comparison mercurial/revlog.py @ 20217:33394f2e331e

revlog: move file writing to a separate function

Moves the code that actually writes to a file to a separate function in
revlog.py. This allows extensions to intercept and use the data being written to
disk. For example, an extension might want to replicate these writes elsewhere.

When cloning the Mercurial repo on /dev/shm with --pull, I see about a 0.3% perf change.
It goes from 28.2 to 28.3 seconds.

20216:01bdccfeb9d9

             base, link, p1r, p2r, node)
        self.index.insert(-1, e)
        self.nodemap[node] = curr

        entry = self._io.packentry(e, self.node, self.version, curr)
        if not self._inline:
            transaction.add(self.datafile, offset)
            transaction.add(self.indexfile, curr * len(entry))
            if data[0]:
                dfh.write(data[0])

            transaction.add(self.indexfile, offset, curr)
            ifh.write(entry)
            ifh.write(data[0])
            ifh.write(data[1])
            self.checkinlinesize(transaction, ifh)

        if type(text) == str: # only accept immutable objects
            self._cache = (node, curr, text)
        self._basecache = (curr, chainbase)
        return node

    def addgroup(self, bundle, linkmapper, transaction):
        """
        add a delta group

20217:33394f2e331e

             base, link, p1r, p2r, node)
        self.index.insert(-1, e)
        self.nodemap[node] = curr

        entry = self._io.packentry(e, self.node, self.version, curr)
        self._writeentry(transaction, ifh, dfh, entry, data, link, offset)

        if type(text) == str: # only accept immutable objects
            self._cache = (node, curr, text)
        self._basecache = (curr, chainbase)
        return node

    def _writeentry(self, transaction, ifh, dfh, entry, data, link, offset):
        curr = len(self) - 1
        if not self._inline:
            transaction.add(self.datafile, offset)
            transaction.add(self.indexfile, curr * len(entry))
            if data[0]:
                dfh.write(data[0])

            transaction.add(self.indexfile, offset, curr)
            ifh.write(entry)
            ifh.write(data[0])
            ifh.write(data[1])
            self.checkinlinesize(transaction, ifh)

    def addgroup(self, bundle, linkmapper, transaction):
        """
        add a delta group