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/*
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parsers.c - efficient content parsing
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Copyright 2008 Matt Mackall <mpm@selenic.com> and others
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This software may be used and distributed according to the terms of
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the GNU General Public License, incorporated herein by reference.
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*/
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#include <Python.h>
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#include <ctype.h>
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#include <stddef.h>
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#include <string.h>
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#include "util.h"
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#include "bitmanipulation.h"
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#ifdef IS_PY3K
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/* The mapping of Python types is meant to be temporary to get Python
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* 3 to compile. We should remove this once Python 3 support is fully
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* supported and proper types are used in the extensions themselves. */
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#define PyInt_Check PyLong_Check
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#define PyInt_FromLong PyLong_FromLong
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#define PyInt_FromSsize_t PyLong_FromSsize_t
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#define PyInt_AS_LONG PyLong_AS_LONG
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#define PyInt_AsLong PyLong_AsLong
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#endif
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/*
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* A base-16 trie for fast node->rev mapping.
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*
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* Positive value is index of the next node in the trie
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* Negative value is a leaf: -(rev + 1)
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* Zero is empty
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*/
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typedef struct {
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int children[16];
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} nodetree;
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/*
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* This class has two behaviors.
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*
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* When used in a list-like way (with integer keys), we decode an
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* entry in a RevlogNG index file on demand. Our last entry is a
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* sentinel, always a nullid. We have limited support for
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* integer-keyed insert and delete, only at elements right before the
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* sentinel.
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*
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* With string keys, we lazily perform a reverse mapping from node to
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* rev, using a base-16 trie.
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*/
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typedef struct {
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PyObject_HEAD
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/* Type-specific fields go here. */
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PyObject *data; /* raw bytes of index */
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Py_buffer buf; /* buffer of data */
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PyObject **cache; /* cached tuples */
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const char **offsets; /* populated on demand */
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Py_ssize_t raw_length; /* original number of elements */
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Py_ssize_t length; /* current number of elements */
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PyObject *added; /* populated on demand */
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PyObject *headrevs; /* cache, invalidated on changes */
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PyObject *filteredrevs;/* filtered revs set */
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nodetree *nt; /* base-16 trie */
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unsigned ntlength; /* # nodes in use */
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unsigned ntcapacity; /* # nodes allocated */
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int ntdepth; /* maximum depth of tree */
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int ntsplits; /* # splits performed */
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int ntrev; /* last rev scanned */
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int ntlookups; /* # lookups */
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int ntmisses; /* # lookups that miss the cache */
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int inlined;
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} indexObject;
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static Py_ssize_t index_length(const indexObject *self)
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{
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if (self->added == NULL)
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return self->length;
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return self->length + PyList_GET_SIZE(self->added);
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}
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static PyObject *nullentry;
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static const char nullid[20];
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static Py_ssize_t inline_scan(indexObject *self, const char **offsets);
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#if LONG_MAX == 0x7fffffffL
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static char *tuple_format = "Kiiiiiis#";
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#else
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static char *tuple_format = "kiiiiiis#";
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#endif
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/* A RevlogNG v1 index entry is 64 bytes long. */
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static const long v1_hdrsize = 64;
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/*
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* Return a pointer to the beginning of a RevlogNG record.
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*/
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static const char *index_deref(indexObject *self, Py_ssize_t pos)
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{
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if (self->inlined && pos > 0) {
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if (self->offsets == NULL) {
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self->offsets = PyMem_Malloc(self->raw_length *
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sizeof(*self->offsets));
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if (self->offsets == NULL)
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return (const char *)PyErr_NoMemory();
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inline_scan(self, self->offsets);
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}
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return self->offsets[pos];
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}
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return (const char *)(self->buf.buf) + pos * v1_hdrsize;
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}
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static inline int index_get_parents(indexObject *self, Py_ssize_t rev,
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int *ps, int maxrev)
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{
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if (rev >= self->length - 1) {
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PyObject *tuple = PyList_GET_ITEM(self->added,
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rev - self->length + 1);
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ps[0] = (int)PyInt_AS_LONG(PyTuple_GET_ITEM(tuple, 5));
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ps[1] = (int)PyInt_AS_LONG(PyTuple_GET_ITEM(tuple, 6));
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} else {
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const char *data = index_deref(self, rev);
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ps[0] = getbe32(data + 24);
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ps[1] = getbe32(data + 28);
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}
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/* If index file is corrupted, ps[] may point to invalid revisions. So
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* there is a risk of buffer overflow to trust them unconditionally. */
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if (ps[0] > maxrev || ps[1] > maxrev) {
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PyErr_SetString(PyExc_ValueError, "parent out of range");
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return -1;
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}
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return 0;
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}
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/*
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* RevlogNG format (all in big endian, data may be inlined):
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* 6 bytes: offset
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* 2 bytes: flags
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* 4 bytes: compressed length
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* 4 bytes: uncompressed length
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* 4 bytes: base revision
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* 4 bytes: link revision
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* 4 bytes: parent 1 revision
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* 4 bytes: parent 2 revision
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* 32 bytes: nodeid (only 20 bytes used)
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*/
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static PyObject *index_get(indexObject *self, Py_ssize_t pos)
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{
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uint64_t offset_flags;
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int comp_len, uncomp_len, base_rev, link_rev, parent_1, parent_2;
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const char *c_node_id;
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const char *data;
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Py_ssize_t length = index_length(self);
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PyObject *entry;
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if (pos < 0)
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pos += length;
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if (pos < 0 || pos >= length) {
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PyErr_SetString(PyExc_IndexError, "revlog index out of range");
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return NULL;
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}
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if (pos == length - 1) {
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Py_INCREF(nullentry);
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return nullentry;
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}
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if (pos >= self->length - 1) {
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PyObject *obj;
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obj = PyList_GET_ITEM(self->added, pos - self->length + 1);
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Py_INCREF(obj);
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return obj;
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}
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if (self->cache) {
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if (self->cache[pos]) {
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Py_INCREF(self->cache[pos]);
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return self->cache[pos];
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}
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} else {
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self->cache = calloc(self->raw_length, sizeof(PyObject *));
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if (self->cache == NULL)
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return PyErr_NoMemory();
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}
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data = index_deref(self, pos);
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if (data == NULL)
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return NULL;
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offset_flags = getbe32(data + 4);
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if (pos == 0) /* mask out version number for the first entry */
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offset_flags &= 0xFFFF;
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else {
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uint32_t offset_high = getbe32(data);
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offset_flags |= ((uint64_t)offset_high) << 32;
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}
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comp_len = getbe32(data + 8);
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uncomp_len = getbe32(data + 12);
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base_rev = getbe32(data + 16);
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link_rev = getbe32(data + 20);
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parent_1 = getbe32(data + 24);
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parent_2 = getbe32(data + 28);
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c_node_id = data + 32;
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entry = Py_BuildValue(tuple_format, offset_flags, comp_len,
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uncomp_len, base_rev, link_rev,
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parent_1, parent_2, c_node_id, 20);
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if (entry) {
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PyObject_GC_UnTrack(entry);
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Py_INCREF(entry);
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}
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self->cache[pos] = entry;
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return entry;
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}
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/*
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* Return the 20-byte SHA of the node corresponding to the given rev.
