mercurial: switch to util.timer for all interval timings

util.timer is now the best available interval timer, at the expense of not
having a known epoch. Let's use it whenever the epoch is irrelevant.

contrib/hgperf

@@ -55,17 +55,15 b' except ImportError:'
 import mercurial.util
 import mercurial.dispatch
 
-import time
-
 def timer(func, title=None):
     results = []
-    begin = time.time()
+    begin = mercurial.util.timer()
     count = 0
     while True:
         ostart = os.times()
-        cstart = time.time()
+        cstart = mercurial.util.timer()
         r = func()
-        cstop = time.time()
+        cstop = mercurial.util.timer()
         ostop = os.times()
         count += 1
         a, b = ostart, ostop

contrib/perf.py

@@ -190,13 +190,13 b' def stub_timer(fm, func, title=None):'
 
 def _timer(fm, func, title=None):
     results = []
-    begin = time.time()
+    begin = util.timer()
     count = 0
     while True:
         ostart = os.times()
-        cstart = time.time()
+        cstart = util.timer()
         r = func()
-        cstop = time.time()
+        cstop = util.timer()
         ostop = os.times()
         count += 1
         a, b = ostart, ostop

mercurial/branchmap.py

@@ -9,7 +9,6 b' from __future__ import absolute_import'
 
 import array
 import struct
-import time
 
 from .node import (
     bin,
@@ -21,6 +20,7 b' from . import ('
     encoding,
     error,
     scmutil,
+    util,
 )
 
 array = array.array
@@ -261,7 +261,7 b' class branchcache(dict):'
         missing heads, and a generator of nodes that are strictly a superset of
         heads missing, this function updates self to be correct.
         """
-        starttime = time.time()
+        starttime = util.timer()
         cl = repo.changelog
         # collect new branch entries
         newbranches = {}
@@ -314,7 +314,7 b' class branchcache(dict):'
                     self.tiprev = tiprev
         self.filteredhash = scmutil.filteredhash(repo, self.tiprev)
 
-        duration = time.time() - starttime
+        duration = util.timer() - starttime
         repo.ui.log('branchcache', 'updated %s branch cache in %.4f seconds\n',
                     repo.filtername, duration)
 

mercurial/dispatch.py

@@ -123,7 +123,7 b' def dispatch(req):'
         return -1
 
     msg = ' '.join(' ' in a and repr(a) or a for a in req.args)
-    starttime = time.time()
+    starttime = util.timer()
     ret = None
     try:
         ret = _runcatch(req)
@@ -135,7 +135,7 b' def dispatch(req):'
                 raise
         ret = -1
     finally:
-        duration = time.time() - starttime
+        duration = util.timer() - starttime
         req.ui.flush()
         req.ui.log("commandfinish", "%s exited %s after %0.2f seconds\n",
                    msg, ret or 0, duration)

mercurial/hook.py

@@ -9,7 +9,6 b' from __future__ import absolute_import'
 
 import os
 import sys
-import time
 
 from .i18n import _
 from . import (
@@ -88,7 +87,7 b' def _pythonhook(ui, repo, name, hname, f'
                 % (hname, funcname))
 
     ui.note(_("calling hook %s: %s\n") % (hname, funcname))
-    starttime = time.time()
+    starttime = util.timer()
 
     try:
         r = obj(ui=ui, repo=repo, hooktype=name, **args)
@@ -106,7 +105,7 b' def _pythonhook(ui, repo, name, hname, f'
         ui.traceback()
         return True, True
     finally:
-        duration = time.time() - starttime
+        duration = util.timer() - starttime
         ui.log('pythonhook', 'pythonhook-%s: %s finished in %0.2f seconds\n',
                name, funcname, duration)
     if r:
@@ -118,7 +117,7 b' def _pythonhook(ui, repo, name, hname, f'
 def _exthook(ui, repo, name, cmd, args, throw):
     ui.note(_("running hook %s: %s\n") % (name, cmd))
 
-    starttime = time.time()
+    starttime = util.timer()
     env = {}
 
     # make in-memory changes visible to external process
@@ -145,7 +144,7 b' def _exthook(ui, repo, name, cmd, args, '
         cwd = pycompat.getcwd()
     r = ui.system(cmd, environ=env, cwd=cwd)
 
