1 /* 2 * Copyright (C) 2007 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 #ifndef ANDROID_CALLSTACK_H 18 #define ANDROID_CALLSTACK_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <utils/String8.h> 24 25 // --------------------------------------------------------------------------- 26 27 namespace android { 28 29 class CallStack 30 { 31 public: 32 enum { 33 MAX_DEPTH = 31 34 }; 35 36 CallStack(); 37 CallStack(const CallStack& rhs); 38 ~CallStack(); 39 40 CallStack& operator = (const CallStack& rhs); 41 42 bool operator == (const CallStack& rhs) const; 43 bool operator != (const CallStack& rhs) const; 44 bool operator < (const CallStack& rhs) const; 45 bool operator >= (const CallStack& rhs) const; 46 bool operator > (const CallStack& rhs) const; 47 bool operator <= (const CallStack& rhs) const; 48 49 const void* operator [] (int index) const; 50 51 void clear(); 52 53 void update(int32_t ignoreDepth=1, int32_t maxDepth=MAX_DEPTH); 54 55 // Dump a stack trace to the log 56 void dump(const char* prefix = 0) const; 57 58 // Return a string (possibly very long) containing the complete stack trace 59 String8 toString(const char* prefix = 0) const; 60 size()61 size_t size() const { return mCount; } 62 63 private: 64 // Internal helper function 65 String8 toStringSingleLevel(const char* prefix, int32_t level) const; 66 67 size_t mCount; 68 const void* mStack[MAX_DEPTH]; 69 }; 70 71 }; // namespace android 72 73 74 // --------------------------------------------------------------------------- 75 76 #endif // ANDROID_CALLSTACK_H 77