{
    "mode": "perldoc",
    "parameter": "PerlIO::mmap",
    "section": "",
    "url": "https://www.chedong.com/phpMan.php/perldoc/PerlIO%3A%3Ammap/json",
    "generated": "2026-06-03T03:38:05Z",
    "synopsis": "open my $fh, '<:mmap', $filename;",
    "sections": {
        "NAME": {
            "content": "PerlIO::mmap - Memory mapped IO\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "open my $fh, '<:mmap', $filename;\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "This layer does \"read\" and \"write\" operations by mmap()ing the file if possible, but falls back\nto the default behavior if not.\n",
            "subsections": []
        },
        "IMPLEMENTATION NOTE": {
            "content": "\"PerlIO::mmap\" only exists to use XSLoader to load C code that provides support for using memory\nmapped IO. One does not need to explicitly \"use PerlIO::mmap;\".\n",
            "subsections": []
        }
    },
    "summary": "PerlIO::mmap - Memory mapped IO",
    "flags": [],
    "examples": [],
    "see_also": []
}