dirstate-v2: Separate HAS_FILE_MTIME and HAS_DIRECTORY_MTIME flags
Previously the same flag was used, with its meaning based on whether the node
otherwise identifies a file tracked anywhere.
In addition to being more explicit, this enables storing a directory mtime
if a given path used to be tracked in a parent commit (so the dirstate still
has data about it) but became a directory in the working copy.
(However this is not done yet as it would require a larger change,
replacing the `dirstate_map::NodeData` enum with struct fields.)
Differential Revision: https://phab.mercurial-scm.org/D11662
/*
util.h - utility functions for interfacing with the various python APIs.
This software may be used and distributed according to the terms of
the GNU General Public License, incorporated herein by reference.
*/
#ifndef _HG_UTIL_H_
#define _HG_UTIL_H_
#include "compat.h"
#if PY_MAJOR_VERSION >= 3
#define IS_PY3K
#endif
/* helper to switch things like string literal depending on Python version */
#ifdef IS_PY3K
#define PY23(py2, py3) py3
#else
#define PY23(py2, py3) py2
#endif
/* clang-format off */
typedef struct {
PyObject_HEAD
unsigned char flags;
int mode;
int size;
int mtime;
} dirstateItemObject;
/* clang-format on */
static const unsigned char dirstate_flag_wc_tracked = 1;
static const unsigned char dirstate_flag_p1_tracked = 1 << 1;
static const unsigned char dirstate_flag_p2_info = 1 << 2;
static const unsigned char dirstate_flag_has_meaningful_data = 1 << 3;
static const unsigned char dirstate_flag_has_file_mtime = 1 << 4;
static const unsigned char dirstate_flag_has_directory_mtime = 1 << 5;
static const unsigned char dirstate_flag_mode_exec_perm = 1 << 6;
static const unsigned char dirstate_flag_mode_is_symlink = 1 << 7;
extern PyTypeObject dirstateItemType;
#define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateItemType)
#ifndef MIN
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif
/* VC9 doesn't include bool and lacks stdbool.h based on my searching */
#if defined(_MSC_VER) || __STDC_VERSION__ < 199901L
#define true 1
#define false 0
typedef unsigned char bool;
#else
#include <stdbool.h>
#endif
static inline PyObject *_dict_new_presized(Py_ssize_t expected_size)
{
/* _PyDict_NewPresized expects a minused parameter, but it actually
creates a dictionary that's the nearest power of two bigger than the
parameter. For example, with the initial minused = 1000, the
dictionary created has size 1024. Of course in a lot of cases that
can be greater than the maximum load factor Python's dict object
expects (= 2/3), so as soon as we cross the threshold we'll resize
anyway. So create a dictionary that's at least 3/2 the size. */
return _PyDict_NewPresized(((1 + expected_size) / 2) * 3);
}
/* Convert a PyInt or PyLong to a long. Returns false if there is an
error, in which case an exception will already have been set. */
static inline bool pylong_to_long(PyObject *pylong, long *out)
{
*out = PyLong_AsLong(pylong);
/* Fast path to avoid hitting PyErr_Occurred if the value was obviously
* not an error. */
if (*out != -1) {
return true;
}
return PyErr_Occurred() == NULL;
}
#endif /* _HG_UTIL_H_ */