Move code around to satisfy t/stest linkage
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/gettime-thread.c b/gettime-thread.c
new file mode 100644
index 0000000..da40904
--- /dev/null
+++ b/gettime-thread.c
@@ -0,0 +1,78 @@
+#include <unistd.h>
+#include <math.h>
+#include <sys/time.h>
+#include <time.h>
+
+#include "fio.h"
+#include "smalloc.h"
+
+struct timeval *fio_tv;
+int fio_gtod_offload = 0;
+int fio_gtod_cpu = -1;
+static pthread_t gtod_thread;
+
+void fio_gtod_init(void)
+{
+ fio_tv = smalloc(sizeof(struct timeval));
+ assert(fio_tv);
+}
+
+static void fio_gtod_update(void)
+{
+ gettimeofday(fio_tv, NULL);
+}
+
+static void *gtod_thread_main(void *data)
+{
+ struct fio_mutex *mutex = data;
+
+ fio_mutex_up(mutex);
+
+ /*
+ * As long as we have jobs around, update the clock. It would be nice
+ * to have some way of NOT hammering that CPU with gettimeofday(),
+ * but I'm not sure what to use outside of a simple CPU nop to relax
+ * it - we don't want to lose precision.
+ */
+ while (threads) {
+ fio_gtod_update();
+ nop;
+ }
+
+ return NULL;
+}
+
+int fio_start_gtod_thread(void)
+{
+ struct fio_mutex *mutex;
+ pthread_attr_t attr;
+ int ret;
+
+ mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
+ if (!mutex)
+ return 1;
+
+ pthread_attr_init(&attr);
+ pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
+ ret = pthread_create(>od_thread, &attr, gtod_thread_main, NULL);
+ pthread_attr_destroy(&attr);
+ if (ret) {
+ log_err("Can't create gtod thread: %s\n", strerror(ret));
+ goto err;
+ }
+
+ ret = pthread_detach(gtod_thread);
+ if (ret) {
+ log_err("Can't detatch gtod thread: %s\n", strerror(ret));
+ goto err;
+ }
+
+ dprint(FD_MUTEX, "wait on startup_mutex\n");
+ fio_mutex_down(mutex);
+ dprint(FD_MUTEX, "done waiting on startup_mutex\n");
+err:
+ fio_mutex_remove(mutex);
+ return ret;
+}
+
+