Hi,
On Tue, 2014-11-18 at 18:08 +0400, Tigran Bayburtsyan wrote:
> I need to execute PHP code in some thread of my application and continue
> excecution in another. Is is possible to somehow get all global PHP core
> hashtables from first thread and restore PHP from that point in another
> thread using that hashtables with all generated variables and functions ?
PHP works request base. Meaning the idea is to have isolated
shared-nothing requests.
PHP can run in two modes:
1. In a global environment, or
2. in a threaded environment
this is controlled by enabling or disabling ZTS - zend thread safety /
TSRM thread-safe resource manager. In the first case you have a global
state running one "request" at a time, theoretically this single request
context can be accessd by multiple threads while access has to be
guarded by some mutex.
In the second case you can have multiple requests which separate state.
Each of those is bound to a (posix|windows) thread sharing a context in
this mode between different threads can't be easily done and requires
patching (in non-public code I once created worker threads owning the
PHP request and different threads can signal there to bypass, but that's
a mess).
The probably most simple SAPI using different threads is my pconn SAPI:
https://github.com/johannes/pconn-sapi
Except for source we don't really have good documentation on all the
details. So please try to go through different SAPIs and try to
understand them. Specific questions are welcome on this list.
johannes
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