Remove stack_trace_android.cc.
It is moved into libchrome.
Bug: 73606903
Test: Ran on Treehugger.
Change-Id: I9bbb7af30699b4dccd08ac24d0ea59b431e319aa
diff --git a/Android.bp b/Android.bp
index 1ead916..85d31cb 100644
--- a/Android.bp
+++ b/Android.bp
@@ -250,8 +250,6 @@
"base/android/scoped_java_ref.cc",
"base/base_paths.cc",
"base/base_paths_android.cc",
- "base/debug/proc_maps_linux.cc",
- "base/debug/stack_trace_android.cc",
"base/files/file_util_android.cc",
"base/message_loop/message_pump_android.cc",
"base/path_service.cc",
diff --git a/base/debug/proc_maps_linux.cc b/base/debug/proc_maps_linux.cc
deleted file mode 100644
index 0bb44b4..0000000
--- a/base/debug/proc_maps_linux.cc
+++ /dev/null
@@ -1,169 +0,0 @@
-// Copyright (c) 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/debug/proc_maps_linux.h"
-
-#include <fcntl.h>
-#include <stddef.h>
-
-#include "base/files/file_util.h"
-#include "base/files/scoped_file.h"
-#include "base/strings/string_split.h"
-#include "build/build_config.h"
-
-#if defined(OS_LINUX) || defined(OS_ANDROID)
-#include <inttypes.h>
-#endif
-
-#if defined(OS_ANDROID) && !defined(__LP64__)
-// In 32-bit mode, Bionic's inttypes.h defines PRI/SCNxPTR as an
-// unsigned long int, which is incompatible with Bionic's stdint.h
-// defining uintptr_t as an unsigned int:
-// https://code.google.com/p/android/issues/detail?id=57218
-#undef SCNxPTR
-#define SCNxPTR "x"
-#endif
-
-namespace base {
-namespace debug {
-
-// Scans |proc_maps| starting from |pos| returning true if the gate VMA was
-// found, otherwise returns false.
-static bool ContainsGateVMA(std::string* proc_maps, size_t pos) {
-#if defined(ARCH_CPU_ARM_FAMILY)
- // The gate VMA on ARM kernels is the interrupt vectors page.
- return proc_maps->find(" [vectors]\n", pos) != std::string::npos;
-#elif defined(ARCH_CPU_X86_64)
- // The gate VMA on x86 64-bit kernels is the virtual system call page.
- return proc_maps->find(" [vsyscall]\n", pos) != std::string::npos;
-#else
- // Otherwise assume there is no gate VMA in which case we shouldn't
- // get duplicate entires.
- return false;
-#endif
-}
-
-bool ReadProcMaps(std::string* proc_maps) {
- // seq_file only writes out a page-sized amount on each call. Refer to header
- // file for details.
- const long kReadSize = sysconf(_SC_PAGESIZE);
-
- base::ScopedFD fd(HANDLE_EINTR(open("/proc/self/maps", O_RDONLY)));
- if (!fd.is_valid()) {
- DPLOG(ERROR) << "Couldn't open /proc/self/maps";
- return false;
- }
- proc_maps->clear();
-
- while (true) {
- // To avoid a copy, resize |proc_maps| so read() can write directly into it.
- // Compute |buffer| afterwards since resize() may reallocate.
- size_t pos = proc_maps->size();
- proc_maps->resize(pos + kReadSize);
- void* buffer = &(*proc_maps)[pos];
-
- ssize_t bytes_read = HANDLE_EINTR(read(fd.get(), buffer, kReadSize));
- if (bytes_read < 0) {
- DPLOG(ERROR) << "Couldn't read /proc/self/maps";
- proc_maps->clear();
- return false;
- }
-
- // ... and don't forget to trim off excess bytes.
- proc_maps->resize(pos + bytes_read);
-
- if (bytes_read == 0)
- break;
-
- // The gate VMA is handled as a special case after seq_file has finished
- // iterating through all entries in the virtual memory table.
