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4441f427 HWN |
1 | |
2 | #include "refs-internal.h" | |
3 | #include "trace.h" | |
4 | ||
5 | static struct trace_key trace_refs = TRACE_KEY_INIT(REFS); | |
6 | ||
7 | struct debug_ref_store { | |
8 | struct ref_store base; | |
9 | struct ref_store *refs; | |
10 | }; | |
11 | ||
12 | extern struct ref_storage_be refs_be_debug; | |
13 | ||
14 | struct ref_store *maybe_debug_wrap_ref_store(const char *gitdir, struct ref_store *store) | |
15 | { | |
16 | struct debug_ref_store *res; | |
17 | struct ref_storage_be *be_copy; | |
18 | ||
19 | if (!trace_want(&trace_refs)) { | |
20 | return store; | |
21 | } | |
22 | res = xmalloc(sizeof(struct debug_ref_store)); | |
23 | be_copy = xmalloc(sizeof(*be_copy)); | |
24 | *be_copy = refs_be_debug; | |
25 | /* we never deallocate backends, so safe to copy the pointer. */ | |
26 | be_copy->name = store->be->name; | |
27 | trace_printf_key(&trace_refs, "ref_store for %s\n", gitdir); | |
28 | res->refs = store; | |
29 | base_ref_store_init((struct ref_store *)res, be_copy); | |
30 | return (struct ref_store *)res; | |
31 | } | |
32 | ||
33 | static int debug_init_db(struct ref_store *refs, struct strbuf *err) | |
34 | { | |
35 | struct debug_ref_store *drefs = (struct debug_ref_store *)refs; | |
36 | int res = drefs->refs->be->init_db(drefs->refs, err); | |
37 | trace_printf_key(&trace_refs, "init_db: %d\n", res); | |
38 | return res; | |
39 | } | |
40 | ||
41 | static int debug_transaction_prepare(struct ref_store *refs, | |
42 | struct ref_transaction *transaction, | |
43 | struct strbuf *err) | |
44 | { | |
45 | struct debug_ref_store *drefs = (struct debug_ref_store *)refs; | |
46 | int res; | |
47 | transaction->ref_store = drefs->refs; | |
48 | res = drefs->refs->be->transaction_prepare(drefs->refs, transaction, | |
49 | err); | |
50 | trace_printf_key(&trace_refs, "transaction_prepare: %d\n", res); | |
51 | return res; | |
52 | } | |
53 | ||
54 | static void print_update(int i, const char *refname, | |
55 | const struct object_id *old_oid, | |
56 | const struct object_id *new_oid, unsigned int flags, | |
57 | unsigned int type, const char *msg) | |
58 | { | |
59 | char o[GIT_MAX_HEXSZ + 1] = "null"; | |
60 | char n[GIT_MAX_HEXSZ + 1] = "null"; | |
61 | if (old_oid) | |
62 | oid_to_hex_r(o, old_oid); | |
63 | if (new_oid) | |
64 | oid_to_hex_r(n, new_oid); | |
65 | ||
66 | type &= 0xf; /* see refs.h REF_* */ | |
67 | flags &= REF_HAVE_NEW | REF_HAVE_OLD | REF_NO_DEREF | | |
68 | REF_FORCE_CREATE_REFLOG; | |
69 | trace_printf_key(&trace_refs, "%d: %s %s -> %s (F=0x%x, T=0x%x) \"%s\"\n", i, refname, | |
70 | o, n, flags, type, msg); | |
71 | } | |
72 | ||
73 | static void print_transaction(struct ref_transaction *transaction) | |
74 | { | |
75 | int i; | |
76 | trace_printf_key(&trace_refs, "transaction {\n"); | |
77 | for (i = 0; i < transaction->nr; i++) { | |
78 | struct ref_update *u = transaction->updates[i]; | |
79 | print_update(i, u->refname, &u->old_oid, &u->new_oid, u->flags, | |
80 | u->type, u->msg); | |
81 | } | |
82 | trace_printf_key(&trace_refs, "}\n"); | |
83 | } | |
84 | ||
85 | static int debug_transaction_finish(struct ref_store *refs, | |
86 | struct ref_transaction *transaction, | |
87 | struct strbuf *err) | |
88 | { | |
89 | struct debug_ref_store *drefs = (struct debug_ref_store *)refs; | |
90 | int res; | |
91 | transaction->ref_store = drefs->refs; | |
92 | res = drefs->refs->be->transaction_finish(drefs->refs, transaction, | |
93 | err); | |
94 | print_transaction(transaction); | |
95 | trace_printf_key(&trace_refs, "finish: %d\n", res); | |
96 | return res; | |
97 | } | |
98 | ||
99 | static int debug_transaction_abort(struct ref_store *refs, | |
100 | struct ref_transaction *transaction, | |
101 | struct strbuf *err) | |
102 | { | |