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*/
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static const char *index_node(indexObject *self, Py_ssize_t pos)
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{
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Py_ssize_t length = index_length(self);
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const char *data;
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if (pos == length - 1 || pos == INT_MAX)
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return nullid;
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if (pos >= length)
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return NULL;
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if (pos >= self->length - 1) {
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PyObject *tuple, *str;
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tuple = PyList_GET_ITEM(self->added, pos - self->length + 1);
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str = PyTuple_GetItem(tuple, 7);
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return str ? PyBytes_AS_STRING(str) : NULL;
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}
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data = index_deref(self, pos);
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return data ? data + 32 : NULL;
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}
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static int nt_insert(indexObject *self, const char *node, int rev);
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static int node_check(PyObject *obj, char **node, Py_ssize_t *nodelen)
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{
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if (PyBytes_AsStringAndSize(obj, node, nodelen) == -1)
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return -1;
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if (*nodelen == 20)
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return 0;
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PyErr_SetString(PyExc_ValueError, "20-byte hash required");
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return -1;
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}
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static PyObject *index_insert(indexObject *self, PyObject *args)
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{
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PyObject *obj;
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char *node;
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int index;
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Py_ssize_t len, nodelen;
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if (!PyArg_ParseTuple(args, "iO", &index, &obj))
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return NULL;
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if (!PyTuple_Check(obj) || PyTuple_GET_SIZE(obj) != 8) {
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PyErr_SetString(PyExc_TypeError, "8-tuple required");
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return NULL;
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}
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if (node_check(PyTuple_GET_ITEM(obj, 7), &node, &nodelen) == -1)
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return NULL;
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len = index_length(self);
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if (index < 0)
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index += len;
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if (index != len - 1) {
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PyErr_SetString(PyExc_IndexError,
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"insert only supported at index -1");
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return NULL;
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}
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if (self->added == NULL) {
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self->added = PyList_New(0);
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if (self->added == NULL)
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return NULL;
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}
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if (PyList_Append(self->added, obj) == -1)
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return NULL;
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if (self->nt)
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nt_insert(self, node, index);
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Py_CLEAR(self->headrevs);
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Py_RETURN_NONE;
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}
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static void _index_clearcaches(indexObject *self)
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{
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if (self->cache) {
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Py_ssize_t i;
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for (i = 0; i < self->raw_length; i++)
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Py_CLEAR(self->cache[i]);
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free(self->cache);
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self->cache = NULL;
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}
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if (self->offsets) {
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PyMem_Free(self->offsets);
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self->offsets = NULL;
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}
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if (self->nt) {
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free(self->nt);
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self->nt = NULL;
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}
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Py_CLEAR(self->headrevs);
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}
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static PyObject *index_clearcaches(indexObject *self)
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{
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_index_clearcaches(self);
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self->ntlength = self->ntcapacity = 0;
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self->ntdepth = self->ntsplits = 0;
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self->ntrev = -1;
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self->ntlookups = self->ntmisses = 0;
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Py_RETURN_NONE;
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}
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static PyObject *index_stats(indexObject *self)
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{
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PyObject *obj = PyDict_New();
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PyObject *t = NULL;
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if (obj == NULL)
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return NULL;
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#define istat(__n, __d) \
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do { \
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t = PyInt_FromSsize_t(self->__n); \
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if (!t) \
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goto bail; \
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if (PyDict_SetItemString(obj, __d, t) == -1) \
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goto bail; \
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Py_DECREF(t); \
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} while (0)
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if (self->added) {
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Py_ssize_t len = PyList_GET_SIZE(self->added);
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t = PyInt_FromSsize_t(len);
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if (!t)
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goto bail;
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if (PyDict_SetItemString(obj, "index entries added", t) == -1)
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goto bail;
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Py_DECREF(t);
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}
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if (self->raw_length != self->length - 1)
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istat(raw_length, "revs on disk");
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istat(length, "revs in memory");
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istat(ntcapacity, "node trie capacity");
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istat(ntdepth, "node trie depth");
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istat(ntlength, "node trie count");
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istat(ntlookups, "node trie lookups");
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istat(ntmisses, "node trie misses");
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istat(ntrev, "node trie last rev scanned");
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istat(ntsplits, "node trie splits");
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#undef istat
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return obj;
|
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|
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|
bail:
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Py_XDECREF(obj);
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Py_XDECREF(t);
|
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|
return NULL;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* When we cache a list, we want to be sure the caller can't mutate
|
|
|
* the cached copy.
|
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|
*/
|
|
|
static PyObject *list_copy(PyObject *list)
|
|
|
{
|
|
|
Py_ssize_t len = PyList_GET_SIZE(list);
|
|
|
PyObject *newlist = PyList_New(len);
|
|
|
Py_ssize_t i;
|
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|
|
|
|
if (newlist == NULL)
|
|
|
return NULL;
|
|
|
|
|
|
for (i = 0; i < len; i++) {
|
|
|
PyObject *obj = PyList_GET_ITEM(list, i);
|
|
|
Py_INCREF(obj);
|
|
|
PyList_SET_ITEM(newlist, i, obj);
|
|
|
}
|
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|
|
|
|
return newlist;
|
|
|
}
|
|
|
|
|
|
