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Document that it is safe to call notify_fork() within a handler.

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This commit is contained in:
Christopher Kohlhoff 2011-02-28 09:36:41 +11:00
parent abec92780b
commit a75fc27d25
1 changed files with 8 additions and 5 deletions
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13
asio/include/asio/io_service.hpp
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@ -70,9 +70,9 @@ namespace detail { typedef task_io_service io_service_impl; }
* @e Shared @e objects: Safe, with the specific exceptions of the reset() and * @e Shared @e objects: Safe, with the specific exceptions of the reset() and
* notify_fork() functions. Calling reset() while there are unfinished run(), * notify_fork() functions. Calling reset() while there are unfinished run(),
* run_one(), poll() or poll_one() calls results in undefined behaviour. The * run_one(), poll() or poll_one() calls results in undefined behaviour. The
* notify_fork() function should not be called at the same time as any * notify_fork() function should not be called while any io_service function,
* io_service function, or any function on an I/O object that is associated * or any function on an I/O object that is associated with the io_service, is
* with the io_service. * being called in another thread.
* *
* @par Concepts: * @par Concepts:
* Dispatcher. * Dispatcher.
@ -517,8 +517,11 @@ public:
* it contains, to perform any necessary housekeeping to ensure correct * it contains, to perform any necessary housekeeping to ensure correct
* operation following a fork. * operation following a fork.
* *
* This function must not be called at the same time as any other io_service * This function must not be called while any other io_service function, or
* function, or any function on an I/O object associated with the io_service. * any function on an I/O object associated with the io_service, is being
* called in another thread. It is, however, safe to call this function from
* within a completion handler, provided no other thread is accessing the
* io_service.
* *
* @param event A fork-related event. * @param event A fork-related event.
* *