[dpdk-dev] [PATCH v4 1/3] eal/windows: add timespec_get shim for MinGW
Dmitry Kozlyuk
dmitry.kozliuk at gmail.com
Fri Apr 16 00:10:53 CEST 2021
MinGW-w64 does not currently implement C11 timespec_get.
Add an internal shim until this is fixed on MinGW side.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk at gmail.com>
Acked-by: Jie Zhou <jizh at linux.microsoft.com>
Acked-by: Nick Connolly <nick.connolly at mayadata.io>
---
lib/librte_eal/windows/include/rte_os_shim.h | 32 ++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/lib/librte_eal/windows/include/rte_os_shim.h b/lib/librte_eal/windows/include/rte_os_shim.h
index f40fb62d1d..e50895fd83 100644
--- a/lib/librte_eal/windows/include/rte_os_shim.h
+++ b/lib/librte_eal/windows/include/rte_os_shim.h
@@ -3,7 +3,10 @@
#ifndef _RTE_OS_SHIM_
#define _RTE_OS_SHIM_
+#include <time.h>
+
#include <rte_os.h>
+#include <rte_windows.h>
/**
* @file
@@ -33,4 +36,33 @@
#define IPPROTO_SCTP 132
#endif
+#ifdef RTE_TOOLCHAIN_GCC
+
+#define TIME_UTC 1
+
+static inline int
+rte_timespec_get(struct timespec *now, int base)
+{
+ /* 100ns ticks from 1601-01-01 to 1970-01-01 */
+ static const uint64_t EPOCH = 116444736000000000ULL;
+ static const uint64_t TICKS_PER_SEC = 10000000;
+ static const uint64_t NS_PER_TICK = 100;
+
+ FILETIME ft;
+ uint64_t ticks;
+
+ if (base != TIME_UTC)
+ return 0;
+
+ GetSystemTimePreciseAsFileTime(&ft);
+ ticks = ((uint64_t)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
+ ticks -= EPOCH;
+ now->tv_sec = ticks / TICKS_PER_SEC;
+ now->tv_nsec = (ticks - now->tv_sec * TICKS_PER_SEC) * NS_PER_TICK;
+ return base;
+}
+
+#define timespec_get(ts, base) rte_timespec_get(ts, base)
+
+#endif /* RTE_TOOLCHAIN_GCC */
#endif /* _RTE_OS_SHIM_ */
--
2.29.3
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