-    duration = time.time() - starttime
+    duration = util.timer() - starttime
     ui.log('exthook', 'exthook-%s: %s finished in %0.2f seconds\n',
            name, cmd, duration)
     if r:

mercurial/profiling.py

@@ -8,7 +8,6 b''
 from __future__ import absolute_import, print_function
 
 import contextlib
-import time
 
 from .i18n import _
 from . import (
@@ -66,7 +65,7 b' def flameprofile(ui, fp):'
     collapse_recursion = True
     thread = flamegraph.ProfileThread(fp, 1.0 / freq,
                                       filter_, collapse_recursion)
-    start_time = time.clock()
+    start_time = util.timer()
     try:
         thread.start()
         yield
@@ -74,7 +73,7 b' def flameprofile(ui, fp):'
         thread.stop()
         thread.join()
         print('Collected %d stack frames (%d unique) in %2.2f seconds.' % (
-            time.clock() - start_time, thread.num_frames(),
+            util.timer() - start_time, thread.num_frames(),
             thread.num_frames(unique=True)))
 
 @contextlib.contextmanager

mercurial/repair.py

@@ -12,7 +12,6 b' import errno'
 import hashlib
 import stat
 import tempfile
-import time
 
 from .i18n import _
 from .node import short
@@ -905,10 +904,10 b' def _upgraderepo(ui, srcrepo, dstrepo, r'
     # the operation nearly instantaneous and atomic (at least in well-behaved
     # environments).
     ui.write(_('replacing store...\n'))
-    tstart = time.time()
+    tstart = util.timer()
     util.rename(srcrepo.spath, backupvfs.join('store'))
     util.rename(dstrepo.spath, srcrepo.spath)
-    elapsed = time.time() - tstart
+    elapsed = util.timer() - tstart
     ui.write(_('store replacement complete; repository was inconsistent for '
                '%0.1fs\n') % elapsed)
 

mercurial/streamclone.py

@@ -8,7 +8,6 b''
 from __future__ import absolute_import
 
 import struct
-import time
 
 from .i18n import _
 from . import (
@@ -297,7 +296,7 b' def consumev1(repo, fp, filecount, bytec'
                        (filecount, util.bytecount(bytecount)))
         handled_bytes = 0
         repo.ui.progress(_('clone'), 0, total=bytecount, unit=_('bytes'))
-        start = time.time()
+        start = util.timer()
 
         # TODO: get rid of (potential) inconsistency
         #
@@ -340,7 +339,7 b' def consumev1(repo, fp, filecount, bytec'
             # streamclone-ed file at next access
             repo.invalidate(clearfilecache=True)
 
-        elapsed = time.time() - start
+        elapsed = util.timer() - start
         if elapsed <= 0:
             elapsed = 0.001
         repo.ui.progress(_('clone'), None)

mercurial/tags.py

@@ -14,7 +14,6 b' from __future__ import absolute_import'
 
 import array
 import errno
-import time
 
 from .node import (
     bin,
@@ -344,7 +343,7 b' def _readtagcache(ui, repo):'
         # potentially expensive search.
         return ([], {}, valid, None, True)
 
-    starttime = time.time()
+    starttime = util.timer()
 
     # Now we have to lookup the .hgtags filenode for every new head.
     # This is the most expensive part of finding tags, so performance
@@ -359,7 +358,7 b' def _readtagcache(ui, repo):'
 
     fnodescache.write()
 
-    duration = time.time() - starttime
+    duration = util.timer() - starttime
     ui.log('tagscache',
            '%d/%d cache hits/lookups in %0.4f '
            'seconds\n',

mercurial/util.py

@@ -2797,13 +2797,13 b' def timed(func):'
     '''
 
     def wrapper(*args, **kwargs):
-        start = time.time()
+        start = timer()
         indent = 2
         _timenesting[0] += indent
         try:
             return func(*args, **kwargs)
         finally:
-            elapsed = time.time() - start
+            elapsed = timer() - start
             _timenesting[0] -= indent
             stderr.write('%s%s: %s\n' %
                          (' ' * _timenesting[0], func.__name__,