+++ /dev/null
-/**************************************************************************
- *
- * Copyright 2013 Samsung
- * Contributed by Eugene Velesevich
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- **************************************************************************/
-
-/*
- * Wrapper for platform-specific code for obtaining symbolic backtraces
- * on Android and Linux
- */
-
-
-
-#include "trace_backtrace.hpp"
-
-#if defined(ANDROID) || defined(__ELF__)
-
-#include <set>
-#include "os.hpp"
-
-
-namespace trace {
-
-/*
- * Pascal string (with zero terminator optionally omitted)
- * This is a helper class for storing a set of exact strings or prefixes
- * to match a zero-terminated string against later.
- * Two zero-terminated pstrings compare equal iff they are the same.
- * Otherwise, they compare equal iff one is a prefix of the other
- * (a zero-terminated pstring cannot be a prefix)
- */
-
-struct pstring {
- const char* s;
- int n;
- pstring(const char* s, int n)
- {
- this->s = s;
- this->n = n;
- }
- bool operator<(const pstring q2) const
- {
- return memcmp(s, q2.s, n < q2.n? n : q2.n) < 0;
- }
-};
-
-
-class StringPrefixes {
-private:
- std::set<pstring> pset;
-
- void addPrefix(char* startbuf, int n) {
- std::set<pstring>::iterator elem = pset.find(pstring(startbuf, n));
- bool replace = elem != pset.end() && n < elem->n;
- if (replace) {
- pset.erase(elem);
- }
- if (replace || elem == pset.end()) {
- pset.insert(pstring(startbuf, n));
- }
- }
-public:
- StringPrefixes();
-
- bool contain(const char* s) {
- return pset.find(pstring(s, strlen(s) + 1)) != pset.end();
- }
-};
-
-StringPrefixes::StringPrefixes() {
- char *list = getenv("APITRACE_BACKTRACE");
- if (!list)
- return;
- for (char *t = strdup(list); ; t = NULL) {
- char *tok = strtok(t, " \t\r\n");
- if (!tok)
- break;
- if (tok[0] == '#')
- continue;
- if (tok[strlen(tok) - 1] == '*')
- addPrefix(tok, strlen(tok) - 1);
- else
- addPrefix(tok, strlen(tok) + 1);
- }
-}
-
-
-bool backtrace_is_needed(const char* fname) {
- static StringPrefixes backtraceFunctionNamePrefixes;
- return backtraceFunctionNamePrefixes.contain(fname);
-}
-
-} /* namespace trace */
-
-#if defined(ANDROID)
-
-#include <dlfcn.h>
-#include "os.hpp"
-#include <vector>
-
-namespace trace {
-
-/* The following two declarations are copied from Android sources */
-
-enum DebugTargetKind {
- kDebugTargetUnknown = 0,
- kDebugTargetLog,
- kDebugTargetFile,
-};
-
-struct DebugOutputTarget {
- DebugTargetKind which;
-
- union {
- struct {
- int priority;
- const char* tag;
- } log;
- struct {
- FILE* fp;
- } file;
- } data;
-};
-
-#define THREAD_SELF_NAME "_Z13dvmThreadSelfv"
-#define CREATE_DEBUG_TARGET_NAME "_Z25dvmCreateFileOutputTargetP17DebugOutputTargetP7__sFILE"
-#define DUMP_BACKTRACE_NAME "_Z18dvmDumpThreadStackPK17DebugOutputTargetP6Thread"
-
-
-class DalvikBacktraceProvider {
-private:
- bool errorOccured;
- void* (*threadself)(void);
- FILE* streamInMemory;
- char* buf;
- size_t bufSize;
- void (*dumpBacktrace)(const DebugOutputTarget*, void*);
- DebugOutputTarget debugTarget;
- Id nextFrameId;
-public:
