--- IO-AIO/AIO.xs 2011/09/27 02:16:49 1.198 +++ IO-AIO/AIO.xs 2012/04/06 11:39:25 1.210 @@ -21,6 +21,14 @@ # include #endif +#if __linux__ +# include +# ifdef FS_IOC_FIEMAP +# include +# define HAVE_FIEMAP 1 +# endif +#endif + /* perl namespace pollution */ #undef VERSION @@ -64,6 +72,9 @@ #undef abort #undef pipe + #define EIO_STRUCT_STAT struct _stati64 + #define EIO_STRUCT_STATI64 + #else #include @@ -72,19 +83,8 @@ #include #include -#endif - -#define EIO_STRUCT_STAT Stat_t + #define EIO_STRUCT_STAT Stat_t -/* use NV for 32 bit perls as it allows larger offsets */ -#if IVSIZE >= 8 -# define VAL64 IV -# define SvVAL64 SvIV -# define newSVval64 newSViv -#else -# define VAL64 NV -# define SvVAL64 SvNV -# define newSVval64 newSVnv #endif /*****************************************************************************/ @@ -125,170 +125,14 @@ #include "libeio/eio.c" -/* Linux/others */ -#ifndef O_ASYNC -# define O_ASYNC 0 -#endif -#ifndef O_DIRECT -# define O_DIRECT 0 -#endif -#ifndef O_NOATIME -# define O_NOATIME 0 -#endif - -/* POSIX */ -#ifndef O_CLOEXEC -# define O_CLOEXEC 0 -#endif -#ifndef O_NOFOLLOW -# define O_NOFOLLOW 0 -#endif -#ifndef O_NOCTTY -# define O_NOCTTY 0 -#endif -#ifndef O_NONBLOCK -# define O_NONBLOCK 0 -#endif -#ifndef O_EXEC -# define O_EXEC 0 -#endif -#ifndef O_SEARCH -# define O_SEARCH 0 -#endif -#ifndef O_DIRECTORY -# define O_DIRECTORY 0 -#endif -#ifndef O_DSYNC -# define O_DSYNC 0 -#endif -#ifndef O_RSYNC -# define O_RSYNC 0 -#endif -#ifndef O_SYNC -# define O_SYNC 0 -#endif -#ifndef O_TTY_INIT -# define O_TTY_INIT 0 -#endif - -#ifndef POSIX_FADV_NORMAL -# define POSIX_FADV_NORMAL 0 -#endif -#ifndef POSIX_FADV_SEQUENTIAL -# define POSIX_FADV_SEQUENTIAL 0 -#endif -#ifndef POSIX_FADV_RANDOM -# define POSIX_FADV_RANDOM 0 -#endif -#ifndef POSIX_FADV_NOREUSE -# define POSIX_FADV_NOREUSE 0 -#endif -#ifndef POSIX_FADV_WILLNEED -# define POSIX_FADV_WILLNEED 0 -#endif -#ifndef POSIX_FADV_DONTNEED -# define POSIX_FADV_DONTNEED 0 -#endif - #if !HAVE_POSIX_FADVISE # define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */ #endif -#ifndef POSIX_MADV_NORMAL -# define POSIX_MADV_NORMAL 0 -#endif -#ifndef POSIX_MADV_SEQUENTIAL -# define POSIX_MADV_SEQUENTIAL 0 -#endif -#ifndef POSIX_MADV_RANDOM -# define POSIX_MADV_RANDOM 0 -#endif -#ifndef POSIX_MADV_WILLNEED -# define POSIX_MADV_WILLNEED 0 -#endif -#ifndef POSIX_MADV_DONTNEED -# define POSIX_MADV_DONTNEED 0 -#endif - #if !HAVE_POSIX_MADVISE # define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */ #endif -#ifndef PROT_NONE -# define PROT_NONE 0 -#endif -#ifndef PROT_READ -# define PROT_READ 0 -#endif -#ifndef PROT_WRITE -# define PROT_READ 0 -#endif -#ifndef PROT_EXEC -# define PROT_EXEC 0 -#endif - -#ifndef ST_RDONLY -# define ST_RDONLY 0 -#endif -#ifndef ST_NOSUID -# define ST_NOSUID 0 -#endif -#ifndef ST_NODEV -# define ST_NODEV 0 -#endif -#ifndef ST_NOEXEC -# define ST_NOEXEC 0 -#endif -#ifndef ST_SYNCHRONOUS -# define ST_SYNCHRONOUS 0 -#endif -#ifndef ST_MANDLOCK -# define ST_MANDLOCK 0 -#endif -#ifndef ST_WRITE -# define ST_WRITE 0 -#endif -#ifndef ST_APPEND -# define ST_APPEND 0 -#endif -#ifndef ST_IMMUTABLE -# define ST_IMMUTABLE 0 -#endif -#ifndef ST_NOATIME -# define ST_NOATIME 0 -#endif -#ifndef ST_NODIRATIME -# define ST_NODIRATIME 0 -#endif -#ifndef ST_RELATIME -# define ST_RELATIME 0 -#endif - -#ifndef S_IFIFO -# define S_IFIFO 0 -#endif -#ifndef S_IFCHR -# define S_IFCHR 0 -#endif -#ifndef S_IFBLK -# define S_IFBLK 0 -#endif -#ifndef S_IFLNK -# define S_IFLNK 0 -#endif -#ifndef S_IFREG -# define S_IFREG 0 -#endif -#ifndef S_IFDIR -# define S_IFDIR 0 -#endif -#ifndef S_IFWHT -# define S_IFWHT 0 -#endif -#ifndef S_IFSOCK -# define S_IFSOCK 0 -#endif - #ifndef MAP_ANONYMOUS # ifdef MAP_ANON # define MAP_ANONYMOUS MAP_ANON @@ -296,21 +140,9 @@ # define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */ # endif #endif -#ifndef MAP_HUGETLB -# define MAP_HUGETLB 0 -#endif -#ifndef MAP_LOCKED -# define MAP_LOCKED 0 -#endif -#ifndef MAP_NORESERVE -# define MAP_NORESERVE 0 -#endif -#ifndef MAP_POPULATE -# define MAP_POPULATE 0 -#endif -#ifndef MAP_NONBLOCK -# define MAP_NONBLOCK 0 -#endif + +/* defines all sorts of constants to 0 unless they are already defined */ +#include "def0.h" #ifndef makedev # define makedev(maj,min) (((maj) << 8) | (min)) @@ -326,6 +158,67 @@ # define PAGESIZE sysconf (_SC_PAGESIZE) #endif +/*****************************************************************************/ + +static void +fiemap (eio_req *req) +{ + req->result = -1; + +#if HAVE_FIEMAP + for (;;) + { + int count = req->int3; + + if (count < 0) + { + struct fiemap fiemap; + + fiemap.fm_start = req->offs; + fiemap.fm_length = req->size; + fiemap.fm_flags = req->int2; + fiemap.fm_extent_count = 0; + + if (ioctl (req->int1, FS_IOC_FIEMAP, &fiemap)) + return; + + count = fiemap.fm_mapped_extents; + } + + struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count); + errno = ENOMEM; + if (!fiemap) + return; + + req->ptr1 = fiemap; + req->flags |= EIO_FLAG_PTR1_FREE; + + fiemap->fm_start = req->offs; + fiemap->fm_length = req->size; + fiemap->fm_flags = req->int2; + fiemap->fm_extent_count = count; + + if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap)) + return; + + if (req->int3 >= 0) + break; /* when not autosizing we are done */ + + if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST) + break; /* autosizing successful, we are done */ + + free (fiemap); + } + + req->result = 0; + +#else + errno = ENOSYS; +#endif +} + +/*****************************************************************************/ + enum { FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */ }; @@ -343,20 +236,23 @@ static void req_destroy (aio_req req); static void req_cancel (aio_req req); -static void want_poll (void) +static void +want_poll (void) { /* write a dummy byte to the pipe so fh becomes ready */ s_epipe_signal (&respipe); } -static void done_poll (void) +static void +done_poll (void) { /* read any signals sent by the worker threads */ s_epipe_drain (&respipe); } /* must be called at most once */ -static SV *req_sv (aio_req req, HV *stash) +static SV * +req_sv (aio_req req, HV *stash) { if (!req->self) { @@ -370,14 +266,16 @@ static SV * newSVaio_wd (aio_wd wd) { - return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash); + return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash); } -static