log: log_file rewrited to use aio

log: simplified engine
various bug fixes

18 files changed, 545 insertions, 399 deletions

diff --git a/accel-pptpd/CMakeLists.txt b/accel-pptpd/CMakeLists.txt
index ee00a28..3de0072 100644
--- a/accel-pptpd/CMakeLists.txt
+++ b/accel-pptpd/CMakeLists.txt
@@ -1,7 +1,7 @@
 PROJECT (pptpd)
 cmake_minimum_required(VERSION 2.6)
 
-SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -fvisibility=hidden -D_GNU_SOURCE -DSPINLOCK_GCC -DMEMDEBUG")
+SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -fvisibility=hidden -D_GNU_SOURCE -DGCC_SPINLOCK -DMEMDEBUG")
 
 INCLUDE_DIRECTORIES(include)
 
diff --git a/accel-pptpd/accel-pptpd.conf b/accel-pptpd/accel-pptpd.conf
index 230ddba..965d9bc 100644
--- a/accel-pptpd/accel-pptpd.conf
+++ b/accel-pptpd/accel-pptpd.conf
@@ -11,6 +11,7 @@
 
 [core]
 log-error=/dev/stderr
+thread-count=4
 
 [ppp]
 verbose=1
@@ -33,8 +34,9 @@ dm_coa_secret=testing123
 verbose=1
 
 [client-ip-range]
-192.168.11.20-20
-192.168.11.6/32
+192.168.10.20-20
+192.168.10.6/32
+192.168.10.1/32
 
 [ip-pool]
 gw-ip-address=192.168.100.1
@@ -47,13 +49,13 @@ gw-ip-address=192.168.100.1
 
 [log]
 log-file=general.log
-log-emerg=emerg.log
+log-emerg=/dev/stderr
 log-debug=debug.log
 copy=1
-color=1
+#color=1
 per-user-dir=per_user
 per-session-dir=per_session
-per-session=1
+#per-session=1
 
 [log-pgsql]
 conninfo=user=log
diff --git a/accel-pptpd/ctrl/pptp.c b/accel-pptpd/ctrl/pptp.c
index b8bb366..9f76a34 100644
--- a/accel-pptpd/ctrl/pptp.c
+++ b/accel-pptpd/ctrl/pptp.c
@@ -511,6 +511,8 @@ static int pptp_connect(struct triton_md_handler_t *h)
 		conn->ppp.ctrl = &conn->ctrl;
 
 		triton_context_register(&conn->ctx, &conn->ppp);
+		conn->ctx.fname=__FILE__;
+		conn->ctx.line=__LINE__;
 		triton_md_register_handler(&conn->ctx, &conn->hnd);
 		triton_md_enable_handler(&conn->hnd,MD_MODE_READ);
 		triton_timer_add(&conn->ctx, &conn->timeout_timer, 0);
@@ -539,26 +541,26 @@ static void __init pptp_init(void)
 	
 	serv.hnd.fd = socket (PF_INET, SOCK_STREAM, 0);
   if (serv.hnd.fd < 0) {
-    log_error("pptp: failed to create server socket: %s\n", strerror(errno));
+    log_emerg("pptp: failed to create server socket: %s\n", strerror(errno));
     return;
   }
   addr.sin_family = AF_INET;
   addr.sin_port = htons (PPTP_PORT);
   addr.sin_addr.s_addr = htonl (INADDR_ANY);
   if (bind (serv.hnd.fd, (struct sockaddr *) &addr, sizeof (addr)) < 0) {
-    log_error("pptp: failed to bind socket: %s\n", strerror(errno));
+    log_emerg("pptp: failed to bind socket: %s\n", strerror(errno));
 		close(serv.hnd.fd);
     return;
   }
 
   if (listen (serv.hnd.fd, 100) < 0) {
-    log_error("pptp: failed to listen socket: %s\n", strerror(errno));
+    log_emerg("pptp: failed to listen socket: %s\n", strerror(errno));
 		close(serv.hnd.fd);
     return;
   }
 
 	if (fcntl(serv.hnd.fd, F_SETFL, O_NONBLOCK)) {
-    log_error("pptp: failed to set nonblocking mode: %s\n", strerror(errno));
+    log_emerg("pptp: failed to set nonblocking mode: %s\n", strerror(errno));
 		close(serv.hnd.fd);
     return;
 	}
diff --git a/accel-pptpd/include/mempool.h b/accel-pptpd/include/mempool.h
new file mode 120000
index 0000000..2637ab6
--- /dev/null
+++ b/accel-pptpd/include/mempool.h
@@ -0,0 +1 @@
+../triton/mempool.h
\ No newline at end of file
diff --git a/accel-pptpd/log.c b/accel-pptpd/log.c
index b0f6d52..60ac57e 100644
--- a/accel-pptpd/log.c
+++ b/accel-pptpd/log.c
@@ -34,7 +34,6 @@ struct _log_msg_t
 };
 
 static int log_level=10;
-static int conf_copy = 0;
 
 static LIST_HEAD(targets);
 static mempool_t msg_pool;
@@ -48,22 +47,16 @@ static __thread char stat_buf[LOG_MAX_SIZE+1];
 static FILE *emerg_file;
 static FILE *debug_file;
 
-static void *pd_key;
-
 static void _log_free_msg(struct _log_msg_t *msg);
 static struct log_msg_t *clone_msg(struct _log_msg_t *msg);
 static int add_msg(struct _log_msg_t *msg, const char *buf);
-static struct log_pd_t *find_pd(struct ppp_t *ppp);
+//static struct log_pd_t *find_pd(struct ppp_t *ppp);
 static void write_msg(FILE *f, struct _log_msg_t *msg, struct ppp_t *ppp);
 
 static void do_log(int level, const char *fmt, va_list ap, struct ppp_t *ppp)
 {
 	struct log_target_t *t;
 	struct log_msg_t *m;
-	struct log_pd_t *lpd;
-
-	if (list_empty(&targets))
-		return;
 
 	vsnprintf(stat_buf, LOG_MAX_SIZE, fmt, ap);
 
@@ -86,33 +79,15 @@ static void do_log(int level, const char *fmt, va_list ap, struct ppp_t *ppp)
 	if (debug_file)
 		write_msg(debug_file, cur_msg, ppp);
 
-	if (ppp && !ppp->username) {
-		lpd = find_pd(ppp);
-		list_add_tail(&cur_msg->entry, &lpd->msgs);
-	}
-
 	list_for_each_entry(t, &targets, entry) {
-		if (ppp && ppp->username) {
-			if (t->session_log) {
-				m = clone_msg(cur_msg);
-				if (!m)
-					break;
-				t->session_log(ppp, m);
-			}
-		}
-		if (!ppp || conf_copy) {
-			if (t->log) {
-				m = clone_msg(cur_msg);
-				if (!m)
-					break;
-				t->log(m);
-			}
-		}
+		m = clone_msg(cur_msg);
+		if (!m)
+			break;
+		t->log(m, ppp);
 	}
 
 out:
-	if (!ppp || ppp->username)
-		_log_free_msg(cur_msg);
+	_log_free_msg(cur_msg);
 	cur_msg = NULL;
 }
 
@@ -226,6 +201,8 @@ void __export log_free_msg(struct log_msg_t *m)
 {
 	struct _log_msg_t *msg = (struct _log_msg_t *)m->lpd;
 
+	//printf("free msg %p\n", m);
+	
 	mempool_free(m->hdr);
 	_log_free_msg(msg);
 
@@ -272,6 +249,7 @@ static struct log_msg_t *clone_msg(struct _log_msg_t *msg)
 
