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From: Derrick Stolee <stolee@gmail.com>
To: "Đoàn Trần Công Danh" <congdanhqx@gmail.com>,
	"Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org, sandals@crustytoothpaste.net,
	steadmon@google.com, jrnieder@gmail.com, peff@peff.net,
	phillip.wood123@gmail.com, emilyshaffer@google.com,
	sluongng@gmail.com, jonathantanmy@google.com,
	Derrick Stolee <derrickstolee@github.com>,
	Derrick Stolee <dstolee@microsoft.com>
Subject: Re: [PATCH 3/7] maintenance: add --scheduled option and config
Date: Mon, 24 Aug 2020 10:03:51 -0400	[thread overview]
Message-ID: <83b90c15-6d19-3d6e-cefe-4d271aaaac3a@gmail.com> (raw)
In-Reply-To: <20200820145127.GC31084@danh.dev>

On 8/20/2020 10:51 AM, Đoàn Trần Công Danh wrote:
> On 2020-08-19 17:16:44+0000, Derrick Stolee via GitGitGadget <gitgitgadget@gmail.com> wrote:
>> +static void fill_schedule_info(struct maintenance_task *task,
>> +			       const char *config_name,
>> +			       timestamp_t schedule_delay)
>> +{
>> +	timestamp_t now = approxidate("now");
> 
> I see this pattern in both previous patch and this patch,
> should we create a helper (if not exist) to get current timestamp
> instead, parsing "now" every now and then is not a good idea, in my
> very opinionated opinion.

Parsing "now" is not that much work, and it is done only once per
maintenance task. To make a helper that avoids these string comparisons
(specifically to avoid iterating through the "special" array in date.c)
is unlikely to be worth the effort and code duplication.

If you mean it would be good to use a macro here, then that would be
easy:

	#define approxidate_now() approxidate("now")

One important thing for using this over time(NULL) is that we really
want this to work with GIT_TEST_DATE_NOW.

>> +	char *value = NULL;
>> +	struct strbuf last_run = STRBUF_INIT;
>> +	int64_t previous_run;
>> +
>> +	strbuf_addf(&last_run, "maintenance.%s.lastrun", task->name);
>> +
>> +	if (git_config_get_string(last_run.buf, &value))
>> +		task->scheduled = 1;
>> +	else {
>> +		previous_run = git_config_int64(last_run.buf, value);
>> +		if (now >= previous_run + schedule_delay)
>> +			task->scheduled = 1;
>> +	}
>> +
>> +	free(value);
>> +	strbuf_release(&last_run);
>> +}
>> +
>>  static void initialize_task_config(void)
>>  {
>>  	int i;
>> @@ -1359,6 +1387,7 @@ static void initialize_task_config(void)
>>  
>>  	for (i = 0; i < TASK__COUNT; i++) {
>>  		int config_value;
>> +		char *config_str;
>>  
>>  		strbuf_setlen(&config_name, 0);
>>  		strbuf_addf(&config_name, "maintenance.%s.enabled",
>> @@ -1366,6 +1395,20 @@ static void initialize_task_config(void)
>>  
>>  		if (!git_config_get_bool(config_name.buf, &config_value))
>>  			tasks[i].enabled = config_value;
>> +
>> +		strbuf_setlen(&config_name, 0);
> 
> It looks like we have a simple and better named alias for this:
> 
> 	strbuf_reset(&config_name)
> 
> _reset has 400+ occurences in this code base, compare to 20 of _setlen

Makes sense. Thanks.

