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136 Commits

Author SHA1 Message Date
Max Kellermann
a357d84dce event/DeferredMonitor: make fully thread-safe 
Instead of creating a new eventfd for each DeferredMonitor instance,
reuse EventLoop's eventfd, and add a std::list to EventLoop that
manages the list of pending DeferredMonitors.  This std::list is
protected by the same mutex as the "calls" list.

The bottom line is: reduced overhead because the per-instance eventfd
was eliminated, slightly added overhead due to Mutex usage (but
negligible), and we're thread-safe now.

This subsystem is now good enough to replace EventLoop::AddCall().
 2014-01-04 15:58:59 +01:00
Max Kellermann
e73d0df2b6 event/*Monitor: document as not being thread-safe 2013-12-31 15:59:41 +01:00
Max Kellermann
af3f483924 event/Loop: document that AddCall() is thread-safe 2013-12-31 15:31:59 +01:00
Max Kellermann
6416198e9f event/PollGroupPoll: include stddef.h instead of string.h 2013-12-21 21:21:25 +01:00
Max Kellermann
d86cd4e4b4 util/fifo_buffer: remove obsolete library 2013-12-19 12:17:09 +01:00
Max Kellermann
52dca859c7 util/PeakBuffer: use IsEmpty() instead of IsNull() 
The DynamicFifoBuffer methods never return nullptr when the buffer is
empty or full; instead, they return an empty buffer.  This bug caused
an endless loop.
 2013-12-19 10:30:26 +01:00
Max Kellermann
ecdebb315f util/PeakBuffer: use DynamicFifoBuffer instead of struct fifo_buffer 
Switch to the C++ version.
 2013-12-15 23:07:08 +01:00
Max Kellermann
1f523be72d util/PeakBuffer: return ConstBuffer<void> 2013-12-15 23:07:08 +01:00
Max Kellermann
d5dfe7d457 configure.ac: add option "--disable-glib" 
Allows building without GLib.  This fails to compile currently,
because GLib is still used in the MPD core.
 2013-12-15 18:43:12 +01:00
Max Kellermann
e1901e97c2 system/Resolver: sockaddr_to_string() returns std::string() 
No GLib memory allocation.
 2013-12-04 08:43:55 +01:00
Denis Krjuchkov
07352e82f1 PollGroupWinSelect: delete copy constructor and assignment operator 2013-12-03 11:43:26 +06:00
Denis Krjuchkov
1003cc9bf9 PollGroupWinSelect: uninline constructor and destructor 2013-12-03 11:41:36 +06:00
Denis Krjuchkov
1df426aa5c event: add poll() based PollGroup implementation 2013-12-02 14:39:52 +06:00
Denis Krjuchkov
71bc15aca1 PollGroupEPoll.hxx: add const modifiers where applicable 2013-11-29 15:26:57 +06:00
Denis Krjuchkov
cfdd5edc49 event: implement PollGroup based on Windows select 2013-11-29 15:05:01 +06:00
Denis Krjuchkov
bb288f0284 event: introduce generic API for internal event loop 2013-11-28 17:06:16 +06:00
Max Kellermann
f90abe9530 include cleanup using iwyu 2013-11-28 11:50:54 +01:00
Denis Krjuchkov
46bab7e4b9 Add infrastructure for using multiple event loops 
This change adds two configuration options:

  --with-eventloop=[glib|internal|auto]
  --with-pollmethod=[epoll|auto]