 	__sync_add_and_fetch(&msg->refs, 1);
 
+	//printf("clone msg %p\n", m);
 	return m;
 }
 
@@ -298,21 +276,6 @@ static int add_msg(struct _log_msg_t *msg, const char *buf)
 	return 0;
 }
 
-static struct log_pd_t *find_pd(struct ppp_t *ppp)
-{
-	struct ppp_pd_t *pd;
-	struct log_pd_t *lpd;
-
-	list_for_each_entry(pd, &ppp->pd_list, entry) {
-		if (pd->key == &pd_key) {
-			lpd = container_of(pd, typeof(*lpd), pd);
-			return lpd;
-		}
-	}
-	log_emerg("log:BUG: pd not found\n");
-	abort();
-}
-
 static void write_msg(FILE *f, struct _log_msg_t *msg, struct ppp_t *ppp)
 {
 	struct log_chunk_t *chunk;
@@ -329,6 +292,21 @@ static void write_msg(FILE *f, struct _log_msg_t *msg, struct ppp_t *ppp)
 	fflush(f);
 }
 
+/*static struct log_pd_t *find_pd(struct ppp_t *ppp)
+{
+	struct ppp_pd_t *pd;
+	struct log_pd_t *lpd;
+
+	list_for_each_entry(pd, &ppp->pd_list, entry) {
+		if (pd->key == &pd_key) {
+			lpd = container_of(pd, typeof(*lpd), pd);
+			return lpd;
+		}
+	}
+	log_emerg("log:BUG: pd not found\n");
+	abort();
+}
+
 static void ev_ctrl_starting(struct ppp_t *ppp)
 {
 	struct log_pd_t *lpd = _malloc(sizeof(*lpd));
@@ -414,7 +392,7 @@ static void ev_ppp_authorized(struct ppp_t *ppp)
 	}
 
 	lpd->authorized = 1;
-}
+}*/
 
 void __export log_switch(struct triton_context_t *ctx, void *arg)
 {
@@ -444,15 +422,7 @@ static void __init log_init(void)
 			fprintf(stderr, "log:open: %s\n", strerror(errno));
 	}
 
-	opt = conf_get_opt("log", "copy");
-	if (opt && atoi(opt) > 0)
-		conf_copy = 1;
-
 	msg_pool = mempool_create(sizeof(struct log_msg_t));
 	_msg_pool = mempool_create(sizeof(struct _log_msg_t));
 	chunk_pool = mempool_create(sizeof(struct log_chunk_t) + LOG_CHUNK_SIZE + 1);
-
-	triton_event_register_handler(EV_CTRL_STARTING, (triton_event_func)ev_ctrl_starting);
-	triton_event_register_handler(EV_CTRL_FINISHED, (triton_event_func)ev_ctrl_finished);
-	triton_event_register_handler(EV_PPP_AUTHORIZED, (triton_event_func)ev_ppp_authorized);
 }
diff --git a/accel-pptpd/log.h b/accel-pptpd/log.h
index ec0e5b7..9789459 100644
--- a/accel-pptpd/log.h
+++ b/accel-pptpd/log.h
@@ -39,10 +39,7 @@ struct log_target_t
 {
 	struct list_head entry;
 
-	void (*log)(struct log_msg_t *);
-	void (*session_log)(struct ppp_t *ppp, struct log_msg_t *);
-	void (*session_start)(struct ppp_t *ppp);
-	void (*session_stop)(struct ppp_t *ppp);
+	void (*log)(struct log_msg_t *, struct ppp_t *ppp);
 };
 
 void log_free_msg(struct log_msg_t *msg);
diff --git a/accel-pptpd/logs/CMakeLists.txt b/accel-pptpd/logs/CMakeLists.txt
index 4282761..17ae92d 100644
--- a/accel-pptpd/logs/CMakeLists.txt
+++ b/accel-pptpd/logs/CMakeLists.txt
@@ -1,4 +1,4 @@
-ADD_LIBRARY(log_file SHARED log_file.c)
+ADD_LIBRARY(log_file SHARED log_file2.c)
 ADD_LIBRARY(log_pgsql SHARED log_pgsql.c)
 TARGET_LINK_LIBRARIES(log_pgsql pq)
 
diff --git a/accel-pptpd/logs/log_file.c b/accel-pptpd/logs/log_file.c
index f5bded9..b13f81a 100644
--- a/accel-pptpd/logs/log_file.c
+++ b/accel-pptpd/logs/log_file.c
@@ -5,13 +5,19 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <limits.h>
+#include <aio.h>
+#include <sys/signalfd.h>
 
 #include "log.h"
+#include "events.h"
 #include "ppp.h"
 #include "spinlock.h"
+#include "mempool.h"
 
 #include "memdebug.h"
 
+#define LOG_BUF_SIZE 16*1024
+
 #define RED_COLOR     "\033[1;31m"
 #define GREEN_COLOR   "\033[1;32m"
 #define YELLOW_COLOR  "\033[1;33m"
@@ -20,28 +26,29 @@
 
 struct log_file_t
 {
-	struct triton_context_t ctx;
-	struct triton_md_handler_t hnd;
+	struct list_head entry;
 	struct list_head msgs;
-	struct log_msg_t *cur_msg;
-	struct log_chunk_t *cur_chunk;
-	int cur_pos;
 	spinlock_t lock;
-	int sleeping:1;
 	int need_free:1;
+	int queued:1;
 	struct log_file_pd_t *lpd;
+
+	int fd;
+	off_t offset;
 };
 
 struct log_file_pd_t
 {
 	struct ppp_pd_t pd;
 	struct log_file_t lf;
+	uint64_t tmp;
 };
 
 static int conf_color;
 static int conf_per_session;
 static char *conf_per_user_dir;
 static char *conf_per_session_dir;
+static int conf_copy;
 
 static const char* level_name[]={"  msg", "error", " warn", " info", "debug"};
 static const char* level_color[]={NORMAL_COLOR, RED_COLOR, YELLOW_COLOR, GREEN_COLOR, BLUE_COLOR};
@@ -50,175 +57,192 @@ static void *pd_key1;
 static void *pd_key2;
 static struct log_file_t *log_file;
 
-static int log_write(struct triton_md_handler_t *h);
+static mempool_t lpd_pool;
+static char *log_buf;
+
+static struct aiocb aiocb = {
+	.aio_lio_opcode = LIO_WRITE,
+	.aio_sigevent.sigev_notify = SIGEV_SIGNAL,
+	.aio_sigevent.sigev_signo = SIGIO,
+};
+
+static LIST_HEAD(lf_queue);
+static spinlock_t lf_queue_lock = SPINLOCK_INITIALIZER;
+static int lf_queue_sleeping = 1;
+
+static uint64_t temp_seq;
+
+static void send_next_chunk();
 
-static int log_file_init(struct log_file_t *lf, const char *fname)
+static void log_file_init(struct log_file_t *lf)
 {
 	spinlock_init(&lf->lock);
-	lf->sleeping = 1;
 	INIT_LIST_HEAD(&lf->msgs);
-	lf->hnd.write = log_write;
+	lf->fd = -1;
+}
 
-	lf->hnd.fd = open(fname, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR);
-	if (lf->hnd.fd < 0) {
+static int log_file_open(struct log_file_t *lf, const char *fname)
+{
+	lf->fd = open(fname, O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR);
+	if (lf->fd < 0) {
 		log_emerg("log_file: open '%s': %s\n", fname, strerror(errno));
 		return -1;
 	} 
 	
-	lseek(lf->hnd.fd, 0, SEEK_END);
+	lf->offset = lseek(lf->fd, 0, SEEK_END);
 	
