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2010-11-10 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

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Retry open(2) and fallocate(2) when they are interrupted by
	signal.
	* src/AbstractDiskWriter.cc
This commit is contained in:
Tatsuhiro Tsujikawa 2010-11-09 15:18:25 +00:00
parent 228b4c50d7
commit f1af13567f
2 changed files with 15 additions and 4 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2010-11-10 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>
Retry open(2) and fallocate(2) when they are interrupted by
signal.
* src/AbstractDiskWriter.cc
2010-11-09 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>
Capture errno right after system/library call to avoid it to get

13
src/AbstractDiskWriter.cc
View File

@ -98,7 +98,9 @@ void AbstractDiskWriter::openExistingFile(uint64_t totalLength)
flags |= O_RDWR;
}
if((fd_ = open(filename_.c_str(), flags, OPEN_MODE)) < 0) {
while((fd_ = open(filename_.c_str(), flags, OPEN_MODE)) == -1 &&
errno == EINTR);
if(fd_ < 0) {
int errNum = errno;
throw DL_ABORT_EX2
(errNum,
@ -112,8 +114,10 @@ void AbstractDiskWriter::createFile(int addFlags)
{
assert(!filename_.empty());
util::mkdirs(File(filename_).getDirname());
if((fd_ = open(filename_.c_str(), O_CREAT|O_RDWR|O_TRUNC|O_BINARY|addFlags,
OPEN_MODE)) < 0) {
while((fd_ = open(filename_.c_str(), O_CREAT|O_RDWR|O_TRUNC|O_BINARY|addFlags,
OPEN_MODE)) == -1 && errno == EINTR);
if(fd_ < 0) {
int errNum = errno;
throw DL_ABORT_EX2
(errNum,
@ -222,7 +226,8 @@ void AbstractDiskWriter::allocate(off_t offset, uint64_t length)
# ifdef HAVE_FALLOCATE
// For linux, we use fallocate to detect file system supports
// fallocate or not.
int r = fallocate(fd_, 0, offset, length);
int r;
while((r = fallocate(fd_, 0, offset, length)) == -1 && errno == EINTR);
int errNum = errno;
if(r == -1) {
throw DL_ABORT_EX(StringFormat("fallocate failed. cause: %s",