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authorLars Hjemli <hjemli@gmail.com>2006-12-10 21:31:36 (UTC)
committer Lars Hjemli <hjemli@gmail.com>2006-12-10 21:31:36 (UTC)
commit25105d7ecaba474d4b7c364ebb586aac3dfc5abb (patch) (unidiff)
tree8beb08db1399b8efb8c7fbcd936044ae7fc232e6 /git.h
parent856c026e221d8ed82c5b75bc8da4bd65e89ea953 (diff)
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Add caching infrastructure
This enables internal caching of page output. Page requests are split into four groups: 1) repo listing (front page) 2) repo summary 3) repo pages w/symbolic references in query string 4) repo pages w/constant sha1's in query string Each group has a TTL specified in minutes. When a page is requested, a cached filename is stat(2)'ed and st_mtime is compared to time(2). If TTL has expired (or the file didn't exist), the cached file is regenerated. When generating a cached file, locking is used to avoid parallell processing of the request. If multiple processes tries to aquire the same lock, the ones who fail to get the lock serves the (expired) cached file. If the cached file don't exist, the process instead calls sched_yield(2) before restarting the request processing. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Diffstat (limited to 'git.h') (more/less context) (ignore whitespace changes)
-rw-r--r--git.h60
1 files changed, 55 insertions, 5 deletions
diff --git a/git.h b/git.h
index 443f216..dfa3542 100644
--- a/git.h
+++ b/git.h
@@ -20,32 +20,52 @@
20#include <stdio.h> 20#include <stdio.h>
21#include <sys/stat.h> 21#include <sys/stat.h>
22#include <fcntl.h> 22#include <fcntl.h>
23#include <stddef.h> 23#include <stddef.h>
24#include <stdlib.h> 24#include <stdlib.h>
25#include <stdarg.h> 25#include <stdarg.h>
26#include <string.h> 26#include <string.h>
27#include <errno.h> 27#include <errno.h>
28#include <limits.h> 28#include <limits.h>
29#include <sys/param.h> 29#include <sys/param.h>
30#include <netinet/in.h> 30#include <netinet/in.h>
31#include <sys/types.h> 31#include <sys/types.h>
32#include <dirent.h> 32#include <dirent.h>
33#include <time.h> 33#include <time.h>
34 34
35 35
36/* On most systems <limits.h> would have given us this, but
37 * not on some systems (e.g. GNU/Hurd).
38 */
39#ifndef PATH_MAX
40#define PATH_MAX 4096
41#endif
42
43#ifdef __GNUC__
44#define NORETURN __attribute__((__noreturn__))
45#else
46#define NORETURN
47#ifndef __attribute__
48#define __attribute__(x)
49#endif
50#endif
51
52
53extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
54
55
36static inline char* xstrdup(const char *str) 56static inline char* xstrdup(const char *str)
37{ 57{
38 char *ret = strdup(str); 58 char *ret = strdup(str);
39 if (!ret) 59 if (!ret)
40 die("Out of memory, strdup failed"); 60 die("Out of memory, strdup failed");
41 return ret; 61 return ret;
42} 62}
43 63
44static inline void *xmalloc(size_t size) 64static inline void *xmalloc(size_t size)
45{ 65{
46 void *ret = malloc(size); 66 void *ret = malloc(size);
47 if (!ret && !size) 67 if (!ret && !size)
48 ret = malloc(1); 68 ret = malloc(1);
49 if (!ret) 69 if (!ret)
50 die("Out of memory, malloc failed"); 70 die("Out of memory, malloc failed");
51#ifdef XMALLOC_POISON 71#ifdef XMALLOC_POISON
@@ -95,35 +115,39 @@ static inline ssize_t xwrite(int fd, const void *buf, size_t len)
95 return nr; 115 return nr;
96 } 116 }
97} 117}
98 118
99 119
100 120
101 121
102/* 122/*
103 * from git:cache.h 123 * from git:cache.h
104 */ 124 */
105 125
106 126
107/* Convert to/from hex/sha1 representation */ 127/* Convert to/from hex/sha1 representation */
108#define MINIMUM_ABBREV 4 128#define MINIMUM_ABBREV 4
109#define DEFAULT_ABBREV 7 129#define DEFAULT_ABBREV 7
110 130
131extern int sha1_object_info(const unsigned char *, char *, unsigned long *);
111 132
112extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size); 133extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
113 134
135extern int get_sha1(const char *str, unsigned char *sha1);
136extern int get_sha1_hex(const char *hex, unsigned char *sha1);
137 extern char *sha1_to_hex(const unsigned char *sha1);/* static buffer result! */
114 138
115 139
116 140
117/* 141/*
118 * from git:object.h 142 * from git:object.h
119 */ 143 */
120 144
121struct object_list { 145struct object_list {
122 struct object *item; 146 struct object *item;
123 struct object_list *next; 147 struct object_list *next;
124}; 148};
125 149
126struct object_refs { 150struct object_refs {
127 unsigned count; 151 unsigned count;
128 struct object *base; 152 struct object *base;
129 struct object *ref[FLEX_ARRAY]; /* more */ 153 struct object *ref[FLEX_ARRAY]; /* more */
@@ -170,53 +194,64 @@ struct tree {
170 194
171struct commit_list { 195struct commit_list {
172 struct commit *item; 196 struct commit *item;
173 struct commit_list *next; 197 struct commit_list *next;
174}; 198};
175 199
176struct commit { 200struct commit {
177 struct object object; 201 struct object object;
178 void *util; 202 void *util;
179 unsigned long date; 203 unsigned long date;
