nx-libs/nx-X11/programs/Xserver/os/WaitFor.c, branch 3.5.99.18

Use min() [defined in include/misc.h] instead of MIN() [not defined in any Xorg header].

2018-08-21T16:50:22+00:00

Backport from X.org: commit 724dbc2f8bbe2f21bf16f20ca7b8bb555516626c Author: Alan Coopersmith Date: Tue May 2 01:30:37 2006 +0000 Use min() [defined in include/misc.h] instead of MIN() [not defined in any Xorg header]. Backported-to-NX-by: Mike Gabriel

Lift os to XORG-7_1 state - non-functional changes only

2018-02-27T02:13:55+00:00

Xext: lift DPMS extension to xorg-xserver-7.1/1.1 state

2018-02-07T22:15:57+00:00

os: Use NotifyFd interface for listen descriptors

2017-03-21T09:58:08+00:00

Bundle X.org backport of these commits: commit 7ea64fb4374504bd3d524fc08c90efdab9f253ea Author: Alan Coopersmith Date: Mon Mar 9 09:55:57 2015 -0700 Clear ListenTransConns entries in CloseWellKnownConnections Since _XSERVTransClose frees the connection pointer passed to it, remove that pointer from the array, so we don't try to double free it if we come back into CloseWellKnownConnections again. Should fix https://bugzilla.yoctoproject.org/show_bug.cgi?id=6665 in which the shutdown section of the main() loop called CloseWellKnownConnections() and then moved on to ddxGiveUp(), which failed to release the VT and thus called AbortServer(), which called CloseWellKnownConnections() again. Signed-off-by: Alan Coopersmith Reviewed-by: Adam Jackson Signed-off-by: Peter Hutterer commit 7b02f0b87ec2fa0cc5a65307a1fd55c671cec884 Author: Keith Packard Date: Wed Nov 11 22:02:17 2015 -0800 os: Use NotifyFd interface for listen descriptors Replace the custom path for dealing with new incoming connections with the general-purpose NotifyFd API. Reviewed-by: Adam Jackson Signed-off-by: Keith Packard commit ba71b69f94f00a6f6910597185610668e79c10be Author: Alan Coopersmith Date: Fri Jan 1 17:34:41 2016 -0800 Avoid segfault in CloseWellKnownConnections when using -displayfd When -displayfd is looping through the possible display ids to use, if it can't open all the listening sockets for one (say when :0 is already in use), it calls CloseWellKnownConnections to close all the ListenTransConns entries before the point that ListenTransFds was allocated & initialized, so CloseWellKnownConnections would segfault trying to read entries from a NULL ListenTransFds pointer. Introduced by commit 7b02f0b8 Signed-off-by: Alan Coopersmith Reviewed-by: Keith Packard Backported-to-NX-by: Mike Gabriel

dix/os: backport various signal handling and smart scheduler changes from X.org

2017-03-21T09:58:01+00:00

Backported from X.org: commit 6178b1c91cfc9e860914acc6f0be2f2d2e07a124 Author: Adam Jackson Date: Tue Jun 7 15:52:11 2016 -0400 dix: Use OsSignal() not signal() As the man page for the latter states: The effects of signal() in a multithreaded process are unspecified. We already have an interface to call sigaction() instead, use it. Signed-off-by: Adam Jackson Reviewed-by: Keith Packard commit e10ba9e4b52269b2ac75c4802dce4ca47d169657 Author: Keith Packard Date: Wed Nov 11 22:02:01 2015 -0800 Remove non-smart scheduler. Don't require setitimer. This allows the server to call GetTimeInMillis() after each request is processed to avoid needing setitimer. -dumbSched now turns off the setitimer. Reviewed-by: Adam Jackson Signed-off-by: Keith Packard commit 1f915e8b524dd02011158aa038935970684c7630 Author: Daniel Drake Date: Wed May 20 13:16:12 2015 -0600 Keep SIGALRM restart flag after Popen Commit 94ab7455 added SA_RESTART to the SIGALRM handler. However, the Popen code tears down and recreates the SIGALRM handler via OsSignal(), and this flag is dropped at this time. Clean the code to use just a single codepath for creating this signal handler, always applying SA_RESTART. [ajax: Fixed commit id] Reviewed-by: Adam Jackson Signed-off-by: Daniel Drake commit 94ab7455abc213fc96760e29ab2e943ec682fb22 Author: Daniel Drake Date: Tue May 12 16:39:22 2015 -0600 Allow system call restarts upon signal interruption The X server frequently deals with SIGIO and SIGALRM interruptions. If process execution is inside certain blocking system calls when these signals arrive, e.g. with the kernel blocked on a contended semaphore, the system calls will be interrupted. Some system calls are automatically restartable (the kernel re-executes them with the same parameters once the signal handler returns) but only if the signal handler allows it. Set SA_RESTART on the signal handlers to enable this convenient behaviour. Reviewed-by: Adam Jackson Signed-off-by: Daniel Drake commit a6c71ce5d2d2fe89e07a2ef5041c915acc3dc686 Author: Tiago Vignatti Date: Mon Mar 28 19:21:28 2011 +0300 os: fix memory and fd leaks in Popen Signed-off-by: Tiago Vignatti Reviewed-by: Peter Hutterer Reviewed-by: Nicolas Peninguy commit c9051b684b524549eab6d5b88ee3e195a6f6fbe8 Author: Alan Coopersmith Date: Wed Nov 5 18:25:57 2008 -0800 Use OsSignal in Popen/Pclose to avoid SysV signal() stupidity commit 0e9ef65fa583bf2393dd0fda82df6f092387b425 Author: Keith Packard Date: Wed Nov 7 16:33:10 2007 -0800 Don't frob timers unless SmartSchedule is running commit 2338d5c9914e2a43c3a4f7ee0f4355ad0a1ad9e7 Author: Arjan van de Ven Date: Sun Oct 28 09:37:52 2007 +0100 reduce wakeups from smart scheduler The smart scheduler itimer currently always fires after each request (which in turn causes the CPU to wake out of idle, burning precious power). Rather than doing this, just stop the timer before going into the select() portion of the WaitFor loop. It's a cheap system call, and it will only get called if there's no more commands batched up from the active fd. This change also allows some of the functions to be simplified; setitimer() will only fail if it's passed invalid data, and we don't do that... so make it void and remove all the conditional code that deals with failure. The change also allows us to remove a few variables that were used for housekeeping between the signal handler and the main loop. Signed-off-by: Keith Packard **Note**: The above change also required ABI changes in hw/nxagent/. commit abe0a51f3f790f8c055289465e130177c4b647cc Author: Ben Byer Date: Fri Sep 21 17:07:36 2007 -0700 So, like, checking return codes of system calls (signal, etc) is good. Also, only restore an old signal handler if one was actually set (prevents the server from dying on OS X). commit 6da39c67905500ab2db00a45cda4a9f756cdde96 Author: Eric Anholt Date: Wed Sep 12 13:23:13 2007 +0000 Fix build on FreeBSD after Popen changes. commit a5b8053606d6e786cdcf6734f271acc05f9cc588 Author: Adam Jackson Date: Tue Sep 11 11:37:06 2007 -0400 Ignore - not just block - SIGALRM around Popen()/Pclose(). Because our "popen" implementation uses stdio, and because nobody's stdio library is capable of surviving signals, we need to make absolutely sure that we hide the SIGALRM from the smart scheduler. Otherwise, when you open a menu in openoffice, and it recompiles XKB to deal with the accelerators, and you popen xkbcomp because we suck, then the scheduler will tell you you're taking forever doing something stupid, and the wait() code will get confused, and input will hang and your CPU usage slams to 100%. Down, not across. Backported-to-NX-by: Mike Gabriel

