1384a3a81f
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21826 a95241bf-73f2-0310-859d-f6bbb57e9c96
59 lines
1.2 KiB
C
59 lines
1.2 KiB
C
/*
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* Copyright 2004-2007, Haiku. All rights reserved.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Jérôme Duval, korli@users.sourceforge.net.
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* Michael Pfeiffer, laplace@users.sourceforge.net
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*/
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#include <scheduler.h>
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static struct {
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uint32 what;
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int32 priority;
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} gWhatPriorityArray[] = {
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// highest priority first
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{B_MIDI_PROCESSING, 0x78},
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{B_AUDIO_RECORDING | B_AUDIO_PLAYBACK, 0x73},
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{B_LIVE_AUDIO_MANIPULATION, 0x6e},
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{B_VIDEO_RECORDING, 0x19},
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{B_VIDEO_PLAYBACK, 0x14},
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{B_USER_INPUT_HANDLING, 0x0f},
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{B_LIVE_VIDEO_MANIPULATION, 0x0e},
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{B_LIVE_3D_RENDERING, 0x0c},
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{B_STATUS_RENDERING, 0xa},
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{B_OFFLINE_PROCESSING, 0x06},
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{B_NUMBER_CRUNCHING, 0x05},
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{(uint32)-1, -1}
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};
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int32
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suggest_thread_priority(uint32 what, int32 period, bigtime_t jitter, bigtime_t length)
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{
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int i;
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int32 priority = what == B_DEFAULT_MEDIA_PRIORITY ? 0x0a : 0;
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// default priority
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for (i = 0; gWhatPriorityArray[i].what != (uint32)-1; i ++) {
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if ((what & gWhatPriorityArray[i].what) != 0) {
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priority = gWhatPriorityArray[i].priority;
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break;
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}
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}
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return priority;
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}
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bigtime_t
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estimate_max_scheduling_latency(thread_id th)
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{
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if (th == -1)
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th = find_thread(NULL);
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return 0;
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}
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