static void
VMToolsLogWrapper(GLogLevelFlags level,
const char *fmt,
va_list args)
{
if (!gLogInitialized && !IS_FATAL(level)) {
/*
* Avoid logging without initialization because
* it leads to spamming of the console output.
* Fatal messages are exception.
*/
return;
}
VMTools_AcquireLogStateLock();
if (gLoggingStopped) {
/* This is to avoid nested logging in vmxLogger */
VMTools_ReleaseLogStateLock();
return;
}
VMTools_ReleaseLogStateLock();
if (gPanicCount == 0) {
char *msg = Str_Vasprintf(NULL, fmt, args);
if (msg != NULL) {
g_log(gLogDomain, level, "%s", msg);
free(msg);
}
} else {
/* Try to avoid malloc() since we're aborting. */
gchar msg[256];
Str_Vsnprintf(msg, sizeof msg, fmt, args);
VMToolsLog(gLogDomain, level, msg, gDefaultData);
}
}
static void
VMToolsLogMsg(gpointer _data, gpointer userData)
{
LogEntry *entry = _data;
GlibLogger *logger = entry->handler->logger;
gboolean usedSyslog = FALSE;
if (logger != NULL) {
logger->logfn(entry->domain, entry->level, entry->msg, logger);
usedSyslog = entry->handler->isSysLog;
} else if (gErrorData->logger != NULL) {
gErrorData->logger->logfn(entry->domain, entry->level, entry->msg,
gErrorData->logger);
usedSyslog = gErrorData->isSysLog;
}
/*
* Any fatal errors need to go to syslog no matter what.
*/
if (!usedSyslog && IS_FATAL(entry->level) && gErrorSyslog) {
gErrorSyslog->logger->logfn(entry->domain, entry->level, entry->msg,
gErrorSyslog->logger);
}
VMToolsFreeLogEntry(entry);
}
static void
VMToolsLog(const gchar *domain,
GLogLevelFlags level,
const gchar *message,
gpointer _data)
{
LogHandler *data = _data;
if (SHOULD_LOG(level, data)) {
gchar *msg;
data = data->inherited ? gDefaultData : data;
msg = VMToolsLogFormat(message, domain, level, data);
if (data->logger != NULL) {
data->logger->logfn(domain, level, msg, data->logger);
} else if (gErrorData->logger != NULL) {
gErrorData->logger->logfn(domain, level, msg, gErrorData->logger);
}
g_free(msg);
}
if (IS_FATAL(level)) {
VMToolsLogPanic();
}
}
static void
VMToolsLog(const gchar *domain,
GLogLevelFlags level,
const gchar *message,
gpointer _data)
{
LogHandler *data = _data;
if (SHOULD_LOG(level, data)) {
LogEntry *entry;
data = data->inherited ? gDefaultData : data;
entry = g_malloc0(sizeof(LogEntry));
if (entry) {
entry->domain = domain ? g_strdup(domain) : NULL;
if (domain && !entry->domain) {
VMToolsLogPanic();
}
entry->handler = data;
entry->level = level;
}
if (gLogIOSuspended && data->needsFileIO) {
if (gMaxCacheEntries == 0) {
/* No way to log at this point, drop it */
VMToolsFreeLogEntry(entry);
gDroppedLogCount++;
goto exit;
}
entry->msg = VMToolsLogFormat(message, domain, level, data, TRUE);
/*
* Cache the log message
*/
if (!gCachedLogs) {
/*
* If gMaxCacheEntries > 1K, start with 1/4th size
* to avoid frequent allocations
*/
gCachedLogs = g_ptr_array_sized_new(gMaxCacheEntries < 1024 ?
gMaxCacheEntries :
gMaxCacheEntries/4);
if (!gCachedLogs) {
VMToolsLogPanic();
}
/*
* Some builds use glib version 2.16.4 which does not
* support g_ptr_array_set_free_func function
*/
}
/*
* We don't expect logging to be suspended for a long time,
* so we can avoid putting a cap on cache size. However, we
* still have a default cap of 4K messages, just to be safe.
*/
if (gCachedLogs->len < gMaxCacheEntries) {
g_ptr_array_add(gCachedLogs, entry);
} else {
/*
* Cache is full, drop the oldest log message. This is not
* very efficient but we don't expect this to be a common
* case anyway.
*/
LogEntry *oldest = g_ptr_array_remove_index(gCachedLogs, 0);
VMToolsFreeLogEntry(oldest);
gDroppedLogCount++;
g_ptr_array_add(gCachedLogs, entry);
}
} else {
entry->msg = VMToolsLogFormat(message, domain, level, data, FALSE);
VMToolsLogMsg(entry, NULL);
}
}
exit:
if (IS_FATAL(level)) {
VMToolsLogPanic();
}
}