--- /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 "os_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