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e8251298 | 1 | /******************************************************************************* |
ed48dc75 | 2 | * Copyright (c) 2013, 2016 Ericsson |
e8251298 PT |
3 | * |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * Patrick Tasse - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
2bdf0193 | 13 | package org.eclipse.tracecompass.tmf.ui.views.callstack; |
e8251298 | 14 | |
6f8332c4 AM |
15 | import java.util.Optional; |
16 | ||
e8251298 PT |
17 | import org.eclipse.swt.SWT; |
18 | import org.eclipse.swt.graphics.GC; | |
19 | import org.eclipse.swt.graphics.RGB; | |
20 | import org.eclipse.swt.graphics.Rectangle; | |
2bdf0193 AM |
21 | import org.eclipse.tracecompass.internal.tmf.ui.Activator; |
22 | import org.eclipse.tracecompass.internal.tmf.ui.Messages; | |
e894a508 | 23 | import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem; |
e894a508 AM |
24 | import org.eclipse.tracecompass.statesystem.core.exceptions.StateSystemDisposedException; |
25 | import org.eclipse.tracecompass.statesystem.core.exceptions.TimeRangeException; | |
26 | import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue; | |
2bdf0193 AM |
27 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.StateItem; |
28 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.TimeGraphPresentationProvider; | |
29 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeEvent; | |
30 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeGraphEntry; | |
31 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.NullTimeEvent; | |
32 | import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.widgets.Utils; | |
e8251298 | 33 | |
6f8332c4 AM |
34 | import com.google.common.cache.CacheBuilder; |
35 | import com.google.common.cache.CacheLoader; | |
36 | import com.google.common.cache.LoadingCache; | |
37 | ||
e8251298 PT |
38 | /** |
39 | * Presentation provider for the Call Stack view, based on the generic TMF | |
40 | * presentation provider. | |
41 | * | |
42 | * @author Patrick Tasse | |
e8251298 PT |
43 | */ |
44 | public class CallStackPresentationProvider extends TimeGraphPresentationProvider { | |
45 | ||
46 | /** Number of colors used for call stack events */ | |
47 | public static final int NUM_COLORS = 360; | |
48 | ||
ade0a3c5 | 49 | private CallStackView fView; |
5da83da5 | 50 | |
2984a466 AM |
51 | /** |
52 | * Minimum width of a displayed state below which we will not print any text | |
53 | * into it. It corresponds to the average width of 1 char, plus the width of | |
54 | * the ellipsis characters. | |
55 | */ | |
56 | private Integer fMinimumBarWidth; | |
0a563f93 | 57 | |
6f8332c4 AM |
58 | private final LoadingCache<CallStackEvent, Optional<String>> fTimeEventNames = CacheBuilder.newBuilder() |
59 | .maximumSize(1000) | |
60 | .build(new CacheLoader<CallStackEvent, Optional<String>>() { | |
61 | @Override | |
62 | public Optional<String> load(CallStackEvent event) { | |
63 | CallStackEntry entry = event.getEntry(); | |
64 | ITmfStateSystem ss = entry.getStateSystem(); | |
65 | try { | |
66 | ITmfStateValue value = ss.querySingleState(event.getTime(), entry.getQuark()).getStateValue(); | |
67 | if (!value.isNull()) { | |
68 | String name = fView.getFunctionName(entry.getTrace(), entry.getProcessId(), event.getTime(), value); | |
69 | return Optional.ofNullable(name); | |
70 | } | |
71 | } catch (TimeRangeException e) { | |
72 | Activator.getDefault().logError("Error querying state system", e); //$NON-NLS-1$ | |
73 | } catch (StateSystemDisposedException e) { | |
74 | /* Ignored */ | |
75 | } | |
76 | return Optional.empty(); | |
77 | } | |
78 | }); | |
