Implement QueryPerformanceCounter() and QueryPerformanceFrequency()
for both Unix and Windows.
This has been tested in both Unix and Windows in an application using
TimerLib.
Signed-off-by: Derek Lin <derek.l...@hpe.com>
Signed-off-by: Kitty Chen <kitty.c...@hpe.com>
---
EmulatorPkg/Unix/Host/EmuThunk.c | 40 +++++++++++++++++++++-----------
EmulatorPkg/Win/Host/WinThunk.c | 10 +++++---
2 files changed, 34 insertions(+), 16 deletions(-)
diff --git a/EmulatorPkg/Unix/Host/EmuThunk.c b/EmulatorPkg/Unix/Host/EmuThunk.c
index 1e9dc99187..92703d3088 100644
--- a/EmulatorPkg/Unix/Host/EmuThunk.c
+++ b/EmulatorPkg/Unix/Host/EmuThunk.c
@@ -11,6 +11,7 @@
Copyright (c) 2004 - 2019, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2008 - 2011, Apple Inc. All rights reserved.<BR>
+(C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -33,6 +34,7 @@ struct timeval settimer_timeval;
UINTN settimer_callback = 0;
BOOLEAN gEmulatorInterruptEnabled = FALSE;
+UINT64 mPerformanceFrequency = 0;
UINTN
@@ -236,16 +238,6 @@ SecInterruptEanbled (void)
return gEmulatorInterruptEnabled;
}
-
-UINT64
-QueryPerformanceFrequency (
- VOID
- )
-{
- // Hard code to nanoseconds
- return 1000000000ULL;
-}
-
UINT64
QueryPerformanceCounter (
VOID
@@ -274,12 +266,34 @@ QueryPerformanceCounter (
return (Start * sTimebaseInfo.numer) / sTimebaseInfo.denom;
#else
- // Need to figure out what to do for Linux?
- return 0;
+ int status;
+ struct timespec time;
+ status = clock_gettime(CLOCK_REALTIME, &time);
+ return MultU64x32 (time.tv_sec, 1000000000) + time.tv_nsec;
+
#endif
}
-
+UINT64
+QueryPerformanceFrequency (
+ VOID
+ )
+{
+ UINT64 Counter1;
+ UINT64 Counter2;
+ if (mPerformanceFrequency) {
+ return mPerformanceFrequency;
+ }
+ //
+ // Don't know how to query performance frequency in Linux,
+ // so instead, sleep 0.1 second and calculate it.
+ //
+ Counter1 = QueryPerformanceCounter();
+ SecSleep (100* 1000 * 1000);
+ Counter2 = QueryPerformanceCounter();
+ mPerformanceFrequency = (Counter2-Counter1) * 10;
+ return mPerformanceFrequency;
+}
VOID
SecSleep (
diff --git a/EmulatorPkg/Win/Host/WinThunk.c b/EmulatorPkg/Win/Host/WinThunk.c
index a77be2a64b..41b5cffe18 100644
--- a/EmulatorPkg/Win/Host/WinThunk.c
+++ b/EmulatorPkg/Win/Host/WinThunk.c
@@ -1,6 +1,7 @@
/**@file
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+(C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
Module Name:
@@ -438,8 +439,9 @@ SecQueryPerformanceFrequency (
VOID
)
{
- // Hard code to nanoseconds
- return 1000000000ULL;
+ UINT64 Frequency;
+ QueryPerformanceFrequency ((LARGE_INTEGER *) &Frequency);
+ return Frequency;
}
UINT64
@@ -447,7 +449,9 @@ SecQueryPerformanceCounter (
VOID
)
{
- return 0;
+ UINT64 PerformanceCount;
+ QueryPerformanceCounter ((LARGE_INTEGER *) &PerformanceCount);
+ return PerformanceCount;
}
--
2.17.0.windows.1
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