diff options
Diffstat (limited to 'util/log.c')
| -rw-r--r-- | util/log.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/util/log.c b/util/log.c index 417d16ec66..953a66b5a8 100644 --- a/util/log.c +++ b/util/log.c @@ -24,8 +24,10 @@ #include "qapi/error.h" #include "qemu/cutils.h" #include "trace/control.h" +#include "qemu/thread.h" static char *logfilename; +static QemuMutex qemu_logfile_mutex; FILE *qemu_logfile; int qemu_loglevel; static int log_append = 0; @@ -49,6 +51,11 @@ int qemu_log(const char *fmt, ...) return ret; } +static void __attribute__((__constructor__)) qemu_logfile_init(void) +{ + qemu_mutex_init(&qemu_logfile_mutex); +} + static bool log_uses_own_buffers; /* enable or disable low levels log */ @@ -70,7 +77,9 @@ void qemu_set_log(int log_flags) if (qemu_loglevel && (!is_daemonized() || logfilename)) { need_to_open_file = true; } + qemu_mutex_lock(&qemu_logfile_mutex); if (qemu_logfile && !need_to_open_file) { + qemu_mutex_unlock(&qemu_logfile_mutex); qemu_log_close(); } else if (!qemu_logfile && need_to_open_file) { if (logfilename) { @@ -105,6 +114,7 @@ void qemu_set_log(int log_flags) #endif log_append = 1; } + qemu_mutex_unlock(&qemu_logfile_mutex); } } @@ -240,12 +250,14 @@ void qemu_log_flush(void) /* Close the log file */ void qemu_log_close(void) { + qemu_mutex_lock(&qemu_logfile_mutex); if (qemu_logfile) { if (qemu_logfile != stderr) { fclose(qemu_logfile); } qemu_logfile = NULL; } + qemu_mutex_unlock(&qemu_logfile_mutex); } const QEMULogItem qemu_log_items[] = { |