|  | @@ -52,226 +52,6 @@ static unsigned seed(void) { return static_cast<unsigned>(getpid()); }
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				|  |  |  static unsigned seed(void) { return (unsigned)_getpid(); }
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				|  |  |  #endif
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				|  |  |  
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				|  |  | -#if GPR_WINDOWS_CRASH_HANDLER
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				|  |  | -#include <windows.h>
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				|  |  | -
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				|  |  | -#include <tchar.h>
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				|  |  | -
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				|  |  | -// disable warning 4091 - dbghelp.h is broken for msvc2015
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				|  |  | -#pragma warning(disable : 4091)
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				|  |  | -#define DBGHELP_TRANSLATE_TCHAR
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				|  |  | -#include <dbghelp.h>
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				|  |  | -
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				|  |  | -#ifdef _MSC_VER
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				|  |  | -#pragma comment(lib, "dbghelp.lib")
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				|  |  | -#endif
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				|  |  | -
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				|  |  | -static void print_stack_from_context(HANDLE thread, CONTEXT c) {
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				|  |  | -  STACKFRAME s;  // in/out stackframe
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				|  |  | -  memset(&s, 0, sizeof(s));
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				|  |  | -  DWORD imageType;
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				|  |  | -#ifdef _M_IX86
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				|  |  | -  // normally, call ImageNtHeader() and use machine info from PE header
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				|  |  | -  imageType = IMAGE_FILE_MACHINE_I386;
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				|  |  | -  s.AddrPC.Offset = c.Eip;
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				|  |  | -  s.AddrPC.Mode = AddrModeFlat;
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				|  |  | -  s.AddrFrame.Offset = c.Ebp;
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				|  |  | -  s.AddrFrame.Mode = AddrModeFlat;
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				|  |  | -  s.AddrStack.Offset = c.Esp;
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				|  |  | -  s.AddrStack.Mode = AddrModeFlat;
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				|  |  | -#elif _M_X64
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				|  |  | -  imageType = IMAGE_FILE_MACHINE_AMD64;
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				|  |  | -  s.AddrPC.Offset = c.Rip;
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				|  |  | -  s.AddrPC.Mode = AddrModeFlat;
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				|  |  | -  s.AddrFrame.Offset = c.Rbp;
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				|  |  | -  s.AddrFrame.Mode = AddrModeFlat;
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				|  |  | -  s.AddrStack.Offset = c.Rsp;
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				|  |  | -  s.AddrStack.Mode = AddrModeFlat;
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				|  |  | -#elif _M_IA64
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				|  |  | -  imageType = IMAGE_FILE_MACHINE_IA64;
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				|  |  | -  s.AddrPC.Offset = c.StIIP;
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				|  |  | -  s.AddrPC.Mode = AddrModeFlat;
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				|  |  | -  s.AddrFrame.Offset = c.IntSp;
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				|  |  | -  s.AddrFrame.Mode = AddrModeFlat;
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				|  |  | -  s.AddrBStore.Offset = c.RsBSP;
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				|  |  | -  s.AddrBStore.Mode = AddrModeFlat;
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				|  |  | -  s.AddrStack.Offset = c.IntSp;
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				|  |  | -  s.AddrStack.Mode = AddrModeFlat;
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				|  |  | -#else
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				|  |  | -#error "Platform not supported!"
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				|  |  | -#endif
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				|  |  | -
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				|  |  | -  HANDLE process = GetCurrentProcess();
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				|  |  | -
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				|  |  | -  SYMBOL_INFOW* symbol =
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				|  |  | -      (SYMBOL_INFOW*)calloc(sizeof(SYMBOL_INFOW) + 256 * sizeof(wchar_t), 1);
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				|  |  | -  symbol->MaxNameLen = 255;
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				|  |  | -  symbol->SizeOfStruct = sizeof(SYMBOL_INFOW);
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				|  |  | -
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				|  |  | -  const unsigned short MAX_CALLERS_SHOWN =
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				|  |  | -      8192;  // avoid flooding the stderr if stacktrace is way too long
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				|  |  | -  for (int frame = 0; frame < MAX_CALLERS_SHOWN &&
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				|  |  | -                      StackWalk(imageType, process, thread, &s, &c, 0,
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				|  |  | -                                SymFunctionTableAccess, SymGetModuleBase, 0);
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				|  |  | -       frame++) {
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				|  |  | -    PWSTR symbol_name = L"<<no symbol>>";
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				|  |  | -    DWORD64 symbol_address = 0;
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				|  |  | -    if (SymFromAddrW(process, (DWORD64)(s.AddrPC.Offset), 0, symbol)) {
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				|  |  | -      symbol_name = symbol->Name;
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				|  |  | -      symbol_address = (DWORD64)symbol->Address;
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    PWSTR file_name = L"<<no line info>>";
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				|  |  | -    int line_number = 0;
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				|  |  | -    IMAGEHLP_LINE64 line;
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				|  |  | -    line.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
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				|  |  | -    DWORD displacement = 0;
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				|  |  | -    if (SymGetLineFromAddrW64(process, (DWORD64)(s.AddrPC.Offset),
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				|  |  | -                              &displacement, &line)) {
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				|  |  | -      file_name = line.FileName;
