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media/webrtc/signaling/src/common/time_profiling/timecard.c@ac0c01689b40 (annotated)

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.

michael@0	1	/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* vim: set ts=8 sts=2 et sw=2 tw=80: */
michael@0	3	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	6
michael@0	7	#include <stdio.h>
michael@0	8	#include "timecard.h"
michael@0	9	#include "mozilla/mozalloc.h"
michael@0	10
michael@0	11	Timecard *
michael@0	12	create_timecard()
michael@0	13	{
michael@0	14	Timecard *tc = moz_xcalloc(1,sizeof(Timecard));
michael@0	15	tc->entries_allocated = TIMECARD_INITIAL_TABLE_SIZE;
michael@0	16	tc->entries = moz_xcalloc(tc->entries_allocated, sizeof(TimecardEntry));
michael@0	17	tc->start_time = PR_Now();
michael@0	18	return tc;
michael@0	19	}
michael@0	20
michael@0	21	void
michael@0	22	destroy_timecard(Timecard *tc)
michael@0	23	{
michael@0	24	moz_free(tc->entries);
michael@0	25	moz_free(tc);
michael@0	26	}
michael@0	27
michael@0	28	void
michael@0	29	stamp_timecard(Timecard *tc,
michael@0	30	const char *event,
michael@0	31	const char *file,
michael@0	32	unsigned int line,
michael@0	33	const char *function)
michael@0	34	{
michael@0	35	TimecardEntry *entry = NULL;
michael@0	36
michael@0	37	/* Trim the path component from the filename */
michael@0	38	const char *last_slash = file;
michael@0	39	while (*file) {
michael@0	40	if (*file == '/' || *file == '\\') {
michael@0	41	last_slash = file;
michael@0	42	}
michael@0	43	file++;
michael@0	44	}
michael@0	45	file = last_slash;
michael@0	46	if (*file == '/' || *file == '\\') {
michael@0	47	file++;
michael@0	48	}
michael@0	49
michael@0	50	/* Ensure there is enough space left in the entries list */
michael@0	51	if (tc->curr_entry == tc->entries_allocated) {
michael@0	52	tc->entries_allocated *= 2;
michael@0	53	tc->entries = moz_xrealloc(tc->entries,
michael@0	54	tc->entries_allocated * sizeof(TimecardEntry));
michael@0	55	}
michael@0	56
michael@0	57	/* Record the data into the timecard entry */
michael@0	58	entry = &tc->entries[tc->curr_entry];
michael@0	59	entry->timestamp = PR_Now();
michael@0	60	entry->event = event;
michael@0	61	entry->file = file;
michael@0	62	entry->line = line;
michael@0	63	entry->function = function;
michael@0	64	tc->curr_entry++;
michael@0	65	}
michael@0	66
michael@0	67	void
michael@0	68	print_timecard(Timecard *tc)
michael@0	69	{
michael@0	70	size_t i;
michael@0	71	TimecardEntry *entry;
michael@0	72	size_t event_width = 5;
michael@0	73	size_t file_width = 4;
michael@0	74	size_t function_width = 8;
michael@0	75	size_t line_width;
michael@0	76	PRTime offset, delta;
michael@0	77
michael@0	78	for (i = 0; i < tc->curr_entry; i++) {
michael@0	79	entry = &tc->entries[i];
michael@0	80	if (strlen(entry->event) > event_width) {
michael@0	81	event_width = strlen(entry->event);
michael@0	82	}
michael@0	83	if (strlen(entry->file) > file_width) {
michael@0	84	file_width = strlen(entry->file);
michael@0	85	}
michael@0	86	if (strlen(entry->function) > function_width) {
michael@0	87	function_width = strlen(entry->function);
michael@0	88	}
michael@0	89	}
michael@0	90
michael@0	91	printf("\nTimecard created %4lld.%6.6lld\n\n",
michael@0	92	tc->start_time / PR_USEC_PER_SEC, tc->start_time % PR_USEC_PER_SEC);
michael@0	93
michael@0	94	line_width = 1 + 11 + 11 + event_width + file_width + 6 +
michael@0	95	function_width + (4 * 3);
michael@0	96
michael@0	97	printf(" %-11s | %-11s | %-*s | %-*s | %-*s\n",
michael@0	98	"Timestamp", "Delta",
michael@0	99	(int)event_width, "Event",
michael@0	100	(int)file_width + 6, "File",
michael@0	101	(int)function_width, "Function");
michael@0	102
michael@0	103	for (i = 0; i <= line_width; i++) {
michael@0	104	printf("=");
michael@0	105	}
michael@0	106	printf("\n");
michael@0	107
michael@0	108	for (i = 0; i < tc->curr_entry; i++) {
michael@0	109	entry = &tc->entries[i];
michael@0	110	offset = entry->timestamp - tc->start_time;
michael@0	111	if (i > 0) {
michael@0	112	delta = entry->timestamp - tc->entries[i-1].timestamp;
michael@0	113	} else {
michael@0	114	delta = entry->timestamp - tc->start_time;
michael@0	115	}
michael@0	116	printf(" %4lld.%6.6lld | %4lld.%6.6lld | %-*s | %*s:%-5d | %-*s\n",
michael@0	117	offset / PR_USEC_PER_SEC, offset % PR_USEC_PER_SEC,
michael@0	118	delta / PR_USEC_PER_SEC, delta % PR_USEC_PER_SEC,
michael@0	119	(int)event_width, entry->event,
michael@0	120	(int)file_width, entry->file, entry->line,
michael@0	121	(int)function_width, entry->function);
michael@0	122	}
michael@0	123	printf("\n");
michael@0	124	}