Mercurial > hg > truffle
comparison src/os/linux/vm/perfMemory_linux.cpp @ 2103:e24ab3fa6aaf hs20-b06 jdk7-b125
Merge
| author | trims |
|---|---|
| date | Fri, 07 Jan 2011 22:56:35 -0800 |
| parents | 02895c6a2f82 |
| children | d2a62e0f25eb |
comparison
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| 2064:9fc3ffb1e0b1 | 2103:e24ab3fa6aaf |
|---|---|
| 633 } | 633 } |
| 634 RESTARTABLE(::close(fd), result); | 634 RESTARTABLE(::close(fd), result); |
| 635 return -1; | 635 return -1; |
| 636 } | 636 } |
| 637 | 637 |
| 638 return fd; | 638 // Verify that we have enough disk space for this file. |
| 639 // We'll get random SIGBUS crashes on memory accesses if | |
| 640 // we don't. | |
| 641 | |
| 642 for (size_t seekpos = 0; seekpos < size; seekpos += os::vm_page_size()) { | |
| 643 int zero_int = 0; | |
| 644 result = (int)os::seek_to_file_offset(fd, (jlong)(seekpos)); | |
| 645 if (result == -1 ) break; | |
| 646 RESTARTABLE(::write(fd, &zero_int, 1), result); | |
| 647 if (result != 1) { | |
| 648 if (errno == ENOSPC) { | |
| 649 warning("Insufficient space for shared memory file:\n %s\nTry using the -Djava.io.tmpdir= option to select an alternate temp location.\n", filename); | |
| 650 } | |
| 651 break; | |
| 652 } | |
| 653 } | |
| 654 | |
| 655 if (result != -1) { | |
| 656 return fd; | |
| 657 } else { | |
| 658 RESTARTABLE(::close(fd), result); | |
| 659 return -1; | |
| 660 } | |
| 639 } | 661 } |
| 640 | 662 |
| 641 // open the shared memory file for the given user and vmid. returns | 663 // open the shared memory file for the given user and vmid. returns |
| 642 // the file descriptor for the open file or -1 if the file could not | 664 // the file descriptor for the open file or -1 if the file could not |
| 643 // be opened. | 665 // be opened. |