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				|  |  | -      line_number = (int)line.LineNumber;
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				|  |  | -    }
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				|  |  | -
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				|  |  | -    fwprintf(stderr, L"*** %d: %016I64X %ls - %016I64X (%ls:%d)\n", frame,
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				|  |  | -             (DWORD64)(s.AddrPC.Offset), symbol_name, symbol_address, file_name,
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				|  |  | -             line_number);
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				|  |  | -    fflush(stderr);
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				|  |  | -  }
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				|  |  | -
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				|  |  | -  free(symbol);
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				|  |  | -}
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				|  |  | -
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				|  |  | -static void print_current_stack() {
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				|  |  | -  CONTEXT context;
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				|  |  | -  RtlCaptureContext(&context);
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				|  |  | -  print_stack_from_context(GetCurrentThread(), context);
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				|  |  | -}
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				|  |  | -
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				|  |  | -static LONG crash_handler(struct _EXCEPTION_POINTERS* ex_info) {
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				|  |  | -  fprintf(stderr, "Exception handler called, dumping information\n");
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				|  |  | -  bool try_to_print_stack = true;
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				|  |  | -  PEXCEPTION_RECORD exrec = ex_info->ExceptionRecord;
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				|  |  | -  while (exrec) {
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				|  |  | -    DWORD code = exrec->ExceptionCode;
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				|  |  | -    DWORD flgs = exrec->ExceptionFlags;
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				|  |  | -    PVOID addr = exrec->ExceptionAddress;
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				|  |  | -    if (code == EXCEPTION_STACK_OVERFLOW) try_to_print_stack = false;
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				|  |  | -    fprintf(stderr, "code: %x - flags: %d - address: %p\n", code, flgs, addr);
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				|  |  | -    exrec = exrec->ExceptionRecord;
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				|  |  | -  }
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				|  |  | -  if (try_to_print_stack) {
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				|  |  | -    print_stack_from_context(GetCurrentThread(), *ex_info->ContextRecord);
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				|  |  | -  }
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				|  |  | -  if (IsDebuggerPresent()) {
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				|  |  | -    __debugbreak();
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				|  |  | -  } else {
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				|  |  | -    _exit(1);
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				|  |  | -  }
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				|  |  | -  return EXCEPTION_EXECUTE_HANDLER;
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				|  |  | -}
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				|  |  | -
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				|  |  | -static void abort_handler(int sig) {
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				|  |  | -  fprintf(stderr, "Abort handler called.\n");
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				|  |  | -  print_current_stack();
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				|  |  | -  if (IsDebuggerPresent()) {
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				|  |  | -    __debugbreak();
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				|  |  | -  } else {
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				|  |  | -    _exit(1);
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				|  |  | -  }
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				|  |  | -}
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				|  |  | -
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				|  |  | -static void install_crash_handler() {
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				|  |  | -  if (!SymInitialize(GetCurrentProcess(), NULL, TRUE)) {
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				|  |  | -    fprintf(stderr, "SymInitialize failed: %d\n", GetLastError());
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				|  |  | -  }
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				|  |  | -  SetUnhandledExceptionFilter((LPTOP_LEVEL_EXCEPTION_FILTER)crash_handler);
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				|  |  | -  _set_abort_behavior(0, _WRITE_ABORT_MSG);
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				|  |  | -  _set_abort_behavior(0, _CALL_REPORTFAULT);
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				|  |  | -  signal(SIGABRT, abort_handler);
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				|  |  | -}
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				|  |  | -#elif GPR_POSIX_CRASH_HANDLER
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				|  |  | -#include <errno.h>
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				|  |  | -#include <execinfo.h>
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				|  |  | -#include <stdio.h>
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				|  |  | -#include <string.h>
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				|  |  | -
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				|  |  | -#define SIGNAL_NAMES_LENGTH 32
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				|  |  | -
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				|  |  | -static const char* const signal_names[] = {
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				|  |  | -    nullptr,   "SIGHUP",  "SIGINT",    "SIGQUIT", "SIGILL",    "SIGTRAP",
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				|  |  | -    "SIGABRT", "SIGBUS",  "SIGFPE",    "SIGKILL", "SIGUSR1",   "SIGSEGV",
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				|  |  | -    "SIGUSR2", "SIGPIPE", "SIGALRM",   "SIGTERM", "SIGSTKFLT", "SIGCHLD",
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				|  |  | -    "SIGCONT", "SIGSTOP", "SIGTSTP",   "SIGTTIN", "SIGTTOU",   "SIGURG",
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				|  |  | -    "SIGXCPU", "SIGXFSZ", "SIGVTALRM", "SIGPROF", "SIGWINCH",  "SIGIO",
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				|  |  | -    "SIGPWR",  "SIGSYS"};
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				|  |  | -
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				|  |  | -static char g_alt_stack[GPR_MAX(MINSIGSTKSZ, 65536)];
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				|  |  | -
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				|  |  | -#define MAX_FRAMES 32
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				|  |  | -
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				|  |  | -/* signal safe output */
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				|  |  | -static void output_string(const char* string) {
