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@ -28,8 +28,8 @@ libev - a high performance full-featured event loop written in C |
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// with its corresponding stop function. |
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ev_io_stop (EV_A_ w); |
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// this causes all nested ev_loop's to stop iterating |
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ev_unloop (EV_A_ EVUNLOOP_ALL); |
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// this causes all nested ev_run's to stop iterating |
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ev_break (EV_A_ EVBREAK_ALL); |
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} |
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// another callback, this time for a time-out |
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@ -37,8 +37,8 @@ libev - a high performance full-featured event loop written in C |
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timeout_cb (EV_P_ ev_timer *w, int revents) |
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{ |
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puts ("timeout"); |
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// this causes the innermost ev_loop to stop iterating |
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ev_unloop (EV_A_ EVUNLOOP_ONE); |
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// this causes the innermost ev_run to stop iterating |
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ev_break (EV_A_ EVBREAK_ONE); |
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} |
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int |
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@ -58,7 +58,7 @@ libev - a high performance full-featured event loop written in C |
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ev_timer_start (loop, &timeout_watcher); |
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// now wait for events to arrive |
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ev_loop (loop, 0); |
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ev_run (loop, 0); |
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// unloop was called, so exit |
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return 0; |
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@ -294,13 +294,13 @@ Example: This is basically the same thing that libev does internally, too. |
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=head1 FUNCTIONS CONTROLLING THE EVENT LOOP |
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An event loop is described by a C<struct ev_loop *> (the C<struct> |
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is I<not> optional in this case, as there is also an C<ev_loop> |
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I<function>). |
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An event loop is described by a C<struct ev_loop *> (the C<struct> is |
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I<not> optional in case unless libev 3 compatibility is disabled, as libev |
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3 had an C<ev_loop> function colliding with the struct name). |
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The library knows two types of such loops, the I<default> loop, which |
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supports signals and child events, and dynamically created loops which do |
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not. |
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supports signals and child events, and dynamically created event loops |
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which do not. |
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=over 4 |
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@ -608,12 +608,12 @@ earlier call to C<ev_loop_new>. |
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=item ev_default_fork () |
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This function sets a flag that causes subsequent C<ev_loop> iterations |
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This function sets a flag that causes subsequent C<ev_run> iterations |
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to reinitialise the kernel state for backends that have one. Despite the |
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name, you can call it anytime, but it makes most sense after forking, in |
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the child process (or both child and parent, but that again makes little |
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sense). You I<must> call it in the child before using any of the libev |
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functions, and it will only take effect at the next C<ev_loop> iteration. |
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functions, and it will only take effect at the next C<ev_run> iteration. |
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Again, you I<have> to call it on I<any> loop that you want to re-use after |
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a fork, I<even if you do not plan to use the loop in the parent>. This is |
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@ -621,9 +621,11 @@ because some kernel interfaces *cough* I<kqueue> *cough* do funny things |
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during fork. |
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On the other hand, you only need to call this function in the child |
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process if and only if you want to use the event loop in the child. If you |
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just fork+exec or create a new loop in the child, you don't have to call |
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it at all. |
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process if and only if you want to use the event loop in the child. If |
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you just fork+exec or create a new loop in the child, you don't have to |
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call it at all (in fact, C<epoll> is so badly broken that it makes a |
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difference, but libev will usually detect this case on its own and do a |
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costly reset of the backend). |
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The function itself is quite fast and it's usually not a problem to call |
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it just in case after a fork. To make this easy, the function will fit in |
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@ -645,9 +647,9 @@ otherwise. |
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=item unsigned int ev_iteration (loop) |
