aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/core/lib/support/time_win32.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/core/lib/support/time_win32.c')
-rw-r--r--src/core/lib/support/time_win32.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/src/core/lib/support/time_win32.c b/src/core/lib/support/time_win32.c
new file mode 100644
index 0000000000..a6ac003fb8
--- /dev/null
+++ b/src/core/lib/support/time_win32.c
@@ -0,0 +1,110 @@
+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/* Win32 code for gpr time support. */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WIN32
+
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <limits.h>
+#include <process.h>
+#include <sys/timeb.h>
+
+#include "src/core/lib/support/block_annotate.h"
+#include "src/core/lib/support/time_precise.h"
+
+static LARGE_INTEGER g_start_time;
+static double g_time_scale;
+
+void gpr_time_init(void) {
+ LARGE_INTEGER frequency;
+ QueryPerformanceFrequency(&frequency);
+ QueryPerformanceCounter(&g_start_time);
+ g_time_scale = 1.0 / (double)frequency.QuadPart;
+}
+
+gpr_timespec gpr_now(gpr_clock_type clock) {
+ gpr_timespec now_tv;
+ LONGLONG diff;
+ struct _timeb now_tb;
+ LARGE_INTEGER timestamp;
+ double now_dbl;
+ now_tv.clock_type = clock;
+ switch (clock) {
+ case GPR_CLOCK_REALTIME:
+ _ftime_s(&now_tb);
+ now_tv.tv_sec = (int64_t)now_tb.time;
+ now_tv.tv_nsec = now_tb.millitm * 1000000;
+ break;
+ case GPR_CLOCK_MONOTONIC:
+ case GPR_CLOCK_PRECISE:
+ QueryPerformanceCounter(&timestamp);
+ diff = timestamp.QuadPart - g_start_time.QuadPart;
+ now_dbl = (double)diff * g_time_scale;
+ now_tv.tv_sec = (int64_t)now_dbl;
+ now_tv.tv_nsec = (int32_t)((now_dbl - (double)now_tv.tv_sec) * 1e9);
+ break;
+ case GPR_TIMESPAN:
+ abort();
+ break;
+ }
+ return now_tv;
+}
+
+void gpr_sleep_until(gpr_timespec until) {
+ gpr_timespec now;
+ gpr_timespec delta;
+ int64_t sleep_millis;
+
+ for (;;) {
+ /* We could simplify by using clock_nanosleep instead, but it might be
+ * slightly less portable. */
+ now = gpr_now(until.clock_type);
+ if (gpr_time_cmp(until, now) <= 0) {
+ return;
+ }
+
+ delta = gpr_time_sub(until, now);
+ sleep_millis =
+ delta.tv_sec * GPR_MS_PER_SEC + delta.tv_nsec / GPR_NS_PER_MS;
+ GPR_ASSERT((sleep_millis >= 0) && (sleep_millis <= INT_MAX));
+ GRPC_SCHEDULING_START_BLOCKING_REGION;
+ Sleep((DWORD)sleep_millis);
+ GRPC_SCHEDULING_END_BLOCKING_REGION;
+ }
+}
+
+#endif /* GPR_WIN32 */