dix/os: Merge priority computation into SmartScheduleClient

2017-03-21T09:33:30+00:00

Backported from X.org: commit 7762a602c1dfdd8cfcf2b8c2281cf4d683d05216 Author: Keith Packard Date: Thu May 19 15:05:55 2016 -0700 dix/os: Merge priority computation into SmartScheduleClient Instead of having scheduling done in two places (one in WaitForSomething, and the other in SmartScheduleClient), just stick all of the scheduling in SmartScheduleClient. Signed-off-by: Keith Packard Reviewed-by: Adam Jackson Backported-to-NX-by: Mike Gabriel

os: Implement support for NotifyFd X_NOTIFY_WRITE and removal of AddEnabledDevices/RemoveEnabledDevices

2017-03-17T08:40:37+00:00

Backported from X.org: commit be5a513fee6cbf29ef7570e57eb0436d70fbd88c Author: Keith Packard Date: Mon Dec 7 15:12:14 2015 -0800 Remove AddEnabledDevice and AddGeneralSocket APIs All uses of these interfaces should instead be using the NotifyFd API instead. Signed-off-by: Keith Packard Reviewed-by: Adam Jackson commit 4020aacd1fc5b9c63369f011aeb9120af9c55218 Author: Keith Packard Date: Wed Nov 11 22:02:03 2015 -0800 os: Implement support for NotifyFd X_NOTIFY_WRITE This adds the ability to be notified when a file descriptor is available for writing. Reviewed-by: Adam Jackson Signed-off-by: Keith Packard Backported-to-NX-by: Mike Gabriel

Move the code for resetting the DPMS mode in response to input events, from WaitForSomething to mieqProcessInputEvents.

2017-03-17T08:40:37+00:00

Backported from X.org: commit 3b5b7ef5c2ab1d196806f6359e0972fd78d204dd Author: Fredrik Höglund Date: Wed Jan 3 21:05:35 2007 +0100 Move the code for resetting the DPMS mode in response to input events, from WaitForSomething to mieqProcessInputEvents. mieqProcessInputEvents already handles resetting the screen saver. Backported-to-NX-by: Mike Gabriel

os: Add NotifyFd interfaces

2017-03-15T10:09:41+00:00

Backported from X.org: commit 0c41b7af4ab0c8d22b88f201293f59524d1e7317 Author: Keith Packard Date: Wed Nov 11 22:02:02 2015 -0800 os: Add NotifyFd interfaces This provides a callback-based interface to monitor file descriptors beyond the usual client and device interfaces. Modules within the server using file descriptors for reading and/or writing can call Bool SetNotifyFd(int fd, NotifyFdProcPtr notify_fd, int mask, void *data); mask can be any combination of X_NOTIFY_READ and X_NOTIFY_WRITE. When 'fd' becomes readable or writable, the notify_fd function will be called with the 'fd', the ready conditions and 'data' values as arguments, When the module no longer needs to monitor the fd, it will call void RemoveNotifyFd(int fd); RemoveNotifyFd may be called from the notify function. Reviewed-by: Adam Jackson Signed-off-by: Keith Packard Backported-to-NX-by: Mike Gabriel

The smart scheduler is not optional.

2017-02-15T10:19:06+00:00

Backported from X.org: commit 9f9268821b13038556fbc029df54ab0e9b2aa77f Author: Mathieu Bérard Date: Mon Aug 11 13:52:38 2008 -0400 The smart scheduler is not optional. Backported-to-NX-by: Mike Gabriel