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Returns the current iteration count for the loop, which is identical to |
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the number of times libev did poll for new events. It starts at C<0> and |
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happily wraps around with enough iterations. |
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Returns the current iteration count for the event loop, which is identical |
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to the number of times libev did poll for new events. It starts at C<0> |
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and happily wraps around with enough iterations. |
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This value can sometimes be useful as a generation counter of sorts (it |
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"ticks" the number of loop iterations), as it roughly corresponds with |
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@ -656,16 +658,16 @@ prepare and check phases. |
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=item unsigned int ev_depth (loop) |
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Returns the number of times C<ev_loop> was entered minus the number of |
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times C<ev_loop> was exited, in other words, the recursion depth. |
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Returns the number of times C<ev_run> was entered minus the number of |
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times C<ev_run> was exited, in other words, the recursion depth. |
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Outside C<ev_loop>, this number is zero. In a callback, this number is |
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C<1>, unless C<ev_loop> was invoked recursively (or from another thread), |
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Outside C<ev_run>, this number is zero. In a callback, this number is |
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C<1>, unless C<ev_run> was invoked recursively (or from another thread), |
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in which case it is higher. |
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Leaving C<ev_loop> abnormally (setjmp/longjmp, cancelling the thread |
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Leaving C<ev_run> abnormally (setjmp/longjmp, cancelling the thread |
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etc.), doesn't count as "exit" - consider this as a hint to avoid such |
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ungentleman behaviour unless it's really convenient. |
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ungentleman-like behaviour unless it's really convenient. |
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=item unsigned int ev_backend (loop) |
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@ -684,7 +686,7 @@ event occurring (or more correctly, libev finding out about it). |
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Establishes the current time by querying the kernel, updating the time |
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returned by C<ev_now ()> in the progress. This is a costly operation and |
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is usually done automatically within C<ev_loop ()>. |
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is usually done automatically within C<ev_run ()>. |
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This function is rarely useful, but when some event callback runs for a |
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very long time without entering the event loop, updating libev's idea of |
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@ -696,8 +698,8 @@ See also L<The special problem of time updates> in the C<ev_timer> section. |
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=item ev_resume (loop) |
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These two functions suspend and resume a loop, for use when the loop is |
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not used for a while and timeouts should not be processed. |
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These two functions suspend and resume an event loop, for use when the |
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loop is not used for a while and timeouts should not be processed. |
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A typical use case would be an interactive program such as a game: When |
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the user presses C<^Z> to suspend the game and resumes it an hour later it |
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@ -718,28 +720,32 @@ without a previous call to C<ev_suspend>. |
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Calling C<ev_suspend>/C<ev_resume> has the side effect of updating the |
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event loop time (see C<ev_now_update>). |
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=item ev_loop (loop, int flags) |
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=item ev_run (loop, int flags) |
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Finally, this is it, the event handler. This function usually is called |
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after you have initialised all your watchers and you want to start |
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handling events. |
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handling events. It will ask the operating system for any new events, call |
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the watcher callbacks, an then repeat the whole process indefinitely: This |
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is why event loops are called I<loops>. |
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If the flags argument is specified as C<0>, it will not return until |
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either no event watchers are active anymore or C<ev_unloop> was called. |
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If the flags argument is specified as C<0>, it will keep handling events |
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until either no event watchers are active anymore or C<ev_break> was |
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called. |
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Please note that an explicit C<ev_unloop> is usually better than |
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Please note that an explicit C<ev_break> is usually better than |
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relying on all watchers to be stopped when deciding when a program has |
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finished (especially in interactive programs), but having a program |
