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1 /* | 1 /* |
2 * Copyright (C) 2012 Apple Inc. All rights reserved. | 2 * Copyright (C) 2012 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
12 * | 12 * |
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR | 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 | 25 |
26 #include "config.h" | 26 #include "config.h" |
27 #include "StackStats.h" | 27 #include "StackStats.h" |
28 | 28 |
29 #if ENABLE(STACK_STATS) | 29 #if ENABLE(STACK_STATS) |
30 | 30 |
31 #include "Assertions.h" | 31 #include "Assertions.h" |
32 #include "DataLog.h" | 32 #include "DataLog.h" |
33 #include "WTFThreadData.h" | 33 #include "WTFThreadData.h" |
34 | 34 |
35 // Define the following flag if you want to collect stats on every single | 35 // Define the following flag if you want to collect stats on every single |
36 // checkpoint. By default, we only log checkpoints that establish new | 36 // checkpoint. By default, we only log checkpoints that establish new |
37 // max values. | 37 // max values. |
38 | 38 |
39 // #define ENABLE_VERBOSE_STACK_STATS 1 | 39 // #define ENABLE_VERBOSE_STACK_STATS 1 |
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219 // Push this checkpoint: | 219 // Push this checkpoint: |
220 m_prev = StackStats::s_topLayoutCheckPoint; | 220 m_prev = StackStats::s_topLayoutCheckPoint; |
221 if (m_prev) | 221 if (m_prev) |
222 m_depth = m_prev->m_depth + 1; | 222 m_depth = m_prev->m_depth + 1; |
223 else { | 223 else { |
224 StackStats::s_firstLayoutCheckPoint = this; | 224 StackStats::s_firstLayoutCheckPoint = this; |
225 m_depth = 0; | 225 m_depth = 0; |
226 } | 226 } |
227 StackStats::s_topLayoutCheckPoint = this; | 227 StackStats::s_topLayoutCheckPoint = this; |
228 | 228 |
229 // | 229 // |
230 char* current = reinterpret_cast<char*>(this); | 230 char* current = reinterpret_cast<char*>(this); |
231 char* last = reinterpret_cast<char*>(m_prev); | 231 char* last = reinterpret_cast<char*>(m_prev); |
232 char* root = reinterpret_cast<char*>(StackStats::s_firstLayoutCheckPoint); | 232 char* root = reinterpret_cast<char*>(StackStats::s_firstLayoutCheckPoint); |
233 bool needToLog = false; | 233 bool needToLog = false; |
234 | 234 |
235 int diff = last - current; | 235 int diff = last - current; |
236 if (!last) | 236 if (!last) |
237 diff = 0; | 237 diff = 0; |
238 int totalDiff = root - current; | 238 int totalDiff = root - current; |
239 if (!root) | 239 if (!root) |
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277 // Pop to the previous layout checkpoint: | 277 // Pop to the previous layout checkpoint: |
278 StackStats::s_topLayoutCheckPoint = m_prev; | 278 StackStats::s_topLayoutCheckPoint = m_prev; |
279 if (!m_depth) | 279 if (!m_depth) |
280 StackStats::s_firstLayoutCheckPoint = 0; | 280 StackStats::s_firstLayoutCheckPoint = 0; |
281 } | 281 } |
282 | 282 |
283 } // namespace WTF | 283 } // namespace WTF |
284 | 284 |
285 #endif // ENABLE(STACK_STATS) | 285 #endif // ENABLE(STACK_STATS) |
286 | 286 |
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