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changed logging to use references

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personal/stbuehler/wip
Thomas Porzelt 15 years ago
parent 9ed64ee1fc
commit f5fdc41644
4 changed files with 165 additions and 72 deletions
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7
src/base.h
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@ -30,7 +30,10 @@ struct server {
gboolean exiting;
GMutex *mutex;
GArray *logs;
gboolean rotate_logs;
GHashTable *logs;
struct log_t *log_stderr;
struct log_t *log_syslog;
GAsyncQueue *log_queue;
GThread *log_thread;
};
@ -47,7 +50,7 @@ struct connection {
GMutex *mutex;
guint log_ndx;
struct log_t *log;
gint log_level;
};

198
src/log.c
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@ -34,19 +34,18 @@ gboolean log_write_(server *srv, connection *con, log_level_t log_level, const g
va_list ap;
GString *log_line;
log_t *log;
guint log_ndx;
log_entry_t *log_entry;
log_level_t log_level_want;
if (con != NULL) {
/* get log index from connection */
g_mutex_lock(con->mutex);
log_ndx = con->log_ndx;
log = con->log;
log_level_want = con->log_level;
g_mutex_unlock(con->mutex);
}
else {
log_ndx = 0;
log = srv->log_stderr;
log_level_want = LOG_LEVEL_DEBUG;
}
@ -54,18 +53,13 @@ gboolean log_write_(server *srv, connection *con, log_level_t log_level, const g
if (log_level < log_level_want)
return TRUE;
/* get fd from server */
g_mutex_lock(srv->mutex);
log = g_array_index(srv->logs, log_t *, log_ndx);
g_mutex_unlock(srv->mutex);
log_line = g_string_sized_new(0);
va_start(ap, fmt);
g_string_vprintf(log_line, fmt, ap);
va_end(ap);
/* check if last message for this log was the same */
if (log->fd == log->lastmsg_fd && g_string_equal(log->lastmsg, log_line)) {
if (g_string_equal(log->lastmsg, log_line)) {
log->lastmsg_count++;
return TRUE;
}
@ -85,71 +79,50 @@ gboolean log_write_(server *srv, connection *con, log_level_t log_level, const g
log_entry = g_slice_new(log_entry_t);
log_entry->fd = log->fd;
log_entry->log = log;
log_entry->msg = log_line;
log_ref(log);
g_async_queue_push(srv->log_queue, log_entry);
return TRUE;
}
log_t *log_open_file(const gchar* filename) {
gint fd;
log_t *log;
fd = open(filename, O_RDWR | O_CREAT | O_APPEND, 0660);
if (fd == -1)
return NULL;
log = g_slice_new0(log_t);
log->fd = fd;
log->lastmsg = g_string_new("hubba bubba");
return log;
}
void log_free(log_t *log) {
close(log->fd);
g_string_free(log->lastmsg, TRUE);
}
gpointer log_thread(server *srv) {
GAsyncQueue *queue;
gboolean exiting;
log_t *log;
log_entry_t *log_entry;
GTimeVal *timeout;
GString *msg;
gssize bytes_written;
gssize write_res;
queue = srv->log_queue;
while (TRUE) {
/* check if we need to exit */
g_mutex_lock(srv->mutex);
exiting = srv->exiting;
g_mutex_unlock(srv->mutex);
if (exiting)
break;
log_entry = g_async_queue_pop(srv->log_queue);
/* 1 second timeout */
g_get_current_time(timeout);
g_time_val_add(timeout, 1000 * 1000 * 1);
log_entry = g_async_queue_timed_pop(srv->log_queue, timeout);
/* lighty is exiting, end logging thread */
if (srv->exiting)
break;
if (srv->rotate_logs) {
g_hash_table_foreach(srv->logs, (GHFunc) log_rotate, NULL);
srv->rotate_logs = FALSE;
}
if (log_entry == NULL)
continue;
log = log_entry->log;
msg = log_entry->msg;
bytes_written = 0;
while (bytes_written < (gssize)log_entry->msg->len) {
write_res = write(log_entry->fd, log_entry->msg->str + bytes_written, log_entry->msg->len - bytes_written);
while (bytes_written < (gssize)msg->len) {
write_res = write(log->fd, msg->str + bytes_written, msg->len - bytes_written);
assert(write_res <= (gssize) log_entry->msg->len);
assert(write_res <= (gssize) msg->len);
/* write() failed, check why */
if (write_res == -1) {
@ -159,32 +132,120 @@ gpointer log_thread(server *srv) {
continue;
}
g_printerr("could not write to log: %s\n", log_entry->msg->str);
g_printerr("could not write to log: %s\n", msg->str);
}
else {
bytes_written += write_res;
assert(bytes_written <= (gssize) log_entry->msg->len);
assert(bytes_written <= (gssize) msg->len);
}
}
g_string_free(log_entry->msg, TRUE);
g_string_free(msg, TRUE);
g_slice_free(log_entry_t, log_entry);
log_unref(srv, log);
}
return NULL;
}
void log_init(server *srv) {
void log_rotate(gchar * path, log_t *log, gpointer UNUSED_PARAM(user_data)) {
switch (log->type) {
case LOG_TYPE_FILE:
close(log->fd);
log->fd = open(log->path->str, O_RDWR | O_CREAT | O_APPEND, 0660);
if (log->fd == -1) {
g_printerr("failed to reopen log: %s\n", path);
assert(NULL); /* TODO */
}
break;
case LOG_TYPE_STDERR:
break;
case LOG_TYPE_PIPE:
case LOG_TYPE_SYSLOG:
/* TODO */
assert(NULL);
}
}
void log_ref(log_t *log) {
log->refcount++;
}
void log_unref(server *srv, log_t *log) {
if (--log->refcount == 0)
log_free(srv, log);
}
log_t *log_new(server *srv, log_type_t type, GString *path) {
log_t *log;
gint fd;
g_mutex_lock(srv->mutex);
log = g_hash_table_lookup(srv->logs, path->str);
/* log already open, inc refcount */
if (log != NULL)
{
log->refcount++;
g_mutex_unlock(srv->mutex);
return log;
}
switch (type) {
case LOG_TYPE_STDERR:
fd = STDERR_FILENO;
break;
case LOG_TYPE_FILE:
fd = open(path->str, O_RDWR | O_CREAT | O_APPEND, 0660);
break;
case LOG_TYPE_PIPE:
case LOG_TYPE_SYSLOG:
/* TODO */
assert(NULL);
}
if (fd == -1) {
g_printerr("failed to open log: %s %d", strerror(errno), errno);
return NULL;
}
log = g_slice_new0(log_t);
log->lastmsg = g_string_sized_new(0);
log->fd = fd;
log->path = path;
log->refcount = 1;
g_mutex_unlock(srv->mutex);
return log;
}
void log_free(server *srv, log_t *log) {
g_mutex_lock(srv->mutex);
if (log->type == LOG_TYPE_FILE || log->type == LOG_TYPE_PIPE)
close(log->fd);
g_hash_table_remove(srv->logs, log->path);
g_string_free(log->path, TRUE);
g_string_free(log->lastmsg, TRUE);
g_slice_free(log_t, log);
g_mutex_unlock(srv->mutex);
}
void log_init(server *srv) {
GError *err = NULL;
GString *str;
srv->logs = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, (GDestroyNotify) log_free);
srv->log_queue = g_async_queue_new();
/* first entry in srv->logs is the plain good old stderr */
log = g_slice_new(log_t);
log->fd = STDERR_FILENO;
log->lastmsg = g_string_sized_new(0);
log->lastmsg_count = 0;
log->lastmsg_fd = -1;
g_array_append_val(srv->logs, log);
str = g_string_new_len(CONST_STR_LEN("stderr"));
srv->log_stderr = log_new(srv, LOG_TYPE_STDERR, str);
srv->log_syslog = NULL;
srv->log_thread = g_thread_create((GThreadFunc)log_thread, srv, TRUE, &err);
@ -194,4 +255,23 @@ void log_init(server *srv) {
}
}
log_t *log_open_file(const gchar* filename) {
gint fd;
log_t *log;
fd = open(filename, O_RDWR | O_CREAT | O_APPEND, 0660);
if (fd == -1)
return NULL;
log = g_slice_new0(log_t);
log->fd = fd;
log->lastmsg = g_string_new("hubba bubba");
return log;
}

22
src/log.h
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@ -80,7 +80,17 @@ typedef enum {
LOG_LEVEL_ERROR
} log_level_t;
typedef enum {
LOG_TYPE_STDERR,
LOG_TYPE_FILE,
LOG_TYPE_PIPE,
LOG_TYPE_SYSLOG
} log_type_t;
struct log_t {
log_type_t type;
GString *path;
guint refcount;
gint fd;
GString *lastmsg;
gint lastmsg_fd;
@ -88,12 +98,20 @@ struct log_t {
};
struct log_entry_t {
gint fd;
log_t *log;
GString *msg;
};
log_t *log_open_file(const gchar* filename);
void log_free(log_t *log);
log_t *log_new(server *srv, log_type_t type, GString *path);
void log_free(server *srv, log_t *log);
void log_ref(log_t *log);
void log_unref(server *srv, log_t *log);
void log_rotate(gchar *path, log_t *log, gpointer user_data);
gpointer log_thread(server *srv);
void log_init(server *srv);
gboolean log_write_(server *srv, connection *con, log_level_t log_level, const gchar *fmt, ...);

10
src/server.c
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@ -9,10 +9,6 @@ server* server_new() {
srv->options = g_hash_table_new(g_str_hash, g_str_equal);
srv->mutex = g_mutex_new();
srv->logs = g_array_new(FALSE, FALSE, sizeof(log_t));
srv->log_queue = g_async_queue_new();
srv->exiting = FALSE;
return srv;
}
@ -25,11 +21,7 @@ void server_free(server* srv) {
g_mutex_free(srv->mutex);
/* free logs */
for (guint i; i < srv->logs->len; i++) {
log_t *log = &g_array_index(srv->logs, log_t, i);
log_free(log);
}
g_array_free(srv->logs, TRUE);
g_hash_table_destroy(srv->logs);
g_async_queue_unref(srv->log_queue);

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