- //
- // Unfortunately, if additional entries are added at this point in time
- // seq_file gets confused and the next call to read() will return duplicate
- // entries including the gate VMA again.
- //
- // Avoid this by searching for the gate VMA and breaking early.
- if (ContainsGateVMA(proc_maps, pos))
- break;
- }
-
- return true;
-}
-
-bool ParseProcMaps(const std::string& input,
- std::vector<MappedMemoryRegion>* regions_out) {
- CHECK(regions_out);
- std::vector<MappedMemoryRegion> regions;
-
- // This isn't async safe nor terribly efficient, but it doesn't need to be at
- // this point in time.
- std::vector<std::string> lines = SplitString(
- input, "\n", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
-
- for (size_t i = 0; i < lines.size(); ++i) {
- // Due to splitting on '\n' the last line should be empty.
- if (i == lines.size() - 1) {
- if (!lines[i].empty()) {
- DLOG(WARNING) << "Last line not empty";
- return false;
- }
- break;
- }
-
- MappedMemoryRegion region;
- const char* line = lines[i].c_str();
- char permissions[5] = {'\0'}; // Ensure NUL-terminated string.
- uint8_t dev_major = 0;
- uint8_t dev_minor = 0;
- long inode = 0;
- int path_index = 0;
-
- // Sample format from man 5 proc:
- //
- // address perms offset dev inode pathname
- // 08048000-08056000 r-xp 00000000 03:0c 64593 /usr/sbin/gpm
- //
- // The final %n term captures the offset in the input string, which is used
- // to determine the path name. It *does not* increment the return value.
- // Refer to man 3 sscanf for details.
- if (sscanf(line, "%" SCNxPTR "-%" SCNxPTR " %4c %llx %hhx:%hhx %ld %n",
- ®ion.start, ®ion.end, permissions, ®ion.offset,
- &dev_major, &dev_minor, &inode, &path_index) < 7) {
- DPLOG(WARNING) << "sscanf failed for line: " << line;
- return false;
- }
-
- region.permissions = 0;
-
- if (permissions[0] == 'r')
- region.permissions |= MappedMemoryRegion::READ;
- else if (permissions[0] != '-')
- return false;
-
- if (permissions[1] == 'w')
- region.permissions |= MappedMemoryRegion::WRITE;
- else if (permissions[1] != '-')
- return false;
-
- if (permissions[2] == 'x')
- region.permissions |= MappedMemoryRegion::EXECUTE;
- else if (permissions[2] != '-')
- return false;
-
- if (permissions[3] == 'p')
- region.permissions |= MappedMemoryRegion::PRIVATE;
- else if (permissions[3] != 's' && permissions[3] != 'S') // Shared memory.
- return false;
-
- // Pushing then assigning saves us a string copy.
- regions.push_back(region);
- regions.back().path.assign(line + path_index);
- }
-
- regions_out->swap(regions);
- return true;
-}
-
-} // namespace debug
-} // namespace base
diff --git a/base/debug/stack_trace_android.cc b/base/debug/stack_trace_android.cc
deleted file mode 100644
index 329204c..0000000
--- a/base/debug/stack_trace_android.cc
+++ /dev/null
@@ -1,134 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/debug/stack_trace.h"
-
-#include <android/log.h>
-#include <stddef.h>
-#include <unwind.h>
-
-#include <algorithm>
-#include <ostream>
-
-#include "base/debug/proc_maps_linux.h"
-#include "base/strings/stringprintf.h"
-#include "base/threading/thread_restrictions.h"
-
-#ifdef __LP64__
-#define FMT_ADDR "0x%016lx"
-#else
-#define FMT_ADDR "0x%08x"
-#endif
-
-namespace {
-
-struct StackCrawlState {
- StackCrawlState(uintptr_t* frames, size_t max_depth)
- : frames(frames),
- frame_count(0),
- max_depth(max_depth),
- have_skipped_self(false) {}
-
- uintptr_t* frames;
- size_t frame_count;
- size_t max_depth;
- bool have_skipped_self;
-};
-
-_Unwind_Reason_Code TraceStackFrame(_Unwind_Context* context, void* arg) {
- StackCrawlState* state = static_cast<StackCrawlState*>(arg);
- uintptr_t ip = _Unwind_GetIP(context);
-
- // The first stack frame is this function itself. Skip it.
