rfc:native-tls
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| rfc:native-tls [2014/11/20 15:01] – ab | rfc:native-tls [2017/09/22 13:28] (current) – external edit 127.0.0.1 | ||
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| * Date: 2014-11-19 | * Date: 2014-11-19 | ||
| * Author: Anatol Belski, ab@php.net | * Author: Anatol Belski, ab@php.net | ||
| - | * Status: | + | * Status: Accepted |
| - | /* * First Published at: http:// | + | |
| ===== Introduction ===== | ===== Introduction ===== | ||
| Line 30: | Line 29: | ||
| - all the TSRMLS_* macros was made placebo | - all the TSRMLS_* macros was made placebo | ||
| - | - TSRMG macro which is used to access the globals now can has two variants | + | - TSRMG macro which is used to access the globals now can have two variants |
| - using the tsrm_tls_cache() function which fetches the thread specific globals using the underlaying platform API (for example pthreads on linux or windows specific on windows) | - using the tsrm_tls_cache() function which fetches the thread specific globals using the underlaying platform API (for example pthreads on linux or windows specific on windows) | ||
| - using a previously defined pointer which is global within a binary unit and is updated per thread | - using a previously defined pointer which is global within a binary unit and is updated per thread | ||
| - core was ported to use the static per binary unit cache (the second variant above), the enablement was done step by step | - core was ported to use the static per binary unit cache (the second variant above), the enablement was done step by step | ||
| - | As also described in the base RFC, the main difficulty to make this process cross platform is that it is not every compiler (for instance Visual Studio) support sharing a thread specific variable between shared objects. For that reason, the function call to tsrm_get_ls_cache() is needed at least once per thread in order to work with the thread specific resources. Such an operation is needed to be done within every binary unit. | + | As also described in the base RFC, the main difficulty to make this process cross platform is that not every compiler (for instance Visual Studio) support sharing a thread specific variable between shared objects. For that reason, the function call to tsrm_get_ls_cache() is needed at least once per thread in order to work with the thread specific resources. Such an operation is needed to be done within every binary unit. |
| - | In the patch, almost any macros accessing globals, like EG, CG, etc. are ported to use a local TSRMLS pointer which is static to that binary unit (i.e. shared extension or SAPI bin/ | + | In the patch, almost any macros accessing globals, like EG, CG, etc. are ported to use a local TSRMLS pointer which is static to that binary unit (i.e. shared extension or SAPI bin/ |
| - defining a tsrmls cache holder for a binary unit (ZEND_TSRMLS_CACHE_DEFINE macro) | - defining a tsrmls cache holder for a binary unit (ZEND_TSRMLS_CACHE_DEFINE macro) | ||
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| ==== To Existing Extensions ==== | ==== To Existing Extensions ==== | ||
| See implementation details. | See implementation details. | ||
| + | |||
| + | ==== To operating systems ==== | ||
| + | A potential incompatibility to not widely used operating systems can be introduced. Any Unix (like) OS using pthreads or other threads implementation supported by the TSRM layer, or any x86/x64 Windows system, are supported. That covers good 99% of the target OSes (please read the base RFC for more details). | ||
| ===== Open Issues ===== | ===== Open Issues ===== | ||
| Line 67: | Line 69: | ||
| * depending on compiler evolution, fetching thread id per function could be replaced with a real global variable shared across all the binary units (.so, .dll, .exe) | * depending on compiler evolution, fetching thread id per function could be replaced with a real global variable shared across all the binary units (.so, .dll, .exe) | ||
| - | ===== Proposed Voting Choices | + | ===== Vote ===== |
| - | yes, no | + | <doodle title=" |
| - | + | * Yes | |
| - | 50%+1 majority required | + | * No |
| + | </ | ||
| + | \\ | ||
| + | The vote starts on 12/10/2014 at 21:00 CET and ends on 12/17/2014 at 21:00 CET. 50%+1 majority required. | ||
| ===== Patches and Tests ===== | ===== Patches and Tests ===== | ||
rfc/native-tls.1416495672.txt.gz · Last modified: 2017/09/22 13:28 (external edit)