-	if (fcntl(lf->hnd.fd, F_SETFL, O_NONBLOCK)) {
-			log_emerg("log_file: cann't to set nonblocking mode: %s\n", strerror(errno));
-			goto out_err;
-	}
-	
-	if (triton_context_register(&lf->ctx, NULL))
-		goto out_err;
-	triton_md_register_handler(&lf->ctx, &lf->hnd);
 	return 0;
-
-out_err:
-	close(lf->hnd.fd);
-	return -1;
 }
 
-static void set_hdr(struct log_msg_t *msg, struct ppp_t *ppp)
+static void sigio(int num, siginfo_t *si, void *uc)
 {
-	struct tm tm;
-	char timestamp[32];
+	struct log_file_t *lf;
+	int n;
 
-	localtime_r(&msg->timestamp.tv_sec, &tm);
+	lf = (struct log_file_t *)si->si_ptr;
 
-	strftime(timestamp, sizeof(timestamp), "%Y-%m-%d %H:%M:%S", &tm);
-	sprintf(msg->hdr->msg, "%s[%s]: %s: %s%s%s", conf_color ? level_color[msg->level] : "", 
-		timestamp, level_name[msg->level],
-		ppp ? ppp->ifname : "",
-		ppp ? ": " : "",
-		conf_color ? NORMAL_COLOR : "");
-	msg->hdr->len = strlen(msg->hdr->msg);
+	n = aio_return(&aiocb);
+	if (n < 0)
+		log_emerg("log_file: %s\n", strerror(aio_error(&aiocb)));
+	else if (n < aiocb.aio_nbytes)
+		log_emerg("log_file: short write %i %lu\n", n, aiocb.aio_nbytes);
+
+	spin_lock(&lf->lock);
+	lf->offset += n;
+	if (list_empty(&lf->msgs) && lf->need_free) {
+		spin_unlock(&lf->lock);
+		close(lf->fd);
+		mempool_free(lf->lpd);
+	} else
+		spin_unlock(&lf->lock);
+	
+	send_next_chunk();
 }
-static int write_chunk(int fd, struct log_chunk_t *chunk, int pos)
+
+static int dequeue_log(struct log_file_t *lf)
 {
-	int n;
+	int n, pos = 0;
+	struct log_msg_t *msg;
+	struct log_chunk_t *chunk;
 
 	while (1) {
-		n = write(fd, chunk->msg + pos, chunk->len - pos);
-		if (n < 0) {
-			if (errno == EINTR)
-				continue;
-			if (errno == EAGAIN)
-				return pos;
-			log_emerg("log_file: write: %s\n", strerror(errno));
-			break;
+		spin_lock(&lf->lock);
+		if (list_empty(&lf->msgs)) {
+			lf->queued = 0;
+			spin_unlock(&lf->lock);
+			return pos;
 		}
+		msg = list_entry(lf->msgs.next, typeof(*msg), entry);
+		list_del(&msg->entry);
+		spin_unlock(&lf->lock);
+
+		memcpy(log_buf + pos, msg->hdr->msg, msg->hdr->len);
+		n = msg->hdr->len;
+		if (pos + n > LOG_BUF_SIZE)
+			goto overrun;
+
+		list_for_each_entry(chunk, msg->chunks, entry) {
+			memcpy(log_buf + pos + n, chunk->msg, chunk->len);
+			n += chunk->len;
+			if (pos + n > LOG_BUF_SIZE)
+				goto overrun;
+		}
+
+		log_free_msg(msg);
 		pos += n;
-		if (pos == chunk->len)
-			return 0;
-	}
-	return -1;
-}
-static int write_msg(struct log_file_t *lf)
-{
-	if (!lf->cur_chunk)
-		lf->cur_chunk = lf->cur_msg->hdr;
-	
-	if (lf->cur_chunk == lf->cur_msg->hdr) {
-		lf->cur_pos = write_chunk(lf->hnd.fd, lf->cur_chunk, lf->cur_pos);
-		if (lf->cur_pos < 0)
-			goto out;
-		if (lf->cur_pos)
-			return -1;
-		lf->cur_chunk = list_entry(lf->cur_msg->chunks->next, typeof(*lf->cur_chunk), entry);
 	}
 
-	while(&lf->cur_chunk->entry != lf->cur_msg->chunks) {
-		lf->cur_pos = write_chunk(lf->hnd.fd, lf->cur_chunk, lf->cur_pos);
-		if (lf->cur_pos < 0)
-			break;
-		if (lf->cur_pos)
-			return -1;
-		lf->cur_chunk = list_entry(lf->cur_chunk->entry.next, typeof(*lf->cur_chunk), entry);
-	}
+overrun:
+	spin_lock(&lf->lock);
+	list_add(&msg->entry, &lf->msgs);
+	spin_unlock(&lf->lock);
 
-out:
-	log_free_msg(lf->cur_msg);
-	lf->cur_chunk = NULL;
-	lf->cur_msg = NULL;
-	lf->cur_pos = 0;
-	return 0;
+	spin_lock(&lf_queue_lock);
+	list_add_tail(&lf->entry, &lf_queue);
+	spin_unlock(&lf_queue_lock);
+
+	return pos;
 }
 
-static int log_write(struct triton_md_handler_t *h)
+static void send_next_chunk(void)
 {
-	struct log_file_t *lf = container_of(h, typeof(*lf), hnd);
+	struct log_file_t *lf;
 
-	if (lf->cur_msg)
-		if (write_msg(lf))
-			return 0;
+	spin_lock(&lf_queue_lock);
+	if (list_empty(&lf_queue)) {
+		lf_queue_sleeping = 1;
+		spin_unlock(&lf_queue_lock);
+		return;
+	}
+	lf = list_entry(lf_queue.next, typeof(*lf), entry);
+	list_del(&lf->entry);
+	spin_unlock(&lf_queue_lock);
 
-	while (1) {
-		spin_lock(&lf->lock);
-		if (!list_empty(&lf->msgs)) {
-			lf->cur_msg = list_entry(lf->msgs.next, typeof(*lf->cur_msg), entry);
-			list_del(&lf->cur_msg->entry);
-			spin_unlock(&lf->lock);
+	aiocb.aio_fildes = lf->fd;
+	aiocb.aio_offset = lf->offset;
+	aiocb.aio_sigevent.sigev_value.sival_ptr = lf;
+	aiocb.aio_nbytes = dequeue_log(lf);
 
-			if (write_msg(lf))
-				return 0;
-			
-			continue;
-		}
-		if (lf->need_free) {
-			spin_unlock(&lf->lock);
-			triton_md_unregister_handler(&lf->hnd);
-			close(lf->hnd.fd);
-			triton_context_unregister(&lf->ctx);
-			_free(lf->lpd);
-			return 1;
-		}
-		lf->sleeping = 1;
-		spin_unlock(&lf->lock);
-		triton_md_disable_handler(&lf->hnd, MD_MODE_WRITE);
-		return 0;
-	}
+	if (aio_write(&aiocb))
+		log_emerg("log_file: aio_write: %s\n", strerror(errno));
 }
 
-static void log_wakeup(struct log_file_t *lf)
+static void queue_lf(struct log_file_t *lf)
 {
-	if (log_write(&lf->hnd))
-		return ;
+	int r;
+
+	spin_lock(&lf_queue_lock);
+	list_add_tail(&lf->entry, &lf_queue);
+	r = lf_queue_sleeping;
+	lf_queue_sleeping = 0;
+	spin_unlock(&lf_queue_lock);
 
-	if (!lf->sleeping)
-		triton_md_enable_handler(&lf->hnd, MD_MODE_WRITE);
+	if (r)
+		send_next_chunk();
 }
 