static int check_filter(PyObject *filter, Py_ssize_t arg) {
|
|
|
if (filter) {
|
|
|
PyObject *arglist, *result;
|
|
|
int isfiltered;
|
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|
|
|
|
arglist = Py_BuildValue("(n)", arg);
|
|
|
if (!arglist) {
|
|
|
return -1;
|
|
|
}
|
|
|
|
|
|
result = PyEval_CallObject(filter, arglist);
|
|
|
Py_DECREF(arglist);
|
|
|
if (!result) {
|
|
|
return -1;
|
|
|
}
|
|
|
|
|
|
/* PyObject_IsTrue returns 1 if true, 0 if false, -1 if error,
|
|
|
* same as this function, so we can just return it directly.*/
|
|
|
isfiltered = PyObject_IsTrue(result);
|
|
|
Py_DECREF(result);
|
|
|
return isfiltered;
|
|
|
} else {
|
|
|
return 0;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
static Py_ssize_t add_roots_get_min(indexObject *self, PyObject *list,
|
|
|
Py_ssize_t marker, char *phases)
|
|
|
{
|
|
|
PyObject *iter = NULL;
|
|
|
PyObject *iter_item = NULL;
|
|
|
Py_ssize_t min_idx = index_length(self) + 1;
|
|
|
long iter_item_long;
|
|
|
|
|
|
if (PyList_GET_SIZE(list) != 0) {
|
|
|
iter = PyObject_GetIter(list);
|
|
|
if (iter == NULL)
|
|
|
return -2;
|
|
|
while ((iter_item = PyIter_Next(iter)))
|
|
|
{
|
|
|
iter_item_long = PyInt_AS_LONG(iter_item);
|
|
|
Py_DECREF(iter_item);
|
|
|
if (iter_item_long < min_idx)
|
|
|
min_idx = iter_item_long;
|
|
|
phases[iter_item_long] = marker;
|
|
|
}
|
|
|
Py_DECREF(iter);
|
|
|
}
|
|
|
|
|
|
return min_idx;
|
|
|
}
|
|
|
|
|
|
static inline void set_phase_from_parents(char *phases, int parent_1,
|
|
|
int parent_2, Py_ssize_t i)
|
|
|
{
|
|
|
if (parent_1 >= 0 && phases[parent_1] > phases[i])
|
|
|
phases[i] = phases[parent_1];
|
|
|
if (parent_2 >= 0 && phases[parent_2] > phases[i])
|
|
|
phases[i] = phases[parent_2];
|
|
|
}
|
|
|
|
|
|
static PyObject *reachableroots2(indexObject *self, PyObject *args)
|
|
|
{
|
|
|
|
|
|
/* Input */
|
|
|
long minroot;
|
|
|
PyObject *includepatharg = NULL;
|
|
|
int includepath = 0;
|
|
|
/* heads and roots are lists */
|
|
|
PyObject *heads = NULL;
|
|
|
PyObject *roots = NULL;
|
|
|
PyObject *reachable = NULL;
|
|
|
|
|
|
PyObject *val;
|
|
|
Py_ssize_t len = index_length(self) - 1;
|
|
|
long revnum;
|
|
|
Py_ssize_t k;
|
|
|
Py_ssize_t i;
|
|
|
Py_ssize_t l;
|
|
|
int r;
|
|
|
int parents[2];
|
|
|
|
|
|
/* Internal data structure:
|
|
|
* tovisit: array of length len+1 (all revs + nullrev), filled upto lentovisit
|
|
|
* revstates: array of length len+1 (all revs + nullrev) */
|
|
|
int *tovisit = NULL;
|
|
|
long lentovisit = 0;
|
|
|
enum { RS_SEEN = 1, RS_ROOT = 2, RS_REACHABLE = 4 };
|
|
|
char *revstates = NULL;
|
|
|
|
|
|
/* Get arguments */
|
|
|
if (!PyArg_ParseTuple(args, "lO!O!O!", &minroot, &PyList_Type, &heads,
|
|
|
&PyList_Type, &roots,
|
|
|
&PyBool_Type, &includepatharg))
|
|
|
goto bail;
|
|
|
|
|
|
if (includepatharg == Py_True)
|
|
|
includepath = 1;
|
|
|
|
|
|
/* Initialize return set */
|
|
|
reachable = PyList_New(0);
|
|
|
if (reachable == NULL)
|
|
|
goto bail;
|
|
|
|
|
|
/* Initialize internal datastructures */
|
|
|
tovisit = (int *)malloc((len + 1) * sizeof(int));
|
|
|
if (tovisit == NULL) {
|
|
|
PyErr_NoMemory();
|
|
|
goto bail;
|
|
|
}
|
|
|
|
|
|
revstates = (char *)calloc(len + 1, 1);
|
|
|
if (revstates == NULL) {
|
|
|
PyErr_NoMemory();
|
|
|
goto bail;
|
|
|
}
|
|
|
|
|
|
l = PyList_GET_SIZE(roots);
|
|
|
for (i = 0; i < l; i++) {
|
|
|
revnum = PyInt_AsLong(PyList_GET_ITEM(roots, i));
|
|
|
if (revnum == -1 && PyErr_Occurred())
|
|
|
goto bail;
|
|
|
/* If root is out of range, e.g. wdir(), it must be unreachable
|
|
|
* from heads. So we can just ignore it. */
|
|
|
if (revnum + 1 < 0 || revnum + 1 >= len + 1)
|
|
|
continue;
|
|
|
revstates[revnum + 1] |= RS_ROOT;
|
|
|
}
|
|
|
|
|
|
/* Populate tovisit with all the heads */
|
|
|
l = PyList_GET_SIZE(heads);
|
|
|
for (i = 0; i < l; i++) {
|
|
|
revnum = PyInt_AsLong(PyList_GET_ITEM(heads, i));
|
|
|
if (revnum == -1 && PyErr_Occurred())
|
|
|
goto bail;
|
|
|
if (revnum + 1 < 0 || revnum + 1 >= len + 1) {
|
|
|
PyErr_SetString(PyExc_IndexError, "head out of range");
|
|
|
goto bail;
|
|
|
}
|
|
|
if (!(revstates[revnum + 1] & RS_SEEN)) {
|
|
|
tovisit[lentovisit++] = (int)revnum;
|
|
|
revstates[revnum + 1] |= RS_SEEN;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/* Visit the tovisit list and find the reachable roots */
|
|
|
k = 0;
|
|
|
while (k < lentovisit) {
|
|
|
/* Add the node to reachable if it is a root*/
|
|
|
revnum = tovisit[k++];
|
|
|
if (revstates[revnum + 1] & RS_ROOT) {
|
|
|
revstates[revnum + 1] |= RS_REACHABLE;
|
|
|
val = PyInt_FromLong(revnum);
|
|
|
if (val == NULL)
|
|
|
goto bail;
|
|
|
r = PyList_Append(reachable, val);
|
|
|
Py_DECREF(val);
|
|
|
if (r < 0)
|
|
|
goto bail;
|
|
|
if (includepath == 0)
|
|
|
continue;
|
|
|
}
|
|
|
|
|
|
/* Add its parents to the list of nodes to visit */
|
|
|
if (revnum == -1)
|
|
|
continue;
|
|
|
r = index_get_parents(self, revnum, parents, (int)len - 1);
|
|
|
if (r < 0)
|
|
|
goto bail;
|
|
|
for (i = 0; i < 2; i++) {
|
|
|
if (!(revstates[parents[i] + 1] & RS_SEEN)
|
|
|
&& parents[i] >= minroot) {
|
|
|
tovisit[lentovisit++] = parents[i];
|
|
|
revstates[parents[i] + 1] |= RS_SEEN;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/* Find all the nodes in between the roots we found and the heads
|
|
|
* and add them to the reachable set */
|
|
|
if (includepath == 1) {
|
|
|
long minidx = minroot;
|
|
|
if (minidx < 0)
|
|
|
minidx = 0;
|
|
|
for (i = minidx; i < len; i++) {
|
|
|
if (!(revstates[i + 1] & RS_SEEN))
|
|
|
continue;
|
|
|
r = index_get_parents(self, i, parents, (int)len - 1);
|
|
|
/* Corrupted index file, error is set from
|
|
|
* index_get_parents */
|
|
|
if (r < 0)
|
|
|
goto bail;
|
|
|
if (((revstates[parents[0] + 1] |
|
|
|
revstates[parents[1] + 1]) & RS_REACHABLE)
|
|
|
&& !(revstates[i + 1] & RS_REACHABLE)) {
|
|
|
revstates[i + 1] |= RS_REACHABLE;
|
|
|
val = PyInt_FromLong(i);
|
|
|
if (val == NULL)
|
|
|
goto bail;
|
|
|
r = PyList_Append(reachable, val);
|
|
|
Py_DECREF(val);
|
|
|
if (r < 0)
|
|
|
goto bail;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
free(revstates);
|
|
|
free(tovisit);
|
|
|
return reachable;
|
|
|
bail:
|
|
|
Py_XDECREF(reachable);
|
|
|
free(revstates);
|
|
|
free(tovisit);
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
static PyObject *compute_phases_map_sets(indexObject *self, PyObject *args)
|
|
|
{
|
|
|
PyObject *roots = Py_None;
|
|
|
PyObject *ret = NULL;
|
|
|
PyObject *phaseslist = NULL;
|
|
|
PyObject *phaseroots = NULL;
|
|
|
PyObject *phaseset = NULL;
|
|
|
PyObject *phasessetlist = NULL;
|
|
|
PyObject *rev = NULL;
|
|
|
Py_ssize_t len = index_length(self) - 1;
|
|
|
Py_ssize_t numphase = 0;
|
|
|
Py_ssize_t minrevallphases = 0;
|
|
|
Py_ssize_t minrevphase = 0;
|
|
|
Py_ssize_t i = 0;
|
|
|
char *phases = NULL;
|
|
|
long phase;
|
|
|
|
|
|
if (!PyArg_ParseTuple(args, "O", &roots))
|
|
|
goto done;
|
|
|
if (roots == NULL || !PyList_Check(roots))
|
|
|
goto done;
|
|
|
|
|
|
phases = calloc(len, 1); /* phase per rev: {0: public, 1: draft, 2: secret} */
|
|
|
if (phases == NULL) {
|
|
|
PyErr_NoMemory();
|
|
|
goto done;
|
|
|
}
|
|
|
/* Put the phase information of all the roots in phases */
|
|
|
numphase = PyList_GET_SIZE(roots)+1;
|
|
|
minrevallphases = len + 1;
|
|
|
phasessetlist = PyList_New(numphase);
|
|
|
if (phasessetlist == NULL)
|
|
|
goto done;
|
|
|
|
|
|
PyList_SET_ITEM(phasessetlist, 0, Py_None);
|
|
|
Py_INCREF(Py_None);
|
|
|
|
|
|
for (i = 0; i < numphase-1; i++) {
|
|
|
phaseroots = PyList_GET_ITEM(roots, i);
|
|
|
phaseset = PySet_New(NULL);
|
|
|
if (phaseset == NULL)
|
|
|
goto release;
|
|
|
PyList_SET_ITEM(phasessetlist, i+1, phaseset);
|
|
|
if (!PyList_Check(phaseroots))
|
|
|
goto release;
|
|
|
minrevphase = add_roots_get_min(self, phaseroots, i+1, phases);
|
|
|
if (minrevphase == -2) /* Error from add_roots_get_min */
|
|
|
goto release;
|
|
|
minrevallphases = MIN(minrevallphases, minrevphase);
|
|
|
}
|
|
|
/* Propagate the phase information from the roots to the revs */
|
|
|
if (minrevallphases != -1) {
|
|
|
int parents[2];
|
|
|
for (i = minrevallphases; i < len; i++) {
|
|
|
if (index_get_parents(self, i, parents,
|
|
|
(int)len - 1) < 0)
|
|
|
goto release;
|
|
|
set_phase_from_parents(phases, parents[0], parents[1], i);
|
|
|
}
|
|
|
}
|
|
|
/* Transform phase list to a python list */
|
|
|
phaseslist = PyList_New(len);
|
|
|
if (phaseslist == NULL)
|
|
|
goto release;
|
|
|
for (i = 0; i < len; i++) {
|
|
|
PyObject *phaseval;
|
|
|
|
|
|
phase = phases[i];
|
|
|
/* We only store the sets of phase for non public phase, the public phase
|
|
|
* is computed as a difference */
|
|
|
if (phase != 0) {
|
|
|
phaseset = PyList_GET_ITEM(phasessetlist, phase);
|
|
|
rev = PyInt_FromLong(i);
|
|
|
if (rev == NULL)
|
|
|
goto release;
|
|
|
PySet_Add(phaseset, rev);
|
|
|
Py_XDECREF(rev);
|
|
|
}
|
|
|
phaseval = PyInt_FromLong(phase);
|
|
|
if (phaseval == NULL)
|
|
|
goto release;
|
|
|
PyList_SET_ITEM(phaseslist, i, phaseval);
|
|
|
}
|
|
|
ret = PyTuple_Pack(2, phaseslist, phasessetlist);
|
|
|
|
|
|
release:
|
|
|
Py_XDECREF(phaseslist);
|
|
|
Py_XDECREF(phasessetlist);
|
|
|
done:
|
|
|
free(phases);
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
static PyObject *index_headrevs(indexObject *self, PyObject *args)
|
|
|
{
|
|
|
Py_ssize_t i, j, len;
|
|
|
char *nothead = NULL;
|
|
|
PyObject *heads = NULL;
|
|
|
PyObject *filter = NULL;
|
|
|
PyObject *filteredrevs = Py_None;
|
|
|
|
|
|
if (!PyArg_ParseTuple(args, "|O", &filteredrevs)) {
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
if (self->headrevs && filteredrevs == self->filteredrevs)
|
|
|
return list_copy(self->headrevs);
|
|
|
|
|
|
Py_DECREF(self->filteredrevs);
|
|
|
self->filteredrevs = filteredrevs;
|
|
|
Py_INCREF(filteredrevs);
|
|
|
|
|
|
if (filteredrevs != Py_None) {
|
|
|
filter = PyObject_GetAttrString(filteredrevs, "__contains__");
|
|
|
if (!filter) {
|
|
|
PyErr_SetString(PyExc_TypeError,
|
|
|
"filteredrevs has no attribute __contains__");
|
|
|
goto bail;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
len = index_length(self) - 1;
|
|
|
heads = PyList_New(0);
|
|
|
if (heads == NULL)
|
|
|
goto bail;
|
|
|
if (len == 0) {
|
|
|
PyObject *nullid = PyInt_FromLong(-1);
|
|
|
if (nullid == NULL || PyList_Append(heads, nullid) == -1) {
|
|
|
Py_XDECREF(nullid);
|
|
|
goto bail;
|
|
|
}
|
|
|
goto done;
|
|
|
}
|
|
|
|
|
|
nothead = calloc(len, 1);
|
|
|
if (nothead == NULL) {
|
|
|
PyErr_NoMemory();
|
|
|
goto bail;
|
|
|
}
|
|
|
|
|
|
for (i = len - 1; i >= 0; i--) {
|
|
|
int isfiltered;
|
|
|
int parents[2];
|
|
|
|
|
|
/* If nothead[i] == 1, it means we've seen an unfiltered child of this
|
|
|
* node already, and therefore this node is not filtered. So we can skip
|
|
|
* the expensive check_filter step.
