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https://github.com/git/git.git
synced 2024-11-25 10:54:00 +08:00
691f1a28bf
This helps to notice when something's going wrong, especially on systems which lock open files. I used the following criteria when selecting the code for replacement: - it was already printing a warning for the unlink failures - it is in a function which already printing something or is called from such a function - it is in a static function, returning void and the function is only called from a builtin main function (cmd_) - it is in a function which handles emergency exit (signal handlers) - it is in a function which is obvously cleaning up the lockfiles Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
#include "builtin.h"
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#include "cache.h"
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#include "dir.h"
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#include "string-list.h"
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#include "rerere.h"
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#include "xdiff/xdiff.h"
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#include "xdiff-interface.h"
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static const char git_rerere_usage[] =
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"git rerere [clear | status | diff | gc]";
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/* these values are days */
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static int cutoff_noresolve = 15;
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static int cutoff_resolve = 60;
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static time_t rerere_created_at(const char *name)
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{
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struct stat st;
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return stat(rerere_path(name, "preimage"), &st) ? (time_t) 0 : st.st_mtime;
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}
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static void unlink_rr_item(const char *name)
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{
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unlink(rerere_path(name, "thisimage"));
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unlink(rerere_path(name, "preimage"));
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unlink(rerere_path(name, "postimage"));
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rmdir(git_path("rr-cache/%s", name));
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}
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static int git_rerere_gc_config(const char *var, const char *value, void *cb)
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{
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if (!strcmp(var, "gc.rerereresolved"))
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cutoff_resolve = git_config_int(var, value);
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else if (!strcmp(var, "gc.rerereunresolved"))
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cutoff_noresolve = git_config_int(var, value);
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else
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return git_default_config(var, value, cb);
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return 0;
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}
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static void garbage_collect(struct string_list *rr)
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{
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struct string_list to_remove = { NULL, 0, 0, 1 };
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DIR *dir;
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struct dirent *e;
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int i, cutoff;
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time_t now = time(NULL), then;
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git_config(git_rerere_gc_config, NULL);
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dir = opendir(git_path("rr-cache"));
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while ((e = readdir(dir))) {
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if (is_dot_or_dotdot(e->d_name))
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continue;
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then = rerere_created_at(e->d_name);
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if (!then)
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continue;
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cutoff = (has_rerere_resolution(e->d_name)
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? cutoff_resolve : cutoff_noresolve);
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if (then < now - cutoff * 86400)
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string_list_append(e->d_name, &to_remove);
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}
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for (i = 0; i < to_remove.nr; i++)
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unlink_rr_item(to_remove.items[i].string);
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string_list_clear(&to_remove, 0);
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}
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static int outf(void *dummy, mmbuffer_t *ptr, int nbuf)
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{
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int i;
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for (i = 0; i < nbuf; i++)
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if (write_in_full(1, ptr[i].ptr, ptr[i].size) != ptr[i].size)
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return -1;
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return 0;
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}
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static int diff_two(const char *file1, const char *label1,
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const char *file2, const char *label2)
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{
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xpparam_t xpp;
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xdemitconf_t xecfg;
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xdemitcb_t ecb;
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mmfile_t minus, plus;
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if (read_mmfile(&minus, file1) || read_mmfile(&plus, file2))
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return 1;
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printf("--- a/%s\n+++ b/%s\n", label1, label2);
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fflush(stdout);
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memset(&xpp, 0, sizeof(xpp));
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xpp.flags = XDF_NEED_MINIMAL;
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memset(&xecfg, 0, sizeof(xecfg));
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xecfg.ctxlen = 3;
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ecb.outf = outf;
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xdi_diff(&minus, &plus, &xpp, &xecfg, &ecb);
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free(minus.ptr);
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free(plus.ptr);
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return 0;
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}
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int cmd_rerere(int argc, const char **argv, const char *prefix)
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{
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struct string_list merge_rr = { NULL, 0, 0, 1 };
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int i, fd;
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if (argc < 2)
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return rerere();
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fd = setup_rerere(&merge_rr);
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if (fd < 0)
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return 0;
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if (!strcmp(argv[1], "clear")) {
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for (i = 0; i < merge_rr.nr; i++) {
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const char *name = (const char *)merge_rr.items[i].util;
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if (!has_rerere_resolution(name))
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unlink_rr_item(name);
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}
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unlink_or_warn(git_path("rr-cache/MERGE_RR"));
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} else if (!strcmp(argv[1], "gc"))
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garbage_collect(&merge_rr);
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else if (!strcmp(argv[1], "status"))
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for (i = 0; i < merge_rr.nr; i++)
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printf("%s\n", merge_rr.items[i].string);
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else if (!strcmp(argv[1], "diff"))
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for (i = 0; i < merge_rr.nr; i++) {
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const char *path = merge_rr.items[i].string;
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const char *name = (const char *)merge_rr.items[i].util;
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diff_two(rerere_path(name, "preimage"), path, path, path);
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}
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else
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usage(git_rerere_usage);
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string_list_clear(&merge_rr, 1);
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return 0;
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}
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