First allows switching between GLib event loop and internal one.
Second chooses backend to use for internal event loop.
Conditional compilation symbols are changed accordingly.
Additional helper macro MPD_OPTIONAL_FUNC_NODEF is added as well.
 2013-11-27 17:28:36 +06:00
Max Kellermann
e53a25cbae event: add API documentation 2013-11-24 19:28:04 +01:00
Max Kellermann
41e7145973 event/SocketMonitor: add missing space 2013-11-24 16:07:12 +01:00
Max Kellermann
5c18e4f114 event/FullyBufferedSocket: remove obsolete TODO comment 
We have a better solution now.
 2013-11-06 23:50:36 +01:00
Max Kellermann
422b8472fe event/FullyBufferedSocket: try to write without extra roundtrip 
Postpone the write using IdleMonitor instead of scheduling a write
event.  This reduces the number of system calls, because we don't need
to register and unregister the write event in epoll.
 2013-11-06 21:52:24 +01:00
Max Kellermann
5b213b0504 event/FullyBufferedSocket: make WriteFromBuffer() protected 
.. and rename it to Flush().
 2013-11-06 21:52:09 +01:00
Max Kellermann
154bdf0bca event/SocketMonitor: add method Abandon() 2013-11-06 19:05:45 +01:00
Max Kellermann
7bca61f5bb event/ServerSocket: don't abort if IPv6 is not available 
First check if an IPv6 socket can be created.
 2013-11-04 23:36:02 +01:00
Max Kellermann
b54762a8f6 event/ServerSocket: fix assertion failure 
Regression from previous commit.  D'oh!
 2013-11-04 20:16:28 +01:00
Max Kellermann
bcae86196c event/ServerSocket: open sockets in the order they were configured 
Use a std::list which can be appended at the end.
 2013-11-04 20:10:46 +01:00
Max Kellermann
20597b3632 *: use nullptr instead of NULL 2013-10-28 23:58:17 +01:00
Max Kellermann
3274bb54ad event/ServerSocket: pass AllocatedPath to AddPath() 2013-10-19 17:40:56 +02:00
Max Kellermann
43863a70c8 SignalMonitor: add SignalMonitorGetEventLoop() 
Eliminate the global variable "shutdown_loop".
 2013-10-18 08:44:40 +02:00
Max Kellermann
12ab556477 event/BufferedSocket: pass writable pointer to OnSocketInput() 
Remove the const_cast from HttpdClient.cxx, and avoid one allocation
in ClientRead.cxx.
 2013-10-15 22:47:46 +02:00
Max Kellermann
84d20d9e43 util/FifoBuffer: C++ version of the fifo_buffer library 2013-10-15 10:28:52 +02:00
Max Kellermann
0c13703da3 system/clock: convert to C++ 2013-10-15 09:38:12 +02:00
Max Kellermann
b97b7a7493 require GLib 2.28 
The header glib_compat.h is now obsolete and can be removed.
 2013-10-15 09:35:25 +02:00
Max Kellermann
be2951b45f gcc.h: rename to Compiler.h 2013-10-15 09:21:59 +02:00
Max Kellermann
060814daa8 Log: new logging library API 
Prepare to migrate away from GLib.  Currently, we're still using GLib
as a backend.
 2013-10-02 08:57:55 +02:00
Max Kellermann
ee9e238179 system/SocketError: un-inline constructor 
Reduces header dependencies.
 2013-09-04 23:36:30 +02:00
Max Kellermann
29030b54c9 util/Error: new error passing library 
Replaces GLib's GError.
 2013-09-04 18:14:22 +02:00
Max Kellermann
c9fcc7f148 system/resolver: convert to C++ 2013-09-04 18:02:09 +02:00
Max Kellermann
00420ef9ca EventLoop: initialise the thread id explicitly 2013-08-10 14:01:55 +02:00
Max Kellermann
c1f4f1fdb6 EventLoop: new implementation using epoll 
Implement an event loop without GLib.
 2013-08-10 13:54:23 +02:00
Max Kellermann
94cdc47786 event/Call: signal the calling thread 
Fixes regression from commit 018f4155.
 2013-08-10 12:40:44 +02:00
Max Kellermann
cc511e7b60 event/IdleMonitor: new monitor class 2013-08-10 11:52:31 +02:00
Max Kellermann
bb2af791e9 event/MultiSocketMonitor: add struct SingleFD 
Prepare for migrating away from GLib.
 2013-08-10 11:52:31 +02:00
Max Kellermann
f3f4b332ae event/MultiSocketMonitor: use uint64_t instead of gint64 
Unsigned and portable.
 2013-08-10 11:52:31 +02:00
Max Kellermann
84ac79bb08 event/MultiSocketMonitor: eliminate virtual method CheckSockets() 
Handle timeout internally.
 2013-08-10 11:52:31 +02:00
Max Kellermann
be0c8495cd event/MultiSocketMonitor: PrepareSockets() returns timeout 
Simplify the API, don't use GLib specific integer type.
 2013-08-10 11:52:31 +02:00
Max Kellermann
d23c907a94 thread/Id: new class replacing GThread pointers 
Remove a GLib dependencies from class EventLoop and DatabaseLock.
 2013-08-10 09:00:04 +02:00
Max Kellermann
018f4155eb event: add function BlockingCall() 
Replaces io_thread_call().  This approach is more generic and easier
to use due to std::function.
 2013-08-08 23:04:07 +02:00
Max Kellermann
9ab0a1f5f1 EventLoop: add methodd IsInside() 
