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List:       dpdk-dev
Subject:    [dpdk-dev] [PATCH v9 04/10] eal/Windows: add clock_gettime on Windows
From:       Jie Zhou <jizh () linux ! microsoft ! com>
Date:       2021-04-30 17:52:36
Message-ID: 1619805162-10684-5-git-send-email-jizh () linux ! microsoft ! com
[Download RAW message or body]

Add clock_gettime on Windows in rte_os_shim.h

Signed-off-by: Jie Zhou <jizh@microsoft.com>
Signed-off-by: Jie Zhou <jizh@linux.microsoft.com>
---
 app/test-pmd/config.c                 |  1 +
 lib/eal/windows/include/rte_os_shim.h | 38 +++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index e189062ef..0e86ed02f 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -205,6 +205,7 @@ nic_stats_display(portid_t port_id)
 	       "%-"PRIu64"\n", stats.opackets, stats.oerrors, stats.obytes);
 
 	diff_ns = 0;
+
 	if (clock_gettime(CLOCK_TYPE_ID, &cur_time) == 0) {
 		uint64_t ns;
 
diff --git a/lib/eal/windows/include/rte_os_shim.h b/lib/eal/windows/include/rte_os_shim.h
index e60f27400..ec1087290 100644
--- a/lib/eal/windows/include/rte_os_shim.h
+++ b/lib/eal/windows/include/rte_os_shim.h
@@ -75,4 +75,42 @@ rte_timespec_get(struct timespec *now, int base)
 
 #endif /* RTE_TOOLCHAIN_GCC */
 
+/* Identifier for system-wide realtime clock. */
+#define CLOCK_REALTIME                  0
+/* Monotonic system-wide clock. */
+#define CLOCK_MONOTONIC                 1
+/* High-resolution timer from the CPU. */
+#define CLOCK_PROCESS_CPUTIME_ID        2
+/* Thread-specific CPU-time clock. */
+#define CLOCK_THREAD_CPUTIME_ID         3
+
+#define NS_PER_SEC 1E9
+
+typedef int clockid_t;
+
+static inline int
+rte_clock_gettime(clockid_t clock_id, struct timespec *tp)
+{
+	LARGE_INTEGER pf, pc;
+	LONGLONG nsec;
+	switch (clock_id) {
+	case CLOCK_REALTIME:
+		if (timespec_get(tp, TIME_UTC) != TIME_UTC)
+			return -1;
+		return 0;
+	case CLOCK_MONOTONIC:
+		if (QueryPerformanceFrequency(&pf) == 0)
+			return -1;
+		if (QueryPerformanceCounter(&pc) == 0)
+			return -1;
+		nsec = pc.QuadPart * NS_PER_SEC / pf.QuadPart;
+		tp->tv_sec = nsec / NS_PER_SEC;
+		tp->tv_nsec = nsec - tp->tv_sec * NS_PER_SEC;
+		return 0;
+	default:
+		return -1;
+	}
+}
+#define clock_gettime(clock_id, tp) rte_clock_gettime(clock_id, tp)
+
 #endif /* _RTE_OS_SHIM_ */
-- 
2.30.0.vfs.0.2

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