mercurial/cffi/mpatchbuild.py

run-tests: print number of tests and parallel process count

This seems like a useful output message to have.

I also sneak in a change to lower the parallel process count if it
is larger than the number of tests, as that makes no sense and output
saying we're running more tests in parallel than there exists tests would
be wonky.

Differential Revision: https://phab.mercurial-scm.org/D5070

from __future__ import absolute_import

import cffi
import os

ffi = cffi.FFI()
mpatch_c = os.path.join(os.path.join(os.path.dirname(__file__), '..',
                                     'mpatch.c'))
with open(mpatch_c) as f:
    ffi.set_source("mercurial.cffi._mpatch", f.read(),
                   include_dirs=["mercurial"])
ffi.cdef("""

struct mpatch_frag {
       int start, end, len;
       const char *data;
};

struct mpatch_flist {
       struct mpatch_frag *base, *head, *tail;
};

extern "Python" struct mpatch_flist* cffi_get_next_item(void*, ssize_t);

int mpatch_decode(const char *bin, ssize_t len, struct mpatch_flist** res);
ssize_t mpatch_calcsize(size_t len, struct mpatch_flist *l);
void mpatch_lfree(struct mpatch_flist *a);
static int mpatch_apply(char *buf, const char *orig, size_t len,
                        struct mpatch_flist *l);
struct mpatch_flist *mpatch_fold(void *bins,
                       struct mpatch_flist* (*get_next_item)(void*, ssize_t),
                       ssize_t start, ssize_t end);
""")

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