1 // ANNA - Anna is Not 'N' Anymore
3 // (c) Copyright 2005-2014 Eduardo Ramos Testillano & Francisco Ruiz Rayo
5 // https://bitbucket.org/testillano/anna
7 // Redistribution and use in source and binary forms, with or without
8 // modification, are permitted provided that the following conditions
11 // * Redistributions of source code must retain the above copyright
12 // notice, this list of conditions and the following disclaimer.
13 // * Redistributions in binary form must reproduce the above
14 // copyright notice, this list of conditions and the following disclaimer
15 // in the documentation and/or other materials provided with the
17 // * Neither the name of Google Inc. nor the names of its
18 // contributors may be used to endorse or promote products derived from
19 // this software without specific prior written permission.
21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 // Authors: eduardo.ramos.testillano@gmail.com
34 // cisco.tierra@gmail.com
38 #include <anna/time/functions.hpp>
39 #include <anna/time/internal/TZ.hpp>
42 #include <stdlib.h> // getenv
47 #include <anna/core/functions.hpp>
53 unsigned long long int SecondsReference;
58 void anna::time::functions::initialize() throw() {
59 //throw(anna::RuntimeException) {
60 // If the system is configured properly, the default time zone will be correct. You might set TZ if you are
61 // using a computer over a network from a different time zone, and would like times reported to you in the
62 // time zone local to you, rather than what is local to the computer.
63 static bool cached = false;
66 // The getenv() function need not be reentrant. A function that is not required to be reentrant is not
67 // required to be thread-safe.
68 const char *local_tz = getenv("TZ");
69 shell_local_tz.set(local_tz);
70 // if (shell_local_tz.isUnset())
71 // std::cout << "'TZ' enviroment variable is not defined on shell (it shouldn't be necesary)" << std::endl;
78 void anna::time::functions::setControlPoint(unsigned long long int secondsTimestamp) throw() {
79 SecondsReference = secondsTimestamp ? secondsTimestamp : (::time(NULL));
82 unsigned long long int anna::time::functions::getSecondsReference() throw() {
83 return SecondsReference;
86 const anna::time::TZ & anna::time::functions::getLocalTz(void) throw() {
87 return (shell_local_tz);
90 bool anna::time::functions::initialized(void) throw() {
91 return (shell_local_tz.isInitialized());
94 unsigned long long int anna::time::functions::unixSeconds(void) throw() {
95 return (::time(NULL));
98 unsigned long long int anna::time::functions::unixMilliseconds() throw() {
100 gettimeofday(&tv, NULL);
101 return (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
104 unsigned long long int anna::time::functions::lapsedMilliseconds() throw() {
106 gettimeofday(&tv, NULL);
107 return ((tv.tv_sec - SecondsReference) * 1000) + (tv.tv_usec / 1000);
110 unsigned long long int anna::time::functions::unixMicroseconds(void) throw() {
112 gettimeofday(&tv, NULL);
113 unsigned long long int result(tv.tv_sec);
115 return result += tv.tv_usec;
118 std::string anna::time::functions::currentTimeAsString(void) throw() {
120 gettimeofday(&tv, NULL);
122 tm = localtime(&tv.tv_sec);
123 return (anna::functions::asString("%02d:%02d:%02d %d usecs", tm->tm_hour, tm->tm_min, tm->tm_sec, tv.tv_usec));