39 static void Attach(pid_t pid) {  in Attach()  argument
40   if (ptrace(PTRACE_ATTACH, pid, 0, 0) == -1) {  in Attach()
48     if (ptrace(PTRACE_GETSIGINFO, pid, 0, &si) == 0) {  in Attach()
59   ScopedPidReaper(pid_t pid) : pid_(pid) {}  in ScopedPidReaper()  argument
69 static size_t ProcessVmRead(pid_t pid, uint64_t remote_src, void* dst, size_t len) {  in ProcessVmRead()  argument
78   ssize_t rc = process_vm_readv(pid, &dst_iov, 1, &src_iov, 1, 0);  in ProcessVmRead()
82 static bool PtraceReadLong(pid_t pid, uint64_t addr, long* value) {  in PtraceReadLong()  argument
86   *value = ptrace(PTRACE_PEEKTEXT, pid, reinterpret_cast<void*>(addr), nullptr);  in PtraceReadLong()
93 static size_t PtraceRead(pid_t pid, uint64_t addr, void* dst, size_t bytes) {  in PtraceRead()  argument
97     if (!PtraceReadLong(pid, addr, &data)) {  in PtraceRead()
108     if (!PtraceReadLong(pid, addr, &data)) {  in PtraceRead()
117 static void CreateRemoteProcess(size_t size, void** map, pid_t* pid) {  in CreateRemoteProcess()  argument
125   if ((*pid = fork()) == 0) {  in CreateRemoteProcess()
130   if (*pid < 0) {  in CreateRemoteProcess()
134   Attach(*pid);  in CreateRemoteProcess()
141   pid_t pid;  in BM_read_with_ptrace()  local
142   CreateRemoteProcess(state.range(0), &map, &pid);  in BM_read_with_ptrace()
143   ScopedPidReaper reap(pid);  in BM_read_with_ptrace()
148     if (PtraceRead(pid, addr, read_buffer.data(), read_buffer.size()) != read_buffer.size()) {  in BM_read_with_ptrace()
153   ptrace(PTRACE_DETACH, pid, 0, 0);  in BM_read_with_ptrace()
159   pid_t pid;  in BM_read_with_process_vm_read()  local
160   CreateRemoteProcess(state.range(0), &map, &pid);  in BM_read_with_process_vm_read()
161   ScopedPidReaper reap(pid);  in BM_read_with_process_vm_read()
166     if (ProcessVmRead(pid, addr, read_buffer.data(), read_buffer.size()) != read_buffer.size()) {  in BM_read_with_process_vm_read()
171   ptrace(PTRACE_DETACH, pid, 0, 0);  in BM_read_with_process_vm_read()
177   pid_t pid;  in BM_read_with_backtrace_object()  local
178   CreateRemoteProcess(state.range(0), &map, &pid);  in BM_read_with_backtrace_object()
179   ScopedPidReaper reap(pid);  in BM_read_with_backtrace_object()
181   std::unique_ptr<Backtrace> backtrace(Backtrace::Create(pid, BACKTRACE_CURRENT_THREAD));  in BM_read_with_backtrace_object()
195   ptrace(PTRACE_DETACH, pid, 0, 0);  in BM_read_with_backtrace_object()