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that automatically loops as long as it has to and no longer by virtue |
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of relying on its watchers stopping correctly, that is truly a thing of |
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beauty. |
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A flags value of C<EVLOOP_NONBLOCK> will look for new events, will handle |
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those events and any already outstanding ones, but will not block your |
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process in case there are no events and will return after one iteration of |
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the loop. |
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A flags value of C<EVRUN_NOWAIT> will look for new events, will handle |
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those events and any already outstanding ones, but will not wait and |
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block your process in case there are no events and will return after one |
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iteration of the loop. This is sometimes useful to poll and handle new |
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events while doing lengthy calculations, to keep the program responsive. |
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A flags value of C<EVLOOP_ONESHOT> will look for new events (waiting if |
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A flags value of C<EVRUN_ONCE> will look for new events (waiting if |
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necessary) and will handle those and any already outstanding ones. It |
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will block your process until at least one new event arrives (which could |
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be an event internal to libev itself, so there is no guarantee that a |
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@ -748,55 +754,64 @@ iteration of the loop. |
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This is useful if you are waiting for some external event in conjunction |
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with something not expressible using other libev watchers (i.e. "roll your |
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own C<ev_loop>"). However, a pair of C<ev_prepare>/C<ev_check> watchers is |
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own C<ev_run>"). However, a pair of C<ev_prepare>/C<ev_check> watchers is |
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usually a better approach for this kind of thing. |
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Here are the gory details of what C<ev_loop> does: |
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Here are the gory details of what C<ev_run> does: |
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- Increment loop depth. |
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- Reset the ev_break status. |
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- Before the first iteration, call any pending watchers. |
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* If EVFLAG_FORKCHECK was used, check for a fork. |
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LOOP: |
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- If EVFLAG_FORKCHECK was used, check for a fork. |
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- If a fork was detected (by any means), queue and call all fork watchers. |
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- Queue and call all prepare watchers. |
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- If ev_break was called, goto FINISH. |
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- If we have been forked, detach and recreate the kernel state |
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as to not disturb the other process. |
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- Update the kernel state with all outstanding changes. |
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- Update the "event loop time" (ev_now ()). |
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- Calculate for how long to sleep or block, if at all |
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(active idle watchers, EVLOOP_NONBLOCK or not having |
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(active idle watchers, EVRUN_NOWAIT or not having |
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any active watchers at all will result in not sleeping). |
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- Sleep if the I/O and timer collect interval say so. |
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- Increment loop iteration counter. |
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- Block the process, waiting for any events. |
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- Queue all outstanding I/O (fd) events. |
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- Update the "event loop time" (ev_now ()), and do time jump adjustments. |
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- Queue all expired timers. |
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- Queue all expired periodics. |
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- Unless any events are pending now, queue all idle watchers. |
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- Queue all idle watchers with priority higher than that of pending events. |
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- Queue all check watchers. |
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- Call all queued watchers in reverse order (i.e. check watchers first). |
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Signals and child watchers are implemented as I/O watchers, and will |
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be handled here by queueing them when their watcher gets executed. |
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- If ev_unloop has been called, or EVLOOP_ONESHOT or EVLOOP_NONBLOCK |
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were used, or there are no active watchers, return, otherwise |
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continue with step *. |
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- If ev_break has been called, or EVRUN_ONCE or EVRUN_NOWAIT |
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were used, or there are no active watchers, goto FINISH, otherwise |
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continue with step LOOP. |
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FINISH: |
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- Reset the ev_break status iff it was EVBREAK_ONE. |
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- Decrement the loop depth. |