- DalvikBacktraceProvider() {
- nextFrameId = 0;
- FILE* (*open_memstream_exp)(char**, size_t*);
- void (*createDebugTarget)(DebugOutputTarget*, FILE*);
- void* handle = dlopen("/system/lib/libdvm.so", 0);
- errorOccured = true;
- if (!handle) {
- os::log("dlopen failed\n");
- return;
- }
- threadself = (void* (*)())dlsym(handle, THREAD_SELF_NAME);
- if (threadself == NULL) {
- os::log("dlsym ThreadSelf failed\n");
- return;
- }
- createDebugTarget = (void (*)(DebugOutputTarget*, FILE*))dlsym(handle, CREATE_DEBUG_TARGET_NAME);
- if (createDebugTarget == NULL) {
- os::log("dlsym CreateFileOutput failed\n");
- return;
- }
- dumpBacktrace = (void (*)(const DebugOutputTarget*, void*))dlsym(handle, DUMP_BACKTRACE_NAME);
- if (dumpBacktrace == NULL) {
- os::log("dlsym DumpThreadStack failed\n");
- return;
- }
- void* handle2 = dlopen("/system/lib/libcutils.so", 0);
- if (!handle2) {
- os::log("dlopen failed\n");
- return;
- }
- open_memstream_exp = (FILE* (*)(char**, size_t*))dlsym(handle2, "open_memstream");
- if (open_memstream_exp == NULL) {
- os::log("dlsym open_memstream failed\n");
- return;
- }
- streamInMemory = open_memstream_exp(&buf, &bufSize);
- if (streamInMemory == NULL) {
- os::log("open_memstream failed\n");
- return;
- }
- createDebugTarget(&debugTarget, streamInMemory);
- errorOccured = false;
- }
-
- inline char* getBacktrace() {
- if (errorOccured) {
- return NULL;
- }
- rewind(streamInMemory);
- dumpBacktrace(&debugTarget, threadself());
- fflush(streamInMemory);
- return buf;
- }
-/*
- * Parse a stack frame, expecting:
- * " at android.view.HardwareRenderer$GlRenderer.initializeEgl(HardwareRenderer.java:547)"
- * or
- * " at android.view.HardwareRenderer$GlRenderer.initializeEgl(Native Method)"
- */
- std::vector<RawStackFrame> parseBacktrace(char *rawBacktrace) {
- std::vector<RawStackFrame> parsedBacktrace;
- char* rawBacktrace_it = rawBacktrace;
- while (*rawBacktrace_it != '\0') {
- RawStackFrame stackFrame;
- // TODO: Keep a cache of stack frames
- stackFrame.id = nextFrameId++;
- /* skip leading space */
- while (*rawBacktrace_it == ' ') {
- rawBacktrace_it++;
- }
- /* Skip "at " */
- rawBacktrace_it += 3;
- stackFrame.function = rawBacktrace_it;
- while (*rawBacktrace_it != '(') {
- rawBacktrace_it++;
- }
- *rawBacktrace_it = '\0';
- stackFrame.filename = rawBacktrace_it + 1;
- while (*rawBacktrace_it != ':' && *rawBacktrace_it != ')') {
- rawBacktrace_it++;
- }
- if (*rawBacktrace_it == ':') {
- const char *linenumber = rawBacktrace_it + 1;
- *rawBacktrace_it = '\0';
- while (*rawBacktrace_it != ')') {
- rawBacktrace_it++;
- }
- *rawBacktrace_it = '\0';
- rawBacktrace_it++;
- stackFrame.linenumber = atoi(linenumber);
- }
- else {
- stackFrame.filename = NULL;
- while (*rawBacktrace_it != '\n') {
- rawBacktrace_it++;
- }
- }
- while (*rawBacktrace_it == '\n' || *rawBacktrace_it == ' ') {
- rawBacktrace_it++;
- }
- parsedBacktrace.push_back(stackFrame); /* module */
- }
- return parsedBacktrace;
- }
-};
-
-std::vector<RawStackFrame> get_backtrace() {
- static DalvikBacktraceProvider backtraceProvider;
- return backtraceProvider.parseBacktrace(backtraceProvider.getBacktrace());