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				|  |  | -  size_t len = strlen(string);
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				|  |  | -  ssize_t r;
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				|  |  | -
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				|  |  | -  do {
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				|  |  | -    r = write(STDERR_FILENO, string, len);
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				|  |  | -  } while (r == -1 && errno == EINTR);
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				|  |  | -}
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				|  |  | -
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				|  |  | -static void output_num(long num) {
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				|  |  | -  char buf[GPR_LTOA_MIN_BUFSIZE];
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				|  |  | -  gpr_ltoa(num, buf);
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				|  |  | -  output_string(buf);
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				|  |  | -}
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				|  |  | -
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				|  |  | -static void crash_handler(int signum, siginfo_t* /*info*/, void* /*data*/) {
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				|  |  | -  void* addrlist[MAX_FRAMES + 1];
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				|  |  | -  int addrlen;
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				|  |  | -
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				|  |  | -  output_string("\n\n\n*******************************\nCaught signal ");
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				|  |  | -  if (signum > 0 && signum < SIGNAL_NAMES_LENGTH) {
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				|  |  | -    output_string(signal_names[signum]);
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				|  |  | -  } else {
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				|  |  | -    output_num(signum);
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				|  |  | -  }
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				|  |  | -  output_string("\n");
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				|  |  | -
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				|  |  | -  addrlen = backtrace(addrlist, GPR_ARRAY_SIZE(addrlist));
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				|  |  | -
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				|  |  | -  if (addrlen == 0) {
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				|  |  | -    output_string("  no backtrace\n");
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				|  |  | -  } else {
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				|  |  | -    backtrace_symbols_fd(addrlist, addrlen, STDERR_FILENO);
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				|  |  | -  }
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				|  |  | -
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				|  |  | -  /* try to get a core dump for SIGTERM */
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				|  |  | -  if (signum == SIGTERM) signum = SIGQUIT;
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				|  |  | -  raise(signum);
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				|  |  | -}
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				|  |  | -
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				|  |  | -static void install_crash_handler() {
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				|  |  | -  stack_t ss;
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				|  |  | -  struct sigaction sa;
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				|  |  | -
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				|  |  | -  memset(&ss, 0, sizeof(ss));
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				|  |  | -  memset(&sa, 0, sizeof(sa));
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				|  |  | -  ss.ss_size = sizeof(g_alt_stack);
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				|  |  | -  ss.ss_sp = g_alt_stack;
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				|  |  | -  GPR_ASSERT(sigaltstack(&ss, nullptr) == 0);
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				|  |  | -  sa.sa_flags = static_cast<int>(SA_SIGINFO | SA_ONSTACK | SA_RESETHAND);
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				|  |  | -  sa.sa_sigaction = crash_handler;
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				|  |  | -  GPR_ASSERT(sigaction(SIGILL, &sa, nullptr) == 0);
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				|  |  | -  GPR_ASSERT(sigaction(SIGABRT, &sa, nullptr) == 0);
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				|  |  | -  GPR_ASSERT(sigaction(SIGBUS, &sa, nullptr) == 0);
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				|  |  | -  GPR_ASSERT(sigaction(SIGSEGV, &sa, nullptr) == 0);
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				|  |  | -  GPR_ASSERT(sigaction(SIGTERM, &sa, nullptr) == 0);
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				|  |  | -  GPR_ASSERT(sigaction(SIGQUIT, &sa, nullptr) == 0);
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				|  |  | -}
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				|  |  | -#else
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				|  |  | -static void install_crash_handler() {}
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				|  |  | -#endif
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				|  |  | -
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				|  |  |  bool BuiltUnderValgrind() {
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				|  |  |  #ifdef RUNNING_ON_VALGRIND
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				|  |  |    return true;
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				|  | @@ -374,16 +154,9 @@ gpr_timespec grpc_timeout_milliseconds_to_deadline(int64_t time_ms) {
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				|  |  |  }
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				|  |  |  
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				|  |  |  void grpc_test_init(int argc, char** argv) {
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				|  |  | -#if GPR_WINDOWS
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				|  |  | -  // Windows cannot use absl::InitializeSymbolizer until it fixes mysterious
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				|  |  | -  // SymInitialize failure using Bazel RBE on Windows
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				|  |  | -  // https://github.com/grpc/grpc/issues/24178
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				|  |  | -  install_crash_handler();
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				|  |  | -#else
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				|  |  |    grpc_core::testing::InitializeStackTracer(argv[0]);
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				|  |  |    absl::FailureSignalHandlerOptions options;
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				|  |  |    absl::InstallFailureSignalHandler(options);
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				|  |  | -#endif
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				|  |  |    gpr_log(GPR_DEBUG,
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				|  |  |            "test slowdown factor: sanitizer=%" PRId64 ", fixture=%" PRId64
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				|  |  |            ", poller=%" PRId64 ", total=%" PRId64,
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