-static void log_queue(struct log_file_t *lf, struct log_msg_t *msg)
+static void queue_log(struct log_file_t *lf, struct log_msg_t *msg)
 {
 	int r;
+
 	spin_lock(&lf->lock);
 	list_add_tail(&msg->entry, &lf->msgs);
-	r = lf->sleeping;
-	lf->sleeping = 0;
+	if (lf->fd != -1) {
+		r = lf->queued;
+		lf->queued = 1;
+	} else
+		r = 1;
 	spin_unlock(&lf->lock);
 
-	if (r)
-		triton_context_call(&lf->ctx, (void (*)(void *))log_wakeup, lf);
+	if (!r)
+		queue_lf(lf);
 }
 
-static void general_log(struct log_msg_t *msg)
+static void set_hdr(struct log_msg_t *msg, struct ppp_t *ppp)
 {
-	if (!log_file)
-		return;
-	set_hdr(msg, NULL);
-	log_queue(log_file, msg);
+	struct tm tm;
+	char timestamp[32];
+
+	localtime_r(&msg->timestamp.tv_sec, &tm);
+
+	strftime(timestamp, sizeof(timestamp), "%Y-%m-%d %H:%M:%S", &tm);
+	sprintf(msg->hdr->msg, "%s[%s]: %s: %s%s%s", conf_color ? level_color[msg->level] : "", 
+		timestamp, level_name[msg->level],
+		ppp ? ppp->ifname : "",
+		ppp ? ": " : "",
+		conf_color ? NORMAL_COLOR : "");
+	msg->hdr->len = strlen(msg->hdr->msg);
 }
 
-static void general_session_log(struct ppp_t *ppp, struct log_msg_t *msg)
+static void general_log(struct log_msg_t *msg, struct ppp_t *ppp)
 {
-	if (!log_file)
+	if (ppp && !conf_copy) {
+		log_free_msg(msg);
 		return;
+	}
+
 	set_hdr(msg, ppp);
-	log_queue(log_file, msg);
+	queue_log(log_file, msg);
 }
 
 static struct log_file_pd_t *find_pd(struct ppp_t *ppp, void *pd_key)
@@ -237,48 +261,200 @@ static struct log_file_pd_t *find_pd(struct ppp_t *ppp, void *pd_key)
 	return NULL;
 }
 
-static void session_log(struct ppp_t *ppp, struct log_msg_t *msg, void *pd_key)
+static void per_user_log(struct log_msg_t *msg, struct ppp_t *ppp)
+{
+	struct log_file_pd_t *lpd;
+
+	if (!ppp) {
+		log_free_msg(msg);
+		return;
+	}
+
+	lpd = find_pd(ppp, &pd_key1);
+
+	if (!lpd) {
+		log_free_msg(msg);
+		return;
+	}
+
+	set_hdr(msg, ppp);
+	queue_log(&lpd->lf, msg);
+}
+
+static void per_session_log(struct log_msg_t *msg, struct ppp_t *ppp)
 {
-	struct log_file_pd_t *lpd  = find_pd(ppp, pd_key);
+	struct log_file_pd_t *lpd;
+	
+	if (!ppp) {
+		log_free_msg(msg);
+		return;
+	}
 
-	if (!lpd)
+	lpd = find_pd(ppp, &pd_key2);
+
+	if (!lpd) {
+		log_free_msg(msg);
 		return;
+	}
 
 	set_hdr(msg, ppp);
-	log_queue(&lpd->lf, msg);
+	queue_log(&lpd->lf, msg);
 }
 
-static void per_user_session_log(struct ppp_t *ppp, struct log_msg_t *msg)
+static void free_lpd(struct log_file_pd_t *lpd)
 {
-	session_log(ppp, msg, &pd_key1);
+	struct log_msg_t *msg;
+
+	spin_lock(&lpd->lf.lock);
+	lpd->lf.need_free = 1;
+	if (lpd->lf.queued)
+		spin_unlock(&lpd->lf.lock);
+	else {
+		while (!list_empty(&lpd->lf.msgs)) {
+			msg = list_entry(lpd->lf.msgs.next, typeof(*msg), entry);
+			list_del(&msg->entry);
+			log_free_msg(msg);
+		}
+		if (lpd->lf.fd != -1)
+			close(lpd->lf.fd);
+		spin_unlock(&lpd->lf.lock);
+		mempool_free(lpd);
+	}
 }
 
-static void per_session_log(struct ppp_t *ppp, struct log_msg_t *msg)
+static void ev_ctrl_started(struct ppp_t *ppp)
 {
-	session_log(ppp, msg, &pd_key2);
+	struct log_file_pd_t *lpd;
+	char *fname;
+
+	if (conf_per_user_dir) {
+		lpd = mempool_alloc(lpd_pool);
+		if (!lpd) {
+			log_emerg("log_file: out of memory\n");
+			return;
+		}
+		memset(lpd, 0, sizeof(*lpd));
+		lpd->pd.key = &pd_key1;
+		log_file_init(&lpd->lf);
+		lpd->lf.lpd = lpd;
+		list_add_tail(&lpd->pd.entry, &ppp->pd_list);
+	}
+
+	if (conf_per_session_dir) {
+		lpd = mempool_alloc(lpd_pool);
+		if (!lpd) {
+			log_emerg("log_file: out of memory\n");
+			return;
+		}
+		memset(lpd, 0, sizeof(*lpd));
+		lpd->pd.key = &pd_key2;
+		log_file_init(&lpd->lf);
+		lpd->lf.lpd = lpd;
+
+		fname = _malloc(PATH_MAX);
+		if (!fname) {
+			mempool_free(lpd);
+			log_emerg("log_file: out of memory\n");
+			return;
+		}
+
+		lpd->tmp = __sync_fetch_and_add(&temp_seq, 1);
+		strcpy(fname, conf_per_session_dir);
+		strcat(fname, "/tmp");
+		sprintf(fname + strlen(fname), "%lu", lpd->tmp);
+
+		if (log_file_open(&lpd->lf, fname)) {
+			mempool_free(lpd);
+			_free(fname);
+			return;
+		}
+
+		_free(fname);
+
+		list_add_tail(&lpd->pd.entry, &ppp->pd_list);
+	}
 }
 
-static void per_user_session_start(struct ppp_t *ppp)
+static void ev_ctrl_finished(struct ppp_t *ppp)
 {
 	struct log_file_pd_t *lpd;
 	char *fname;
+
+	lpd = find_pd(ppp, &pd_key1);
+	if (lpd)
+		free_lpd(lpd);
+
+
+	lpd = find_pd(ppp, &pd_key2);
+	if (lpd) {
+		if (lpd->tmp) {
+			fname = _malloc(PATH_MAX);
+			if (fname) {
+				strcpy(fname, conf_per_session_dir);
+				strcat(fname, "/tmp");
+				sprintf(fname + strlen(fname), "%lu", lpd->tmp);
+				if (unlink(fname))
+					log_emerg("log_file: unlink '%s': %s\n", fname, strerror(errno));
+				_free(fname);
+			} else
+				log_emerg("log_file: out of memory\n");
+		}
+		free_lpd(lpd);
+	}
+}
+
+static void ev_ppp_starting(struct ppp_t *ppp)
+{
+	struct log_file_pd_t *lpd;
+	char *fname1, *fname2;
+
+	lpd = find_pd(ppp, &pd_key2);
+	if (!lpd)
+		return;
 	
-	fname = _malloc(PATH_MAX + 32);
-	if (!fname) {
+	fname1 = _malloc(PATH_MAX);
+	if (!fname1) {
 		log_emerg("log_file: out of memory\n");
 		return;
 	}
 