- if (ip != 0 && !state->have_skipped_self) {
- state->have_skipped_self = true;
- return _URC_NO_REASON;
- }
-
- state->frames[state->frame_count++] = ip;
- if (state->frame_count >= state->max_depth)
- return _URC_END_OF_STACK;
- return _URC_NO_REASON;
-}
-
-} // namespace
-
-namespace base {
-namespace debug {
-
-bool EnableInProcessStackDumping() {
- // When running in an application, our code typically expects SIGPIPE
- // to be ignored. Therefore, when testing that same code, it should run
- // with SIGPIPE ignored as well.
- // TODO(phajdan.jr): De-duplicate this SIGPIPE code.
- struct sigaction action;
- memset(&action, 0, sizeof(action));
- action.sa_handler = SIG_IGN;
- sigemptyset(&action.sa_mask);
- return (sigaction(SIGPIPE, &action, NULL) == 0);
-}
-
-StackTrace::StackTrace(size_t count) {
- count = std::min(arraysize(trace_), count);
-
- StackCrawlState state(reinterpret_cast<uintptr_t*>(trace_), count);
- _Unwind_Backtrace(&TraceStackFrame, &state);
- count_ = state.frame_count;
-}
-
-void StackTrace::Print() const {
- std::string backtrace = ToString();
- __android_log_write(ANDROID_LOG_ERROR, "chromium", backtrace.c_str());
-}
-
-// NOTE: Native libraries in APKs are stripped before installing. Print out the
-// relocatable address and library names so host computers can use tools to
-// symbolize and demangle (e.g., addr2line, c++filt).
-void StackTrace::OutputToStream(std::ostream* os) const {
- std::string proc_maps;
- std::vector<MappedMemoryRegion> regions;
- // Allow IO to read /proc/self/maps. Reading this file doesn't hit the disk
- // since it lives in procfs, and this is currently used to print a stack trace
- // on fatal log messages in debug builds only. If the restriction is enabled
- // then it will recursively trigger fatal failures when this enters on the
- // UI thread.
- base::ThreadRestrictions::ScopedAllowIO allow_io;
- if (!ReadProcMaps(&proc_maps)) {
- __android_log_write(
- ANDROID_LOG_ERROR, "chromium", "Failed to read /proc/self/maps");
- } else if (!ParseProcMaps(proc_maps, ®ions)) {
- __android_log_write(
- ANDROID_LOG_ERROR, "chromium", "Failed to parse /proc/self/maps");
- }
-
- for (size_t i = 0; i < count_; ++i) {
- // Subtract one as return address of function may be in the next
- // function when a function is annotated as noreturn.
- uintptr_t address = reinterpret_cast<uintptr_t>(trace_[i]) - 1;
-
- std::vector<MappedMemoryRegion>::iterator iter = regions.begin();
- while (iter != regions.end()) {
- if (address >= iter->start && address < iter->end &&
- !iter->path.empty()) {
- break;
- }
- ++iter;
- }
-
- *os << base::StringPrintf("#%02zd " FMT_ADDR " ", i, address);
-
- if (iter != regions.end()) {
- uintptr_t rel_pc = address - iter->start + iter->offset;
- const char* path = iter->path.c_str();
- *os << base::StringPrintf("%s+" FMT_ADDR, path, rel_pc);
- } else {
- *os << "<unknown>";
- }
-
- *os << "\n";
- }
-}
-
-} // namespace debug
-} // namespace base