180 struct commit_list *parents; 204 struct commit_list *parents;
181 struct tree *tree; 205 struct tree *tree;
182 char *buffer; 206 char *buffer;
183}; 207};
184 208
185 209
210struct commit *lookup_commit(const unsigned char *sha1);
211struct commit *lookup_commit_reference(const unsigned char *sha1);
212struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
213 int quiet);
214
215int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
216int parse_commit(struct commit *item);
217
218struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
219struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
220
221void free_commit_list(struct commit_list *list);
222
223void sort_by_date(struct commit_list **list);
224
186/* Commit formats */ 225/* Commit formats */
187enum cmit_fmt { 226enum cmit_fmt {
188 CMIT_FMT_RAW, 227 CMIT_FMT_RAW,
189 CMIT_FMT_MEDIUM, 228 CMIT_FMT_MEDIUM,
190 CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM, 229 CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
191 CMIT_FMT_SHORT, 230 CMIT_FMT_SHORT,
192 CMIT_FMT_FULL, 231 CMIT_FMT_FULL,
193 CMIT_FMT_FULLER, 232 CMIT_FMT_FULLER,
194 CMIT_FMT_ONELINE, 233 CMIT_FMT_ONELINE,
195 CMIT_FMT_EMAIL, 234 CMIT_FMT_EMAIL,
196 235
197 CMIT_FMT_UNSPECIFIED, 236 CMIT_FMT_UNSPECIFIED,
198}; 237};
199 238
239extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char *buf, unsigned long space, int abbrev, const char *subject, const char *after_subject, int relative_date);
200 240
201 241
202struct commit *lookup_commit(const unsigned char *sha1);
203struct commit *lookup_commit_reference(const unsigned char *sha1);
204struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
205 int quiet);
206
207typedef void (*topo_sort_set_fn_t)(struct commit*, void *data); 242typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
208typedef void* (*topo_sort_get_fn_t)(struct commit*); 243typedef void* (*topo_sort_get_fn_t)(struct commit*);
209 244
210 245
211 246
212 247
213/* 248/*
214 * from git:diff.h 249 * from git:diff.h
215 */ 250 */
216 251
217 252
218struct rev_info; 253struct rev_info;
219struct diff_options; 254struct diff_options;
220struct diff_queue_struct; 255struct diff_queue_struct;
221 256
222typedef void (*change_fn_t)(struct diff_options *options, 257typedef void (*change_fn_t)(struct diff_options *options,
@@ -293,32 +328,42 @@ struct diff_options {
293}; 328};
294 329
295enum color_diff { 330enum color_diff {
296 DIFF_RESET = 0, 331 DIFF_RESET = 0,
297 DIFF_PLAIN = 1, 332 DIFF_PLAIN = 1,
298 DIFF_METAINFO = 2, 333 DIFF_METAINFO = 2,
299 DIFF_FRAGINFO = 3, 334 DIFF_FRAGINFO = 3,
300 DIFF_FILE_OLD = 4, 335 DIFF_FILE_OLD = 4,
301 DIFF_FILE_NEW = 5, 336 DIFF_FILE_NEW = 5,
302 DIFF_COMMIT = 6, 337 DIFF_COMMIT = 6,
303 DIFF_WHITESPACE = 7, 338 DIFF_WHITESPACE = 7,
304}; 339};
305 340
306 341
307 342
308 343
344/*
345 * from git:refs.g
346 */
347
348typedef int each_ref_fn(const char *refname, const unsigned char *sha1, int flags, void *cb_data);
349extern int head_ref(each_ref_fn, void *);
350extern int for_each_ref(each_ref_fn, void *);
351extern int for_each_tag_ref(each_ref_fn, void *);
352extern int for_each_branch_ref(each_ref_fn, void *);
353extern int for_each_remote_ref(each_ref_fn, void *);
309 354
310 355
311 356
312/* 357/*
313 * from git:revision.h 358 * from git:revision.h
314 */ 359 */
315 360
316struct rev_info; 361struct rev_info;
317struct log_info; 362struct log_info;
318 363
319typedef void (prune_fn_t)(struct rev_info *revs, struct commit *commit); 364typedef void (prune_fn_t)(struct rev_info *revs, struct commit *commit);
320 365
321struct rev_info { 366struct rev_info {
322 /* Starting list */ 367 /* Starting list */
323 struct commit_list *commits; 368 struct commit_list *commits;
324 struct object_array pending; 369 struct object_array pending;
@@ -378,22 +423,27 @@ struct rev_info {
378 struct grep_opt*grep_filter; 423 struct grep_opt*grep_filter;
379 424
380 /* special limits */ 425 /* special limits */
381 int max_count; 426 int max_count;
382 unsigned long max_age; 427 unsigned long max_age;
383 unsigned long min_age; 428 unsigned long min_age;
384 429
385 /* diff info for patches and for paths limiting */ 430 /* diff info for patches and for paths limiting */
386 struct diff_options diffopt; 431 struct diff_options diffopt;
387 struct diff_options pruning; 432 struct diff_options pruning;
388 433
389 topo_sort_set_fn_t topo_setter; 434 topo_sort_set_fn_t topo_setter;
390 topo_sort_get_fn_t topo_getter; 435 topo_sort_get_fn_t topo_getter;
391}; 436};
392 437
393 438
439extern void init_revisions(struct rev_info *revs, const char *prefix);
440extern int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def);
441extern int handle_revision_arg(const char *arg, struct rev_info *revs,int flags,int cant_be_filename);
442
443extern void prepare_revision_walk(struct rev_info *revs);
394extern struct commit *get_revision(struct rev_info *revs); 444extern struct commit *get_revision(struct rev_info *revs);
395 445
396 446
397 447
398 448
399#endif /* GIT_H */ 449#endif /* GIT_H */