src/os/linux/vm/perfMemory_linux.cpp
Index Unified diffs Context diffs Sdiffs Wdiffs Patch New Old Previous File Next File
*** old/src/os/linux/vm/perfMemory_linux.cpp	Mon Dec 20 14:30:53 2010
--- new/src/os/linux/vm/perfMemory_linux.cpp	Mon Dec 20 14:30:52 2010

*** 633,643 **** --- 633,665 ---- } RESTARTABLE(::close(fd), result); return -1; } + // Verify that we have enough disk space for this file. + // We'll get random SIGBUS crashes on memory accesses if + // we don't. + + for (size_t seekpos = 0; seekpos < size; seekpos += os::vm_page_size()) { + int zero_int = 0; + result = (int)os::seek_to_file_offset(fd, (jlong)(seekpos)); + if (result == -1 ) break; + RESTARTABLE(::write(fd, &zero_int, 1), result); + if (result != 1) { + if (errno == ENOSPC) { + warning("Insufficient space for shared memory file:\n %s\nTry using the -Djava.io.tmpdir= option to select an alternate temp location.\n", filename); + } + break; + } + } + + if (result != -1) { return fd; + } else { + RESTARTABLE(::close(fd), result); + return -1; + } } // open the shared memory file for the given user and vmid. returns // the file descriptor for the open file or -1 if the file could not // be opened.

src/os/linux/vm/perfMemory_linux.cpp
Index Unified diffs Context diffs Sdiffs Wdiffs Patch New Old Previous File Next File