|
|
|
*/
|
|
|
if (nothead[i] != 1) {
|
|
|
isfiltered = check_filter(filter, i);
|
|
|
if (isfiltered == -1) {
|
|
|
PyErr_SetString(PyExc_TypeError,
|
|
|
"unable to check filter");
|
|
|
goto bail;
|
|
|
}
|
|
|
|
|
|
if (isfiltered) {
|
|
|
nothead[i] = 1;
|
|
|
continue;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (index_get_parents(self, i, parents, (int)len - 1) < 0)
|
|
|
goto bail;
|
|
|
for (j = 0; j < 2; j++) {
|
|
|
if (parents[j] >= 0)
|
|
|
nothead[parents[j]] = 1;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
for (i = 0; i < len; i++) {
|
|
|
PyObject *head;
|
|
|
|
|
|
if (nothead[i])
|
|
|
continue;
|
|
|
head = PyInt_FromSsize_t(i);
|
|
|
if (head == NULL || PyList_Append(heads, head) == -1) {
|
|
|
Py_XDECREF(head);
|
|
|
goto bail;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
done:
|
|
|
self->headrevs = heads;
|
|
|
Py_XDECREF(filter);
|
|
|
free(nothead);
|
|
|
return list_copy(self->headrevs);
|
|
|
bail:
|
|
|
Py_XDECREF(filter);
|
|
|
Py_XDECREF(heads);
|
|
|
free(nothead);
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
static inline int nt_level(const char *node, Py_ssize_t level)
|
|
|
{
|
|
|
int v = node[level>>1];
|
|
|
if (!(level & 1))
|
|
|
v >>= 4;
|
|
|
return v & 0xf;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Return values:
|
|
|
*
|
|
|
* -4: match is ambiguous (multiple candidates)
|
|
|
* -2: not found
|
|
|
* rest: valid rev
|
|
|
*/
|
|
|
static int nt_find(indexObject *self, const char *node, Py_ssize_t nodelen,
|
|
|
int hex)
|
|
|
{
|
|
|
int (*getnybble)(const char *, Py_ssize_t) = hex ? hexdigit : nt_level;
|
|
|
int level, maxlevel, off;
|
|
|
|
|
|
if (nodelen == 20 && node[0] == '\0' && memcmp(node, nullid, 20) == 0)
|
|
|
return -1;
|
|
|
|
|
|
if (self->nt == NULL)
|
|
|
return -2;
|
|
|
|
|
|
if (hex)
|
|
|
maxlevel = nodelen > 40 ? 40 : (int)nodelen;
|
|
|
else
|
|
|
maxlevel = nodelen > 20 ? 40 : ((int)nodelen * 2);
|
|
|
|
|
|
for (level = off = 0; level < maxlevel; level++) {
|
|
|
int k = getnybble(node, level);
|
|
|
nodetree *n = &self->nt[off];
|
|
|
int v = n->children[k];
|
|
|
|
|
|
if (v < 0) {
|
|
|
const char *n;
|
|
|
Py_ssize_t i;
|
|
|
|
|
|
v = -(v + 1);
|
|
|
n = index_node(self, v);
|
|
|
if (n == NULL)
|
|
|
return -2;
|
|
|
for (i = level; i < maxlevel; i++)
|
|
|
if (getnybble(node, i) != nt_level(n, i))
|
|
|
return -2;
|
|
|
return v;
|
|
|
}
|
|
|
if (v == 0)
|
|
|
return -2;
|
|
|
off = v;
|
|
|
}
|
|
|
/* multiple matches against an ambiguous prefix */
|
|
|
return -4;
|
|
|
}
|
|
|
|
|
|
static int nt_new(indexObject *self)
|
|
|
{
|
|
|
if (self->ntlength == self->ntcapacity) {
|
|
|
if (self->ntcapacity >= INT_MAX / (sizeof(nodetree) * 2)) {
|
|
|
PyErr_SetString(PyExc_MemoryError,
|
|
|
"overflow in nt_new");
|
|
|
return -1;
|
|
|
}
|
|
|
self->ntcapacity *= 2;
|
|
|
self->nt = realloc(self->nt,
|
|
|
self->ntcapacity * sizeof(nodetree));
|
|
|
if (self->nt == NULL) {
|
|
|
PyErr_SetString(PyExc_MemoryError, "out of memory");
|
|
|
return -1;
|
|
|
}
|
|
|
memset(&self->nt[self->ntlength], 0,
|
|
|
sizeof(nodetree) * (self->ntcapacity - self->ntlength));
|
|
|
}
|
|
|
return self->ntlength++;
|
|
|
}
|
|
|
|
|
|
static int nt_insert(indexObject *self, const char *node, int rev)
|
|
|
{
|
|
|
int level = 0;
|
|
|
int off = 0;
|
|
|
|
|
|
while (level < 40) {
|
|
|
int k = nt_level(node, level);
|
|
|
nodetree *n;
|
|
|
int v;
|
|
|
|
|
|
n = &self->nt[off];
|
|
|
v = n->children[k];
|
|
|
|
|
|
if (v == 0) {
|
|
|
n->children[k] = -rev - 1;
|
|
|
return 0;
|
|
|
}
|
|
|
if (v < 0) {
|
|
|
const char *oldnode = index_node(self, -(v + 1));
|
|
|
int noff;
|
|
|
|
|
|
if (!oldnode || !memcmp(oldnode, node, 20)) {
|
|
|
n->children[k] = -rev - 1;
|
|
|
return 0;
|
|
|
}
|
|
|
noff = nt_new(self);
|
|
|
if (noff == -1)
|
|
|
return -1;
|
|
|
/* self->nt may have been changed by realloc */
|
|
|
self->nt[off].children[k] = noff;
|
|
|
off = noff;
|
|
|
n = &self->nt[off];
|
|
|
n->children[nt_level(oldnode, ++level)] = v;
|
|
|
if (level > self->ntdepth)
|
|
|
self->ntdepth = level;
|
|
|
self->ntsplits += 1;
|
|
|
} else {
|
|
|
level += 1;
|
|
|
off = v;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return -1;
|
|
|
}
|
|
|
|
|
|
static int nt_init(indexObject *self)
|
|
|
{
|
|
|
if (self->nt == NULL) {
|
|
|
if ((size_t)self->raw_length > INT_MAX / sizeof(nodetree)) {
|
|
|
PyErr_SetString(PyExc_ValueError, "overflow in nt_init");
|
|
|
return -1;
|
|
|
}
|
|
|
self->ntcapacity = self->raw_length < 4
|
|
|
? 4 : (int)self->raw_length / 2;
|
|
|
|
|
|
self->nt = calloc(self->ntcapacity, sizeof(nodetree));
|
|
|
if (self->nt == NULL) {
|
|
|
PyErr_NoMemory();
|
|
|
return -1;
|
|
|
}
|
|
|
self->ntlength = 1;
|
|
|
self->ntrev = (int)index_length(self) - 1;
|
|
|
self->ntlookups = 1;
|
|
|
self->ntmisses = 0;
|
|
|
if (nt_insert(self, nullid, INT_MAX) == -1)
|
|
|
return -1;
|
|
|
}
|
|
|
return 0;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Return values:
|
|
|
*
|
|
|
* -3: error (exception set)
|
|
|
* -2: not found (no exception set)
|
|
|
* rest: valid rev
|
|
|
*/
|
|
|
static int index_find_node(indexObject *self,
|
|
|
const char *node, Py_ssize_t nodelen)
|
|
|
{
|
|
|
int rev;
|
|
|
|
|
|
self->ntlookups++;
|
|
|
rev = nt_find(self, node, nodelen, 0);
|
|
|
if (rev >= -1)
|
|
|
return rev;
|
|
|
|
|
|
if (nt_init(self) == -1)
|
|
|
return -3;
|
|
|
|
|
|
/*
|
|
|
* For the first handful of lookups, we scan the entire index,
|
|
|
* and cache only the matching nodes. This optimizes for cases
|
|
|
* like "hg tip", where only a few nodes are accessed.
|
|
|
*
|
|
|
* After that, we cache every node we visit, using a single
|
|
|
* scan amortized over multiple lookups. This gives the best
|
|
|
* bulk performance, e.g. for "hg log".
