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author | Igor Murashkin <iam@google.com> | 2013-10-30 14:18:46 -0700 |
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committer | Android Git Automerger <android-git-automerger@android.com> | 2013-10-30 14:18:46 -0700 |
commit | de2eae31b370d7e03e9f620958133e20ad264d92 (patch) | |
tree | 6ddc1dae95d99f64064bd78d600d30625a107379 /include/utils | |
parent | 288ebfda3b7de6d27a9e2ecce315e98f2e408e8b (diff) | |
parent | 39f18c9ece973a0eaff7e982a120de63f31ee5c0 (diff) | |
download | system_core-de2eae31b370d7e03e9f620958133e20ad264d92.zip system_core-de2eae31b370d7e03e9f620958133e20ad264d92.tar.gz system_core-de2eae31b370d7e03e9f620958133e20ad264d92.tar.bz2 |
am 39f18c9e: am 1b84e0a3: Merge "utils: Add ProcessCallStack to collect stack traces for all threads in a process" into klp-dev
* commit '39f18c9ece973a0eaff7e982a120de63f31ee5c0':
utils: Add ProcessCallStack to collect stack traces for all threads in a process
Diffstat (limited to 'include/utils')
-rw-r--r-- | include/utils/CallStack.h | 55 | ||||
-rw-r--r-- | include/utils/Printer.h | 119 | ||||
-rw-r--r-- | include/utils/ProcessCallStack.h | 79 |
3 files changed, 235 insertions, 18 deletions
diff --git a/include/utils/CallStack.h b/include/utils/CallStack.h index 61dc832..2056751 100644 --- a/include/utils/CallStack.h +++ b/include/utils/CallStack.h @@ -17,50 +17,72 @@ #ifndef ANDROID_CALLSTACK_H #define ANDROID_CALLSTACK_H -#include <stdint.h> -#include <sys/types.h> - +#include <android/log.h> #include <utils/String8.h> #include <corkscrew/backtrace.h> -// --------------------------------------------------------------------------- +#include <stdint.h> +#include <sys/types.h> namespace android { -class CallStack -{ +class Printer; + +// Collect/print the call stack (function, file, line) traces for a single thread. +class CallStack { public: enum { - MAX_DEPTH = 31 + // Prune the lowest-most stack frames until we have at most MAX_DEPTH. + MAX_DEPTH = 31, + // Placeholder for specifying the current thread when updating the stack. + CURRENT_THREAD = -1, }; + // Create an empty call stack. No-op. CallStack(); + // Create a callstack with the current thread's stack trace. + // Immediately dump it to logcat using the given logtag. CallStack(const char* logtag, int32_t ignoreDepth=1, int32_t maxDepth=MAX_DEPTH); + // Copy the existing callstack (no other side effects). CallStack(const CallStack& rhs); ~CallStack(); + // Copy the existing callstack (no other side effects). CallStack& operator = (const CallStack& rhs); - + + // Compare call stacks by their backtrace frame memory. bool operator == (const CallStack& rhs) const; bool operator != (const CallStack& rhs) const; bool operator < (const CallStack& rhs) const; bool operator >= (const CallStack& rhs) const; bool operator > (const CallStack& rhs) const; bool operator <= (const CallStack& rhs) const; - + + // Get the PC address for the stack frame specified by index. const void* operator [] (int index) const; - + + // Reset the stack frames (same as creating an empty call stack). void clear(); - void update(int32_t ignoreDepth=1, int32_t maxDepth=MAX_DEPTH); + // Immediately collect the stack traces for the specified thread. + void update(int32_t ignoreDepth=1, int32_t maxDepth=MAX_DEPTH, pid_t tid=CURRENT_THREAD); - // Dump a stack trace to the log using the supplied logtag - void dump(const char* logtag, const char* prefix = 0) const; + // Dump a stack trace to the log using the supplied logtag. + void log(const char* logtag, + android_LogPriority priority = ANDROID_LOG_DEBUG, + const char* prefix = 0) const; - // Return a string (possibly very long) containing the complete stack trace + // Dump a stack trace to the specified file descriptor. + void dump(int fd, int indent = 0, const char* prefix = 0) const; + + // Return a string (possibly very long) containing the complete stack trace. String8 toString(const char* prefix = 0) const; - + + // Dump a serialized representation of the stack trace to the specified printer. + void print(Printer& printer) const; + + // Get the count of stack frames that are in this call stack. size_t size() const { return mCount; } private: @@ -70,7 +92,4 @@ private: }; // namespace android - -// --------------------------------------------------------------------------- - #endif // ANDROID_CALLSTACK_H diff --git a/include/utils/Printer.h b/include/utils/Printer.h new file mode 100644 index 0000000..bb66287 --- /dev/null +++ b/include/utils/Printer.h @@ -0,0 +1,119 @@ +/* + * Copyright (C) 2013 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef ANDROID_PRINTER_H +#define ANDROID_PRINTER_H + +#include <android/log.h> + +namespace android { + +// Interface for printing to an arbitrary data stream +class Printer { +public: + // Print a new line specified by 'string'. \n is appended automatically. + // -- Assumes that