103 | struct debug_ref_store *drefs = (struct debug_ref_store *)refs; | |
104 | int res; | |
105 | transaction->ref_store = drefs->refs; | |
106 | res = drefs->refs->be->transaction_abort(drefs->refs, transaction, err); | |
107 | return res; | |
108 | } | |
109 | ||
110 | static int debug_initial_transaction_commit(struct ref_store *refs, | |
111 | struct ref_transaction *transaction, | |
112 | struct strbuf *err) | |
113 | { | |
114 | struct debug_ref_store *drefs = (struct debug_ref_store *)refs; | |
115 | int res; | |
116 | transaction->ref_store = drefs->refs; | |
117 | res = drefs->refs->be->initial_transaction_commit(drefs->refs, | |
118 | transaction, err); | |
119 | return res; | |
120 | } | |
121 | ||
122 | static int debug_pack_refs(struct ref_store *ref_store, unsigned int flags) | |
123 | { | |
124 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
125 | int res = drefs->refs->be->pack_refs(drefs->refs, flags); | |
126 | trace_printf_key(&trace_refs, "pack_refs: %d\n", res); | |
127 | return res; | |
128 | } | |
129 | ||
130 | static int debug_create_symref(struct ref_store *ref_store, | |
131 | const char *ref_name, const char *target, | |
132 | const char *logmsg) | |
133 | { | |
134 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
135 | int res = drefs->refs->be->create_symref(drefs->refs, ref_name, target, | |
136 | logmsg); | |
137 | trace_printf_key(&trace_refs, "create_symref: %s -> %s \"%s\": %d\n", ref_name, | |
138 | target, logmsg, res); | |
139 | return res; | |
140 | } | |
141 | ||
142 | static int debug_delete_refs(struct ref_store *ref_store, const char *msg, | |
143 | struct string_list *refnames, unsigned int flags) | |
144 | { | |
145 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
146 | int res = | |
147 | drefs->refs->be->delete_refs(drefs->refs, msg, refnames, flags); | |
148 | int i; | |
149 | trace_printf_key(&trace_refs, "delete_refs {\n"); | |
150 | for (i = 0; i < refnames->nr; i++) | |
151 | trace_printf_key(&trace_refs, "%s\n", refnames->items[i].string); | |
152 | trace_printf_key(&trace_refs, "}: %d\n", res); | |
153 | return res; | |
154 | } | |
155 | ||
156 | static int debug_rename_ref(struct ref_store *ref_store, const char *oldref, | |
157 | const char *newref, const char *logmsg) | |
158 | { | |
159 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
160 | int res = drefs->refs->be->rename_ref(drefs->refs, oldref, newref, | |
161 | logmsg); | |
162 | trace_printf_key(&trace_refs, "rename_ref: %s -> %s \"%s\": %d\n", oldref, newref, | |
163 | logmsg, res); | |
164 | return res; | |
165 | } | |
166 | ||
167 | static int debug_copy_ref(struct ref_store *ref_store, const char *oldref, | |
168 | const char *newref, const char *logmsg) | |
169 | { | |
170 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
171 | int res = | |
172 | drefs->refs->be->copy_ref(drefs->refs, oldref, newref, logmsg); | |
173 | trace_printf_key(&trace_refs, "copy_ref: %s -> %s \"%s\": %d\n", oldref, newref, | |
174 | logmsg, res); | |
175 | return res; | |
176 | } | |
177 | ||
178 | struct debug_ref_iterator { | |
179 | struct ref_iterator base; | |
180 | struct ref_iterator *iter; | |
181 | }; | |
182 | ||
183 | static int debug_ref_iterator_advance(struct ref_iterator *ref_iterator) | |
184 | { | |
185 | struct debug_ref_iterator *diter = | |
186 | (struct debug_ref_iterator *)ref_iterator; | |
187 | int res = diter->iter->vtable->advance(diter->iter); | |
188 | if (res) | |
189 | trace_printf_key(&trace_refs, "iterator_advance: (%d)\n", res); | |
190 | else | |
191 | trace_printf_key(&trace_refs, "iterator_advance: %s (0)\n", | |
192 | diter->iter->refname); | |
193 | ||
194 | diter->base.ordered = diter->iter->ordered; | |
195 | diter->base.refname = diter->iter->refname; | |
196 | diter->base.oid = diter->iter->oid; | |
197 | diter->base.flags = diter->iter->flags; | |