|
|
|
*/
|
|
|
if (self->ntmisses++ < 4) {
|
|
|
for (rev = self->ntrev - 1; rev >= 0; rev--) {
|
|
|
const char *n = index_node(self, rev);
|
|
|
if (n == NULL)
|
|
|
return -2;
|
|
|
if (memcmp(node, n, nodelen > 20 ? 20 : nodelen) == 0) {
|
|
|
if (nt_insert(self, n, rev) == -1)
|
|
|
return -3;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
} else {
|
|
|
for (rev = self->ntrev - 1; rev >= 0; rev--) {
|
|
|
const char *n = index_node(self, rev);
|
|
|
if (n == NULL) {
|
|
|
self->ntrev = rev + 1;
|
|
|
return -2;
|
|
|
}
|
|
|
if (nt_insert(self, n, rev) == -1) {
|
|
|
self->ntrev = rev + 1;
|
|
|
return -3;
|
|
|
}
|
|
|
if (memcmp(node, n, nodelen > 20 ? 20 : nodelen) == 0) {
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
self->ntrev = rev;
|
|
|
}
|
|
|
|
|
|
if (rev >= 0)
|
|
|
return rev;
|
|
|
return -2;
|
|
|
}
|
|
|
|
|
|
static void raise_revlog_error(void)
|
|
|
{
|
|
|
PyObject *mod = NULL, *dict = NULL, *errclass = NULL;
|
|
|
|
|
|
mod = PyImport_ImportModule("mercurial.error");
|
|
|
if (mod == NULL) {
|
|
|
goto cleanup;
|
|
|
}
|
|
|
|
|
|
dict = PyModule_GetDict(mod);
|
|
|
if (dict == NULL) {
|
|
|
goto cleanup;
|
|
|
}
|
|
|
Py_INCREF(dict);
|
|
|
|
|
|
errclass = PyDict_GetItemString(dict, "RevlogError");
|
|
|
if (errclass == NULL) {
|
|
|
PyErr_SetString(PyExc_SystemError,
|
|
|
"could not find RevlogError");
|
|
|
goto cleanup;
|
|
|
}
|
|
|
|
|
|
/* value of exception is ignored by callers */
|
|
|
PyErr_SetString(errclass, "RevlogError");
|
|
|
|
|
|
cleanup:
|
|
|
Py_XDECREF(dict);
|
|
|
Py_XDECREF(mod);
|
|
|
}
|
|
|
|
|
|
static PyObject *index_getitem(indexObject *self, PyObject *value)
|
|
|
{
|
|
|
char *node;
|
|
|
Py_ssize_t nodelen;
|
|
|
int rev;
|
|
|
|
|
|
if (PyInt_Check(value))
|
|
|
return index_get(self, PyInt_AS_LONG(value));
|
|
|
|
|
|
if (node_check(value, &node, &nodelen) == -1)
|
|
|
return NULL;
|
|
|
rev = index_find_node(self, node, nodelen);
|
|
|
if (rev >= -1)
|
|
|
return PyInt_FromLong(rev);
|
|
|
if (rev == -2)
|
|
|
raise_revlog_error();
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
static int nt_partialmatch(indexObject *self, const char *node,
|
|
|
Py_ssize_t nodelen)
|
|
|
{
|
|
|
int rev;
|
|
|
|
|
|
if (nt_init(self) == -1)
|
|
|
return -3;
|
|
|
|
|
|
if (self->ntrev > 0) {
|
|
|
/* ensure that the radix tree is fully populated */
|
|
|
for (rev = self->ntrev - 1; rev >= 0; rev--) {
|
|
|
const char *n = index_node(self, rev);
|
|
|
if (n == NULL)
|
|
|
return -2;
|
|
|
if (nt_insert(self, n, rev) == -1)
|
|
|
return -3;
|
|
|
}
|
|
|
self->ntrev = rev;
|
|
|
}
|
|
|
|
|
|
return nt_find(self, node, nodelen, 1);
|
|
|
}
|
|
|
|
|
|
static PyObject *index_partialmatch(indexObject *self, PyObject *args)
|
|
|
{
|
|
|
const char *fullnode;
|
|
|
int nodelen;
|
|
|
char *node;
|
|
|
int rev, i;
|
|
|
|
|
|
if (!PyArg_ParseTuple(args, "s#", &node, &nodelen))
|
|
|
return NULL;
|
|
|
|
|
|
if (nodelen < 4) {
|
|
|
PyErr_SetString(PyExc_ValueError, "key too short");
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
if (nodelen > 40) {
|
|
|
PyErr_SetString(PyExc_ValueError, "key too long");
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
for (i = 0; i < nodelen; i++)
|
|
|
hexdigit(node, i);
|
|
|
if (PyErr_Occurred()) {
|
|
|
/* input contains non-hex characters */
|
|
|
PyErr_Clear();
|
|
|
Py_RETURN_NONE;
|
|
|
}
|
|
|
|
|
|
rev = nt_partialmatch(self, node, nodelen);
|
|
|
|
|
|
switch (rev) {
|
|
|
case -4:
|
|
|
raise_revlog_error();
|
|
|
case -3:
|
|
|
return NULL;
|
|
|
case -2:
|
|
|
Py_RETURN_NONE;
|
|
|
case -1:
|
|
|
return PyBytes_FromStringAndSize(nullid, 20);
|
|
|
}
|
|
|
|
|
|
fullnode = index_node(self, rev);
|
|
|
if (fullnode == NULL) {
|
|
|
PyErr_Format(PyExc_IndexError,
|
|
|
"could not access rev %d", rev);
|
|
|
return NULL;
|
|
|
}
|
|
|
return PyBytes_FromStringAndSize(fullnode, 20);
|
|
|
}
|
|
|
|
|
|
static PyObject *index_m_get(indexObject *self, PyObject *args)
|
|
|
{
|
|
|
Py_ssize_t nodelen;
|
|
|
PyObject *val;
|
|
|
char *node;
|
|
|
int rev;
|
|
|
|
|
|
if (!PyArg_ParseTuple(args, "O", &val))
|
|
|
return NULL;
|
|
|
if (node_check(val, &node, &nodelen) == -1)
|
|
|
return NULL;
|
|
|
rev = index_find_node(self, node, nodelen);
|
|
|
if (rev == -3)
|
|
|
return NULL;
|
|
|
if (rev == -2)
|
|
|
Py_RETURN_NONE;
|
|
|
return PyInt_FromLong(rev);
|
|
|
}
|
|
|
|
|
|
static int index_contains(indexObject *self, PyObject *value)
|
|
|
{
|
|
|
char *node;
|
|
|
Py_ssize_t nodelen;
|
|
|
|
|
|
if (PyInt_Check(value)) {
|
|
|
long rev = PyInt_AS_LONG(value);
|
|
|
return rev >= -1 && rev < index_length(self);
|
|
|
}
|
|
|
|
|
|
if (node_check(value, &node, &nodelen) == -1)
|
|
|
return -1;
|
|
|
|
|
|
switch (index_find_node(self, node, nodelen)) {
|
|
|
case -3:
|
|
|
return -1;
|
|
|
case -2:
|
|
|
return 0;
|
|
|
default:
|
|
|
return 1;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
typedef uint64_t bitmask;
|
|
|
|
|
|
/*
|
|
|
* Given a disjoint set of revs, return all candidates for the
|
|
|
* greatest common ancestor. In revset notation, this is the set
|
|
|
* "heads(::a and ::b and ...)"
|
|
|
*/
|
|
|
static PyObject *find_gca_candidates(indexObject *self, const int *revs,
|
|
|
int revcount)
|
|
|
{
|
|
|
const bitmask allseen = (1ull << revcount) - 1;
|
|
|
const bitmask poison = 1ull << revcount;
|
|
|
PyObject *gca = PyList_New(0);
|
|
|
int i, v, interesting;
|
|
|
int maxrev = -1;
|
|
|
bitmask sp;
|
|
|
bitmask *seen;
|
|
|
|
|
|
if (gca == NULL)
|
|
|
return PyErr_NoMemory();
|
|
|
|
|
|
for (i = 0; i < revcount; i++) {
|
|
|
if (revs[i] > maxrev)
|
|
|
maxrev = revs[i];
|
|
|
}
|
|
|
|
|
|
seen = calloc(sizeof(*seen), maxrev + 1);
|
|
|
if (seen == NULL) {
|
|
|
Py_DECREF(gca);
|
|
|
return PyErr_NoMemory();
|
|
|
}
|
|
|
|
|
|
for (i = 0; i < revcount; i++)
|
|
|
seen[revs[i]] = 1ull << i;
|
|
|
|
|
|
interesting = revcount;
|
|
|
|
|
|
for (v = maxrev; v >= 0 && interesting; v--) {
|
|
|
bitmask sv = seen[v];
|
|
|
int parents[2];
|
|
|
|
|
|
if (!sv)
|
|
|
continue;
|
|
|
|
|
|
if (sv < poison) {
|
|
|
interesting -= 1;
|
|
|
if (sv == allseen) {
|
|
|
PyObject *obj = PyInt_FromLong(v);
|
|
|
if (obj == NULL)
|
|
|
goto bail;
|
|
|
if (PyList_Append(gca, obj) == -1) {
|
|
|
Py_DECREF(obj);
|
|
|
goto bail;
|
|
|
}
|
|
|
sv |= poison;
|
|
|
for (i = 0; i < revcount; i++) {
|
|
|
if (revs[i] == v)
|
|
|
goto done;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
if (index_get_parents(self, v, parents, maxrev) < 0)
|
|
|
goto bail;
|
|
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
|
int p = parents[i];
|
|
|
if (p == -1)
|
|
|
continue;
|
|
|
sp = seen[p];
|
|
|
if (sv < poison) {
|
|
|
if (sp == 0) {
|
|
|
seen[p] = sv;
|
|
|
interesting++;
|
|
|
}
|
|
|
else if (sp != sv)
|
|
|
seen[p] |= sv;
|
|
|
} else {
|
|
|
if (sp && sp < poison)
|
|
|
interesting--;
|
|
|
seen[p] = sv;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
done:
|
|
|
free(seen);
|
|
|
return gca;
|
|
|
bail:
|
|
|
free(seen);
|
|
|
Py_XDECREF(gca);
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Given a disjoint set of revs, return the subset with the longest
|
|
|
* path to the root.
