src/os/posix/vm/os_posix.cpp

*** 28,61 ****
  
  #include <unistd.h>
  #include <sys/resource.h>
  #include <sys/utsname.h>
  
  
  // Check core dump limit and report possible place where core can be found
  void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) {
    struct rlimit rlim;
-   static char cwd[O_BUFLEN];
    bool success;
! 
!   get_current_directory(cwd, sizeof(cwd));
  
    if (getrlimit(RLIMIT_CORE, &rlim) != 0) {
!     jio_snprintf(buffer, bufferSize, "%s/core or core.%d (may not exist)", cwd, current_process_id());
      success = true;
    } else {
      switch(rlim.rlim_cur) {
        case RLIM_INFINITY:
!         jio_snprintf(buffer, bufferSize, "%s/core or core.%d", cwd, current_process_id());
          success = true;
          break;
        case 0:
          jio_snprintf(buffer, bufferSize, "Core dumps have been disabled. To enable core dumping, try \"ulimit -c unlimited\" before starting Java again");
          success = false;
          break;
        default:
!         jio_snprintf(buffer, bufferSize, "%s/core or core.%d (max size %lu kB). To ensure a full core dump, try \"ulimit -c unlimited\" before starting Java again", cwd, current_process_id(), (unsigned long)(rlim.rlim_cur >> 10));
          success = true;
          break;
      }
    }
    VMError::report_coredump_status(buffer, success);
--- 28,82 ----
  
  #include <unistd.h>
  #include <sys/resource.h>
  #include <sys/utsname.h>
  
+ // Generate the candidate core paths into the supplied buffer
+ // Return the number of characters actually generated
+ int os::Posix::generate_core_paths(char* buffer, size_t bufferSize) {
+   int n;
+ 
+ #ifndef __APPLE__
+   static char cwd[O_BUFLEN];
+ 
+   get_current_directory(cwd, sizeof(cwd));
+ 
+   n = jio_snprintf(buffer, bufferSize, "%s/core or core.%d", cwd, current_process_id());
+ #else
+   n = jio_snprintf(buffer, bufferSize, "/cores/core.%d", current_process_id());
+ #endif
+ 
+   // Truncate if theoretical string was longer than bufferSize
+   n = MIN2(n, (int)bufferSize);
+ 
+   return n;
+ }
+ 
  
  // Check core dump limit and report possible place where core can be found
  void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) {
    struct rlimit rlim;
    bool success;
!   int n;
  
    if (getrlimit(RLIMIT_CORE, &rlim) != 0) {
!     n = os::Posix::generate_core_paths(buffer, bufferSize);
!     jio_snprintf(buffer + n, bufferSize - n, " (may not exist)");
      success = true;
    } else {
      switch(rlim.rlim_cur) {
        case RLIM_INFINITY:
!         os::Posix::generate_core_paths(buffer, bufferSize);
          success = true;
          break;
        case 0:
          jio_snprintf(buffer, bufferSize, "Core dumps have been disabled. To enable core dumping, try \"ulimit -c unlimited\" before starting Java again");
          success = false;
          break;
        default:
!         n = os::Posix::generate_core_paths(buffer, bufferSize);
!         jio_snprintf(buffer + n, bufferSize - n, " (max size %lu kB). To ensure a full core dump, try \"ulimit -c unlimited\" before starting Java again", (unsigned long)(rlim.rlim_cur >> 10));
          success = true;
          break;
      }
    }
    VMError::report_coredump_status(buffer, success);