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- Return. |
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Example: Queue some jobs and then loop until no events are outstanding |
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anymore. |
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... queue jobs here, make sure they register event watchers as long |
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... as they still have work to do (even an idle watcher will do..) |
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ev_loop (my_loop, 0); |
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ev_run (my_loop, 0); |
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... jobs done or somebody called unloop. yeah! |
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=item ev_unloop (loop, how) |
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=item ev_break (loop, how) |
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Can be used to make a call to C<ev_loop> return early (but only after it |
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Can be used to make a call to C<ev_run> return early (but only after it |
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has processed all outstanding events). The C<how> argument must be either |
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C<EVUNLOOP_ONE>, which will make the innermost C<ev_loop> call return, or |
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C<EVUNLOOP_ALL>, which will make all nested C<ev_loop> calls return. |
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C<EVBREAK_ONE>, which will make the innermost C<ev_run> call return, or |
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C<EVBREAK_ALL>, which will make all nested C<ev_run> calls return. |
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This "unloop state" will be cleared when entering C<ev_loop> again. |
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This "unloop state" will be cleared when entering C<ev_run> again. |
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It is safe to call C<ev_unloop> from outside any C<ev_loop> calls. |
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It is safe to call C<ev_break> from outside any C<ev_run> calls. ##TODO## |
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=item ev_ref (loop) |
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@ -804,15 +819,15 @@ It is safe to call C<ev_unloop> from outside any C<ev_loop> calls. |
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Ref/unref can be used to add or remove a reference count on the event |
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loop: Every watcher keeps one reference, and as long as the reference |
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count is nonzero, C<ev_loop> will not return on its own. |
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count is nonzero, C<ev_run> will not return on its own. |
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This is useful when you have a watcher that you never intend to |
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unregister, but that nevertheless should not keep C<ev_loop> from |
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unregister, but that nevertheless should not keep C<ev_run> from |
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returning. In such a case, call C<ev_unref> after starting, and C<ev_ref> |
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before stopping it. |
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As an example, libev itself uses this for its internal signal pipe: It |
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is not visible to the libev user and should not keep C<ev_loop> from |
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is not visible to the libev user and should not keep C<ev_run> from |
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exiting if no event watchers registered by it are active. It is also an |
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excellent way to do this for generic recurring timers or from within |
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third-party libraries. Just remember to I<unref after start> and I<ref |
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@ -821,7 +836,7 @@ before, respectively. Note also that libev might stop watchers itself |
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(e.g. non-repeating timers) in which case you have to C<ev_ref> |
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in the callback). |
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Example: Create a signal watcher, but keep it from keeping C<ev_loop> |
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Example: Create a signal watcher, but keep it from keeping C<ev_run> |
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running when nothing else is active. |
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ev_signal exitsig; |
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@ -894,7 +909,7 @@ more often than 100 times per second: |
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=item ev_invoke_pending (loop) |
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This call will simply invoke all pending watchers while resetting their |
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pending state. Normally, C<ev_loop> does this automatically when required, |
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pending state. Normally, C<ev_run> does this automatically when required, |
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but when overriding the invoke callback this call comes handy. |
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=item int ev_pending_count (loop) |
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@ -905,7 +920,7 @@ are pending. |
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=item ev_set_invoke_pending_cb (loop, void (*invoke_pending_cb)(EV_P)) |
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This overrides the invoke pending functionality of the loop: Instead of |
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invoking all pending watchers when there are any, C<ev_loop> will call |
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invoking all pending watchers when there are any, C<ev_run> will call |
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this callback instead. This is useful, for example, when you want to |
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invoke the actual watchers inside another context (another thread etc.). |
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@ -918,10 +933,10 @@ Sometimes you want to share the same loop between multiple threads. This |
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can be done relatively simply by putting mutex_lock/unlock calls around |
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each call to a libev function. |