|
|
|
*/
|
|
|
static PyObject *find_deepest(indexObject *self, PyObject *revs)
|
|
|
{
|
|
|
const Py_ssize_t revcount = PyList_GET_SIZE(revs);
|
|
|
static const Py_ssize_t capacity = 24;
|
|
|
int *depth, *interesting = NULL;
|
|
|
int i, j, v, ninteresting;
|
|
|
PyObject *dict = NULL, *keys = NULL;
|
|
|
long *seen = NULL;
|
|
|
int maxrev = -1;
|
|
|
long final;
|
|
|
|
|
|
if (revcount > capacity) {
|
|
|
PyErr_Format(PyExc_OverflowError,
|
|
|
"bitset size (%ld) > capacity (%ld)",
|
|
|
(long)revcount, (long)capacity);
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
for (i = 0; i < revcount; i++) {
|
|
|
int n = (int)PyInt_AsLong(PyList_GET_ITEM(revs, i));
|
|
|
if (n > maxrev)
|
|
|
maxrev = n;
|
|
|
}
|
|
|
|
|
|
depth = calloc(sizeof(*depth), maxrev + 1);
|
|
|
if (depth == NULL)
|
|
|
return PyErr_NoMemory();
|
|
|
|
|
|
seen = calloc(sizeof(*seen), maxrev + 1);
|
|
|
if (seen == NULL) {
|
|
|
PyErr_NoMemory();
|
|
|
goto bail;
|
|
|
}
|
|
|
|
|
|
interesting = calloc(sizeof(*interesting), 2 << revcount);
|
|
|
if (interesting == NULL) {
|
|
|
PyErr_NoMemory();
|
|
|
goto bail;
|
|
|
}
|
|
|
|
|
|
if (PyList_Sort(revs) == -1)
|
|
|
goto bail;
|
|
|
|
|
|
for (i = 0; i < revcount; i++) {
|
|
|
int n = (int)PyInt_AsLong(PyList_GET_ITEM(revs, i));
|
|
|
long b = 1l << i;
|
|
|
depth[n] = 1;
|
|
|
seen[n] = b;
|
|
|
interesting[b] = 1;
|
|
|
}
|
|
|
|
|
|
ninteresting = (int)revcount;
|
|
|
|
|
|
for (v = maxrev; v >= 0 && ninteresting > 1; v--) {
|
|
|
int dv = depth[v];
|
|
|
int parents[2];
|
|
|
long sv;
|
|
|
|
|
|
if (dv == 0)
|
|
|
continue;
|
|
|
|
|
|
sv = seen[v];
|
|
|
if (index_get_parents(self, v, parents, maxrev) < 0)
|
|
|
goto bail;
|
|
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
|
int p = parents[i];
|
|
|
long sp;
|
|
|
int dp;
|
|
|
|
|
|
if (p == -1)
|
|
|
continue;
|
|
|
|
|
|
dp = depth[p];
|
|
|
sp = seen[p];
|
|
|
if (dp <= dv) {
|
|
|
depth[p] = dv + 1;
|
|
|
if (sp != sv) {
|
|
|
interesting[sv] += 1;
|
|
|
seen[p] = sv;
|
|
|
if (sp) {
|
|
|
interesting[sp] -= 1;
|
|
|
if (interesting[sp] == 0)
|
|
|
ninteresting -= 1;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
else if (dv == dp - 1) {
|
|
|
long nsp = sp | sv;
|
|
|
if (nsp == sp)
|
|
|
continue;
|
|
|
seen[p] = nsp;
|
|
|
interesting[sp] -= 1;
|
|
|
if (interesting[sp] == 0 && interesting[nsp] > 0)
|
|
|
ninteresting -= 1;
|
|
|
interesting[nsp] += 1;
|
|
|
}
|
|
|
}
|
|
|
interesting[sv] -= 1;
|
|
|
if (interesting[sv] == 0)
|
|
|
ninteresting -= 1;
|
|
|
}
|
|
|
|
|
|
final = 0;
|
|
|
j = ninteresting;
|
|
|
for (i = 0; i < (int)(2 << revcount) && j > 0; i++) {
|
|
|
if (interesting[i] == 0)
|
|
|
continue;
|
|
|
final |= i;
|
|
|
j -= 1;
|
|
|
}
|
|
|
if (final == 0) {
|
|
|
keys = PyList_New(0);
|
|
|
goto bail;
|
|
|
}
|
|
|
|
|
|
dict = PyDict_New();
|
|
|
if (dict == NULL)
|
|
|
goto bail;
|
|
|
|
|
|
for (i = 0; i < revcount; i++) {
|
|
|
PyObject *key;
|
|
|
|
|
|
if ((final & (1 << i)) == 0)
|
|
|
continue;
|
|
|
|
|
|
key = PyList_GET_ITEM(revs, i);
|
|
|
Py_INCREF(key);
|
|
|
Py_INCREF(Py_None);
|
|
|
if (PyDict_SetItem(dict, key, Py_None) == -1) {
|
|
|
Py_DECREF(key);
|
|
|
Py_DECREF(Py_None);
|
|
|
goto bail;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
keys = PyDict_Keys(dict);
|
|
|
|
|
|
bail:
|
|
|
free(depth);
|
|
|
free(seen);
|
|
|
free(interesting);
|
|
|
Py_XDECREF(dict);
|
|
|
|
|
|
return keys;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Given a (possibly overlapping) set of revs, return all the
|
|
|
* common ancestors heads: heads(::args[0] and ::a[1] and ...)
|
|
|
*/
|
|
|
static PyObject *index_commonancestorsheads(indexObject *self, PyObject *args)
|
|
|
{
|
|
|
PyObject *ret = NULL;
|
|
|
Py_ssize_t argcount, i, len;
|
|
|
bitmask repeat = 0;
|
|
|
int revcount = 0;
|
|
|
int *revs;
|
|
|
|
|
|
argcount = PySequence_Length(args);
|
|
|
revs = PyMem_Malloc(argcount * sizeof(*revs));
|
|
|
if (argcount > 0 && revs == NULL)
|
|
|
return PyErr_NoMemory();
|
|
|
len = index_length(self) - 1;
|
|
|
|
|
|
for (i = 0; i < argcount; i++) {
|
|
|
static const int capacity = 24;
|
|
|
PyObject *obj = PySequence_GetItem(args, i);
|
|
|
bitmask x;
|
|
|
long val;
|
|
|
|
|
|
if (!PyInt_Check(obj)) {
|
|
|
PyErr_SetString(PyExc_TypeError,
|
|
|
"arguments must all be ints");
|
|
|
Py_DECREF(obj);
|
|
|
goto bail;
|
|
|
}
|
|
|
val = PyInt_AsLong(obj);
|
|
|
Py_DECREF(obj);
|
|
|
if (val == -1) {
|
|
|
ret = PyList_New(0);
|
|
|
goto done;
|
|
|
}
|
|
|
if (val < 0 || val >= len) {
|
|
|
PyErr_SetString(PyExc_IndexError,
|
|
|
"index out of range");
|
|
|
goto bail;
|
|
|
}
|
|
|
/* this cheesy bloom filter lets us avoid some more
|
|
|
* expensive duplicate checks in the common set-is-disjoint
|
|
|
* case */
|
|
|
x = 1ull << (val & 0x3f);
|
|
|
if (repeat & x) {
|
|
|
int k;
|
|
|
for (k = 0; k < revcount; k++) {
|
|
|
if (val == revs[k])
|
|
|
goto duplicate;
|
|
|
}
|
|
|
}
|
|
|
else repeat |= x;
|
|
|
if (revcount >= capacity) {
|
|
|
PyErr_Format(PyExc_OverflowError,
|
|
|
"bitset size (%d) > capacity (%d)",
|
|
|
revcount, capacity);
|
|
|
goto bail;
|
|
|
}
|
|
|
revs[revcount++] = (int)val;
|
|
|
duplicate:;
|
|
|
}
|
|
|
|
|
|
if (revcount == 0) {
|
|
|
ret = PyList_New(0);
|
|
|
goto done;
|
|
|
}
|
|
|
if (revcount == 1) {
|
|
|
PyObject *obj;
|
|
|
ret = PyList_New(1);
|
|
|
if (ret == NULL)
|
|
|
goto bail;
|
|
|
obj = PyInt_FromLong(revs[0]);
|
|
|
if (obj == NULL)
|
|
|
goto bail;
|
|
|
PyList_SET_ITEM(ret, 0, obj);
|
|
|
goto done;
|
|
|
}
|
|
|
|
|
|
ret = find_gca_candidates(self, revs, revcount);
|
|
|
if (ret == NULL)
|
|
|
goto bail;
|
|
|
|
|
|
done:
|
|
|
PyMem_Free(revs);
|
|
|
return ret;
|
|
|
|
|
|
bail:
|
|
|
PyMem_Free(revs);
|
|
|
Py_XDECREF(ret);
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Given a (possibly overlapping) set of revs, return the greatest
|
|
|
* common ancestors: those with the longest path to the root.