-	lpd = _malloc(sizeof(*lpd));
-	if (!lpd) {
+	fname2 = _malloc(PATH_MAX);
+	if (!fname2) {
 		log_emerg("log_file: out of memory\n");
-		goto out_err;
+		_free(fname1);
+		return;
+	}
+
+	strcpy(fname1, conf_per_session_dir);
+	strcat(fname1, "/tmp");
+	sprintf(fname1 + strlen(fname1), "%lu", lpd->tmp);
+
+	strcpy(fname2, conf_per_session_dir);
+	strcat(fname2, "/");
+	strcat(fname2, ppp->sessionid);
+	strcat(fname2, ".log");
+
+	if (rename(fname1, fname2))
+		log_emerg("log_file: rename '%s' to '%s': %s\n", fname1, fname2, strerror(errno));
+
+	_free(fname1);
+	_free(fname2);
+}
+
+static void ev_ppp_authorized(struct ppp_t *ppp)
+{
+	struct log_file_pd_t *lpd;
+	char *fname;
+
+	lpd = find_pd(ppp, &pd_key1);
+	if (!lpd)
+		return;
+
+	fname = _malloc(PATH_MAX);
+	if (!fname) {
+		log_emerg("log_file: out of memory\n");
+		return;
 	}
-	
-	memset(lpd, 0, sizeof(*lpd));
-	lpd->pd.key = &pd_key1;
-	lpd->lf.hnd.fd = -1;
-	lpd->lf.lpd = lpd;
 
 	strcpy(fname, conf_per_user_dir);
 	strcat(fname, "/");
@@ -293,123 +469,71 @@ static void per_user_session_start(struct ppp_t *ppp)
 	}
 	strcat(fname, ".log");
 
-	if (log_file_init(&lpd->lf, fname))
+	if (log_file_open(&lpd->lf, fname))
 		goto out_err;
-	
 
-	list_add_tail(&lpd->pd.entry, &ppp->pd_list);
 	_free(fname);
-	return;
 
-out_err:
-	_free(fname);
-	if (lpd)
-		_free(lpd);
-}
-static void per_session_start(struct ppp_t *ppp)
-{
-	struct log_file_pd_t *lpd;
-	char *fname;
-	
-	fname = _malloc(PATH_MAX + 32);
-	if (!fname) {
-		log_emerg("log_file: out of memory\n");
-		return;
-	}
-
-	lpd = _malloc(sizeof(*lpd));
-	if (!lpd) {
-		log_emerg("log_file: out of memory\n");
-		goto out_err;
+	if (!list_empty(&lpd->lf.msgs)) {
+		lpd->lf.queued = 1;
+		queue_lf(&lpd->lf);
 	}
-	
-	memset(lpd, 0, sizeof(*lpd));
-	lpd->pd.key = &pd_key2;
-	lpd->lf.hnd.fd = -1;
-	lpd->lf.lpd = lpd;
-
-	strcpy(fname, conf_per_session_dir);
-	strcat(fname, "/");
-	strcat(fname, ppp->sessionid);
-	strcat(fname, ".log");
-
 
-	if (log_file_init(&lpd->lf, fname))
-		goto out_err;
-	
-	list_add_tail(&lpd->pd.entry, &ppp->pd_list);
-	_free(fname);
 	return;
 
 out_err:
 	_free(fname);
-	if (lpd)
-		_free(lpd);
-}
-
-static void session_stop(struct ppp_t *ppp, void *pd_key)
-{
-	struct log_file_pd_t *lpd = find_pd(ppp, pd_key);
-	int r;
-
-	spin_lock(&lpd->lf.lock);
-	r = lpd->lf.sleeping;
-	lpd->lf.sleeping = 0;
-	lpd->lf.need_free = 1;
-	spin_unlock(&lpd->lf.lock);
-
-	if (r)
-		triton_context_call(&lpd->lf.ctx, (void (*)(void *))log_wakeup, &lpd->lf);
+	list_del(&lpd->pd.entry);
+	free_lpd(lpd);
 }
 
-static void per_user_session_stop(struct ppp_t *ppp)
-{
-	session_stop(ppp, &pd_key1);
-}
-
-static void per_session_stop(struct ppp_t *ppp)
-{
-	session_stop(ppp, &pd_key2);
-}
-
-static struct log_target_t target = 
+static struct log_target_t general_target = 
 {
 	.log = general_log,
 };
 
 static struct log_target_t per_user_target = 
 {
-	.session_log = per_user_session_log,
-	.session_start = per_user_session_start,
-	.session_stop = per_user_session_stop,
+	.log = per_user_log,
 };
 
 static struct log_target_t per_session_target = 
 {
-	.session_log = per_session_log,
-	.session_start = per_session_start,
-	.session_stop = per_session_stop,
+	.log = per_session_log,
 };
 
-
 static void __init init(void)
 {
 	char *opt;
-	
-	opt = conf_get_opt("log","color");
-	if (opt && atoi(opt) > 0)
-		conf_color = 1;
-	
+	struct sigaction sa = {
+		.sa_sigaction = sigio,
+		.sa_flags = SA_SIGINFO,
+	};
+
+	lpd_pool = mempool_create(sizeof(struct log_file_pd_t));
+	log_buf = malloc(LOG_BUF_SIZE);
+	aiocb.aio_buf = log_buf;
+
+	if (sigaction(SIGIO, &sa, NULL)) {
+		log_emerg("log_file: sigaction: %s\n", strerror(errno));
+		return;
+	}
+
 	opt = conf_get_opt("log", "log-file");
 	if (opt) {
-		log_file = _malloc(sizeof(*log_file));
+		log_file = malloc(sizeof(*log_file));
 		memset(log_file, 0, sizeof(*log_file));
-		if (log_file_init(log_file, opt)) {
-			_free(log_file);
-			log_file = NULL;
+		log_file_init(log_file);
+		if (log_file_open(log_file, opt)) {
+			free(log_file);
+			_exit(EXIT_FAILURE);
 		}
 	}
 	
+	opt = conf_get_opt("log","color");
+	if (opt && atoi(opt) > 0)
+		conf_color = 1;
+	
 	opt = conf_get_opt("log", "per-user-dir");
 	if (opt)
 		conf_per_user_dir = opt;
@@ -421,17 +545,22 @@ static void __init init(void)
 	opt = conf_get_opt("log", "per-session");
 	if (opt && atoi(opt) > 0)
 		conf_per_session = 1;
+	
+	opt = conf_get_opt("log", "copy");
+	if (opt && atoi(opt) > 0)
+		conf_copy = 1;
 
+	log_register_target(&general_target);
+	
 	if (conf_per_user_dir)
 		log_register_target(&per_user_target);
 	
 	if (conf_per_session_dir)
 		log_register_target(&per_session_target);
-	
-	if (log_file) {
-		if (!conf_per_user_dir && !conf_per_session_dir)
-			target.session_log = general_session_log;
-		log_register_target(&target);
-	}
+
+	triton_event_register_handler(EV_CTRL_STARTED, (triton_event_func)ev_ctrl_started);
+	triton_event_register_handler(EV_CTRL_FINISHED, (triton_event_func)ev_ctrl_finished);
+	triton_event_register_handler(EV_PPP_STARTING, (triton_event_func)ev_ppp_starting);
+	triton_event_register_handler(EV_PPP_AUTHORIZED, (triton_event_func)ev_ppp_authorized);
 }
 
diff --git a/accel-pptpd/logs/log_pgsql.c b/accel-pptpd/logs/log_pgsql.c
index f9cf7ed..393c3bd 100644
--- a/accel-pptpd/logs/log_pgsql.c
+++ b/accel-pptpd/logs/log_pgsql.c
@@ -161,13 +161,7 @@ static void queue_log(struct log_msg_t *msg)
 }
 
