG_DAEMON, "daemon" },
+ { LOG_AUTH, "auth" },
+ { LOG_SYSLOG, "syslog" },
+ { LOG_LPR, "lpr" },
+ { LOG_NEWS, "news" },
+ { LOG_UUCP, "uucp" },
+ { LOG_LOCAL0, "local0" },
+ { LOG_LOCAL1, "local1" },
+ { LOG_LOCAL2, "local2" },
+ { LOG_LOCAL3, "local3" },
+ { LOG_LOCAL4, "local4" },
+ { LOG_LOCAL5, "local5" },
+ { LOG_LOCAL6, "local6" },
+ { LOG_LOCAL7, "local7" },
+ { 0, NULL }
+ };
+ for(i = 0; facTbl[i].name != NULL; i++) {
+ if(!strcasecmp(name, facTbl[i].name))
+ return facTbl[i].facility;
+ }
+ return -1;
+}
+
+
+/********** MEM CHEQQER ***********/
+
+#ifdef DEBUG_MEMORY_LEAKS
+
+#undef malloc
+#undef realloc
+#undef strdup
+#undef free
+
+void *tracked_malloc(size_t size, char *file, int line) {
+ struct igheap *thisheap;
+ void *block;
+
+ block = malloc(size);
+ if (block == NULL) return(block);
+
+ thisheap = malloc(sizeof(struct igheap));
+ if (thisheap == NULL) {
+ free(block);
+ return(NULL);
+ }
+
+ thisheap->block = block;
+ strcpy(thisheap->file, file);
+ thisheap->line = line;
+
+ begin_critical_section(S_DEBUGMEMLEAKS);
+ thisheap->next = igheap;
+ igheap = thisheap;
+ end_critical_section(S_DEBUGMEMLEAKS);
+
+ return(block);
+}
+
+
+void *tracked_realloc(void *ptr, size_t size, char *file, int line) {
+ struct igheap *thisheap;
+ void *block;
+
+ block = realloc(ptr, size);
+ if (block == NULL) return(block);
+
+ thisheap = malloc(sizeof(struct igheap));
+ if (thisheap == NULL) {
+ free(block);
+ return(NULL);
+ }
+
+ thisheap->block = block;
+ strcpy(thisheap->file, file);
+ thisheap->line = line;
+
+ begin_critical_section(S_DEBUGMEMLEAKS);
+ thisheap->next = igheap;
+ igheap = thisheap;
+ end_critical_section(S_DEBUGMEMLEAKS);
+
+ return(block);
+}
+
+
+
+void tracked_free(void *ptr) {
+ struct igheap *thisheap;
+ struct igheap *trash;
+
+ free(ptr);
+
+ if (igheap == NULL) return;
+ begin_critical_section(S_DEBUGMEMLEAKS);
+ for (thisheap = igheap; thisheap != NULL; thisheap = thisheap->next) {
+ if (thisheap->next != NULL) {
+ if (thisheap->next->block == ptr) {
+ trash = thisheap->next;
+ thisheap->next = thisheap->next->next;
+ free(trash);
+ }
+ }
+ }
+ if (igheap->block == ptr) {
+ trash = igheap;
+ igheap = igheap->next;
+ free(trash);
+ }
+ end_critical_section(S_DEBUGMEMLEAKS);
+}
+
+char *tracked_strdup(const char *s, char *file, int line) {
+ char *ptr;
+
+ if (s == NULL) return(NULL);
+ ptr = tracked_malloc(strlen(s) + 1, file, line);
+ if (ptr == NULL) return(NULL);
+ strncpy(ptr, s, strlen(s));
+ return(ptr);
+}
+
+void dump_heap(void) {
+ struct igheap *thisheap;
+
+ for (thisheap = igheap; thisheap != NULL; thisheap = thisheap->next) {
+ lprintf(CTDL_CRIT, "UNFREED: %30s : %d\n",
+ thisheap->file, thisheap->line);
+ }
+}
+
+#endif /* DEBUG_MEMORY_LEAKS */
projects / citadel.git / blobdiff