mmap(win32): avoid copy-on-write when it is unnecessary

diff --git a/git-p4.py b/git-p4.py
index 7a9dd6ad74580f648813a97c5012e6ef4f837896..825b9f32d5540ab1f8d373fff2d3bf79caabee00 100755 (executable)
--- a/git-p4.py
+++ b/git-p4.py
@@ -253,8 +253,8 @@ def p4_add(f):
 def p4_delete(f):
     p4_system(["delete", wildcard_encode(f)])
 
-def p4_edit(f):
-    p4_system(["edit", wildcard_encode(f)])
+def p4_edit(f, *options):
+    p4_system(["edit"] + list(options) + [wildcard_encode(f)])
 
 def p4_revert(f):
     p4_system(["revert", wildcard_encode(f)])
@@ -822,39 +822,37 @@ def p4ChangesForPaths(depotPaths, changeRange, requestedBlockSize):
                 die("cannot use --changes-block-size with non-numeric revisions")
             block_size = None
 
-    # Accumulate change numbers in a dictionary to avoid duplicates
-    changes = {}
+    changes = []
 
-    for p in depotPaths:
-        # Retrieve changes a block at a time, to prevent running
-        # into a MaxResults/MaxScanRows error from the server.
+    # Retrieve changes a block at a time, to prevent running
+    # into a MaxResults/MaxScanRows error from the server.
 
-        while True:
-            cmd = ['changes']
+    while True:
+        cmd = ['changes']
 
-            if block_size:
-                end = min(changeEnd, changeStart + block_size)
-                revisionRange = "%d,%d" % (changeStart, end)
-            else:
-                revisionRange = "%s,%s" % (changeStart, changeEnd)
+        if block_size:
+            end = min(changeEnd, changeStart + block_size)
+            revisionRange = "%d,%d" % (changeStart, end)
+        else:
+            revisionRange = "%s,%s" % (changeStart, changeEnd)
 
+        for p in depotPaths:
             cmd += ["%s...@%s" % (p, revisionRange)]
 
-            for line in p4_read_pipe_lines(cmd):
-                changeNum = int(line.split(" ")[1])
-                changes[changeNum] = True
+        # Insert changes in chronological order
+        for line in reversed(p4_read_pipe_lines(cmd)):
+            changes.append(int(line.split(" ")[1]))
 
-            if not block_size:
-                break
+        if not block_size:
+            break
 
-            if end >= changeEnd:
-                break
+        if end >= changeEnd:
+            break
 
-            changeStart = end + 1
+        changeStart = end + 1
 
-    changelist = changes.keys()
-    changelist.sort()
-    return changelist
+    changes = sorted(changes)
+    return changes
 
 def p4PathStartsWith(path, prefix):
     # This method tries to remedy a potential mixed-case issue:
@@ -1458,6 +1456,8 @@ def prepareSubmitTemplate(self):
            Remove lines in the Files section that show changes to files
            outside the depot path we're committing into."""
 
+        [upstream, settings] = findUpstreamBranchPoint()
+
         template = ""
         inFilesSection = False
         for line in p4_read_pipe_lines(['change', '-o']):
@@ -1470,8 +1470,13 @@ def prepareSubmitTemplate(self):
                     lastTab = path.rfind("\t")
                     if lastTab != -1:
                         path = path[:lastTab]
-                        if not p4PathStartsWith(path, self.depotPath):
-                            continue
+                        if settings.has_key('depot-paths'):
+                            if not [p for p in settings['depot-paths']
+                                    if p4PathStartsWith(path, p)]:
+                                continue
+                        else:
+                            if not p4PathStartsWith(path, self.depotPath):
+                                continue
                 else:
                     inFilesSection = False
             else:
@@ -1549,6 +1554,7 @@ def applyCommit(self, id):
 
         diff = read_pipe_lines("git diff-tree -r %s \"%s^\" \"%s\"" % (self.diffOpts, id, id))
         filesToAdd = set()
+        filesToChangeType = set()
         filesToDelete = set()
         editedFiles = set()
         pureRenameCopy = set()
@@ -1609,6 +1615,8 @@ def applyCommit(self, id):
                     os.unlink(dest)
                     filesToDelete.add(src)
                 editedFiles.add(dest)
+            elif modifier == "T":
+                filesToChangeType.add(path)
             else:
                 die("unknown modifier %s for %s" % (modifier, path))
 
@@ -1668,6 +1676,8 @@ def applyCommit(self, id):
         #
         system(applyPatchCmd)
 
+        for f in filesToChangeType:
+            p4_edit(f, "-t", "auto")
         for f in filesToAdd:
             p4_add(f)
         for f in filesToDelete: