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plugins: improve documentation of REGISTER_PLUGIN macro

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This commit is contained in:
Steffen Vogel 2018-07-02 10:51:01 +02:00
parent 832c2857d8
commit 7860c38bfe
1 changed files with 12 additions and 2 deletions
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14
include/villas/plugin.h
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@ -35,7 +35,17 @@
extern "C"{
#endif
/** @todo This is ugly as hell and broken on OS X / Clang anyway. */
/** (De-)Register a plugin by adding it to the global plugin list.
*
* We make use of GCC's / Clang's constructor/destructor function
* attributes to let the following code be executed by the loader.
* This works only when we compile libvillas as a shared library!
*
* The __attribute__((constructor)) / __attribute__((destructor))
* is currently only supported by GCC and Clang
*
* See: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#Common-Function-Attributes
*/
#define REGISTER_PLUGIN(p) \
__attribute__((constructor(110))) static void UNIQUE(__ctor)() {\
if (plugins.state == STATE_DESTROYED) \
@ -102,4 +112,4 @@ struct plugin * plugin_lookup(enum plugin_type type, const char *name);
#ifdef __cplusplus
}
#endif
#endif