media/webrtc/signaling/src/common/time_profiling/timecard.c@ac0c01689b40
media/webrtc/signaling/src/common/time_profiling/timecard.c
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #include <stdio.h>
8 #include "timecard.h"
9 #include "mozilla/mozalloc.h"
11 Timecard *
12 create_timecard()
13 {
14 Timecard *tc = moz_xcalloc(1,sizeof(Timecard));
15 tc->entries_allocated = TIMECARD_INITIAL_TABLE_SIZE;
16 tc->entries = moz_xcalloc(tc->entries_allocated, sizeof(TimecardEntry));
17 tc->start_time = PR_Now();
18 return tc;
19 }
21 void
22 destroy_timecard(Timecard *tc)
23 {
24 moz_free(tc->entries);
25 moz_free(tc);
26 }
28 void
29 stamp_timecard(Timecard *tc,
30 const char *event,
31 const char *file,
32 unsigned int line,
33 const char *function)
34 {
35 TimecardEntry *entry = NULL;
37 /* Trim the path component from the filename */
38 const char *last_slash = file;
39 while (*file) {
40 if (*file == '/' || *file == '\\') {
41 last_slash = file;
42 }
43 file++;
44 }
45 file = last_slash;
46 if (*file == '/' || *file == '\\') {
47 file++;
48 }
50 /* Ensure there is enough space left in the entries list */
51 if (tc->curr_entry == tc->entries_allocated) {
52 tc->entries_allocated *= 2;
53 tc->entries = moz_xrealloc(tc->entries,
54 tc->entries_allocated * sizeof(TimecardEntry));
55 }
57 /* Record the data into the timecard entry */
58 entry = &tc->entries[tc->curr_entry];
59 entry->timestamp = PR_Now();
60 entry->event = event;
61 entry->file = file;
62 entry->line = line;
63 entry->function = function;
64 tc->curr_entry++;
65 }
67 void
68 print_timecard(Timecard *tc)
69 {
70 size_t i;
71 TimecardEntry *entry;
72 size_t event_width = 5;
73 size_t file_width = 4;
74 size_t function_width = 8;
75 size_t line_width;
76 PRTime offset, delta;
78 for (i = 0; i < tc->curr_entry; i++) {
79 entry = &tc->entries[i];
80 if (strlen(entry->event) > event_width) {
81 event_width = strlen(entry->event);
82 }
83 if (strlen(entry->file) > file_width) {
84 file_width = strlen(entry->file);
85 }
86 if (strlen(entry->function) > function_width) {
87 function_width = strlen(entry->function);
88 }
89 }
91 printf("\nTimecard created %4lld.%6.6lld\n\n",
92 tc->start_time / PR_USEC_PER_SEC, tc->start_time % PR_USEC_PER_SEC);
94 line_width = 1 + 11 + 11 + event_width + file_width + 6 +
95 function_width + (4 * 3);
97 printf(" %-11s | %-11s | %-*s | %-*s | %-*s\n",
98 "Timestamp", "Delta",
99 (int)event_width, "Event",
100 (int)file_width + 6, "File",
101 (int)function_width, "Function");
103 for (i = 0; i <= line_width; i++) {
104 printf("=");
105 }
106 printf("\n");
108 for (i = 0; i < tc->curr_entry; i++) {
109 entry = &tc->entries[i];
110 offset = entry->timestamp - tc->start_time;
111 if (i > 0) {
112 delta = entry->timestamp - tc->entries[i-1].timestamp;
113 } else {
114 delta = entry->timestamp - tc->start_time;
115 }
116 printf(" %4lld.%6.6lld | %4lld.%6.6lld | %-*s | %*s:%-5d | %-*s\n",
117 offset / PR_USEC_PER_SEC, offset % PR_USEC_PER_SEC,
118 delta / PR_USEC_PER_SEC, delta % PR_USEC_PER_SEC,
119 (int)event_width, entry->event,
120 (int)file_width, entry->file, entry->line,
121 (int)function_width, entry->function);
122 }
123 printf("\n");
124 }
