2010-07-04 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>
When allocating disk space, for Linux system with fallocate() system call, first check file system supports fallocate. This just run fallocate with small chunk and see it succeeds or fails. If it succeeds, use fallocate() to allocate entire file otherwise fall back to traditional slower method: writing zeros. This behavior is enabled in --file-allocation=prealloc, so this is enabled by default for most modern Linux. * configure.ac * src/AbstractDiskWriter.cc * src/AbstractDiskWriter.h * src/AbstractSingleDiskAdaptor.cc * src/AdaptiveFileAllocationIterator.cc * src/AdaptiveFileAllocationIterator.h * src/DefaultPieceStorage.cc * src/DiskAdaptor.cc * src/DiskAdaptor.h * src/FallocFileAllocationIterator.cc * src/Makefile.am * src/MultiFileAllocationIterator.cc * src/OptionHandlerFactory.cc * test/FallocFileAllocationIteratorTest.cc * test/Makefile.am
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@@ -26,6 +26,9 @@ CPPUNIT_TEST_SUITE_REGISTRATION( FallocFileAllocationIteratorTest );
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void FallocFileAllocationIteratorTest::testAllocate()
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{
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// When fallocate is used, test fails if file system does not
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// support it. So skip it.
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#ifndef HAVE_FALLOCATE
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std::string dir = "./";
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std::string fname = "aria2_FallocFileAllocationIteratorTest_testAllocate";
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std::string fn = dir+"/"+fname;
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@@ -48,6 +51,7 @@ void FallocFileAllocationIteratorTest::testAllocate()
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CPPUNIT_ASSERT(itr.finished());
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CPPUNIT_ASSERT_EQUAL((uint64_t)40960, f.size());
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#endif // !HAVE_FALLOCATE
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}
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} // namespace aria2
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