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Commit | Line | Data |
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96a02f8f NP |
1 | #include "git-compat-util.h" |
2 | #include "progress.h" | |
3 | ||
4 | static volatile sig_atomic_t progress_update; | |
5 | ||
6 | static void progress_interval(int signum) | |
7 | { | |
8 | progress_update = 1; | |
9 | } | |
10 | ||
11 | static void set_progress_signal(void) | |
12 | { | |
13 | struct sigaction sa; | |
14 | struct itimerval v; | |
15 | ||
180a9f22 NP |
16 | progress_update = 0; |
17 | ||
96a02f8f NP |
18 | memset(&sa, 0, sizeof(sa)); |
19 | sa.sa_handler = progress_interval; | |
20 | sigemptyset(&sa.sa_mask); | |
21 | sa.sa_flags = SA_RESTART; | |
22 | sigaction(SIGALRM, &sa, NULL); | |
23 | ||
24 | v.it_interval.tv_sec = 1; | |
25 | v.it_interval.tv_usec = 0; | |
26 | v.it_value = v.it_interval; | |
27 | setitimer(ITIMER_REAL, &v, NULL); | |
28 | } | |
29 | ||
30 | static void clear_progress_signal(void) | |
31 | { | |
32 | struct itimerval v = {{0,},}; | |
33 | setitimer(ITIMER_REAL, &v, NULL); | |
34 | signal(SIGALRM, SIG_IGN); | |
35 | progress_update = 0; | |
36 | } | |
37 | ||
38 | int display_progress(struct progress *progress, unsigned n) | |
39 | { | |
180a9f22 NP |
40 | if (progress->delay) { |
41 | char buf[80]; | |
42 | if (!progress_update || --progress->delay) | |
43 | return 0; | |
44 | if (progress->total) { | |
45 | unsigned percent = n * 100 / progress->total; | |
46 | if (percent > progress->delayed_percent_treshold) { | |
47 | /* inhibit this progress report entirely */ | |
48 | clear_progress_signal(); | |
49 | progress->delay = -1; | |
50 | progress->total = 0; | |
51 | return 0; | |
52 | } | |
53 | } | |
54 | if (snprintf(buf, sizeof(buf), | |
55 | progress->delayed_title, progress->total)) | |
56 | fprintf(stderr, "%s\n", buf); | |
57 | } | |
96a02f8f NP |
58 | if (progress->total) { |
59 | unsigned percent = n * 100 / progress->total; | |
60 | if (percent != progress->last_percent || progress_update) { | |
61 | progress->last_percent = percent; | |
62 | fprintf(stderr, "%s%4u%% (%u/%u) done\r", | |
13aaf148 | 63 | progress->prefix, percent, n, progress->total); |
96a02f8f NP |
64 | progress_update = 0; |
65 | return 1; | |
66 | } | |
67 | } else if (progress_update) { | |
13aaf148 | 68 | fprintf(stderr, "%s%u\r", progress->prefix, n); |
96a02f8f NP |
69 | progress_update = 0; |
70 | return 1; | |
71 | } | |
72 | return 0; | |
73 | } | |
74 | ||
13aaf148 NP |
75 | void start_progress(struct progress *progress, const char *title, |
76 | const char *prefix, unsigned total) | |
96a02f8f | 77 | { |
13aaf148 NP |
78 | char buf[80]; |
79 | progress->prefix = prefix; | |
96a02f8f NP |
80 | progress->total = total; |
81 | progress->last_percent = -1; | |
180a9f22 | 82 | progress->delay = 0; |
13aaf148 NP |
83 | if (snprintf(buf, sizeof(buf), title, total)) |
84 | fprintf(stderr, "%s\n", buf); | |
96a02f8f NP |
85 | set_progress_signal(); |
86 | } | |
87 | ||
180a9f22 NP |
88 | void start_progress_delay(struct progress *progress, const char *title, |
89 | const char *prefix, unsigned total, | |
90 | unsigned percent_treshold, unsigned delay) | |
91 | { | |
92 | progress->prefix = prefix; | |
93 | progress->total = total; | |
94 | progress->last_percent = -1; | |
95 | progress->delayed_percent_treshold = percent_treshold; | |
96 | progress->delayed_title = title; | |
97 | progress->delay = delay; | |
98 | set_progress_signal(); | |
99 | } | |
100 | ||
96a02f8f NP |
101 | void stop_progress(struct progress *progress) |
102 | { | |
103 | clear_progress_signal(); | |
104 | if (progress->total) | |
105 | fputc('\n', stderr); | |
106 | } |