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/* |
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* This software is copyright (c) 2008, 2009 by Leon Timmermans . |
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* |
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* This is free software; you can redistribute it and/or modify it under |
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* the same terms as perl itself. |
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* |
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*/ |
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#if defined linux || defined solaris || (defined (__SVR4) && defined (__sun)) |
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#define OS_LINUX |
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#elif defined __FreeBSD__ || defined __FreeBSD_kernel__ |
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#define OS_BSD |
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#elif defined __APPLE__ |
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#define OS_X |
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#elif defined _WIN32 |
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#define OS_WIN32 |
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#else |
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#define OS_FALLBACK |
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#endif |
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#if defined OS_LINUX |
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#include |
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#elif defined OS_BSD || defined OS_X |
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#include |
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#include |
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#include |
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#elif defined OS_WIN32 |
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#include |
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#ifndef _MSC_VER |
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#include |
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#endif |
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#else |
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#include |
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#endif |
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#ifndef _MSC_VER |
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#include |
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#ifndef MAP_FILE |
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#define MAP_FILE 0 |
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#endif |
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#endif |
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#define PERL_NO_GET_CONTEXT |
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#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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#define PERL_VERSION_ATLEAST(a,b,c) \ |
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(PERL_VERSION > (b) \ |
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|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c))) |
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#if defined(USE_SOCKETS_AS_HANDLES) || PERL_VERSION_ATLEAST(5,17,5) |
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# define TO_SOCKET(x) _get_osfhandle(x) |
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#else |
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# define TO_SOCKET(x) (x) |
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#endif /* USE_SOCKETS_AS_HANDLES */ |
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#define undef &PL_sv_undef |
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MODULE = Sys::Sendfile PACKAGE = Sys::Sendfile |
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SV* |
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sendfile(out, in, count = undef, offset = undef) |
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int out = PerlIO_fileno(IoOFP(sv_2io(ST(0)))); |
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int in = PerlIO_fileno(IoIFP(sv_2io(ST(1)))); |
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SV* count; |
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SV* offset; |
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PROTOTYPE: **@ |
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CODE: |
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{ |
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2
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Off_t real_offset = SvOK(offset) ? SvUV(offset) : (off_t)lseek(in, 0, SEEK_CUR); |
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0
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2
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100
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Off_t real_count = SvOK(count) ? SvUV(count) : 0u; |
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#if defined(OS_BSD) || defined(OS_X) |
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if (SvOK(count) && real_count == 0) |
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XSRETURN_IV(0); |
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#else |
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2
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100
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if (!SvOK(count)) { |
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struct stat info; |
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1
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if (fstat(in, &info) == -1) |
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0
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XSRETURN_EMPTY; |
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1
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real_count = info.st_size - real_offset; |
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} |
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#endif |
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#if defined OS_LINUX |
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{ |
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2
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ssize_t success = sendfile(out, in, &real_offset, real_count); |
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2
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if (success == -1) |
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0
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XSRETURN_EMPTY; |
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else |
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2
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XSRETURN_IV(success); |
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} |
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#elif defined OS_BSD |
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off_t bytes; |
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int ret = sendfile(in, out, real_offset, real_count, NULL, &bytes, 0); |
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if (ret == -1 && bytes == 0 && ! (errno == EAGAIN || errno == EINTR)) |
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XSRETURN_EMPTY; |
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else |
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XSRETURN_IV(bytes); |
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#elif defined OS_X |
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off_t bytes = real_count; |
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int ret = sendfile(in, out, real_offset, &bytes, NULL, 0); |
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if (ret == -1 && bytes == 0 && ! (errno == EAGAIN || errno == EINTR)) |
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XSRETURN_EMPTY; |
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else |
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XSRETURN_IV(bytes); |
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#elif defined OS_WIN32 |
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HANDLE hFile = TO_SOCKET(in); |
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int ret; |
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if (SvOK(offset)) |
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SetFilePointer(hFile, real_offset, NULL, FILE_BEGIN); |
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ret = TransmitFile(TO_SOCKET(out), hFile, (DWORD)real_count, 0, NULL, NULL, 0); |
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if (!ret) |
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XSRETURN_EMPTY; |
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else |
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XSRETURN_IV(real_count); |
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#else |
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int ret; |
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void* buffer = mmap(NULL, real_count, PROT_READ, MAP_SHARED | MAP_FILE, in, real_offset); |
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if (buffer == MAP_FAILED) |
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XSRETURN_EMPTY; |
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ret = write(out, buffer, real_count); |
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if (ret == -1) |
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XSRETURN_EMPTY; |
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else |
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XSRETURN_IV(ret); |
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#endif |
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} |