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From: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, peter.crosthwaite@xilinx.com,
	alex.bennee@linaro.org, mark.burton@greensocs.com,
	real@ispras.ru, batuzovk@ispras.ru,
	maria.klimushenkova@ispras.ru, pavel.dovgaluk@ispras.ru,
	pbonzini@redhat.com, afaerber@suse.de, fred.konrad@greensocs.com
Subject: [Qemu-devel] [RFC PATCH v9 12/23] timer: replace time() with QEMU_CLOCK_HOST
Date: Wed, 18 Feb 2015 14:56:52 +0300	[thread overview]
Message-ID: <20150218115651.4176.24899.stgit@PASHA-ISP> (raw)
In-Reply-To: <20150218115534.4176.12578.stgit@PASHA-ISP>

This patch replaces time() function calls with calls to
qemu_clock_get_ns(QEMU_CLOCK_HOST). It makes such requests deterministic
in record/replay mode of icount.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
---
 vl.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/vl.c b/vl.c
index 8c8f142..00161f4 100644
--- a/vl.c
+++ b/vl.c
@@ -710,13 +710,17 @@ void vm_start(void)
 /***********************************************************/
 /* real time host monotonic timer */
 
+static time_t qemu_time(void)
+{
+    return qemu_clock_get_ms(QEMU_CLOCK_HOST) / 1000;
+}
+
 /***********************************************************/
 /* host time/date access */
 void qemu_get_timedate(struct tm *tm, int offset)
 {
-    time_t ti;
+    time_t ti = qemu_time();
 
-    time(&ti);
     ti += offset;
     if (rtc_date_offset == -1) {
         if (rtc_utc)
@@ -744,7 +748,7 @@ int qemu_timedate_diff(struct tm *tm)
     else
         seconds = mktimegm(tm) + rtc_date_offset;
 
-    return seconds - time(NULL);
+    return seconds - qemu_time();
 }
 
 static void configure_rtc_date_offset(const char *startdate, int legacy)
@@ -782,7 +786,7 @@ static void configure_rtc_date_offset(const char *startdate, int legacy)
                             "'2006-06-17T16:01:21' or '2006-06-17'\n");
             exit(1);
         }
-        rtc_date_offset = time(NULL) - rtc_start_date;
+        rtc_date_offset = qemu_time() - rtc_start_date;
     }
 }
 

  parent reply	other threads:[~2015-02-18 11:56 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-18 11:55 [Qemu-devel] [RFC PATCH v9 00/23] Deterministic replay core Pavel Dovgalyuk
2015-02-18 11:55 ` [Qemu-devel] [RFC PATCH v9 01/23] i386: partial revert of interrupt poll fix Pavel Dovgalyuk
2015-02-18 11:55 ` [Qemu-devel] [RFC PATCH v9 02/23] replay: global variables and function stubs Pavel Dovgalyuk
2015-02-18 11:55 ` [Qemu-devel] [RFC PATCH v9 03/23] sysemu: system functions for replay Pavel Dovgalyuk
2015-02-18 11:56 ` [Qemu-devel] [RFC PATCH v9 04/23] replay: internal functions for replay log Pavel Dovgalyuk
2015-02-18 12:43   ` Paolo Bonzini
2015-02-18 11:56 ` [Qemu-devel] [RFC PATCH v9 05/23] replay: introduce mutex to protect the " Pavel Dovgalyuk
2015-02-18 11:56 ` [Qemu-devel] [RFC PATCH v9 06/23] replay: introduce icount event Pavel Dovgalyuk
2015-02-18 13:49   ` Paolo Bonzini
2015-02-18 14:14   ` Paolo Bonzini
2015-02-18 11:56 ` [Qemu-devel] [RFC PATCH v9 07/23] cpu-exec: allow temporary disabling icount Pavel Dovgalyuk
2015-02-18 11:56 ` [Qemu-devel] [RFC PATCH v9 08/23] cpu: replay instructions sequence Pavel Dovgalyuk
2015-02-18 12:50   ` Paolo Bonzini
2015-02-18 13:48   ` Paolo Bonzini
2015-02-18 11:56 ` [Qemu-devel] [RFC PATCH v9 09/23] replay: interrupts and exceptions Pavel Dovgalyuk
2015-02-18 13:54   ` Paolo Bonzini
2015-02-18 14:14   ` Paolo Bonzini
2015-02-18 11:56 ` [Qemu-devel] [RFC PATCH v9 10/23] replay: asynchronous events infrastructure Pavel Dovgalyuk
2015-02-18 11:56 ` [Qemu-devel] [RFC PATCH v9 11/23] replay: recording and replaying clock ticks Pavel Dovgalyuk
2015-02-18 14:13   ` Paolo Bonzini
2015-02-18 11:56 ` Pavel Dovgalyuk [this message]
2015-02-18 13:04   ` [Qemu-devel] [RFC PATCH v9 12/23] timer: replace time() with QEMU_CLOCK_HOST Paolo Bonzini
2015-02-18 11:56 ` [Qemu-devel] [RFC PATCH v9 13/23] replay: shutdown event Pavel Dovgalyuk
2015-02-18 11:57 ` [Qemu-devel] [RFC PATCH v9 14/23] replay: checkpoints Pavel Dovgalyuk
2015-02-18 14:14   ` Paolo Bonzini
2015-02-18 11:57 ` [Qemu-devel] [RFC PATCH v9 15/23] aio: replace stack of bottom halves with queue Pavel Dovgalyuk
2015-02-18 13:06   ` Paolo Bonzini
2015-02-18 13:10   ` Paolo Bonzini
2015-02-18 11:57 ` [Qemu-devel] [RFC PATCH v9 16/23] replay: bottom halves Pavel Dovgalyuk
2015-02-18 11:57 ` [Qemu-devel] [RFC PATCH v9 17/23] replay: replay aio requests Pavel Dovgalyuk
2015-02-18 11:57 ` [Qemu-devel] [RFC PATCH v9 18/23] replay: thread pool Pavel Dovgalyuk
2015-02-18 11:57 ` [Qemu-devel] [RFC PATCH v9 19/23] typedef: add typedef for QemuOpts Pavel Dovgalyuk
2015-02-18 13:11   ` Paolo Bonzini
2015-02-18 11:57 ` [Qemu-devel] [RFC PATCH v9 20/23] replay: initialization and deinitialization Pavel Dovgalyuk
2015-02-18 13:14   ` Paolo Bonzini
2015-02-18 11:57 ` [Qemu-devel] [RFC PATCH v9 21/23] replay: replay blockers for devices Pavel Dovgalyuk
2015-02-18 11:57 ` [Qemu-devel] [RFC PATCH v9 22/23] replay: command line options Pavel Dovgalyuk
2015-02-18 13:18   ` Paolo Bonzini
2015-02-20  8:02     ` Pavel Dovgaluk
     [not found]     ` <23594.561199616$1424419399@news.gmane.org>
2015-02-20 10:28       ` Paolo Bonzini
2015-02-18 11:57 ` [Qemu-devel] [RFC PATCH v9 23/23] replay: recording of the user input Pavel Dovgalyuk
2015-02-18 14:19 ` [Qemu-devel] [RFC PATCH v9 00/23] Deterministic replay core Paolo Bonzini
2015-02-27  9:23   ` Pavel Dovgaluk
2015-02-27 13:07     ` Paolo Bonzini

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