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However, C<ev_loop> can run an indefinite time, so it is not feasible to |
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wait for it to return. One way around this is to wake up the loop via |
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C<ev_unloop> and C<av_async_send>, another way is to set these I<release> |
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and I<acquire> callbacks on the loop. |
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However, C<ev_run> can run an indefinite time, so it is not feasible |
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to wait for it to return. One way around this is to wake up the event |
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loop via C<ev_break> and C<av_async_send>, another way is to set these |
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I<release> and I<acquire> callbacks on the loop. |
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When set, then C<release> will be called just before the thread is |
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suspended waiting for new events, and C<acquire> is called just |
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@ -934,10 +949,10 @@ While event loop modifications are allowed between invocations of |
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C<release> and C<acquire> (that's their only purpose after all), no |
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modifications done will affect the event loop, i.e. adding watchers will |
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have no effect on the set of file descriptors being watched, or the time |
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waited. Use an C<ev_async> watcher to wake up C<ev_loop> when you want it |
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waited. Use an C<ev_async> watcher to wake up C<ev_run> when you want it |
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to take note of any changes you made. |
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In theory, threads executing C<ev_loop> will be async-cancel safe between |
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In theory, threads executing C<ev_run> will be async-cancel safe between |
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invocations of C<release> and C<acquire>. |
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See also the locking example in the C<THREADS> section later in this |
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@ -984,7 +999,7 @@ become readable, you would create an C<ev_io> watcher for that: |
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static void my_cb (struct ev_loop *loop, ev_io *w, int revents) |
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{ |
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ev_io_stop (w); |
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ev_unloop (loop, EVUNLOOP_ALL); |
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ev_break (loop, EVBREAK_ALL); |
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} |
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struct ev_loop *loop = ev_default_loop (0); |
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@ -995,7 +1010,7 @@ become readable, you would create an C<ev_io> watcher for that: |
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ev_io_set (&stdin_watcher, STDIN_FILENO, EV_READ); |
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ev_io_start (loop, &stdin_watcher); |
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ev_loop (loop, 0); |
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ev_run (loop, 0); |
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As you can see, you are responsible for allocating the memory for your |
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watcher structures (and it is I<usually> a bad idea to do this on the |
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@ -1069,13 +1084,13 @@ The C<ev_idle> watcher has determined that you have nothing better to do. |
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=item C<EV_CHECK> |
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All C<ev_prepare> watchers are invoked just I<before> C<ev_loop> starts |
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All C<ev_prepare> watchers are invoked just I<before> C<ev_run> starts |
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to gather new events, and all C<ev_check> watchers are invoked just after |
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C<ev_loop> has gathered them, but before it invokes any callbacks for any |
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C<ev_run> has gathered them, but before it invokes any callbacks for any |
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received events. Callbacks of both watcher types can start and stop as |
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many watchers as they want, and all of them will be taken into account |
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(for example, a C<ev_prepare> watcher might start an idle watcher to keep |
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C<ev_loop> from blocking). |
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C<ev_run> from blocking). |
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=item C<EV_EMBED> |
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@ -1626,7 +1641,7 @@ attempt to read a whole line in the callback. |
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ev_io stdin_readable; |
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ev_io_init (&stdin_readable, stdin_readable_cb, STDIN_FILENO, EV_READ); |
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ev_io_start (loop, &stdin_readable); |
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ev_loop (loop, 0); |
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ev_run (loop, 0); |
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=head2 C<ev_timer> - relative and optionally repeating timeouts |
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@ -1645,7 +1660,7 @@ passed (not I<at>, so on systems with very low-resolution clocks this |
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might introduce a small delay). If multiple timers become ready during the |
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same loop iteration then the ones with earlier time-out values are invoked |
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before ones of the same priority with later time-out values (but this is |
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no longer true when a callback calls C<ev_loop> recursively). |
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no longer true when a callback calls C<ev_run> recursively). |
