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-rw-r--r--libs/utils/CallStack.cpp335
1 files changed, 0 insertions, 335 deletions
diff --git a/libs/utils/CallStack.cpp b/libs/utils/CallStack.cpp
deleted file mode 100644
index 26fb22a..0000000
--- a/libs/utils/CallStack.cpp
+++ /dev/null
@@ -1,335 +0,0 @@
-/*
- * Copyright (C) 2007 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.
- */
-
-#define LOG_TAG "CallStack"
-
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-#if HAVE_DLADDR
-#include <dlfcn.h>
-#endif
-
-#if HAVE_CXXABI
-#include <cxxabi.h>
-#endif
-
-#include <unwind.h>
-
-#include <utils/Log.h>
-#include <utils/Errors.h>
-#include <utils/CallStack.h>
-#include <utils/threads.h>
-
-
-/*****************************************************************************/
-namespace android {
-
-
-typedef struct {
- size_t count;
- size_t ignore;
- const void** addrs;
-} stack_crawl_state_t;
-
-static
-_Unwind_Reason_Code trace_function(_Unwind_Context *context, void *arg)
-{
- stack_crawl_state_t* state = (stack_crawl_state_t*)arg;
- if (state->count) {
- void* ip = (void*)_Unwind_GetIP(context);
- if (ip) {
- if (state->ignore) {
- state->ignore--;
- } else {
- state->addrs[0] = ip;
- state->addrs++;
- state->count--;
- }
- }
- }
- return _URC_NO_REASON;
-}
-
-static
-int backtrace(const void** addrs, size_t ignore, size_t size)
-{
- stack_crawl_state_t state;
- state.count = size;
- state.ignore = ignore;
- state.addrs = addrs;
- _Unwind_Backtrace(trace_function, (void*)&state);
- return size - state.count;
-}
-
-/*****************************************************************************/
-
-static
-const char *lookup_symbol(const void* addr, void **offset, char* name, size_t bufSize)
-{
-#if HAVE_DLADDR
- Dl_info info;
- if (dladdr(addr, &info)) {
- *offset = info.dli_saddr;
- return info.dli_sname;
- }
-#endif
- return NULL;
-}
-
-static
-int32_t linux_gcc_demangler(const char *mangled_name, char *unmangled_name, size_t buffersize)
-{
- size_t out_len = 0;
-#if HAVE_CXXABI
- int status = 0;
- char *demangled = abi::__cxa_demangle(mangled_name, 0, &out_len, &status);
- if (status == 0) {
- // OK
- if (out_len < buffersize) memcpy(unmangled_name, demangled, out_len);
- else out_len = 0;
- free(demangled);
- } else {
- out_len = 0;
- }
-#endif
- return out_len;
-}
-
-/*****************************************************************************/
-
-class MapInfo {
- struct mapinfo {
- struct mapinfo *next;
- uint64_t start;
- uint64_t end;
- char name[];
- };
-
- const char *map_to_name(uint64_t pc, const char* def) {
- mapinfo* mi = getMapInfoList();
- while(mi) {
- if ((pc >= mi->start) && (pc < mi->end))
- return mi->name;
- mi = mi->next;
- }
- return def;
- }
-
- mapinfo *parse_maps_line(char *line) {
- mapinfo *mi;
- int len = strlen(line);
- if (len < 1) return 0;
- line[--len] = 0;
- if (len < 50) return 0;
- if (line[20] != 'x') return 0;
- mi = (mapinfo*)malloc(sizeof(mapinfo) + (len - 47));
- if (mi == 0) return 0;
- mi->start = strtoull(line, 0, 16);
- mi->end = strtoull(line + 9, 0, 16);
- mi->next = 0;
- strcpy(mi->name, line + 49);
- return mi;
- }
-
- mapinfo* getMapInfoList() {
- Mutex::Autolock _l(mLock);
- if (milist == 0) {
- char data[1024];
- FILE *fp;
- sprintf(data, "/proc/%d/maps", getpid());
- fp = fopen(data, "r");
- if (fp) {
- while(fgets(data, 1024, fp)) {
- mapinfo *mi = parse_maps_line(data);
- if(mi) {
- mi->next = milist;
- milist = mi;
- }
- }
- fclose(fp);
- }
- }
- return milist;
- }
- mapinfo* milist;
- Mutex mLock;
- static MapInfo sMapInfo;
-
-public:
- MapInfo()
- : milist(0) {
- }
-
- ~MapInfo() {
- while (milist) {