Track which thread runs the EventLoop and provide a check whether
we're currently inside.
 2013-08-08 23:04:01 +02:00
Max Kellermann
c043b337b1 EventLoop: un-inline Run() and others 
Prepare for adding more code.
 2013-08-08 23:03:49 +02:00
Max Kellermann
090bc6fa79 event/*Monitor: add method GetEventLoop() 2013-08-08 23:03:38 +02:00
Max Kellermann
b63db1c1aa event/SocketMonitor: un-inline Schedule() 
Merge with CommitEventFlags().
 2013-08-08 00:18:59 +02:00
Max Kellermann
0287ac794e event/SocketMonitor: add assertions 2013-08-08 00:18:59 +02:00
Max Kellermann
377b6f05ea event/BufferedSocket: add missing include 2013-08-08 00:11:40 +02:00
Max Kellermann
f6f4742410 event/DeferredMonitor: rename Run() to RunDeferred() 2013-08-07 19:39:26 +02:00
Max Kellermann
977004c350 event/DeferredMonitor: use EventLoop::AddIdle() 2013-08-07 19:38:10 +02:00
Max Kellermann
355dd5cb24 event/DeferredMonitor: new class wrapping g_idle_add() 2013-08-07 18:59:42 +02:00
Max Kellermann
f2ce8c3b62 event/EventFD: move to libsystem 2013-08-07 11:52:26 +02:00
Max Kellermann
4223657ab8 event/SignalMonitor: use signalfd() if available 2013-08-07 11:03:47 +02:00
Max Kellermann
930128a7ea SignalHandlers: move code to new class SignalMonitor 2013-08-07 10:56:33 +02:00
Max Kellermann
db447440ff event/Event{Pipe,FD}: auto-create in constructor 
Errors are fatal now.  This makes the class a lot easier to use.
 2013-08-07 10:53:22 +02:00
Max Kellermann
b70d38dc10 Makefile.am: move sources to libsystem.a 2013-08-07 10:31:31 +02:00
Max Kellermann
47e16dbee3 configure.ac: add option --enable-eventfd 
Remove the runtime check for eventfd(), hard-code the feature once
it's been selected at compile time.  The class WakeFD is splitted into
EventFD and EventPipe, using WakeFD as a macro diversion.
 2013-08-06 23:32:21 +02:00
Max Kellermann
98cbc0ea79 event/TimeoutMonitor: eliminate support for periodic events 
No caller needs this.  Fixes use-after-free after returning from
Client::OnTimeout().
 2013-04-08 23:14:07 +02:00
Max Kellermann
5692e20fd5 event/ServerSocket: close only sockets that have been opened 
Fixes assertion failure.
 2013-02-04 11:44:36 +01:00
Uli Schlachter
a4223aac38 ServerSocket: Initialize length variable 2013-02-04 09:30:21 +01:00
Max Kellermann
be3d2188d6 event/SocketMonitor: wake up the event loop after flag change 2013-01-30 15:08:09 +01:00
Max Kellermann
18e429a87e event/Loop: add method WakeUp() 2013-01-30 15:08:09 +01:00
Max Kellermann
18c4b536f2 event/ServerSocket: add method GetEventLoop() 2013-01-30 14:23:01 +01:00
Max Kellermann
fa51db449f ServerSocket: replace callback with virtual method 2013-01-30 14:16:04 +01:00
Max Kellermann
ad5eb2f8d6 ServerSocket: expose the class 
Eliminate the C wrappers.
 2013-01-30 13:40:56 +01:00
Max Kellermann
39d56d6b65 ServerSocket: move to libevent.a 2013-01-30 13:39:12 +01:00
Max Kellermann
a291415326 event/BufferedSocket: move output buffer to FullyBufferedSocket 
BufferedSocket has just an input buffer, and FullyBufferedSocket adds
the output buffer.
 2013-01-30 11:03:44 +01:00
Max Kellermann
4ad7456428 event/SocketMonitor: OnSocketReady() returns bool 2013-01-30 11:03:44 +01:00
Max Kellermann
73f36858bb event/SocketMonitor: add methods Read(), Write() 2013-01-30 10:39:17 +01:00
Max Kellermann
20f85745e7 require GLib 2.24 2013-01-29 18:33:37 +01:00
Max Kellermann
068f191c0d event/SocketMonitor: add method Steal() 2013-01-27 22:38:14 +01:00
Max Kellermann
a0ebd444ad event/SocketMonitor: add method Open() 
Allow creating a closed SocketMonitor instance.
 2013-01-15 22:56:06 +01:00
Max Kellermann
083065f433 input/Curl: move code to class MultiSocketMonitor 2013-01-15 18:16:55 +01:00
Max Kellermann
396480cf94 event/SocketMonitor: wrapper class for GSource + GPollFD 2013-01-15 11:00:48 +01:00
Max Kellermann
d3a479b7fa event/TimeoutMonitor: wrapper for g_timeout_source_new() 2013-01-14 11:12:28 +01:00
Max Kellermann
e83f805b8f Main, IOThread: move GMainLoop setup code to class EventLoop 2013-01-14 09:15:49 +01:00
Denis Krjuchkov
90ab65f8c7 WakeFD.cxx: use two sockets instead of pipe on Win32 
Pipes aren't really pollable on Windows.
GLib emulates polling on pipes using separate reader/writer threads.
This adds significant overhead and keeps a strong dependency on GLib.

socketpair() function is absent on Windows as well.
We implement it here in a loose way.
 2013-01-13 15:30:53 +06:00
Max Kellermann
ecd5eb02c5 event/WakeFD: use eventfd() if available 2013-01-10 00:10:01 +01:00
Max Kellermann
a93caf3cfe GlobalEvents: move code to class WakeFD 2013-01-09 23:47:38 +01:00