upstream/mercurial-mirror Files · mercurial/cffi/bdiffbuild.py

demandimport: make module ignores a set (API)...

demandimport: make module ignores a set (API) The list of modules to ignore is used for membership testing. Yet it is defined as a list. Sets are more efficient for membership testing. So this commit converts the module list to a set. Since we took an API hit, I renamed the variable to further clarify the change. This appears to reduce the CPU time for running 300 invocations of `hg log -r. -T '{rev}'` on my i7-6700K: before: 18.64s after: 18.44s Differential Revision: https://phab.mercurial-scm.org/D3440

Yuya Nishihara - - Load All Authors

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             bdiffbuild.py
        
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      from __future__ import absolute_import

      import cffi

      import os

      ffi = cffi.FFI()

      with open(os.path.join(os.path.join(os.path.dirname(__file__), '..'),

                             'bdiff.c')) as f:

          ffi.set_source("mercurial.cffi._bdiff",

                         f.read(), include_dirs=['mercurial'])

      ffi.cdef("""

      struct bdiff_line {

          int hash, n, e;

          ssize_t len;

          const char *l;

      };

      struct bdiff_hunk;

      struct bdiff_hunk {

          int a1, a2, b1, b2;

          struct bdiff_hunk *next;

      };

      int bdiff_splitlines(const char *a, ssize_t len, struct bdiff_line **lr);

      int bdiff_diff(struct bdiff_line *a, int an, struct bdiff_line *b, int bn,

          struct bdiff_hunk *base);

      void bdiff_freehunks(struct bdiff_hunk *l);

      void free(void*);

      """)

      if __name__ == '__main__':

          ffi.compile()

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				from __future__ import absolute_import

				import cffi
				import os

				ffi = cffi.FFI()
				with open(os.path.join(os.path.join(os.path.dirname(__file__), '..'),
				'bdiff.c')) as f:
				ffi.set_source("mercurial.cffi._bdiff",
				f.read(), include_dirs=['mercurial'])
				ffi.cdef("""
				struct bdiff_line {
				int hash, n, e;
				ssize_t len;
				const char *l;
				};

				struct bdiff_hunk;
				struct bdiff_hunk {
				int a1, a2, b1, b2;
				struct bdiff_hunk *next;
				};

				int bdiff_splitlines(const char a, ssize_t len, struct bdiff_line *lr);
				int bdiff_diff(struct bdiff_line a, int an, struct bdiff_line b, int bn,
				struct bdiff_hunk *base);
				void bdiff_freehunks(struct bdiff_hunk *l);
				void free(void*);
				""")

				if __name__ == '__main__':
				ffi.compile()