- mapinfo *next = milist->next;
- free(milist);
- milist = next;
- }
- }
-
- static const char *mapAddressToName(const void* pc, const char* def) {
- return sMapInfo.map_to_name((uint64_t)pc, def);
- }
-
-};
-
-/*****************************************************************************/
-
-MapInfo MapInfo::sMapInfo;
-
-/*****************************************************************************/
-
-CallStack::CallStack()
- : mCount(0)
-{
-}
-
-CallStack::CallStack(const CallStack& rhs)
- : mCount(rhs.mCount)
-{
- if (mCount) {
- memcpy(mStack, rhs.mStack, mCount*sizeof(void*));
- }
-}
-
-CallStack::~CallStack()
-{
-}
-
-CallStack& CallStack::operator = (const CallStack& rhs)
-{
- mCount = rhs.mCount;
- if (mCount) {
- memcpy(mStack, rhs.mStack, mCount*sizeof(void*));
- }
- return *this;
-}
-
-bool CallStack::operator == (const CallStack& rhs) const {
- if (mCount != rhs.mCount)
- return false;
- return !mCount || (memcmp(mStack, rhs.mStack, mCount*sizeof(void*)) == 0);
-}
-
-bool CallStack::operator != (const CallStack& rhs) const {
- return !operator == (rhs);
-}
-
-bool CallStack::operator < (const CallStack& rhs) const {
- if (mCount != rhs.mCount)
- return mCount < rhs.mCount;
- return memcmp(mStack, rhs.mStack, mCount*sizeof(void*)) < 0;
-}
-
-bool CallStack::operator >= (const CallStack& rhs) const {
- return !operator < (rhs);
-}
-
-bool CallStack::operator > (const CallStack& rhs) const {
- if (mCount != rhs.mCount)
- return mCount > rhs.mCount;
- return memcmp(mStack, rhs.mStack, mCount*sizeof(void*)) > 0;
-}
-
-bool CallStack::operator <= (const CallStack& rhs) const {
- return !operator > (rhs);
-}
-
-const void* CallStack::operator [] (int index) const {
- if (index >= int(mCount))
- return 0;
- return mStack[index];
-}
-
-
-void CallStack::clear()
-{
- mCount = 0;
-}
-
-void CallStack::update(int32_t ignoreDepth, int32_t maxDepth)
-{
- if (maxDepth > MAX_DEPTH)
- maxDepth = MAX_DEPTH;
- mCount = backtrace(mStack, ignoreDepth, maxDepth);
-}
-
-// Return the stack frame name on the designated level
-String8 CallStack::toStringSingleLevel(const char* prefix, int32_t level) const
-{
- String8 res;
- char namebuf[1024];
- char tmp[256];
- char tmp1[32];
- char tmp2[32];
- void *offs;
-
- const void* ip = mStack[level];
- if (!ip) return res;
-
- if (prefix) res.append(prefix);
- snprintf(tmp1, 32, "#%02d ", level);
- res.append(tmp1);
-
- const char* name = lookup_symbol(ip, &offs, namebuf, sizeof(namebuf));
- if (name) {
- if (linux_gcc_demangler(name, tmp, 256) != 0)
- name = tmp;
- snprintf(tmp1, 32, "0x%p: <", ip);
- snprintf(tmp2, 32, ">+0x%p", offs);
- res.append(tmp1);
- res.append(name);
- res.append(tmp2);
- } else {
- name = MapInfo::mapAddressToName(ip, "<unknown>");
- snprintf(tmp, 256, "pc %p %s", ip, name);
- res.append(tmp);
- }
- res.append("\n");
-
- return res;
-}
-
-// Dump a stack trace to the log
-void CallStack::dump(const char* prefix) const
-{
- /*
- * Sending a single long log may be truncated since the stack levels can
- * get very deep. So we request function names of each frame individually.
- */
- for (int i=0; i<int(mCount); i++) {
- LOGD("%s", toStringSingleLevel(prefix, i).string());
- }
-}
-
-// Return a string (possibly very long) containing the complete stack trace
-String8 CallStack::toString(const char* prefix) const
-{
- String8 res;
-
- for (int i=0; i<int(mCount); i++) {
- res.append(toStringSingleLevel(prefix, i).string());
- }
-
- return res;
-}
-
-/*****************************************************************************/
-
-}; // namespace android
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