comparison mercurial/cext/parsers.c @ 38012:0304f22497fa

revlog: use node tree (native code) for shortest() calculation

I want to rewrite revlog.shortest() to disambiguate only among hex
nodeids and then disambiguate the result with revnums at a higher
level (in scmutil). However, that would slow down `hg log -T
'{shortest(node,1)}\n'` from 5.0s to 6.8s, which I wasn't sure would
be acceptable. So this patch makes revlog.shortest() use the node tree
for finding the length of the shortest prefix that's unambiguous among
nodeids. Once that has been found, it makes it longer until it is also
not ambiguous with a revnum.

This speeds up `hg log -T '{shortest(node,1)}\n'` from 5.0s to 4.0s.

Differential Revision: https://phab.mercurial-scm.org/D3499

38011:7932be8b0559

void dirs_module_init(PyObject *mod);
void manifest_module_init(PyObject *mod);
void revlog_module_init(PyObject *mod);

static const int version = 4;

static void module_init(PyObject *mod)
{
	PyModule_AddIntConstant(mod, "version", version);

38012:0304f22497fa

void dirs_module_init(PyObject *mod);
void manifest_module_init(PyObject *mod);
void revlog_module_init(PyObject *mod);

static const int version = 5;

static void module_init(PyObject *mod)
{
	PyModule_AddIntConstant(mod, "version", version);