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=head3 Be smart about timeouts |
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@ -1826,7 +1841,7 @@ overkill :) |
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Establishing the current time is a costly operation (it usually takes at |
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least two system calls): EV therefore updates its idea of the current |
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time only before and after C<ev_loop> collects new events, which causes a |
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time only before and after C<ev_run> collects new events, which causes a |
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growing difference between C<ev_now ()> and C<ev_time ()> when handling |
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lots of events in one iteration. |
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@ -1953,7 +1968,7 @@ inactivity. |
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ev_timer mytimer; |
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ev_timer_init (&mytimer, timeout_cb, 0., 10.); /* note, only repeat used */ |
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ev_timer_again (&mytimer); /* start timer */ |
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ev_loop (loop, 0); |
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ev_run (loop, 0); |
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// and in some piece of code that gets executed on any "activity": |
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// reset the timeout to start ticking again at 10 seconds |
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@ -1989,7 +2004,7 @@ As with timers, the callback is guaranteed to be invoked only when the |
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point in time where it is supposed to trigger has passed. If multiple |
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timers become ready during the same loop iteration then the ones with |
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earlier time-out values are invoked before ones with later time-out values |
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(but this is no longer true when a callback calls C<ev_loop> recursively). |
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(but this is no longer true when a callback calls C<ev_run> recursively). |
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=head3 Watcher-Specific Functions and Data Members |
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@ -2237,7 +2252,7 @@ Example: Try to exit cleanly on SIGINT. |
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static void |
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sigint_cb (struct ev_loop *loop, ev_signal *w, int revents) |
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{ |
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ev_unloop (loop, EVUNLOOP_ALL); |
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ev_break (loop, EVBREAK_ALL); |
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} |
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ev_signal signal_watcher; |
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@ -2633,7 +2648,7 @@ Prepare and check watchers are usually (but not always) used in pairs: |
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prepare watchers get invoked before the process blocks and check watchers |
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afterwards. |
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You I<must not> call C<ev_loop> or similar functions that enter |
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You I<must not> call C<ev_run> or similar functions that enter |
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the current event loop from either C<ev_prepare> or C<ev_check> |
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watchers. Other loops than the current one are fine, however. The |
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rationale behind this is that you do not need to check for recursion in |
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@ -2811,7 +2826,7 @@ libglib event loop. |
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// create/start timer |
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// poll |
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ev_loop (EV_A_ 0); |
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ev_run (EV_A_ 0); |
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// stop timer again |
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if (timeout >= 0) |
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@ -2899,7 +2914,7 @@ if you do not want that, you need to temporarily stop the embed watcher). |
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=item ev_embed_sweep (loop, ev_embed *) |
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Make a single, non-blocking sweep over the embedded loop. This works |
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similarly to C<ev_loop (embedded_loop, EVLOOP_NONBLOCK)>, but in the most |
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|
similarly to C<ev_run (embedded_loop, EVRUN_NOWAIT)>, but in the most |
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|
appropriate way for embedded loops. |
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=item struct ev_loop *other [read-only] |
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@ -3015,7 +3030,7 @@ believe me. |
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=head2 C<ev_async> - how to wake up an event loop |
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|
In general, you cannot use an C<ev_loop> from multiple threads or other |
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|
In general, you cannot use an C<ev_run> from multiple threads or other |
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|
asynchronous sources such as signal handlers (as opposed to multiple event |
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loops - those are of course safe to use in different threads). |
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@ -3532,7 +3547,7 @@ C<EV_A_> is used when other arguments are following. Example: |
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ev_unref (EV_A); |
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|
ev_timer_add (EV_A_ watcher); |
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ev_loop (EV_A_ 0); |
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ev_run (EV_A_ 0); |
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It assumes the variable C<loop> of type C<struct ev_loop *> is in scope, |
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|
which is often provided by the following macro. |
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@ -3582,7 +3597,7 @@ or not. |
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|
