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Date: Fri, 27 Jun 2014 07:57:57 +0200
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References: <A4851D00-E21D-4A74-8A84-C77B4DE09FAD@googlemail.com> <1403777679.12695.14.camel@guybrush>
To: =?windows-1252?Q?Johannes_Schl=FCter?= <johannes@schlueters.de>
Subject: Re: [PHP-DEV] Embedding PHP, few additional questions.
From: ingwie2000@googlemail.com (Ingwie Phoenix)


Am 26.06.2014 um 12:14 schrieb Johannes Schl=FCter =
<johannes@schlueters.de>:

> Hi,
>=20
>=20
> On Thu, 2014-06-26 at 11:50 +0200, Ingwie Phoenix wrote:
>> I am working on a nodejs module that allows to embed PHP (to use it
>> within HTTP servers, for example). I wish to extend with a small
>> thing. Instead of starting, running and shutting down the engine, I
>> would like to keep it running, and just reset its state. Why? I
>> *think* that this would keep my OPCache. Sadly, I did not find any
>> documentation on how OPCache saved its=85cache. Its just ment as a
>> matter of speed improvement.
>>=20
>> How can I just reset the engine, without shutting it down?
>=20
> I don't now what you mean by "reset" PHP is meant to serve requests, =
one
> after another, where each request has its own context. Probably =
youwant
> to run request cycles?
>=20
>> The embedding instructions that I will use are here:
>> http://phi.lv/?p=3D376
>=20
> This sees to use the high level embed APIs. Use
> php_request_startup(TSRMLS_C); ... php_request_shutdown((void *) 0);
> style loops. See embed API implementation, and a simple SAPI like
> =
https://github.com/johannes/pconn-sapi/blob/master/pconnect-sapi.c#L180
>=20
> johannes

Hey.

So I just looked into the pconn source and SAPI that you linked. Its =
basically easy, if there wasnt the rather confusing tsrm bits here and =
there. But I think I would just copy them=85

I also did some research, and learned that OPCaches are stored in shared =
memory. Wouldn=92t shared memory get lost when the interpreter is shut =
down, or how is this working? Is shared memory actually =84fully =
associated=93 to a program? Excuse me for the dumb question, It is just =
my first direct confrontation with shared memory, ever.

In your pconn SAPI, you are telling PHP that you are not going to use =
headers=85 but, in my case, I have an incomming HTTP request and should =
very much forward those headers. What is the function that I must look =
at, to copy my headers?

As this is going to be a nodejs module (v8php), I will link most of =
these functions into JS scope by supplying wrappers and the like. Going =
to be pretty interesting to see this in actual work, and comparign the =
speed to just using child_process.spawn.

Kind regards, Ingwie.=