-}
-
-/* end ANDROID */
-#elif defined(__ELF__)
-
-#include <stdint.h>
-#include <dlfcn.h>
-#include <map>
-#include <vector>
-#include <cxxabi.h>
-
-#include <backtrace.h>
-
-namespace trace {
-
-
-
-
-#define BT_DEPTH 10
-
-class libbacktraceProvider {
- struct backtrace_state *state;
- int skipFrames;
- Id nextFrameId;
- std::map<uintptr_t, std::vector<RawStackFrame> > cache;
- std::vector<RawStackFrame> *current, *current_frames;
- RawStackFrame *current_frame;
-
- static void bt_err_callback(void *vdata, const char *msg, int errnum)
- {
- if (errnum == -1)
- return;// no debug/sym info
- else if (errnum)
- os::log("libbacktrace: %s: %s\n", msg, strerror(errnum));
- else
- os::log("libbacktrace: %s\n", msg);
- }
-
- static int bt_countskip(void *vdata, uintptr_t pc)
- {
- libbacktraceProvider *this_ = (libbacktraceProvider*)vdata;
- Dl_info info1, info2;
- if (!dladdr((void*)bt_countskip, &info2)) {
- os::log("dladdr failed, cannot cull stack traces\n");
- return 1;
- }
- if (!dladdr((void*)pc, &info1))
- return 1;
- if (info1.dli_fbase != info2.dli_fbase)
- return 1;
- this_->skipFrames++;
- return 0;
- }
-
- static int bt_full_callback(void *vdata, uintptr_t pc,
- const char *file, int line, const char *func)
- {
- libbacktraceProvider *this_ = (libbacktraceProvider*)vdata;
- RawStackFrame frame = *this_->current_frame;
- frame.id = this_->nextFrameId++;
- frame.filename = file;
- frame.linenumber = line;
- if (func)
- frame.function = func;
- int status;
- if (func && (func = abi::__cxa_demangle(func, NULL, NULL, &status)))
- frame.function = func;
- this_->current_frames->push_back(frame);
- return 0;
- }
-
- static int bt_callback(void *vdata, uintptr_t pc)
- {
- libbacktraceProvider *this_ = (libbacktraceProvider*)vdata;
- std::vector<RawStackFrame> &frames = this_->cache[pc];
- if (!frames.size()) {
- RawStackFrame frame;
- Dl_info info = {0};
- dladdr((void*)pc, &info);
- frame.module = info.dli_fname;
- frame.function = info.dli_sname;
- frame.offset = info.dli_saddr ? pc - (uintptr_t)info.dli_saddr
- : pc - (uintptr_t)info.dli_fbase;
- this_->current_frame = &frame;
- this_->current_frames = &frames;
- backtrace_pcinfo(this_->state, pc, bt_full_callback, bt_err_callback, vdata);
- if (!frames.size()) {
- frame.id = this_->nextFrameId++;
- frames.push_back(frame);
- }
- }
- this_->current->insert(this_->current->end(), frames.begin(), frames.end());
- return this_->current->size() >= BT_DEPTH;
- }
-
-public:
- libbacktraceProvider():
- state(backtrace_create_state(NULL, 0, bt_err_callback, NULL))
- {
- backtrace_simple(state, 0, bt_countskip, bt_err_callback, this);
- }
-
- std::vector<RawStackFrame> getParsedBacktrace()
- {
- std::vector<RawStackFrame> parsedBacktrace;
- current = &parsedBacktrace;
- backtrace_simple(state, skipFrames, bt_callback, bt_err_callback, this);
- return parsedBacktrace;
- }
-};
-
-std::vector<RawStackFrame> get_backtrace() {
- static libbacktraceProvider backtraceProvider;
- return backtraceProvider.getParsedBacktrace();
-}
-
-#endif /* LINUX */
-
-} /* namespace trace */
-
-#endif /* ANDROID or LINUX */
projects / apitrace / blobdiff