|
|
|
*/
|
|
|
static PyObject *index_ancestors(indexObject *self, PyObject *args)
|
|
|
{
|
|
|
PyObject *ret;
|
|
|
PyObject *gca = index_commonancestorsheads(self, args);
|
|
|
if (gca == NULL)
|
|
|
return NULL;
|
|
|
|
|
|
if (PyList_GET_SIZE(gca) <= 1) {
|
|
|
return gca;
|
|
|
}
|
|
|
|
|
|
ret = find_deepest(self, gca);
|
|
|
Py_DECREF(gca);
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Invalidate any trie entries introduced by added revs.
|
|
|
*/
|
|
|
static void nt_invalidate_added(indexObject *self, Py_ssize_t start)
|
|
|
{
|
|
|
Py_ssize_t i, len = PyList_GET_SIZE(self->added);
|
|
|
|
|
|
for (i = start; i < len; i++) {
|
|
|
PyObject *tuple = PyList_GET_ITEM(self->added, i);
|
|
|
PyObject *node = PyTuple_GET_ITEM(tuple, 7);
|
|
|
|
|
|
nt_insert(self, PyBytes_AS_STRING(node), -1);
|
|
|
}
|
|
|
|
|
|
if (start == 0)
|
|
|
Py_CLEAR(self->added);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Delete a numeric range of revs, which must be at the end of the
|
|
|
* range, but exclude the sentinel nullid entry.
|
|
|
*/
|
|
|
static int index_slice_del(indexObject *self, PyObject *item)
|
|
|
{
|
|
|
Py_ssize_t start, stop, step, slicelength;
|
|
|
Py_ssize_t length = index_length(self);
|
|
|
int ret = 0;
|
|
|
|
|
|
/* Argument changed from PySliceObject* to PyObject* in Python 3. */
|
|
|
#ifdef IS_PY3K
|
|
|
if (PySlice_GetIndicesEx(item, length,
|
|
|
#else
|
|
|
if (PySlice_GetIndicesEx((PySliceObject*)item, length,
|
|
|
#endif
|
|
|
&start, &stop, &step, &slicelength) < 0)
|
|
|
return -1;
|
|
|
|
|
|
if (slicelength <= 0)
|
|
|
return 0;
|
|
|
|
|
|
if ((step < 0 && start < stop) || (step > 0 && start > stop))
|
|
|
stop = start;
|
|
|
|
|
|
if (step < 0) {
|
|
|
stop = start + 1;
|
|
|
start = stop + step*(slicelength - 1) - 1;
|
|
|
step = -step;
|
|
|
}
|
|
|
|
|
|
if (step != 1) {
|
|
|
PyErr_SetString(PyExc_ValueError,
|
|
|
"revlog index delete requires step size of 1");
|
|
|
return -1;
|
|
|
}
|
|
|
|
|
|
if (stop != length - 1) {
|
|
|
PyErr_SetString(PyExc_IndexError,
|
|
|
"revlog index deletion indices are invalid");
|
|
|
return -1;
|
|
|
}
|
|
|
|
|
|
if (start < self->length - 1) {
|
|
|
if (self->nt) {
|
|
|
Py_ssize_t i;
|
|
|
|
|
|
for (i = start + 1; i < self->length - 1; i++) {
|
|
|
const char *node = index_node(self, i);
|
|
|
|
|
|
if (node)
|
|
|
nt_insert(self, node, -1);
|
|
|
}
|
|
|
if (self->added)
|
|
|
nt_invalidate_added(self, 0);
|
|
|
if (self->ntrev > start)
|
|
|
self->ntrev = (int)start;
|
|
|
}
|
|
|
self->length = start + 1;
|
|
|
if (start < self->raw_length) {
|
|
|
if (self->cache) {
|
|
|
Py_ssize_t i;
|
|
|
for (i = start; i < self->raw_length; i++)
|
|
|
Py_CLEAR(self->cache[i]);
|
|
|
}
|
|
|
self->raw_length = start;
|
|
|
}
|
|
|
goto done;
|
|
|
}
|
|
|
|
|
|
if (self->nt) {
|
|
|
nt_invalidate_added(self, start - self->length + 1);
|
|
|
if (self->ntrev > start)
|
|
|
self->ntrev = (int)start;
|
|
|
}
|
|
|
if (self->added)
|
|
|
ret = PyList_SetSlice(self->added, start - self->length + 1,
|
|
|
PyList_GET_SIZE(self->added), NULL);
|
|
|
done:
|
|
|
Py_CLEAR(self->headrevs);
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Supported ops:
|
|
|
*
|
|
|
* slice deletion
|
|
|
* string assignment (extend node->rev mapping)
|
|
|
* string deletion (shrink node->rev mapping)
|
|
|
*/
|
|
|
static int index_assign_subscript(indexObject *self, PyObject *item,
|
|
|
PyObject *value)
|
|
|
{
|
|
|
char *node;
|
|
|
Py_ssize_t nodelen;
|
|
|
long rev;
|
|
|
|
|
|
if (PySlice_Check(item) && value == NULL)
|
|
|
return index_slice_del(self, item);
|
|
|
|
|
|
if (node_check(item, &node, &nodelen) == -1)
|
|
|
return -1;
|
|
|
|
|
|
if (value == NULL)
|
|
|
return self->nt ? nt_insert(self, node, -1) : 0;
|
|
|
rev = PyInt_AsLong(value);
|
|
|
if (rev > INT_MAX || rev < 0) {
|
|
|
if (!PyErr_Occurred())
|
|
|
PyErr_SetString(PyExc_ValueError, "rev out of range");
|
|
|
return -1;
|
|
|
}
|
|
|
|
|
|
if (nt_init(self) == -1)
|
|
|
return -1;
|
|
|
return nt_insert(self, node, (int)rev);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* Find all RevlogNG entries in an index that has inline data. Update
|
|
|
* the optional "offsets" table with those entries.
