dirs._addpath: don't mutate Python strings after exposing them (issue4589) One of the rules of Python strings is that they're immutable. dirs._addpath breaks this assumption for performance, which is fine as long as it is done safely -- once a string is no longer internal-only it shouldn't be mutated. Unfortunately, we weren't being safe here -- we were mutating 'key' even after adding it to a dictionary. This only really affects other C code that reads strings, so it's somewhat hard to write a test for this without poking into the internal representation of the string via ctypes or similar. There is currently no C code that reads the output of the string, but there will likely be some soon as the bug indicates. There's no significant difference in performance.

parsers: check for memory allocation overflows more carefully

parsers.c: avoid implicit conversion loses integer precision warning This warning is raised by Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn) and was introduced in 670aaee7931c

dirstate.walk: don't report same file stat multiple times dirstate.walk() generates pairs of filename and a stat-like object. After "hg mv foo Foo", it generates one pair for "foo" and one for "Foo", as it should. However, on case-insensitive file systems, when it tries to stat to get the disk state as well, it gets the same stat result for both names. This confuses at least scmutil._interestingfiles(), making it think that "foo" was forgotten rather than removed. That, in turn, makes "hg addremove" add "foo" back, resulting in both cases in the dirstate, as reported in issue4590. This change only takes care of the "if unknown" branch. A similar fix should perhaps be applied to the other branch.

repoview: avoid processing the same rev twice in _getstatichidden If a rev had multiple children, it would be added to the heap multiple times. We now ensure it is added only once.

repoview: skip public parent earlier in _getstatichidden Public changeset have nothing to offer regarding hidden changeset. Lets not add them to the heap at all.

repoview: directly skip public head in _getstatichidden Public heads have nothing to offer regarding hidden stuff, let's skip them.

repoview: simplify process in _getstatichidden Since all children are processed before their parents, we can apply the following algorithm: For each rev (descending order): * If I'm still hidden, no children will block me, * If I'm not hidden, I must remove my parent from the hidden set, This allows us to dynamically change the set of 'hidden' revisions, dropping the need for the 'actuallyhidden' dictionary and the 'blocked' boolean in the queue. As before, we start iterating from all heads and stop at the first public changesets. This ensures the hidden computation is 'O(not public())' instead of 'O(len(min(not public()):))'.

repoview: use a heap in _getstatichidden Since we want to process all non-public changesets from top to bottom, a heap seems more appropriate. This will ensure any revision is processed after all its children, opening the way to code simplification.

repoview: update documentation of _getstatichidden In 2f7cb6e6acdd, the function name, role and return was changed. But the documentation was not. This fixes it.

ssl: resolve symlink before checking for Apple python executable (issue4588) test-https.t was broken at 07fafcd4bc74 if /usr/bin/pythonX.Y is used on Mac OS X. If python executable is not named as "python", run-tests.py creates a symlink and hghave uses it. On the other hand, the installed hg executable knows the real path to the system Python. Therefore, there was an inconsistency that hghave said it was not an Apple python but hg knew it was.

test-subrepo-recursion: fix output on non-hardlink systems There's a slight bug present where a topic doesn't get closed when it should. This isn't a regression, so I've made a note in the test file.

test-subrepo-recursion: set progress.changedelay really high This avoids subtopics from showing up, which were introduced by my recent change that added progress bars to hardlink clones in some cases.

test-clone: fix test expectations on systems without hardlinks

dirstate: use parsers.make_file_foldmap when available This is a significant performance win on large repositories. perffilefoldmap: On Linux/gcc, on a test repo with over 500,000 files: before: wall 0.605021 comb 0.600000 user 0.560000 sys 0.040000 (best of 17) after: wall 0.280530 comb 0.280000 user 0.250000 sys 0.030000 (best of 35) On Mac OS X/clang, on a real-world repo with over 200,000 files: before: wall 0.281103 comb 0.280000 user 0.260000 sys 0.020000 (best of 34) after: wall 0.133622 comb 0.140000 user 0.120000 sys 0.020000 (best of 65) This visibly impacts status times on case-insensitive file systems. On the Mac OS X repo, status goes from 3.64 seconds to 3.50. With the third-party hgwatchman extension [1], 'hg status' on the same repo goes from 0.80 seconds to 0.65. [1] https://bitbucket.org/facebook/hgwatchman