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Refactor pending_cb_message_t into a type with proper functions

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Also, rename it.
This commit is contained in:
Nick Mathewson 2014-09-10 22:35:16 -04:00
parent 01800ea1e4
commit 15a318b49a
1 changed files with 35 additions and 14 deletions
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49
src/common/log.c
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@ -117,15 +117,19 @@ static int syslog_count = 0;
/** Represents a log message that we are going to send to callback-driven
* loggers once we can do so in a non-reentrant way. */
typedef struct pending_cb_message_t {
typedef struct pending_log_message_t {
int severity; /**< The severity of the message */
log_domain_mask_t domain; /**< The domain of the message */
char *msg; /**< The content of the message */
} pending_cb_message_t;
} pending_log_message_t;
/** Log messages waiting to be replayed onto callback-based logs */
static smartlist_t *pending_cb_messages = NULL;
/** Log messages waiting to be replayed once the logging system is initialized.
*/
static smartlist_t *pending_startup_messages = NULL;
/** Lock the log_mutex to prevent others from changing the logfile_t list */
#define LOCK_LOGS() STMT_BEGIN \
tor_mutex_acquire(&log_mutex); \
@ -329,6 +333,27 @@ format_msg(char *buf, size_t buf_len,
return end_of_prefix;
}
/* Create a new pending_log_message_t with appropriate values */
static pending_log_message_t *
pending_log_message_new(int severity, log_domain_mask_t domain, const char *msg)
{
pending_log_message_t *m = tor_malloc(sizeof(pending_log_message_t));
m->severity = severity;
m->domain = domain;
m->msg = tor_strdup(msg);
return m;
}
/** Release all storage held by <b>msg</b>. */
static void
pending_log_message_free(pending_log_message_t *msg)
{
if (!msg)
return;
tor_free(msg->msg);
tor_free(msg);
}
/** Helper: sends a message to the appropriate logfiles, at loglevel
* <b>severity</b>. If provided, <b>funcname</b> is prepended to the
* message. The actual message is derived as from tor_snprintf(format,ap).
@ -401,12 +426,8 @@ logv,(int severity, log_domain_mask_t domain, const char *funcname,
} else if (lf->callback) {
if (domain & LD_NOCB) {
if (!callbacks_deferred && pending_cb_messages) {
pending_cb_message_t *msg = tor_malloc(sizeof(pending_cb_message_t));
msg->severity = severity;
msg->domain = domain;
msg->msg = tor_strdup(end_of_prefix);
smartlist_add(pending_cb_messages, msg);
smartlist_add(pending_cb_messages,
pending_log_message_new(severity,domain,end_of_prefix));
callbacks_deferred = 1;
}
} else {
@ -739,9 +760,8 @@ logs_free_all(void)
}
tor_free(appname);
SMARTLIST_FOREACH(messages, pending_cb_message_t *, msg, {
tor_free(msg->msg);
tor_free(msg);
SMARTLIST_FOREACH(messages, pending_log_message_t *, msg, {
pending_log_message_free(msg);
});
smartlist_free(messages);
@ -847,6 +867,8 @@ init_logging(void)
}
if (pending_cb_messages == NULL)
pending_cb_messages = smartlist_new();
if (pending_startup_messages == NULL)
pending_startup_messages = smartlist_new();
}
/** Set whether we report logging domains as a part of our log messages.
@ -932,7 +954,7 @@ flush_pending_log_callbacks(void)
messages = pending_cb_messages;
pending_cb_messages = smartlist_new();
do {
SMARTLIST_FOREACH_BEGIN(messages, pending_cb_message_t *, msg) {
SMARTLIST_FOREACH_BEGIN(messages, pending_log_message_t *, msg) {
const int severity = msg->severity;
const int domain = msg->domain;
for (lf = logfiles; lf; lf = lf->next) {
@ -942,8 +964,7 @@ flush_pending_log_callbacks(void)
}
lf->callback(severity, domain, msg->msg);
}
tor_free(msg->msg);
tor_free(msg);
pending_log_message_free(msg);
} SMARTLIST_FOREACH_END(msg);
smartlist_clear(messages);