8289910: unify os::message_box across posix platforms

Backport-of: e5491a2605177a9dca87a060d99aa5ea4fd4a239

src/hotspot/os/aix/os_aix.cpp

@@ -2538,25 +2538,6 @@ os::os_exception_wrapper(java_call_t f, JavaValue* value, const methodHandle& me
 void os::print_statistics() {
 }
 
-bool os::message_box(const char* title, const char* message) {
-  int i;
-  fdStream err(defaultStream::error_fd());
-  for (i = 0; i < 78; i++) err.print_raw("=");
-  err.cr();
-  err.print_raw_cr(title);
-  for (i = 0; i < 78; i++) err.print_raw("-");
-  err.cr();
-  err.print_raw_cr(message);
-  for (i = 0; i < 78; i++) err.print_raw("=");
-  err.cr();
-
-  char buf[16];
-  // Prevent process from exiting upon "read error" without consuming all CPU
-  while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); }
-
-  return buf[0] == 'y' || buf[0] == 'Y';
-}
-
 // This code originates from JDK's sysOpen and open64_w
 // from src/solaris/hpi/src/system_md.c
 

src/hotspot/os/bsd/os_bsd.cpp

@@ -2239,25 +2239,6 @@ void os::os_exception_wrapper(java_call_t f, JavaValue* value,
 void os::print_statistics() {
 }
 
-bool os::message_box(const char* title, const char* message) {
-  int i;
-  fdStream err(defaultStream::error_fd());
-  for (i = 0; i < 78; i++) err.print_raw("=");
-  err.cr();
-  err.print_raw_cr(title);
-  for (i = 0; i < 78; i++) err.print_raw("-");
-  err.cr();
-  err.print_raw_cr(message);
-  for (i = 0; i < 78; i++) err.print_raw("=");
-  err.cr();
-
-  char buf[16];
-  // Prevent process from exiting upon "read error" without consuming all CPU
-  while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); }
-
-  return buf[0] == 'y' || buf[0] == 'Y';
-}
-
 static inline struct timespec get_mtime(const char* filename) {
   struct stat st;
   int ret = os::stat(filename, &st);

src/hotspot/os/linux/os_linux.cpp

@@ -4908,25 +4908,6 @@ os::os_exception_wrapper(java_call_t f, JavaValue* value, const methodHandle& me
 void os::print_statistics() {
 }
 
-bool os::message_box(const char* title, const char* message) {
-  int i;
-  fdStream err(defaultStream::error_fd());
-  for (i = 0; i < 78; i++) err.print_raw("=");
-  err.cr();
-  err.print_raw_cr(title);
-  for (i = 0; i < 78; i++) err.print_raw("-");
-  err.cr();
-  err.print_raw_cr(message);
-  for (i = 0; i < 78; i++) err.print_raw("=");
-  err.cr();
-
-  char buf[16];
-  // Prevent process from exiting upon "read error" without consuming all CPU
-  while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); }
-
-  return buf[0] == 'y' || buf[0] == 'Y';
-}
-
 // This code originates from JDK's sysOpen and open64_w
 // from src/solaris/hpi/src/system_md.c
 

src/hotspot/os/posix/os_posix.cpp

@@ -45,6 +45,7 @@
 #include "runtime/orderAccess.hpp"
 #include "runtime/perfMemory.hpp"
 #include "utilities/align.hpp"
+#include "utilities/defaultStream.hpp"
 #include "utilities/events.hpp"
 #include "utilities/formatBuffer.hpp"
 #include "utilities/macros.hpp"
@@ -1995,6 +1996,25 @@ int os::fork_and_exec(const char* cmd, bool prefer_vfork) {
   }
 }
 
+bool os::message_box(const char* title, const char* message) {
+  int i;
+  fdStream err(defaultStream::error_fd());
+  for (i = 0; i < 78; i++) err.print_raw("=");
+  err.cr();
+  err.print_raw_cr(title);
+  for (i = 0; i < 78; i++) err.print_raw("-");
+  err.cr();
+  err.print_raw_cr(message);
+  for (i = 0; i < 78; i++) err.print_raw("=");
+  err.cr();
+
+  char buf[16];
+  // Prevent process from exiting upon "read error" without consuming all CPU
+  while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); }
+
+  return buf[0] == 'y' || buf[0] == 'Y';
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // runtime exit support