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author | Roland McGrath <roland@gnu.org> | 2002-08-02 01:27:53 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 2002-08-02 01:27:53 +0000 |
commit | e42637b67781ed47a1581c6062421de514560cb3 (patch) | |
tree | 357b08520e6b39410be8266299d4657a98c10dad /libio/fileops.c | |
parent | 0950889b810736fe7ad340a13a5ecf76672e1a84 (diff) | |
download | glibc-e42637b67781ed47a1581c6062421de514560cb3.tar.gz glibc-e42637b67781ed47a1581c6062421de514560cb3.tar.xz glibc-e42637b67781ed47a1581c6062421de514560cb3.zip |
2002-07-31 Roland McGrath <roland@frob.com>
* libio/fileops.c (decide_maybe_mmap): New static function. Code taken from libio/iofopen.c:__fopen_maybe_mmap to try to mmap the file contents. Then switch the jump tables to the mmap tables if it worked, or the vanilla file tables if not. (_IO_file_underflow_maybe_mmap): New function. (_IO_file_seekoff_maybe_mmap): New function. (_IO_file_xsgetn_maybe_mmap): New function. (_IO_file_jumps_maybe_mmap): New variable, jump table using those. * libio/libioP.h: Declare those. * libio/wfileops.c (_IO_wfile_underflow_maybe_mmap): New function. (_IO_wfile_jumps_maybe_mmap): New variable, jump table using that. * libio/iofopen.c (__fopen_maybe_mmap): Don't try to mmap here. If the stream is read-only, set its jump tables to those new ones. * libio/iofdopen.c (_IO_new_fdopen) [_G_HAVE_MMAP]: Set the initial jump tables to the maybe_mmap ones, and don't call __fopen_maybe_mmap. We need the tables set before _IO_file_attach.
Diffstat (limited to 'libio/fileops.c')
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