ev_check check; |
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|
ev_check_init (&check, check_cb); |
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|
ev_check_start (EV_DEFAULT_ &check); |
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|
ev_loop (EV_DEFAULT_ 0); |
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|
ev_run (EV_DEFAULT_ 0); |
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|
=head1 EMBEDDING |
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@ -3684,6 +3699,22 @@ settings. |
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|
=over 4 |
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|
=item EV_COMPAT3 (h) |
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|
Backwards compatibility is a major concern for libev. This is why this |
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|
release of libev comes with wrappers for the functions and symbols that |
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|
have been renamed between libev version 3 and 4. |
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|
You can disable these wrappers (to test compatibility with future |
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|
|
versions) by defining C<EV_COMPAT3> to C<0> when compiling your |
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|
|
sources. This has the additional advantage that you can drop the C<struct> |
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|
from C<struct ev_loop> declarations, as libev will provide an C<ev_loop> |
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|
typedef in that case. |
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|
In some future version, the default for C<EV_COMPAT3> will become C<0>, |
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|
|
and in some even more future version the compatibility code will be |
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|
|
removed completely. |
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|
|
=item EV_STANDALONE (h) |
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|
Must always be C<1> if you do not use autoconf configuration, which |
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|
@ -4267,7 +4298,7 @@ protecting the loop data, respectively. |
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|
} |
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|
|
The event loop thread first acquires the mutex, and then jumps straight |
|
|
|
into C<ev_loop>: |
|
|
|
into C<ev_run>: |
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|
|
void * |
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|
|
l_run (void *thr_arg) |
|
|
|
@ -4276,7 +4307,7 @@ into C<ev_loop>: |
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|
|
l_acquire (EV_A); |
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|
|
pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0); |
|
|
|
ev_loop (EV_A_ 0); |
|
|
|
ev_run (EV_A_ 0); |
|
|
|
l_release (EV_A); |
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|
|
return 0; |
|
|
|
@ -4338,13 +4369,13 @@ watchers in the next event loop iteration. |
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|
|
|
|
Libev is very accommodating to coroutines ("cooperative threads"): |
|
|
|
libev fully supports nesting calls to its functions from different |
|
|
|
coroutines (e.g. you can call C<ev_loop> on the same loop from two |
|
|
|
coroutines (e.g. you can call C<ev_run> on the same loop from two |
|
|
|
different coroutines, and switch freely between both coroutines running |
|
|
|
the loop, as long as you don't confuse yourself). The only exception is |
|
|
|
that you must not do this from C<ev_periodic> reschedule callbacks. |
|
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|
|
Care has been taken to ensure that libev does not keep local state inside |
|
|
|
C<ev_loop>, and other calls do not usually allow for coroutine switches as |
|
|
|
C<ev_run>, and other calls do not usually allow for coroutine switches as |
|
|
|
they do not call any callbacks. |
|
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|
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|
|
=head2 COMPILER WARNINGS |
|
|
|
@ -4731,25 +4762,38 @@ removed in later versions of libev, so better update early than late. |
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|
|
=over 4 |
|
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|
|
=item C<ev_loop_count> renamed to C<ev_iteration> |
|
|
|
=item function/symbol renames |
|
|
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|
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|
|
=item C<ev_loop_depth> renamed to C<ev_depth> |
|
|
|
A number of functions and symbols have been renamed: |
|
|
|
|
|
|
|
=item C<ev_loop_verify> renamed to C<ev_verify> |
|
|
|
ev_loop => ev_run |
|
|
|
EVLOOP_NONBLOCK => EVRUN_NOWAIT |
|
|
|
EVLOOP_ONESHOT => EVRUN_ONCE |
|
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|
|
Most functions working on C<struct ev_loop> objects don't have an |
|
|
|
C<ev_loop_> prefix, so it was removed. Note that C<ev_loop_fork> is |
|
|
|
still called C<ev_loop_fork> because it would otherwise clash with the |
|
|
|
C<ev_fork> typedef. |
|
|
|
ev_unloop => ev_break |
|
|
|
EVUNLOOP_CANCEL => EVBREAK_CANCEL |
|
|
|
EVUNLOOP_ONE => EVBREAK_ONE |
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|
|
EVUNLOOP_ALL => EVBREAK_ALL |
|
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|
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|
|
=item C<EV_TIMEOUT> renamed to C<EV_TIMER> in C<revents> |
|
|
|
EV_TIMEOUT => EV_TIMER |
|
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|
|
|
|
This is a simple rename - all other watcher types use their name |
|
|
|
as revents flag, and now C<ev_timer> does, too. |
|
|
|
ev_loop_count => ev_iteration |
|
|
|
ev_loop_depth => ev_depth |
|
|
|
ev_loop_verify => ev_verify |
|
|
|
|
|
|
|
Both C<EV_TIMER> and C<EV_TIMEOUT> symbols were present in 3.x versions |
|
|
|
and continue to be present for the foreseeable future, so this is mostly a |
|
|
|
documentation change. |
|
|
|
Most functions working on C<struct ev_loop> objects don't have an |
|
|
|
C<ev_loop_> prefix, so it was removed; C<ev_loop>, C<ev_unloop> and |
|
|
|
associated constants have been renamed to not collide with the C<struct |
|
|
|
ev_loop> anymore and C<EV_TIMER> now follows the same naming scheme |
|
|
|
as all other watcher types. Note that C<ev_loop_fork> is still called |
|
|
|
C<ev_loop_fork> because it would otherwise clash with the C<ev_fork> |
|
|
|
typedef. |
|
|
|
|
|
|
|
=item C<EV_COMPAT3> backwards compatibility mechanism |
|
|
|
|
|
|
|
The backward compatibility mechanism can be controlled by |
|
|
|
C<EV_COMPAT3>. See L<PREPROCESSOR SYMBOLS/MACROS> in the L<EMBEDDING> |
|
|
|
section. |
|
|
|
|
|
|
|
=item C<EV_MINIMAL> mechanism replaced by C<EV_FEATURES> |
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|
Marc Alexander Lehmann
11 years ago