198 | return res; | |
199 | } | |
200 | ||
201 | static int debug_ref_iterator_peel(struct ref_iterator *ref_iterator, | |
202 | struct object_id *peeled) | |
203 | { | |
204 | struct debug_ref_iterator *diter = | |
205 | (struct debug_ref_iterator *)ref_iterator; | |
206 | int res = diter->iter->vtable->peel(diter->iter, peeled); | |
207 | trace_printf_key(&trace_refs, "iterator_peel: %s: %d\n", diter->iter->refname, res); | |
208 | return res; | |
209 | } | |
210 | ||
211 | static int debug_ref_iterator_abort(struct ref_iterator *ref_iterator) | |
212 | { | |
213 | struct debug_ref_iterator *diter = | |
214 | (struct debug_ref_iterator *)ref_iterator; | |
215 | int res = diter->iter->vtable->abort(diter->iter); | |
216 | trace_printf_key(&trace_refs, "iterator_abort: %d\n", res); | |
217 | return res; | |
218 | } | |
219 | ||
220 | static struct ref_iterator_vtable debug_ref_iterator_vtable = { | |
221 | debug_ref_iterator_advance, debug_ref_iterator_peel, | |
222 | debug_ref_iterator_abort | |
223 | }; | |
224 | ||
225 | static struct ref_iterator * | |
226 | debug_ref_iterator_begin(struct ref_store *ref_store, const char *prefix, | |
227 | unsigned int flags) | |
228 | { | |
229 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
230 | struct ref_iterator *res = | |
231 | drefs->refs->be->iterator_begin(drefs->refs, prefix, flags); | |
232 | struct debug_ref_iterator *diter = xcalloc(1, sizeof(*diter)); | |
233 | base_ref_iterator_init(&diter->base, &debug_ref_iterator_vtable, 1); | |
234 | diter->iter = res; | |
235 | trace_printf_key(&trace_refs, "ref_iterator_begin: %s (0x%x)\n", prefix, flags); | |
236 | return &diter->base; | |
237 | } | |
238 | ||
239 | static int debug_read_raw_ref(struct ref_store *ref_store, const char *refname, | |
240 | struct object_id *oid, struct strbuf *referent, | |
241 | unsigned int *type) | |
242 | { | |
243 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
244 | int res = 0; | |
245 | ||
246 | oidcpy(oid, &null_oid); | |
247 | res = drefs->refs->be->read_raw_ref(drefs->refs, refname, oid, referent, | |
248 | type); | |
249 | ||
250 | if (res == 0) { | |
251 | trace_printf_key(&trace_refs, "read_raw_ref: %s: %s (=> %s) type %x: %d\n", | |
252 | refname, oid_to_hex(oid), referent->buf, *type, res); | |
253 | } else { | |
254 | trace_printf_key(&trace_refs, "read_raw_ref: %s: %d\n", refname, res); | |
255 | } | |
256 | return res; | |
257 | } | |
258 | ||
259 | static struct ref_iterator * | |
260 | debug_reflog_iterator_begin(struct ref_store *ref_store) | |
261 | { | |
262 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
263 | struct ref_iterator *res = | |
264 | drefs->refs->be->reflog_iterator_begin(drefs->refs); | |
265 | trace_printf_key(&trace_refs, "for_each_reflog_iterator_begin\n"); | |
266 | return res; | |
267 | } | |
268 | ||
269 | struct debug_reflog { | |
270 | const char *refname; | |
271 | each_reflog_ent_fn *fn; | |
272 | void *cb_data; | |
273 | }; | |
274 | ||
275 | static int debug_print_reflog_ent(struct object_id *old_oid, | |
276 | struct object_id *new_oid, | |
277 | const char *committer, timestamp_t timestamp, | |
278 | int tz, const char *msg, void *cb_data) | |
279 | { | |
280 | struct debug_reflog *dbg = (struct debug_reflog *)cb_data; | |
281 | int ret; | |
282 | char o[GIT_MAX_HEXSZ + 1] = "null"; | |
283 | char n[GIT_MAX_HEXSZ + 1] = "null"; | |
284 | if (old_oid) | |
285 | oid_to_hex_r(o, old_oid); | |
286 | if (new_oid) | |
287 | oid_to_hex_r(n, new_oid); | |
288 | ||
289 | ret = dbg->fn(old_oid, new_oid, committer, timestamp, tz, msg, | |
290 | dbg->cb_data); | |
291 | trace_printf_key(&trace_refs, "reflog_ent %s (ret %d): %s -> %s, %s %ld \"%s\"\n", | |
292 | dbg->refname, ret, o, n, committer, (long int)timestamp, msg); | |
293 | return ret; | |
294 | } | |
295 | ||
296 | static int debug_for_each_reflog_ent(struct ref_store *ref_store, | |
