src/hotspot/share/utilities/debug.hpp

rev 49276 : 8191101: Show register content in hs-err file on assert
Reviewed-by:

*** 1,7 ****
  /*
!  * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 29,38 ****
--- 29,49 ----
  #include "utilities/compilerWarnings.hpp"
  #include "utilities/macros.hpp"
  
  #include <stddef.h>
  
+ // ShowRegistersOnAssert support (for now Linux only)
+ #if defined(LINUX) && !defined(ZERO)
+ #define CAN_SHOW_REGISTERS_ON_ASSERT
+ extern void* volatile g_assert_poison;
+ #define TOUCH_ASSERT_POISON (*(char*)g_assert_poison = 'X');
+ void initialize_assert_poison();
+ bool handle_assert_poison_fault(const void* ucVoid, const void* faulting_address);
+ #else
+ #define TOUCH_ASSERT_POISON
+ #endif // CAN_SHOW_REGISTERS_ON_ASSERT
+ 
  // assertions
  #ifndef ASSERT
  #define vmassert(p, ...)
  #else
  // Note: message says "assert" rather than "vmassert" for backward
*** 40,49 ****
--- 51,61 ----
  // Note: The signature is vmassert(p, format, ...), but the solaris
  // compiler can't handle an empty ellipsis in a macro without a warning.
  #define vmassert(p, ...)                                                       \
  do {                                                                           \
    if (!(p)) {                                                                  \
+     TOUCH_ASSERT_POISON                                                        \
      if (is_executing_unit_tests()) {                                           \
        report_assert_msg(__VA_ARGS__);                                          \
      }                                                                          \
      report_vm_error(__FILE__, __LINE__, "assert(" #p ") failed", __VA_ARGS__); \
      BREAKPOINT;                                                                \
*** 65,74 ****
--- 77,87 ----
  // an extra arg and use strerror to convert it to a meaningful string
  // like "Invalid argument", "out of memory" etc
  #define vmassert_status(p, status, msg) \
  do {                                                                           \
    if (!(p)) {                                                                  \
+     TOUCH_ASSERT_POISON                                                        \
      report_vm_status_error(__FILE__, __LINE__, "assert(" #p ") failed",        \
                             status, msg);                                       \
      BREAKPOINT;                                                                \
    }                                                                            \
  } while (0)
*** 81,97 ****
--- 94,112 ----
  // cheap tests that catch errors that would otherwise be hard to find.
  // guarantee is also used for Verify options.
  #define guarantee(p, ...)                                                         \
  do {                                                                              \
    if (!(p)) {                                                                     \
+     TOUCH_ASSERT_POISON                                                        \
      report_vm_error(__FILE__, __LINE__, "guarantee(" #p ") failed", __VA_ARGS__); \
      BREAKPOINT;                                                                   \
    }                                                                               \
  } while (0)
  
  #define fatal(...)                                                                \
  do {                                                                              \
+   TOUCH_ASSERT_POISON                                                             \
    report_fatal(__FILE__, __LINE__, __VA_ARGS__);                                  \
    BREAKPOINT;                                                                     \
  } while (0)
  
  // out of memory
*** 101,122 ****
--- 116,140 ----
    BREAKPOINT;                                                                     \
  } while (0)
  
  #define ShouldNotCallThis()                                                       \
  do {                                                                              \
+   TOUCH_ASSERT_POISON                                                             \
    report_should_not_call(__FILE__, __LINE__);                                     \
    BREAKPOINT;                                                                     \
  } while (0)
  
  #define ShouldNotReachHere()                                                      \
  do {                                                                              \
+   TOUCH_ASSERT_POISON                                                             \
    report_should_not_reach_here(__FILE__, __LINE__);                               \
    BREAKPOINT;                                                                     \
  } while (0)
  
  #define Unimplemented()                                                           \
  do {                                                                              \
+   TOUCH_ASSERT_POISON                                                             \
    report_unimplemented(__FILE__, __LINE__);                                       \
    BREAKPOINT;                                                                     \
  } while (0)
  
  #define Untested(msg)                                                             \