 
-static void general_log(struct log_msg_t *msg)
-{
-	set_hdr(msg, NULL);
-	queue_log(msg);
-}
-
-static void session_log(struct ppp_t *ppp, struct log_msg_t *msg)
+static void general_log(struct log_msg_t *msg, struct ppp_t *ppp)
 {
 	set_hdr(msg, ppp);
 	queue_log(msg);
@@ -238,7 +232,6 @@ static void start_connect_timer(struct triton_timer_t *t)
 
 static struct log_target_t target = {
 	.log = general_log,
-	.session_log = session_log,
 };
 
 static void __init init(void)
diff --git a/accel-pptpd/main.c b/accel-pptpd/main.c
index 147c248..afd6b58 100644
--- a/accel-pptpd/main.c
+++ b/accel-pptpd/main.c
@@ -14,10 +14,6 @@ static int goto_daemon;
 static char *pid_file;
 static char *conf_file;
 
-static void sigterm(int num)
-{
-}
-
 #define ARG_MAX 128
 static int parse_cmdline(char ***argv)
 {	
@@ -87,6 +83,7 @@ usage:
 int main(int argc, char **argv)
 {
 	sigset_t set;
+	int sig;
 
 	if (triton_load_modules("modules"))
 		return EXIT_FAILURE;
@@ -119,21 +116,34 @@ int main(int argc, char **argv)
 		}
 	}
 
-	signal(SIGTERM, sigterm);
-	signal(SIGPIPE, sigterm);
-	signal(SIGUSR1, sigterm);
-	
+	//signal(SIGTERM, sigterm);
+	//signal(SIGPIPE, sigterm);
+
 	triton_run();
-	
+
 	sigfillset(&set);
-	sigdelset(&set, SIGINT);
-	sigdelset(&set, SIGTERM);
+	sigdelset(&set, SIGKILL);
+	sigdelset(&set, SIGSTOP);
 	sigdelset(&set, SIGSEGV);
-	sigdelset(&set, SIGILL);
 	sigdelset(&set, SIGFPE);
+	sigdelset(&set, SIGILL);
 	sigdelset(&set, SIGBUS);
-
-	sigsuspend(&set);
+	sigdelset(&set, 35);
+	sigdelset(&set, 36);
+	sigdelset(&set, SIGIO);
+	sigdelset(&set, SIGINT);
+	pthread_sigmask(SIG_SETMASK, &set, NULL);
+
+	sigemptyset(&set);
+	//sigaddset(&set, SIGINT);
+	sigaddset(&set, SIGTERM);
+	sigaddset(&set, SIGSEGV);
+	sigaddset(&set, SIGILL);
+	sigaddset(&set, SIGFPE);
+	sigaddset(&set, SIGBUS);
+	
+	sigwait(&set, &sig);
+	printf("terminate, sig = %i\n", sig);
 	
 	triton_terminate();
 
diff --git a/accel-pptpd/radius/dict/dictionary.rfc2865 b/accel-pptpd/radius/dict/dictionary.rfc2865
index 3abe1b2..7e5bf58 100644
--- a/accel-pptpd/radius/dict/dictionary.rfc2865
+++ b/accel-pptpd/radius/dict/dictionary.rfc2865
@@ -6,7 +6,7 @@
 #	$Id: dictionary.rfc2865,v 1.3 2005/08/10 20:59:40 aland Exp $
 #
 ATTRIBUTE	User-Name				1	string
-ATTRIBUTE	User-Password				2	string encrypt=1
+ATTRIBUTE	User-Password				2	octets
 ATTRIBUTE	CHAP-Password				3	octets
 ATTRIBUTE	NAS-IP-Address				4	ipaddr
 ATTRIBUTE	NAS-Port				5	integer
diff --git a/accel-pptpd/radius/req.c b/accel-pptpd/radius/req.c
index ac41f19..6b812f1 100644
--- a/accel-pptpd/radius/req.c
+++ b/accel-pptpd/radius/req.c
@@ -173,10 +173,11 @@ out_err:
 
 static void req_wakeup(struct rad_req_t *req)
 {
-	triton_context_wakeup(req->rpd->ppp->ctrl->ctx);
+	struct triton_context_t *ctx = req->rpd->ppp->ctrl->ctx;
 	triton_timer_del(&req->timeout);
 	triton_md_unregister_handler(&req->hnd);
 	triton_context_unregister(&req->ctx);
+	triton_context_wakeup(ctx);
 }
 static int rad_req_read(struct triton_md_handler_t *h)
 {
@@ -200,6 +201,8 @@ int rad_req_wait(struct rad_req_t *req, int timeout)
 	req->timeout.expire = rad_req_timeout;
 
 	triton_context_register(&req->ctx, req->rpd->ppp);
+	req->ctx.fname=__FILE__;
+	req->ctx.line=__LINE__;
 	triton_md_register_handler(&req->ctx, &req->hnd);
 	if (triton_md_enable_handler(&req->hnd, MD_MODE_READ))
 		return -1;
diff --git a/accel-pptpd/sigchld.c b/accel-pptpd/sigchld.c
index 3843e4f..fd07c0a 100644
--- a/accel-pptpd/sigchld.c
+++ b/accel-pptpd/sigchld.c
@@ -27,19 +27,11 @@ static void* sigchld_thread(void *arg)
 	int status, sig;
 
 	sigfillset(&set);
+	sigdelset(&set, SIGKILL);
+	sigdelset(&set, SIGSTOP);
 	pthread_sigmask(SIG_BLOCK, &set, NULL);
 
 	sigemptyset(&set);
-	sigaddset(&set, SIGUSR1);
-	sigaddset(&set, SIGQUIT);
-	sigaddset(&set, SIGSEGV);
-	sigaddset(&set, SIGFPE);
-	sigaddset(&set, SIGILL);
-	sigaddset(&set, SIGBUS);
-	sigaddset(&set, SIGCHLD);
-	pthread_sigmask(SIG_UNBLOCK, &set, NULL);
-
-	sigemptyset(&set);
 	sigaddset(&set, SIGCHLD);
 	sigaddset(&set, SIGQUIT);
 
diff --git a/accel-pptpd/triton/md.c b/accel-pptpd/triton/md.c
index 06b2b30..133abe8 100644
--- a/accel-pptpd/triton/md.c
+++ b/accel-pptpd/triton/md.c
@@ -59,24 +59,16 @@ static void *md_thread(void *arg)
 	sigset_t set;
 
 	sigfillset(&set);
+	sigdelset(&set, SIGKILL);
+	sigdelset(&set, SIGSTOP);
 	pthread_sigmask(SIG_BLOCK, &set, NULL);
 
-	sigemptyset(&set);
-	sigaddset(&set, SIGQUIT);
-	sigaddset(&set, SIGSEGV);
-	sigaddset(&set, SIGFPE);
-	sigaddset(&set, SIGILL);
-	sigaddset(&set, SIGBUS);
-	sigdelset(&set, 35);
-	sigdelset(&set, 36);
-	pthread_sigmask(SIG_UNBLOCK, &set, NULL);
-
 	while(1) {
 		n = epoll_wait(epoll_fd, epoll_events, max_events, -1);
 		if (n < 0) {
 			if (errno == EINTR)
 				continue;
-			triton_log_error("md:epoll_wait: %s", strerror(errno));
+			triton_log_error("md:epoll_wait: %s\n", strerror(errno));
 			_exit(-1);
 		}
 		