the string has no new line in it. + virtual void printLine(const char* string = "") = 0; + + // Print a new line specified by the format string. \n is appended automatically. + // -- Assumes that the resulting string has no new line in it. + virtual void printFormatLine(const char* format, ...) __attribute__((format (printf, 2, 3))); + +protected: + Printer(); + virtual ~Printer(); +}; // class Printer + +// Print to logcat +class LogPrinter : public Printer { +public: + // Create a printer using the specified logcat and log priority + // - Unless ignoreBlankLines is false, print blank lines to logcat + // (Note that the default ALOG behavior is to ignore blank lines) + LogPrinter(const char* logtag, + android_LogPriority priority = ANDROID_LOG_DEBUG, + const char* prefix = 0, + bool ignoreBlankLines = false); + + // Print the specified line to logcat. No \n at the end is necessary. + virtual void printLine(const char* string); + +private: + void printRaw(const char* string); + + const char* mLogTag; + android_LogPriority mPriority; + const char* mPrefix; + bool mIgnoreBlankLines; +}; // class LogPrinter + +// Print to a file descriptor +class FdPrinter : public Printer { +public: + // Create a printer using the specified file descriptor. + // - Each line will be prefixed with 'indent' number of blank spaces. + // - In addition, each line will be prefixed with the 'prefix' string. + FdPrinter(int fd, unsigned int indent = 0, const char* prefix = 0); + + // Print the specified line to the file descriptor. \n is appended automatically. + virtual void printLine(const char* string); + +private: + enum { + MAX_FORMAT_STRING = 20, + }; + + int mFd; + unsigned int mIndent; + const char* mPrefix; + char mFormatString[MAX_FORMAT_STRING]; +}; // class FdPrinter + +class String8; + +// Print to a String8 +class String8Printer : public Printer { +public: + // Create a printer using the specified String8 as the target. + // - In addition, each line will be prefixed with the 'prefix' string. + // - target's memory lifetime must be a superset of this String8Printer. + String8Printer(String8* target, const char* prefix = 0); + + // Append the specified line to the String8. \n is appended automatically. + virtual void printLine(const char* string); + +private: + String8* mTarget; + const char* mPrefix; +}; // class String8Printer + +// Print to an existing Printer by adding a prefix to each line +class PrefixPrinter : public Printer { +public: + // Create a printer using the specified printer as the target. + PrefixPrinter(Printer& printer, const char* prefix); + + // Print the line (prefixed with prefix) using the printer. + virtual void printLine(const char* string); + +private: + Printer& mPrinter; + const char* mPrefix; +}; + +}; // namespace android + +#endif // ANDROID_PRINTER_H diff --git a/include/utils/ProcessCallStack.h b/include/utils/ProcessCallStack.h new file mode 100644 index 0000000..4a86869 --- /dev/null +++ b/include/utils/ProcessCallStack.h @@ -0,0 +1,79 @@ +/* + * Copyright (C) 2013 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef ANDROID_PROCESS_CALLSTACK_H +#define ANDROID_PROCESS_CALLSTACK_H + +#include <utils/CallStack.h> +#include <android/log.h> +#include <utils/KeyedVector.h> +#include <utils/String8.h> + +#include <time.h> +#include <sys/types.h> + +namespace android { + +class Printer; + +// Collect/print the call stack (function, file, line) traces for all threads in a process. +class ProcessCallStack { +public: + // Create an empty call stack. No-op. + ProcessCallStack(); + // Copy the existing process callstack (no other side effects). + ProcessCallStack(const ProcessCallStack& rhs); + ~ProcessCallStack(); + + // Immediately collect the stack traces for all threads. + void update(int32_t maxDepth = CallStack::MAX_DEPTH); + + // Print all stack traces to the log using the supplied logtag. + void log(const char* logtag, android_LogPriority priority = ANDROID_LOG_DEBUG, + const char* prefix = 0) const; + + // Dump all stack traces to the specified file descriptor. + void dump(int fd, int indent = 0, const char* prefix = 0) const; + + // Return a string (possibly very long) containing all the stack traces. + String8 toString(const char* prefix = 0) const; + + // Dump a serialized representation of all the stack traces to the specified printer. + void print(Printer& printer) const; + + // Get the number of threads whose stack traces were collected. + size_t size() const; + +private: + void printInternal(Printer& printer, Printer& csPrinter) const; + + // Reset the process's stack frames and metadata. + void clear(); + + struct ThreadInfo { + CallStack callStack; + String8 threadName; + }; + + // tid -> ThreadInfo + KeyedVector<pid_t, ThreadInfo> mThreadMap; + // Time that update() was last called + struct tm mTimeUpdated; +}; + +}; // namespace android + +#endif // ANDROID_PROCESS_CALLSTACK_H |