79 | ||
e8251298 PT |
80 | private enum State { |
81 | MULTIPLE (new RGB(100, 100, 100)), | |
82 | EXEC (new RGB(0, 200, 0)); | |
83 | ||
52974e38 | 84 | private final RGB rgb; |
e8251298 PT |
85 | |
86 | private State (RGB rgb) { | |
87 | this.rgb = rgb; | |
88 | } | |
89 | } | |
90 | ||
5da83da5 AM |
91 | /** |
92 | * Constructor | |
93 | * | |
066b02aa | 94 | * @since 1.2 |
ade0a3c5 PT |
95 | */ |
96 | public CallStackPresentationProvider() { | |
97 | } | |
98 | ||
99 | /** | |
100 | * Sets the call stack view | |
101 | * | |
5da83da5 | 102 | * @param view |
ade0a3c5 | 103 | * The call stack view that will contain the time events |
066b02aa | 104 | * @since 1.2 |
5da83da5 | 105 | */ |
ade0a3c5 | 106 | public void setCallStackView(CallStackView view) { |
5da83da5 AM |
107 | fView = view; |
108 | } | |
109 | ||
e8251298 PT |
110 | @Override |
111 | public String getStateTypeName(ITimeGraphEntry entry) { | |
60b4d44c | 112 | return Messages.CallStackPresentationProvider_Thread; |
e8251298 PT |
113 | } |
114 | ||
115 | @Override | |
116 | public StateItem[] getStateTable() { | |
52974e38 PT |
117 | final float saturation = 0.6f; |
118 | final float brightness = 0.6f; | |
e8251298 PT |
119 | StateItem[] stateTable = new StateItem[NUM_COLORS + 1]; |
120 | stateTable[0] = new StateItem(State.MULTIPLE.rgb, State.MULTIPLE.toString()); | |
121 | for (int i = 0; i < NUM_COLORS; i++) { | |
52974e38 | 122 | RGB rgb = new RGB(i, saturation, brightness); |
e8251298 PT |
123 | stateTable[i + 1] = new StateItem(rgb, State.EXEC.toString()); |
124 | } | |
125 | return stateTable; | |
126 | } | |
127 | ||
128 | @Override | |
129 | public int getStateTableIndex(ITimeEvent event) { | |
130 | if (event instanceof CallStackEvent) { | |
131 | CallStackEvent callStackEvent = (CallStackEvent) event; | |
132 | return callStackEvent.getValue() + 1; | |
133 | } else if (event instanceof NullTimeEvent) { | |
134 | return INVISIBLE; | |
135 | } | |
136 | return State.MULTIPLE.ordinal(); | |
137 | } | |
138 | ||
139 | @Override | |
140 | public String getEventName(ITimeEvent event) { | |
141 | if (event instanceof CallStackEvent) { | |
6f8332c4 | 142 | return fTimeEventNames.getUnchecked((CallStackEvent) event).orElse(null); |
e8251298 PT |
143 | } |
144 | return State.MULTIPLE.toString(); | |
145 | } | |
146 | ||
147 | @Override | |
148 | public void postDrawEvent(ITimeEvent event, Rectangle bounds, GC gc) { | |
2984a466 AM |
149 | if (!(event instanceof CallStackEvent)) { |
150 | return; | |
0a563f93 | 151 | } |
2984a466 AM |
152 | |
153 | if (fMinimumBarWidth == null) { | |
154 | fMinimumBarWidth = gc.getFontMetrics().getAverageCharWidth() + gc.stringExtent(Utils.ELLIPSIS).x; | |
155 | } | |
156 | if (bounds.width <= fMinimumBarWidth) { | |
157 | /* | |
158 | * Don't print anything if we cannot at least show one character and | |
159 | * ellipses. | |
160 | */ | |
e8251298 PT |
161 | return; |
162 | } | |
2984a466 AM |
163 | |
164 | String name = fTimeEventNames.getUnchecked((CallStackEvent) event).orElse(""); //$NON-NLS-1$ | |
165 | if (name.isEmpty()) { | |
166 | /* No text to print */ | |
e8251298 PT |
167 | return; |
168 | } | |
2984a466 | 169 | |
6f8332c4 AM |
170 | gc.setForeground(gc.getDevice().getSystemColor(SWT.COLOR_WHITE)); |
171 | Utils.drawText(gc, name, bounds.x, bounds.y, bounds.width, bounds.height, true, true); | |
172 | } | |
173 | ||
174 | /** | |
175 | * Indicate that the provider of function names has changed, so any cached | |
176 | * values must be reset. | |
177 | */ | |
178 | void resetFunctionNames() { | |
179 | fTimeEventNames.invalidateAll(); | |
e8251298 PT |
180 | } |
181 | ||
182 | } |