-Stolee


  reply	other threads:[~2020-08-24 14:04 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-19 17:16 [PATCH 0/7] [RFC] Maintenance III: background maintenance Derrick Stolee via GitGitGadget
2020-08-19 17:16 ` [PATCH 1/7] maintenance: optionally skip --auto process Derrick Stolee via GitGitGadget
2020-08-20  2:06   ` Đoàn Trần Công Danh
2020-08-20 12:12     ` Derrick Stolee
2020-08-19 17:16 ` [PATCH 3/7] maintenance: add --scheduled option and config Derrick Stolee via GitGitGadget
2020-08-20 14:51   ` Đoàn Trần Công Danh
2020-08-24 14:03     ` Derrick Stolee [this message]
2020-08-19 17:16 ` [PATCH 4/7] for-each-repo: run subcommands on configured repos Derrick Stolee via GitGitGadget
2020-08-20 15:00   ` Đoàn Trần Công Danh
2020-08-19 17:16 ` [PATCH 5/7] maintenance: add [un]register subcommands Derrick Stolee via GitGitGadget
2020-08-19 17:16 ` [PATCH 6/7] maintenance: add start/stop subcommands Derrick Stolee via GitGitGadget
2020-08-19 17:16 ` [PATCH 7/7] maintenance: recommended schedule in register/start Derrick Stolee via GitGitGadget
     [not found] ` <bdc27fa28ee70222ed3c7c9863746ace8ea835e4.1597857409.git.gitgitgadget@gmail.com>
2020-08-20 14:34   ` [PATCH 2/7] maintenance: store the "last run" time in config Đoàn Trần Công Danh
2020-08-25 18:39 ` [PATCH v2 0/7] [RFC] Maintenance III: background maintenance Derrick Stolee via GitGitGadget
2020-08-25 18:39   ` [PATCH v2 1/7] maintenance: optionally skip --auto process Derrick Stolee via GitGitGadget
2020-08-25 21:44     ` Junio C Hamano
2020-08-26 12:29       ` Derrick Stolee
2020-08-26 16:57         ` Junio C Hamano
2020-08-25 18:39   ` [PATCH v2 2/7] maintenance: store the "last run" time in config Derrick Stolee via GitGitGadget
2020-08-25 21:52     ` Junio C Hamano
2020-08-26 13:34       ` Derrick Stolee
2020-08-26 17:03         ` Junio C Hamano
2020-08-27 13:02           ` Derrick Stolee
2020-08-25 18:40   ` [PATCH v2 3/7] maintenance: add --scheduled option and config Derrick Stolee via GitGitGadget
2020-08-25 22:01     ` Junio C Hamano
2020-08-26 15:30       ` Derrick Stolee
2020-08-27 15:47         ` Derrick Stolee
2020-08-25 18:40   ` [PATCH v2 4/7] for-each-repo: run subcommands on configured repos Derrick Stolee via GitGitGadget
2020-08-25 22:19     ` Junio C Hamano
2020-08-26 16:03       ` Derrick Stolee
2020-08-25 18:40   ` [PATCH v2 5/7] maintenance: add [un]register subcommands Derrick Stolee via GitGitGadget
2020-08-25 18:40   ` [PATCH v2 6/7] maintenance: add start/stop subcommands Derrick Stolee via GitGitGadget
2020-08-25 18:40   ` [PATCH v2 7/7] maintenance: recommended schedule in register/start Derrick Stolee via GitGitGadget
2020-08-28 15:45   ` [PATCH v3 0/6] [RFC] Maintenance III: background maintenance Derrick Stolee via GitGitGadget
2020-08-28 15:45     ` [PATCH v3 1/6] maintenance: optionally skip --auto process Derrick Stolee via GitGitGadget
2020-08-28 15:45     ` [PATCH v3 2/6] maintenance: add --schedule option and config Derrick Stolee via GitGitGadget
2020-08-28 15:45     ` [PATCH v3 3/6] for-each-repo: run subcommands on configured repos Derrick Stolee via GitGitGadget
2020-08-28 15:45     ` [PATCH v3 4/6] maintenance: add [un]register subcommands Derrick Stolee via GitGitGadget
2020-08-28 15:45     ` [PATCH v3 5/6] maintenance: add start/stop subcommands Derrick Stolee via GitGitGadget
2020-08-28 15:45     ` [PATCH v3 6/6] maintenance: recommended schedule in register/start Derrick Stolee via GitGitGadget
2020-08-26 12:42 ` [PATCH 0/7] [RFC] Maintenance III: background maintenance Michal Suchánek

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