Make POSIX time routines work on Linux by providing a POSIX-conformant version of TimeTicks::Now() to replace the Mach-specific one used on the Mac.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@664 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 139 deletions

diff --git a/base/time_mac.cc b/base/time_mac.cc
deleted file mode 100644
index bd4be21..0000000
--- a/base/time_mac.cc
+++ /dev/null
@@ -1,139 +0,0 @@
-// Copyright 2008, 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.
-
-#include "base/time.h"
-
-#include <mach/mach_time.h>
-#include <sys/time.h>
-#include <time.h>
-#include "base/basictypes.h"
-#include "base/logging.h"
-
-// The Time routines in this file use standard POSIX routines, or almost-
-// standard routines in the case of timegm.
-// The TimeTicks routines are Mach-specific.
-
-// Time -----------------------------------------------------------------------
-
-// The internal representation of Time uses time_t directly, so there is no
-// offset.  The epoch is 1970-01-01 00:00:00 UTC.
-// static
-const int64 Time::kTimeTToMicrosecondsOffset = GG_INT64_C(0);
-
-// static
-int64 Time::CurrentWallclockMicroseconds() {
-  struct timeval tv;
-  struct timezone tz = { 0, 0 };  // UTC
-  if (gettimeofday(&tv, &tz) != 0) {
-    DCHECK(0) << "Could not determine time of day";
-  }
-  // Combine seconds and microseconds in a 64-bit field containing microseconds
-  // since the epoch.  That's enough for nearly 600 centuries.
-  return tv.tv_sec * GG_UINT64_C(1000000) + tv.tv_usec;
-}
-
-// static
-Time Time::FromExploded(bool is_local, const Exploded& exploded) {
-  struct tm timestruct;
-  timestruct.tm_sec    = exploded.second;
-  timestruct.tm_min    = exploded.minute;
-  timestruct.tm_hour   = exploded.hour;
-  timestruct.tm_mday   = exploded.day_of_month;
-  timestruct.tm_mon    = exploded.month - 1;
-  timestruct.tm_year   = exploded.year - 1900;
-  timestruct.tm_wday   = exploded.day_of_week;  // mktime/timegm ignore this
-  timestruct.tm_yday   = 0;     // mktime/timegm ignore this
-  timestruct.tm_isdst  = -1;    // attempt to figure it out
-  timestruct.tm_gmtoff = 0;     // not a POSIX field, so mktime/timegm ignore
-  timestruct.tm_zone   = NULL;  // not a POSIX field, so mktime/timegm ignore
-
-  time_t seconds;
-  if (is_local)
-    seconds = mktime(&timestruct);
-  else
-    seconds = timegm(&timestruct);
-  DCHECK(seconds >= 0) << "mktime/timegm could not convert from exploded";
-
-  uint64 milliseconds = seconds * kMillisecondsPerSecond + exploded.millisecond;
-  return Time(milliseconds * kMicrosecondsPerMillisecond);
-}
-
-void Time::Explode(bool is_local, Exploded* exploded) const {
-  // Time stores times with microsecond resolution, but Exploded only carries
-  // millisecond resolution, so begin by being lossy.
-  uint64 milliseconds = us_ / kMicrosecondsPerMillisecond;
-  time_t seconds = milliseconds / kMillisecondsPerSecond;
-
-  struct tm timestruct;
-  if (is_local)
-    localtime_r(&seconds, &timestruct);
-  else
-    gmtime_r(&seconds, &timestruct);
-
-  exploded->year         = timestruct.tm_year + 1900;
-  exploded->month        = timestruct.tm_mon + 1;
-  exploded->day_of_week  = timestruct.tm_wday;
-  exploded->day_of_month = timestruct.tm_mday;
-  exploded->hour         = timestruct.tm_hour;
-  exploded->minute       = timestruct.tm_min;
-  exploded->second       = timestruct.tm_sec;
-  exploded->millisecond  = milliseconds % kMillisecondsPerSecond;
-}
-
-// TimeTicks ------------------------------------------------------------------
-
-// static
-TimeTicks TimeTicks::Now() {
-  static bool has_timebase_info = false;
-  static mach_timebase_info_data_t timebase_info;
-  if (!has_timebase_info) {
-    has_timebase_info = mach_timebase_info(&timebase_info) == KERN_SUCCESS;
-  }
-  DCHECK(has_timebase_info) << "Could not determine system tick rate";
-
-  // mach_absolute_time is it when it comes to ticks on the Mac.  Other calls
-  // with less precision (such as TickCount) just call through to
-  // mach_absolute_time.
-
-  // timebase_info converts absolute time tick units into nanoseconds.  Divide
-  // by 1000 to get microseconds up front to stave off overflows.
-  uint64_t absolute_micro = mach_absolute_time() / 1000 * timebase_info.numer /
-                                                          timebase_info.denom;
-
-  // Don't bother with the rollover handling that the Windows version does.
-  // With numer and denom = 1 (the expected case), the 64-bit absolute time
-  // reported in nanoseconds is enough to last nearly 585 years.
-
-  return TimeTicks(absolute_micro);
-}
-
-// static
-TimeTicks TimeTicks::UnreliableHighResNow() {
-  return Now();
-}