fix pre-allocation when changing priority #7738
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…ly, to make open_file() work as expected. If there's a failure, restore it
| @@ -161,15 +162,22 @@ error_code translate_error(std::error_code const& err, bool const write) | |||
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| download_priority_t const old_prio = m_file_priority[i]; | |||
| download_priority_t new_prio = prio[i]; | |||
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| m_file_priority[i] = new_prio; | |||
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Again, I'm not a C++ guy, but this looks sketchy to me. Also considering that new_prio is not const.
Why do we need such intermediate variable?
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it's not necessary. but I like giving it an intuitive name. it probably should be const, but it's a copy either way.
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while working on a test for this, I realized that the |
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Posix storage is not affected because it does not use this pref in the first place, and |
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I was wrong. files are actually allocated on non-windows when the sparse flag isn't set. |
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I have completely lost the thread of discussion. What do you mean by posix systems? File preallocation does work on Linux (using mmap storage), that's the platform I use and test things on. |
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| /* | ||
| TORRENT_TEST(test_pre_allocate_posix) | ||
| { | ||
| test_pre_allocate<posix_storage>(); | ||
| } | ||
| */ |
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thanks @HanabishiRecca ! |
based on @HanabishiRecca 's research and fix. set m_file_priority early, to make open_file() work as expected. If there's a failure, restore it.
#7733