upstream/mercurial-mirror Files · rust/hg-core/src/utils/files.rs

deltas: skip if projected compressed size does not match text size constraint...

deltas: skip if projected compressed size does not match text size constraint If we have a delta, we check constraints against a lower bound estimate of the resulting compressed delta. We then checks this projected size against the ½ⁿ size constraints. This allows to exclude potential base candidates before doing any expensive computation. This only apply to the intermediate-snapshot case since this constraint only apply to them. For some pathological cases of a private repository this step provide a further performance boost (timing from `hg perfrevlogwrite`): before: 3.145906 seconds after: 3.010646 seconds

Raphaël Gomès - - Load All Authors

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             files.rs
        
                    17 lines
            
             | 371 B
            
                | application/rls-services+xml
            
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                RustLexer
            
             / rust / hg-core / src / utils / files.rs
          
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      use std::path::Path;

      pub fn get_path_from_bytes(bytes: &[u8]) -> &Path {

          let os_str;

          #[cfg(unix)]

          {

              use std::os::unix::ffi::OsStrExt;

              os_str = std::ffi::OsStr::from_bytes(bytes);

          }

          #[cfg(windows)]

          {

              use std::os::windows::ffi::OsStrExt;

              os_str = std::ffi::OsString::from_wide(bytes);

          }

          Path::new(os_str)

      }

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				use std::path::Path;

				pub fn get_path_from_bytes(bytes: &[u8]) -> &Path {
				let os_str;
				#[cfg(unix)]
				{
				use std::os::unix::ffi::OsStrExt;
				os_str = std::ffi::OsStr::from_bytes(bytes);
				}
				#[cfg(windows)]
				{
				use std::os::windows::ffi::OsStrExt;
				os_str = std::ffi::OsString::from_wide(bytes);
				}

				Path::new(os_str)
				}