@@ -152,8 +144,10 @@ int __export triton_md_enable_handler(struct triton_md_handler_t *ud, int mode)
 	else
 		r = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, h->ud->fd, &h->epoll_event);
 
-	if (r)
-		triton_log_error("md:epoll_ctl: %s",strerror(errno));
+	if (r) {
+		triton_log_error("md:epoll_ctl: %s\n",strerror(errno));
+		abort();
+	}
 
 	return r;
 }
@@ -177,8 +171,10 @@ int __export triton_md_disable_handler(struct triton_md_handler_t *ud,int mode)
 		r = epoll_ctl(epoll_fd, EPOLL_CTL_DEL, h->ud->fd, NULL);
 	}
 
-	if (r)
-		triton_log_error("md:epoll_ctl: %s",strerror(errno));
+	if (r) {
+		triton_log_error("md:epoll_ctl: %s\n",strerror(errno));
+		abort();
+	}
 
 	return r;
 }
diff --git a/accel-pptpd/triton/timer.c b/accel-pptpd/triton/timer.c
index 53abd3b..cbf2b13 100644
--- a/accel-pptpd/triton/timer.c
+++ b/accel-pptpd/triton/timer.c
@@ -60,16 +60,10 @@ void *timer_thread(void *arg)
 	sigset_t set;
 
 	sigfillset(&set);
+	sigdelset(&set, SIGKILL);
+	sigdelset(&set, SIGSTOP);
 	pthread_sigmask(SIG_BLOCK, &set, NULL);
 
-	sigemptyset(&set);
-	sigaddset(&set, SIGQUIT);
-	sigaddset(&set, SIGSEGV);
-	sigaddset(&set, SIGFPE);
-	sigaddset(&set, SIGILL);
-	sigaddset(&set, SIGBUS);
-	pthread_sigmask(SIG_UNBLOCK, &set, NULL);
-
 	while(1) {
 		n = epoll_wait(epoll_fd, epoll_events, max_events, -1);
 		if (n < 0) {
diff --git a/accel-pptpd/triton/triton.c b/accel-pptpd/triton/triton.c
index 9593064..2de2e67 100644
--- a/accel-pptpd/triton/triton.c
+++ b/accel-pptpd/triton/triton.c
@@ -8,7 +8,7 @@
 #include "triton_p.h"
 #include "memdebug.h"
 
-int thread_count = 1;
+int thread_count = 2;
 int max_events = 64;
 
 static spinlock_t threads_lock = SPINLOCK_INITIALIZER;
@@ -25,46 +25,75 @@ static int terminate;
 
 static mempool_t *ctx_pool;
 static mempool_t *call_pool;
+static mempool_t *ctx_stack_pool;
 
 __export struct triton_stat_t triton_stat;
 
 void triton_thread_wakeup(struct _triton_thread_t *thread)
 {
+	//printf("wake up thread %p\n", thread);
 	pthread_kill(thread->thread, SIGUSR1);
 }
 
 static void* triton_thread(struct _triton_thread_t *thread)
 {
 	sigset_t set;
+	int sig;
 
 	sigfillset(&set);
-	sigdelset(&set, SIGSEGV);
-	sigdelset(&set, SIGFPE);
-	sigdelset(&set, SIGILL);
-	sigdelset(&set, SIGBUS);
-	pthread_sigmask(SIG_SETMASK, &set, NULL);
+	sigdelset(&set, SIGKILL);
+	sigdelset(&set, SIGSTOP);
+	pthread_sigmask(SIG_BLOCK, &set, NULL);
 
-	sigdelset(&set, SIGUSR1);
-	sigdelset(&set, SIGQUIT);
+	sigemptyset(&set);
+	sigaddset(&set, SIGUSR1);
+	sigaddset(&set, SIGQUIT);
 
 	while (1) {
 		__sync_fetch_and_sub(&triton_stat.thread_active, 1);
-		sigsuspend(&set);
+		//printf("thread %p: enter sigwait\n", thread);
+		sigwait(&set, &sig);
+		//printf("thread %p: exit sigwait\n", thread);
 		__sync_fetch_and_add(&triton_stat.thread_active, 1);
 
 cont:
+		//printf("thread %p: ctx=%p %p\n", thread, thread->ctx, thread->ctx ? thread->ctx->thread : NULL);
 		if (thread->ctx->ud->before_switch)
 			thread->ctx->ud->before_switch(thread->ctx->ud, thread->ctx->bf_arg);
-		if (swapcontext(&thread->uctx, &thread->ctx->uctx))
-			triton_log_error("swapcontext: %s\n", strerror(errno));
-	
-		if (thread->ctx->need_free)
-			mempool_free(thread->ctx);
+
+		//printf("thread %p: switch to %p\n", thread, thread->ctx);
+		while (1) {	
+			if (swapcontext(&thread->uctx, &thread->ctx->uctx)) {
+				if (errno == EINTR)
+					continue;
+				triton_log_error("swapcontext: %s\n", strerror(errno));
+			} else
+				break;
+		}
+		//printf("thread %p: switch from %p %p\n", thread, thread->ctx, thread->ctx->thread);
+
+		if (thread->ctx->thread) {
+			spin_lock(&thread->ctx->lock);
+			if (thread->ctx->pending) {
+				spin_unlock(&thread->ctx->lock);
+				goto cont;
+			}
+			thread->ctx->thread = NULL;
+			spin_unlock(&thread->ctx->lock);
+
+			if (thread->ctx->need_free) {
+				//printf("- context %p removed\n", thread->ctx);
+				mempool_free(thread->ctx->uctx.uc_stack.ss_sp);
+				mempool_free(thread->ctx);
+			}
+		}
+
 		thread->ctx = NULL;
 
 		spin_lock(&threads_lock);
 		if (!list_empty(&ctx_queue)) {
 			thread->ctx = list_entry(ctx_queue.next, typeof(*thread->ctx), entry2);
+			//printf("thread: %p: dequeued ctx %p\n", thread, thread->ctx);
 			list_del(&thread->ctx->entry2);
 			spin_unlock(&threads_lock);
 			spin_lock(&thread->ctx->lock);
@@ -74,6 +103,7 @@ cont:
 			__sync_fetch_and_sub(&triton_stat.context_pending, 1);
 			goto cont;
 		} else {
+			//printf("thread: %p: sleeping\n", thread);
 			if (!terminate)
 				list_add(&thread->entry2, &sleep_threads);
 			spin_unlock(&threads_lock);
@@ -89,10 +119,9 @@ static void ctx_thread(struct _triton_context_t *ctx)
 	struct _triton_timer_t *t;
 	struct _triton_ctx_call_t *call;
 	uint64_t tt;
-	ucontext_t *uctx;
 
 	while (1) {
-		uctx = &ctx->thread->uctx;
+		//printf("ctx %p %p: enter\n", ctx, ctx->thread);
 		if (ctx->need_close) {
 			if (ctx->ud->close)
 				ctx->ud->close(ctx->ud);
@@ -131,11 +160,19 @@ static void ctx_thread(struct _triton_context_t *ctx)
 				call->func(call->arg);
 				mempool_free(call);
 			}
-			ctx->thread = NULL;
+			ctx->pending = 0;
 			spin_unlock(&ctx->lock);
-			
-			if (swapcontext(&ctx->uctx, uctx))
+			break;	
+		}
+
+		//printf("ctx %p %p: exit\n", ctx, ctx->thread);
+		while (1) {
+			if (swapcontext(&ctx->uctx, &ctx->thread->uctx)) {
+				if (errno == EINTR)
+					continue;
 				triton_log_error("swapcontext: %s\n", strerror(errno));
+			} else
+				break;
 		}
 	}
 }
@@ -160,6 +197,7 @@ struct _triton_thread_t *create_thread()
 
 int triton_queue_ctx(struct _triton_context_t *ctx)
 {
+	ctx->pending = 1;
 	if (ctx->thread || ctx->queued || ctx->sleeping)
 		return 0;
 
