New upstream version 18.11-rc1

[deb_dpdk.git] / lib / librte_eal / common / eal_common_timer.c

diff --git a/lib/librte_eal/common/eal_common_timer.c b/lib/librte_eal/common/eal_common_timer.c
index 2e2b770..dcf26bf 100644 (file)
--- a/lib/librte_eal/common/eal_common_timer.c
+++ b/lib/librte_eal/common/eal_common_timer.c
@@ -7,9 +7,11 @@
 #include <unistd.h>
 #include <inttypes.h>
 #include <sys/types.h>
+#include <time.h>
 #include <errno.h>
 
 #include <rte_common.h>
+#include <rte_compat.h>
 #include <rte_log.h>
 #include <rte_cycles.h>
 #include <rte_pause.h>
@@ -31,6 +33,28 @@ rte_delay_us_block(unsigned int us)
                rte_pause();
 }
 
+void __rte_experimental
+rte_delay_us_sleep(unsigned int us)
+{
+       struct timespec wait[2];
+       int ind = 0;
+
+       wait[0].tv_sec = 0;
+       if (us >= US_PER_S) {
+               wait[0].tv_sec = us / US_PER_S;
+               us -= wait[0].tv_sec * US_PER_S;
+       }
+       wait[0].tv_nsec = 1000 * us;
+
+       while (nanosleep(&wait[ind], &wait[1 - ind]) && errno == EINTR) {
+               /*
+                * Sleep was interrupted. Flip the index, so the 'remainder'
+                * will become the 'request' for a next call.
+                */
+               ind = 1 - ind;
+       }
+}
+
 uint64_t
 rte_get_tsc_hz(void)
 {