mercurial/branchmap.py

28557:4b83507bfc91

        if self._rbcrevslen == 0:
            self._names = []
        self._rbcnamescount = len(self._names) # number of good names on disk
        self._namesreverse = dict((b, r) for r, b in enumerate(self._names))

    def branchinfo(self, rev):
        """Return branch name and close flag for rev, using and updating
        persistent cache."""
        changelog = self._repo.changelog
        rbcrevidx = rev * _rbcrecsize

        if close:
            branchidx &= _rbcbranchidxmask
        if cachenode == '\0\0\0\0':
            pass
        elif cachenode == reponode:
            return self._names[branchidx], close
        else:
            # rev/node map has changed, invalidate the cache from here up
            truncate = rbcrevidx + _rbcrecsize
            del self._rbcrevs[truncate:]
            self._rbcrevslen = min(self._rbcrevslen, truncate)

28558:bcd106d456c4

        if self._rbcrevslen == 0:
            self._names = []
        self._rbcnamescount = len(self._names) # number of good names on disk
        self._namesreverse = dict((b, r) for r, b in enumerate(self._names))

    def _clear(self):
        self._rbcsnameslen = 0
        del self._names[:]
        self._rbcnamescount = 0
        self._namesreverse.clear()
        self._rbcrevslen = len(self._repo.changelog)
        self._rbcrevs = array('c')
        self._rbcrevs.fromstring('\0' * (self._rbcrevslen * _rbcrecsize))

    def branchinfo(self, rev):
        """Return branch name and close flag for rev, using and updating
        persistent cache."""
        changelog = self._repo.changelog
        rbcrevidx = rev * _rbcrecsize

        if close:
            branchidx &= _rbcbranchidxmask
        if cachenode == '\0\0\0\0':
            pass
        elif cachenode == reponode:
            if branchidx < self._rbcnamescount:
                return self._names[branchidx], close
            # referenced branch doesn't exist - rebuild is expensive but needed
            self._repo.ui.debug("rebuilding corrupted revision branch cache\n")
            self._clear()
        else:
            # rev/node map has changed, invalidate the cache from here up
            truncate = rbcrevidx + _rbcrecsize
            del self._rbcrevs[truncate:]
            self._rbcrevslen = min(self._rbcrevslen, truncate)