|
|
|
*/
|
|
|
static Py_ssize_t inline_scan(indexObject *self, const char **offsets)
|
|
|
{
|
|
|
const char *data = (const char *)self->buf.buf;
|
|
|
Py_ssize_t pos = 0;
|
|
|
Py_ssize_t end = self->buf.len;
|
|
|
long incr = v1_hdrsize;
|
|
|
Py_ssize_t len = 0;
|
|
|
|
|
|
while (pos + v1_hdrsize <= end && pos >= 0) {
|
|
|
uint32_t comp_len;
|
|
|
/* 3rd element of header is length of compressed inline data */
|
|
|
comp_len = getbe32(data + pos + 8);
|
|
|
incr = v1_hdrsize + comp_len;
|
|
|
if (offsets)
|
|
|
offsets[len] = data + pos;
|
|
|
len++;
|
|
|
pos += incr;
|
|
|
}
|
|
|
|
|
|
if (pos != end) {
|
|
|
if (!PyErr_Occurred())
|
|
|
PyErr_SetString(PyExc_ValueError, "corrupt index file");
|
|
|
return -1;
|
|
|
}
|
|
|
|
|
|
return len;
|
|
|
}
|
|
|
|
|
|
static int index_init(indexObject *self, PyObject *args)
|
|
|
{
|
|
|
PyObject *data_obj, *inlined_obj;
|
|
|
Py_ssize_t size;
|
|
|
|
|
|
/* Initialize before argument-checking to avoid index_dealloc() crash. */
|
|
|
self->raw_length = 0;
|
|
|
self->added = NULL;
|
|
|
self->cache = NULL;
|
|
|
self->data = NULL;
|
|
|
memset(&self->buf, 0, sizeof(self->buf));
|
|
|
self->headrevs = NULL;
|
|
|
self->filteredrevs = Py_None;
|
|
|
Py_INCREF(Py_None);
|
|
|
self->nt = NULL;
|
|
|
self->offsets = NULL;
|
|
|
|
|
|
if (!PyArg_ParseTuple(args, "OO", &data_obj, &inlined_obj))
|
|
|
return -1;
|
|
|
if (!PyObject_CheckBuffer(data_obj)) {
|
|
|
PyErr_SetString(PyExc_TypeError,
|
|
|
"data does not support buffer interface");
|
|
|
return -1;
|
|
|
}
|
|
|
|
|
|
if (PyObject_GetBuffer(data_obj, &self->buf, PyBUF_SIMPLE) == -1)
|
|
|
return -1;
|
|
|
size = self->buf.len;
|
|
|
|
|
|
self->inlined = inlined_obj && PyObject_IsTrue(inlined_obj);
|
|
|
self->data = data_obj;
|
|
|
|
|
|
self->ntlength = self->ntcapacity = 0;
|
|
|
self->ntdepth = self->ntsplits = 0;
|
|
|
self->ntlookups = self->ntmisses = 0;
|
|
|
self->ntrev = -1;
|
|
|
Py_INCREF(self->data);
|
|
|
|
|
|
if (self->inlined) {
|
|
|
Py_ssize_t len = inline_scan(self, NULL);
|
|
|
if (len == -1)
|
|
|
goto bail;
|
|
|
self->raw_length = len;
|
|
|
self->length = len + 1;
|
|
|
} else {
|
|
|
if (size % v1_hdrsize) {
|
|
|
PyErr_SetString(PyExc_ValueError, "corrupt index file");
|
|
|
goto bail;
|
|
|
}
|
|
|
self->raw_length = size / v1_hdrsize;
|
|
|
self->length = self->raw_length + 1;
|
|
|
}
|
|
|
|
|
|
return 0;
|
|
|
bail:
|
|
|
return -1;
|
|
|
}
|
|
|
|
|
|
static PyObject *index_nodemap(indexObject *self)
|
|
|
{
|
|
|
Py_INCREF(self);
|
|
|
return (PyObject *)self;
|
|
|
}
|
|
|
|
|
|
static void index_dealloc(indexObject *self)
|
|
|
{
|
|
|
_index_clearcaches(self);
|
|
|
Py_XDECREF(self->filteredrevs);
|
|
|
if (self->buf.buf) {
|
|
|
PyBuffer_Release(&self->buf);
|
|
|
memset(&self->buf, 0, sizeof(self->buf));
|
|
|
}
|
|
|
Py_XDECREF(self->data);
|
|
|
Py_XDECREF(self->added);
|
|
|
PyObject_Del(self);
|
|
|
}
|
|
|
|
|
|
static PySequenceMethods index_sequence_methods = {
|
|
|
(lenfunc)index_length, /* sq_length */
|
|
|
0, /* sq_concat */
|
|
|
0, /* sq_repeat */
|
|
|
(ssizeargfunc)index_get, /* sq_item */
|
|
|
0, /* sq_slice */
|
|
|
0, /* sq_ass_item */
|
|
|
0, /* sq_ass_slice */
|
|
|
(objobjproc)index_contains, /* sq_contains */
|
|
|
};
|
|
|
|
|
|
static PyMappingMethods index_mapping_methods = {
|
|
|
(lenfunc)index_length, /* mp_length */
|
|
|
(binaryfunc)index_getitem, /* mp_subscript */
|
|
|
(objobjargproc)index_assign_subscript, /* mp_ass_subscript */
|
|
|
};
|
|
|
|
|
|
static PyMethodDef index_methods[] = {
|
|
|
{"ancestors", (PyCFunction)index_ancestors, METH_VARARGS,
|
|
|
"return the gca set of the given revs"},
|
|
|
{"commonancestorsheads", (PyCFunction)index_commonancestorsheads,
|
|
|
METH_VARARGS,
|
|
|
"return the heads of the common ancestors of the given revs"},
|
|
|
{"clearcaches", (PyCFunction)index_clearcaches, METH_NOARGS,
|
|
|
"clear the index caches"},
|
|
|
{"get", (PyCFunction)index_m_get, METH_VARARGS,
|
|
|
"get an index entry"},
|
|
|
{"computephasesmapsets", (PyCFunction)compute_phases_map_sets,
|
|
|
METH_VARARGS, "compute phases"},
|
|
|
{"reachableroots2", (PyCFunction)reachableroots2, METH_VARARGS,
|
|
|
"reachableroots"},
|
|
|
{"headrevs", (PyCFunction)index_headrevs, METH_VARARGS,
|
|
|
"get head revisions"}, /* Can do filtering since 3.2 */
|
|
|
{"headrevsfiltered", (PyCFunction)index_headrevs, METH_VARARGS,
|
|
|
"get filtered head revisions"}, /* Can always do filtering */
|
|
|
{"insert", (PyCFunction)index_insert, METH_VARARGS,
|
|
|
"insert an index entry"},
|
|
|
{"partialmatch", (PyCFunction)index_partialmatch, METH_VARARGS,
|
|
|
"match a potentially ambiguous node ID"},
|
|
|
{"stats", (PyCFunction)index_stats, METH_NOARGS,
|
|
|
"stats for the index"},
|
|
|
{NULL} /* Sentinel */
|
|
|
};
|
|
|
|
|
|
static PyGetSetDef index_getset[] = {
|
|
|
{"nodemap", (getter)index_nodemap, NULL, "nodemap", NULL},
|
|
|
{NULL} /* Sentinel */
|
|
|
};
|
|
|
|
|
|
static PyTypeObject indexType = {
|
|
|
PyVarObject_HEAD_INIT(NULL, 0)
|
|
|
"parsers.index", /* tp_name */
|
|
|
sizeof(indexObject), /* tp_basicsize */
|
|
|
0, /* tp_itemsize */
|
|
|
(destructor)index_dealloc, /* tp_dealloc */
|
|
|
0, /* tp_print */
|
|
|
0, /* tp_getattr */
|
|
|
0, /* tp_setattr */
|
|
|
0, /* tp_compare */
|
|
|
0, /* tp_repr */
|
|
|
0, /* tp_as_number */
|
|
|
&index_sequence_methods, /* tp_as_sequence */
|
|
|
&index_mapping_methods, /* tp_as_mapping */
|
|
|
0, /* tp_hash */
|
|
|
0, /* tp_call */
|
|
|
0, /* tp_str */
|
|
|
0, /* tp_getattro */
|
|
|
0, /* tp_setattro */
|
|
|
0, /* tp_as_buffer */
|
|
|
Py_TPFLAGS_DEFAULT, /* tp_flags */
|
|
|
"revlog index", /* tp_doc */
|
|
|
0, /* tp_traverse */
|
|
|
0, /* tp_clear */
|
|
|
0, /* tp_richcompare */
|
|
|
0, /* tp_weaklistoffset */
|
|
|
0, /* tp_iter */
|
|
|
0, /* tp_iternext */
|
|
|
index_methods, /* tp_methods */
|
|
|
0, /* tp_members */
|
|
|
index_getset, /* tp_getset */
|
|
|
0, /* tp_base */
|
|
|
0, /* tp_dict */
|
|
|
0, /* tp_descr_get */
|
|
|
0, /* tp_descr_set */
|
|
|
0, /* tp_dictoffset */
|
|
|
(initproc)index_init, /* tp_init */
|
|
|
0, /* tp_alloc */
|
|
|
};
|
|
|
|
|
|
/*
|
|
|
* returns a tuple of the form (index, index, cache) with elements as
|
|
|
* follows:
|
|
|
*
|
|
|
* index: an index object that lazily parses RevlogNG records
|
|
|
* cache: if data is inlined, a tuple (0, index_file_content), else None
|
|
|
* index_file_content could be a string, or a buffer
|
|
|
*
|
|
|
* added complications are for backwards compatibility
|
|
|
*/
|
|
|
PyObject *parse_index2(PyObject *self, PyObject *args)
|
|
|
{
|
|
|
PyObject *tuple = NULL, *cache = NULL;
|
|
|
indexObject *idx;
|
|
|
int ret;
|
|
|
|
|
|
idx = PyObject_New(indexObject, &indexType);
|
|
|
if (idx == NULL)
|
|
|
goto bail;
|
|
|
|
|
|
ret = index_init(idx, args);
|
|
|
if (ret == -1)
|
|
|
goto bail;
|
|
|
|
|
|
if (idx->inlined) {
|
|
|
cache = Py_BuildValue("iO", 0, idx->data);
|
|
|
if (cache == NULL)
|
|
|
goto bail;
|
|
|
} else {
|
|
|
cache = Py_None;
|
|
|
Py_INCREF(cache);
|
|
|
}
|
|
|
|
|
|
tuple = Py_BuildValue("NN", idx, cache);
|
|
|
if (!tuple)
|
|
|
goto bail;
|
|
|
return tuple;
|
|
|
|
|
|
bail:
|
|
|
Py_XDECREF(idx);
|
|
|
Py_XDECREF(cache);
|
|
|
Py_XDECREF(tuple);
|
|
|
return NULL;
|
|
|
}
|
|
|
|
|
|
void revlog_module_init(PyObject *mod)
|
|
|
{
|
|
|
indexType.tp_new = PyType_GenericNew;
|
|
|
if (PyType_Ready(&indexType) < 0 ||
|
|
|
PyType_Ready(&dirstateTupleType) < 0)
|
|
|
return;
|
|
|
Py_INCREF(&indexType);
|
|
|
PyModule_AddObject(mod, "index", (PyObject *)&indexType);
|
|
|
|
|
|
nullentry = Py_BuildValue("iiiiiiis#", 0, 0, 0,
|
|
|
-1, -1, -1, -1, nullid, 20);
|
|
|
if (nullentry)
|
|
|
PyObject_GC_UnTrack(nullentry);
|
|
|
}
|
|
|
|