The Android Open Source Project | 7c1b96a | 2008-10-21 07:00:00 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <utils/TimerProbe.h> |
| 18 | |
| 19 | #if ENABLE_TIMER_PROBE |
| 20 | |
| 21 | #ifdef LOG_TAG |
| 22 | #undef LOG_TAG |
| 23 | #endif |
| 24 | #define LOG_TAG "time" |
| 25 | |
| 26 | namespace android { |
| 27 | |
| 28 | Vector<TimerProbe::Bucket> TimerProbe::gBuckets; |
| 29 | TimerProbe* TimerProbe::gExecuteChain; |
| 30 | int TimerProbe::gIndent; |
| 31 | timespec TimerProbe::gRealBase; |
| 32 | |
| 33 | TimerProbe::TimerProbe(const char tag[], int* slot) : mTag(tag) |
| 34 | { |
| 35 | mNext = gExecuteChain; |
| 36 | gExecuteChain = this; |
| 37 | mIndent = gIndent; |
| 38 | gIndent += 1; |
| 39 | if (mIndent > 0) { |
| 40 | if (*slot == 0) { |
| 41 | int count = gBuckets.add(); |
| 42 | *slot = count; |
| 43 | Bucket& bucket = gBuckets.editItemAt(count); |
| 44 | memset(&bucket, 0, sizeof(Bucket)); |
| 45 | bucket.mTag = tag; |
| 46 | bucket.mSlotPtr = slot; |
| 47 | bucket.mIndent = mIndent; |
| 48 | } |
| 49 | mBucket = *slot; |
| 50 | } |
| 51 | clock_gettime(CLOCK_REALTIME, &mRealStart); |
| 52 | if (gRealBase.tv_sec == 0) |
| 53 | gRealBase = mRealStart; |
| 54 | clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &mPStart); |
| 55 | clock_gettime(CLOCK_THREAD_CPUTIME_ID, &mTStart); |
| 56 | } |
| 57 | |
| 58 | void TimerProbe::end() |
| 59 | { |
| 60 | timespec realEnd, pEnd, tEnd; |
| 61 | clock_gettime(CLOCK_REALTIME, &realEnd); |
| 62 | clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &pEnd); |
| 63 | clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tEnd); |
| 64 | print(realEnd, pEnd, tEnd); |
| 65 | mTag = NULL; |
| 66 | } |
| 67 | |
| 68 | TimerProbe::~TimerProbe() |
| 69 | { |
| 70 | if (mTag != NULL) |
| 71 | end(); |
| 72 | gExecuteChain = mNext; |
| 73 | gIndent--; |
| 74 | } |
| 75 | |
| 76 | |
| 77 | uint32_t TimerProbe::ElapsedTime(const timespec& start, const timespec& end) |
| 78 | { |
| 79 | int sec = end.tv_sec - start.tv_sec; |
| 80 | int nsec = end.tv_nsec - start.tv_nsec; |
| 81 | if (nsec < 0) { |
| 82 | sec--; |
| 83 | nsec += 1000000000; |
| 84 | } |
| 85 | return sec * 1000000 + nsec / 1000; |
| 86 | } |
| 87 | |
| 88 | void TimerProbe::print(const timespec& r, const timespec& p, |
| 89 | const timespec& t) const |
| 90 | { |
| 91 | uint32_t es = ElapsedTime(gRealBase, mRealStart); |
| 92 | uint32_t er = ElapsedTime(mRealStart, r); |
| 93 | uint32_t ep = ElapsedTime(mPStart, p); |
| 94 | uint32_t et = ElapsedTime(mTStart, t); |
| 95 | if (mIndent > 0) { |
| 96 | Bucket& bucket = gBuckets.editItemAt(mBucket); |
| 97 | if (bucket.mStart == 0) |
| 98 | bucket.mStart = es; |
| 99 | bucket.mReal += er; |
| 100 | bucket.mProcess += ep; |
| 101 | bucket.mThread += et; |
| 102 | bucket.mCount++; |
| 103 | return; |
| 104 | } |
| 105 | int index = 0; |
| 106 | int buckets = gBuckets.size(); |
| 107 | int count = 1; |
| 108 | const char* tag = mTag; |
| 109 | int indent = mIndent; |
| 110 | do { |
| 111 | LOGD("%-30.30s: (%3d) %-5.*s time=%-10.3f real=%7dus process=%7dus (%3d%%) thread=%7dus (%3d%%)\n", |
| 112 | tag, count, indent > 5 ? 5 : indent, "+++++", es / 1000000.0, |
| 113 | er, ep, ep * 100 / er, et, et * 100 / er); |
| 114 | if (index >= buckets) |
| 115 | break; |
| 116 | Bucket& bucket = gBuckets.editItemAt(index); |
| 117 | count = bucket.mCount; |
| 118 | es = bucket.mStart; |
| 119 | er = bucket.mReal; |
| 120 | ep = bucket.mProcess; |
| 121 | et = bucket.mThread; |
| 122 | tag = bucket.mTag; |
| 123 | indent = bucket.mIndent; |
| 124 | *bucket.mSlotPtr = 0; |
| 125 | } while (++index); // always true |
| 126 | gBuckets.clear(); |
| 127 | } |
| 128 | |
| 129 | }; // namespace android |
| 130 | |
| 131 | #endif |