upstream/mercurial-mirror Files · mercurial/cext/util.h

util: use ~ as a suffix for a temp file in the same directory as a source file...

util: use ~ as a suffix for a temp file in the same directory as a source file Tools like Buck have patterns to ignore the creation of files (in the working copy) that match certain patterns: https://github.com/facebook/buck/blob/39278a4f0701c5239eae148968dc1ed4cc8661f7/src/com/facebook/buck/cli/Main.java#L259-L299 When Buck sees a new source file (as reported by Watchman), it has to invalidate a number of caches associated with the directory that contains the file. Using a standard suffix, such as `~`, would make it easier for Buck and others to filter out these types of file creation events. The other uses of `tempfile.mkstemp()` in Hg do not appear to be problematic because they (generally speaking) do not specify the `dir` parameter, so the new file is created in the system-appropriate temp directory, which is outside the working copy. Test Plan: `make tests` Differential Revision: https://phab.mercurial-scm.org/D468

Yuya Nishihara - - Load All Authors

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      /*

       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

      typedef struct {

      	PyObject_HEAD

      	char state;

      	int mode;

      	int size;

      	int mtime;

      } dirstateTupleObject;

      extern PyTypeObject dirstateTupleType;

      #define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateTupleType)

      #define MIN(a, b) (((a)<(b))?(a):(b))

      /* 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);

      }

      #endif /* _HG_UTIL_H_ */

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				/*
				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

				typedef struct {
				PyObject_HEAD
				char state;
				int mode;
				int size;
				int mtime;
				} dirstateTupleObject;

				extern PyTypeObject dirstateTupleType;
				#define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateTupleType)

				#define MIN(a, b) (((a)<(b))?(a):(b))
				/* 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);
				}

				#endif /* _HG_UTIL_H_ */