297 | const char *refname, each_reflog_ent_fn fn, | |
298 | void *cb_data) | |
299 | { | |
300 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
301 | struct debug_reflog dbg = { | |
302 | .refname = refname, | |
303 | .fn = fn, | |
304 | .cb_data = cb_data, | |
305 | }; | |
306 | ||
307 | int res = drefs->refs->be->for_each_reflog_ent( | |
308 | drefs->refs, refname, &debug_print_reflog_ent, &dbg); | |
309 | trace_printf_key(&trace_refs, "for_each_reflog: %s: %d\n", refname, res); | |
310 | return res; | |
311 | } | |
312 | ||
313 | static int debug_for_each_reflog_ent_reverse(struct ref_store *ref_store, | |
314 | const char *refname, | |
315 | each_reflog_ent_fn fn, | |
316 | void *cb_data) | |
317 | { | |
318 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
319 | struct debug_reflog dbg = { | |
320 | .refname = refname, | |
321 | .fn = fn, | |
322 | .cb_data = cb_data, | |
323 | }; | |
324 | int res = drefs->refs->be->for_each_reflog_ent_reverse( | |
325 | drefs->refs, refname, &debug_print_reflog_ent, &dbg); | |
326 | trace_printf_key(&trace_refs, "for_each_reflog_reverse: %s: %d\n", refname, res); | |
327 | return res; | |
328 | } | |
329 | ||
330 | static int debug_reflog_exists(struct ref_store *ref_store, const char *refname) | |
331 | { | |
332 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
333 | int res = drefs->refs->be->reflog_exists(drefs->refs, refname); | |
334 | trace_printf_key(&trace_refs, "reflog_exists: %s: %d\n", refname, res); | |
335 | return res; | |
336 | } | |
337 | ||
338 | static int debug_create_reflog(struct ref_store *ref_store, const char *refname, | |
339 | int force_create, struct strbuf *err) | |
340 | { | |
341 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
342 | int res = drefs->refs->be->create_reflog(drefs->refs, refname, | |
343 | force_create, err); | |
344 | trace_printf_key(&trace_refs, "create_reflog: %s: %d\n", refname, res); | |
345 | return res; | |
346 | } | |
347 | ||
348 | static int debug_delete_reflog(struct ref_store *ref_store, const char *refname) | |
349 | { | |
350 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
351 | int res = drefs->refs->be->delete_reflog(drefs->refs, refname); | |
352 | trace_printf_key(&trace_refs, "delete_reflog: %s: %d\n", refname, res); | |
353 | return res; | |
354 | } | |
355 | ||
356 | static int debug_reflog_expire(struct ref_store *ref_store, const char *refname, | |
357 | const struct object_id *oid, unsigned int flags, | |
358 | reflog_expiry_prepare_fn prepare_fn, | |
359 | reflog_expiry_should_prune_fn should_prune_fn, | |
360 | reflog_expiry_cleanup_fn cleanup_fn, | |
361 | void *policy_cb_data) | |
362 | { | |
363 | struct debug_ref_store *drefs = (struct debug_ref_store *)ref_store; | |
364 | int res = drefs->refs->be->reflog_expire(drefs->refs, refname, oid, | |
365 | flags, prepare_fn, | |
366 | should_prune_fn, cleanup_fn, | |
367 | policy_cb_data); | |
368 | trace_printf_key(&trace_refs, "reflog_expire: %s: %d\n", refname, res); | |
369 | return res; | |
370 | } | |
371 | ||
372 | struct ref_storage_be refs_be_debug = { | |
373 | NULL, | |
374 | "debug", | |
375 | NULL, | |
376 | debug_init_db, | |
377 | debug_transaction_prepare, | |
378 | debug_transaction_finish, | |
379 | debug_transaction_abort, | |
380 | debug_initial_transaction_commit, | |
381 | ||
382 | debug_pack_refs, | |
383 | debug_create_symref, | |
384 | debug_delete_refs, | |
385 | debug_rename_ref, | |
386 | debug_copy_ref, | |
387 | ||
388 | debug_ref_iterator_begin, | |
389 | debug_read_raw_ref, | |
390 | ||
391 | debug_reflog_iterator_begin, | |
392 | debug_for_each_reflog_ent, | |
393 | debug_for_each_reflog_ent_reverse, | |
394 | debug_reflog_exists, | |
395 | debug_create_reflog, | |
396 | debug_delete_reflog, | |
397 | debug_reflog_expire, | |
398 | }; |