@@ -168,12 +206,14 @@ int triton_queue_ctx(struct _triton_context_t *ctx)
 		list_add_tail(&ctx->entry2, &ctx_queue);
 		spin_unlock(&threads_lock);
 		ctx->queued = 1;
+		//printf("ctx %p: queued\n", ctx);
 		__sync_fetch_and_add(&triton_stat.context_pending, 1);
 		return 0;
 	}
 
 	ctx->thread = list_entry(sleep_threads.next, typeof(*ctx->thread), entry2);
 	ctx->thread->ctx = ctx;
+	//printf("ctx %p: assigned to thread %p\n", ctx, ctx->thread);
 	list_del(&ctx->thread->entry2);
 	spin_unlock(&threads_lock);
 
@@ -204,12 +244,13 @@ int __export triton_context_register(struct triton_context_t *ud, void *bf_arg)
 	}
 
 	ctx->uctx.uc_stack.ss_size = CTX_STACK_SIZE;
-	ctx->uctx.uc_stack.ss_sp = _malloc(CTX_STACK_SIZE);
+	ctx->uctx.uc_stack.ss_sp = mempool_alloc(ctx_stack_pool);
 	if (!ctx->uctx.uc_stack.ss_sp) {
 		triton_log_error("out of memory\n");
 		_free(ctx);
 		return -1;
 	}
+	sigfillset(&ctx->uctx.uc_sigmask);
 	makecontext(&ctx->uctx, (void (*)())ctx_thread, 1, ctx);
 
 	ud->tpd = ctx;
@@ -223,6 +264,15 @@ int __export triton_context_register(struct triton_context_t *ud, void *bf_arg)
 	return 0;
 }
 
+int __export triton_context_print()
+{
+	struct _triton_context_t *ctx;
+
+	list_for_each_entry(ctx, &ctx_list, entry)
+		if (ctx->ud)
+			printf("%s:%i\n", ctx->ud->fname, ctx->ud->line);
+}
+
 void __export triton_context_unregister(struct triton_context_t *ud)
 {
 	struct _triton_context_t *ctx = (struct _triton_context_t *)ud->tpd;
@@ -244,14 +294,6 @@ void __export triton_context_unregister(struct triton_context_t *ud)
 	}
 	if (!list_empty(&ctx->timers)) {
 		triton_log_error("BUG:ctx:triton_unregister_ctx: timers is not empty");
-		{
-			struct _triton_timer_t *t;
-			while(!list_empty(&ctx->timers)) {
-				t = list_entry(ctx->timers.next, typeof(*t), entry);
-				t->ud->expire(t->ud);
-				list_del(&t->entry);
-			}
-		}
 		abort();
 	}
 	if (!list_empty(&ctx->pending_timers)) {
@@ -259,8 +301,6 @@ void __export triton_context_unregister(struct triton_context_t *ud)
 		abort();
 	}
 
-	_free(ctx->uctx.uc_stack.ss_sp);
-
 	ctx->need_free = 1;
 	spin_lock(&ctx_list_lock);
 	list_del(&ctx->entry);
@@ -278,18 +318,28 @@ void __export triton_context_schedule(struct triton_context_t *ud)
 	ctx->thread = NULL;
 	spin_unlock(&ctx->lock);
 
-	if (swapcontext(&ctx->uctx, uctx))
-		triton_log_error("swaswpntext: %s\n", strerror(errno));
+	while (1) {
+		if (swapcontext(&ctx->uctx, uctx)) {
+			if (errno == EINTR)
+				continue;
+			triton_log_error("swaswpntext: %s\n", strerror(errno));
+		} else
+			break;
+	}
 	
 	__sync_fetch_and_add(&triton_stat.context_sleeping, 1);
 }
 
-void __export triton_context_wakeup(struct triton_context_t *ud)
+int __export triton_context_wakeup(struct triton_context_t *ud)
 {
 	struct _triton_context_t *ctx = (struct _triton_context_t *)ud->tpd;
 	int r;
 
 	spin_lock(&ctx->lock);
+	if (!ctx->sleeping) {
+		spin_unlock(&ctx->lock);
+		return -1;
+	}
 	ctx->sleeping = 0;
 	r = triton_queue_ctx(ctx);
 	spin_unlock(&ctx->lock);
@@ -298,6 +348,8 @@ void __export triton_context_wakeup(struct triton_context_t *ud)
 		triton_thread_wakeup(ctx->thread);
 	
 	__sync_fetch_and_sub(&triton_stat.context_sleeping, 1);
+
+	return 0;
 }
 
 int __export triton_context_call(struct triton_context_t *ud, void (*func)(void *), void *arg)
@@ -327,12 +379,9 @@ int __export triton_init(const char *conf_file)
 {
 	ctx_pool = mempool_create(sizeof(struct _triton_context_t));
 	call_pool = mempool_create(sizeof(struct _triton_ctx_call_t));
+	ctx_stack_pool = mempool_create(CTX_STACK_SIZE);
 
 	default_ctx = _malloc(sizeof(*default_ctx));
-	if (!default_ctx) {
-		fprintf(stderr,"cann't allocate memory\n");
-		return -1;
-	}
 	triton_context_register(default_ctx, NULL);	
 
 	if (conf_load(conf_file))
@@ -365,6 +414,11 @@ void __export triton_run()
 {
 	struct _triton_thread_t *t;
 	int i;
+	char *opt;
+
+	opt = conf_get_opt("core", "thread-count");
+	if (opt && atoi(opt) > 0)
+		thread_count = atoi(opt);
 
 	for(i = 0; i < thread_count; i++) {
 		t = create_thread();
diff --git a/accel-pptpd/triton/triton.h b/accel-pptpd/triton/triton.h
index c3c9d2a..6f70275 100644
--- a/accel-pptpd/triton/triton.h
+++ b/accel-pptpd/triton/triton.h
@@ -8,7 +8,9 @@
 
 struct triton_context_t
 {
-	const void *tpd; // triton private data, don't touch!
+	const void *tpd; // triton private data, don't touch
+	const char *fname;
+	int line;
 	void (*close)(struct triton_context_t*);
 	void (*free)(struct triton_context_t*);
 	void (*before_switch)(struct triton_context_t *ctx, void *arg);
@@ -69,7 +71,7 @@ extern struct triton_stat_t triton_stat;
 int triton_context_register(struct triton_context_t *, void *arg);
 void triton_context_unregister(struct triton_context_t *);
 void triton_context_schedule(struct triton_context_t *);
-void triton_context_wakeup(struct triton_context_t *);
+int triton_context_wakeup(struct triton_context_t *);
 int triton_context_call(struct triton_context_t *, void (*func)(void *), void *arg);
 
 #define MD_MODE_READ 1
diff --git a/accel-pptpd/triton/triton_p.h b/accel-pptpd/triton/triton_p.h
index ec2eb84..7c0615f 100644
--- a/accel-pptpd/triton/triton_p.h
+++ b/accel-pptpd/triton/triton_p.h
@@ -42,6 +42,7 @@ struct _triton_context_t
 	int sleeping:1;
 	int need_close:1;
 	int need_free:1;
+	int pending:1;
 
 	struct triton_context_t *ud;
 	void *bf_arg;