aio_req SvAIO_REQ (SV *sv) +static aio_req +SvAIO_REQ (SV *sv) { MAGIC *mg; if (!SvROK (sv) + /* for speed reasons, we do not verify that SvROK actually has a stash ptr */ || (SvSTASH (SvRV (sv)) != aio_grp_stash && SvSTASH (SvRV (sv)) != aio_req_stash && !sv_derived_from (sv, "IO::AIO::REQ"))) @@ -388,17 +286,19 @@ return mg ? (aio_req)mg->mg_ptr : 0; } -static aio_wd SvAIO_WD (SV *sv) +static aio_wd +SvAIO_WD (SV *sv) { if (!SvROK (sv) - || SvSTASH (SvRV (sv)) != aio_wd_stash - || SvTYPE (SvRV (sv)) != SVt_PVMG) + || SvTYPE (SvRV (sv)) != SVt_PVMG + || SvSTASH (SvRV (sv)) != aio_wd_stash) croak ("IO::AIO: expected a working directory object as returned by aio_wd"); return (aio_wd)(long)SvIVX (SvRV (sv)); } -static void aio_grp_feed (aio_req grp) +static void +aio_grp_feed (aio_req grp) { if (grp->sv2 && SvOK (grp->sv2)) { @@ -416,7 +316,8 @@ } } -static void req_submit (eio_req *req) +static void +req_submit (eio_req *req) { eio_submit (req); @@ -433,7 +334,8 @@ } } -static int req_invoke (eio_req *req) +static int +req_invoke (eio_req *req) { if (req->flags & FLAG_SV2_RO_OFF) SvREADONLY_off (req->sv2); @@ -465,7 +367,7 @@ switch (req->type) { case EIO_WD_OPEN: - PUSHs (sv_2mortal (newSVaio_wd (req->wd))); + PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd))); break; case EIO_READDIR: @@ -628,6 +530,10 @@ PUSHs (sv_result); break; + case EIO_SEEK: + PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs))); + break; + case EIO_READ: { SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0)); @@ -638,6 +544,44 @@ } break; + case EIO_CUSTOM: + if (req->feed == fiemap) + { + if (!req->result) + { + struct fiemap *fiemap = (struct fiemap *)req->ptr1; + + if (fiemap->fm_extent_count) + { + AV *av = newAV (); + int i; + + while (fiemap->fm_mapped_extents) + { + struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents]; + AV *ext_av = newAV (); + + av_store (ext_av, 3, newSVuv (extent->fe_flags)); + av_store (ext_av, 2, newSVval64 (extent->fe_length)); + av_store (ext_av, 1, newSVval64 (extent->fe_physical)); + av_store (ext_av, 0, newSVval64 (extent->fe_logical)); + + av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av)); + } + + PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); + } + else + { + SvIV_set (sv_result, fiemap->fm_mapped_extents); + PUSHs (sv_result); + } + } + } + else + PUSHs (sv_result); + break; + case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */ if (req->result > 0) SvIV_set (sv_result, 0); @@ -668,7 +612,8 @@ return !!SvTRUE (ERRSV); } -static void req_destroy (aio_req req) +static void +req_destroy (aio_req req) { if (req->self) { @@ -682,10 +627,11 @@ SvREFCNT_dec (req->sv4); SvREFCNT_dec (req->callback); - Safefree (req); + free (req); } -static void req_cancel_subs (aio_req grp) +static void +req_cancel_subs (aio_req grp) { if (grp->type != EIO_GROUP) return; @@ -696,13 +642,15 @@ eio_grp_cancel (grp); } -static void create_respipe (void) +static void ecb_cold +create_respipe (void) { if (s_epipe_renew (&respipe)) croak ("IO::AIO: unable to initialize result pipe"); } -static void poll_wait (void) +static void +poll_wait (void) { while (eio_nreqs ()) { @@ -721,7 +669,8 @@ } } -static int poll_cb (void) +static int +poll_cb (void) { for (;;) { @@ -764,7 +713,8 @@ #define MMAP_MAGIC PERL_MAGIC_ext -static int mmap_free (pTHX_ SV *sv, MAGIC *mg) +static int ecb_cold +mmap_free (pTHX_ SV *sv, MAGIC *mg) { int old_errno = errno; munmap (mg->mg_ptr, (size_t)mg->mg_obj); @@ -790,26 +740,35 @@ /*****************************************************************************/ -static SV * get_cb (SV *cb_sv) +static SV * +get_cb (SV *cb_sv) { SvGETMAGIC (cb_sv); return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0; } +static aio_req ecb_noinline +dreq (SV *callback) +{ + SV *cb_cv; + aio_req req; + int req_pri = next_pri; + next_pri = EIO_PRI_DEFAULT; + + cb_cv = get_cb (callback); + + req = calloc (sizeof (*req), 1); + if (!req) + croak ("out of memory during eio_req allocation"); + + req->callback = SvREFCNT_inc (cb_cv); + req->pri = req_pri; + + return req; +} + #define dREQ \ - SV *cb_cv; \ - aio_req req; \ - int req_pri = next_pri; \ - next_pri = EIO_PRI_DEFAULT; \ - \ - cb_cv = get_cb (callback); \ - \ - Newz (0, req, 1, eio_req); \ - if (!req) \ - croak ("out of memory during eio_req allocation"); \ - \ - req->callback = SvREFCNT_inc (cb_cv); \ - req->pri = req_pri + aio_req req = dreq (callback); \ #define REQ_SEND \ PUTBACK; \ @@ -819,40 +778,49 @@ if (GIMME_V != G_VOID) \ XPUSHs (req_sv (req, aio_req_stash)); -static void +ecb_inline void req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr) { if (expect_false (SvROK (path))) { - AV *av = (AV *)SvRV (path); + SV *rv = SvRV (path); SV *wdob; - if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1) - croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs"); - - path = AvARRAY (av)[1]; - wdob = AvARRAY (av)[0]; + if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1) + { + path = AvARRAY (rv)[1]; + wdob = AvARRAY (rv)[0]; - if (SvOK (wdob)) + if (SvOK (wdob)) + { + *wd = SvAIO_WD (wdob); + *wdsv = SvREFCNT_inc_NN (SvRV (wdob)); + } + else + *wd = EIO_INVALID_WD; + } + else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash) { - *wd = SvAIO_WD (wdob); - *wdsv = SvREFCNT_inc_NN (SvRV (wdob)); + *wd = (aio_wd)(long)SvIVX (rv); + *wdsv = SvREFCNT_inc_NN (rv); + *ptr = "."; + return; /* path set to "." */ } else - *wd = EIO_INVALID_WD; + croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair"); } *pathsv = newSVsv (path); *ptr = SvPVbyte_nolen (*pathsv); } -static void +static void ecb_noinline req_set_path1 (aio_req req, SV *path) { req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1); } -static void +static void ecb_noinline req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path) { SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path; @@ -872,9 +840,10 @@ req_set_path1 (req, fh_or_path); break; } - } +XS(boot_IO__AIO) ecb_cold; + MODULE = IO::AIO PACKAGE = IO::AIO PROTOTYPES: ENABLE @@ -888,8 +857,13 @@ # define const_niv(name, value) { # name, (IV) value }, # define const_iv(name) { # name, (IV) name }, # define const_eio(name) { # name, (IV) EIO_ ## name }, - const_iv (EXDEV) + + /* you have to re-run ./gendef0 after adding/Removing any constants here */ + const_iv (ENOSYS) + const_iv (EXDEV) + const_iv (EBADR) + const_iv (O_RDONLY) const_iv (O_WRONLY) const_iv (O_RDWR) @@ -967,6 +941,25 @@ const_iv (MAP_POPULATE) const_iv (MAP_NONBLOCK) + const_iv (FIEMAP_FLAG_SYNC) + const_iv (FIEMAP_FLAG_XATTR) + const_iv (FIEMAP_FLAGS_COMPAT) + const_iv (FIEMAP_EXTENT_LAST) + const_iv (FIEMAP_EXTENT_UNKNOWN) + const_iv (FIEMAP_EXTENT_DELALLOC) + const_iv (FIEMAP_EXTENT_ENCODED) + const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED) + const_iv (FIEMAP_EXTENT_NOT_ALIGNED) + const_iv (FIEMAP_EXTENT_DATA_INLINE) + const_iv (FIEMAP_EXTENT_DATA_TAIL) + const_iv (FIEMAP_EXTENT_UNWRITTEN) + const_iv (FIEMAP_EXTENT_MERGED) + const_iv (FIEMAP_EXTENT_SHARED) + + const_eio (SEEK_SET) + const_eio (SEEK_CUR) + const_eio (SEEK_END) + const_eio (MCL_FUTURE) const_eio (MCL_CURRENT) @@ -1098,7 +1091,7 @@ req->sv1 = newSVsv (fh); req->int1 = fd; - REQ_SEND (req); + REQ_SEND; } void @@ -1115,7 +1108,7 @@ req->size = nbytes; req->int2 = flags; - REQ_SEND (req); + REQ_SEND; } void @@ -1132,7 +1125,7 @@ req->offs = offset; req->size = len; - REQ_SEND (req); + REQ_SEND; } void @@ -1166,7 +1159,24 @@ req->sv2 = newSVsv (fh); req->int2 = fd; - REQ_SEND (req); + REQ_SEND; +} + +void +aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef) + PPCODE: +{ + STRLEN svlen; + int fd = s_fileno_croak (fh, 0); + dREQ; + + req->type = EIO_SEEK; + req->sv1 = newSVsv (fh); + req->int1 = fd; + req->offs = SvVAL64 (offset); + req->int2 = whence; + + REQ_SEND; } void @@ -1282,8 +1292,8 @@ { dREQ; - req->sv1 = newSVsv (fh_or_path); req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path); + REQ_SEND; } @@ -1330,9 +1340,6 @@ void aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef) - ALIAS: - aio_chmod = EIO_CHMOD - aio_mkdir = EIO_MKDIR PPCODE: { dREQ; @@ -1374,6 +1381,19 @@ } void +aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef) + PPCODE: +{ + dREQ; + + req->type = EIO_MKDIR; + req->int2 = mode; + req_set_path1 (req, pathname); + + REQ_SEND; +} + +void aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef) ALIAS: aio_unlink = EIO_UNLINK @@ -1397,8 +1417,8 @@ aio_rename = EIO_RENAME PPCODE: { + eio_wd wd2 = 0; dREQ; - eio_wd wd2; req->type = ix; req_set_path1 (req, oldpath); @@ -1497,6 +1517,27 @@ } void +aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef) + PPCODE: +{ + int fd = s_fileno_croak (fh, 0); + dREQ; + + req->type = EIO_CUSTOM; + req->sv1 = newSVsv (fh); + req->int1 = fd; + + req->feed = fiemap; + /* keep our fingers crossed that the next two types are 64 bit */ + req->offs = start; + req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL; + req->int2 = flags; + req->int3 = SvOK (count) ? SvIV (count) : -1; + + REQ_SEND; +} + +void aio_busy (double delay, SV *callback=&PL_sv_undef) PPCODE: { @@ -1763,11 +1804,15 @@ { aio_wd wd = SvAIO_WD (self); #if HAVE_AT - SV *callback = &PL_sv_undef; - dREQ; /* clobbers next_pri :/ */ - req->type = EIO_WD_CLOSE; - req->wd = wd; - REQ_SEND; + { + SV *callback = &PL_sv_undef; + dREQ; /* clobbers next_pri :/ */ + next_pri = req->pri; /* restore next_pri */ + req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */ + req->type = EIO_WD_CLOSE; + req->wd = wd; + REQ_SEND; + } #else eio_wd_close_sync (wd); #endif