From fc069a2acecdc9afb4179625939e66e6cd009df8 Mon Sep 17 00:00:00 2001 From: Michael Pfeiffer Date: Sat, 4 Aug 2007 16:35:19 +0000 Subject: [PATCH] * Updated copyright header. * Initial implementation of suggest_thread_priority. It behaves like version from BeOS R5. * TODO take arguments 'period', 'jitter', and 'length' into account as well . git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21825 a95241bf-73f2-0310-859d-f6bbb57e9c96 --- src/system/libroot/os/scheduler.c | 42 ++++++++++++++++++++++++++++--- 1 file changed, 38 insertions(+), 4 deletions(-) diff --git a/src/system/libroot/os/scheduler.c b/src/system/libroot/os/scheduler.c index 2da729344c..5c6a0326c7 100644 --- a/src/system/libroot/os/scheduler.c +++ b/src/system/libroot/os/scheduler.c @@ -1,15 +1,49 @@ /* -** Copyright 2004, Jérôme Duval, korli@users.sourceforge.net. All rights reserved. -** Distributed under the terms of the Haiku License. -*/ + * Copyright 2004-2007, Haiku. All rights reserved. + * Distributed under the terms of the MIT License. + * + * Authors: + * Jérôme Duval, korli@users.sourceforge.net. + * Michael Pfeiffer, laplace@users.sourceforge.net + */ #include + +static struct { + uint32 what; + int32 priority; +} gWhatPriorityArray[] = { + // highest priority first + {B_MIDI_PROCESSING, 0x78}, + {B_AUDIO_RECORDING | B_AUDIO_PLAYBACK, 0x73}, + {B_LIVE_AUDIO_MANIPULATION, 0x6e}, + {B_VIDEO_RECORDING, 0x19}, + {B_VIDEO_PLAYBACK, 0x14}, + {B_USER_INPUT_HANDLING, 0x0f}, + {B_LIVE_VIDEO_MANIPULATION, 0x0e}, + {B_LIVE_3D_RENDERING, 0x0c}, + {B_STATUS_RENDERING, 0xa}, + {B_OFFLINE_PROCESSING, 0x06}, + {B_NUMBER_CRUNCHING, 0x05}, + {(uint32)-1, -1} +}; + int32 suggest_thread_priority(uint32 what, int32 period, bigtime_t jitter, bigtime_t length) { - return 10; + int32 priority = what == B_DEFAULT_MEDIA_PRIORITY ? 0x0a : 0; + // default priority + + for (int i = 0; gWhatPriorityArray[i].what != (uint32)-1; i ++) { + if ((what & gWhatPriorityArray[i].what) != 0) { + priority = gWhatPriorityArray[i].priority; + break; + } + } + + return priority; } bigtime_t