Linux Manuals session 3

libdlm – dlm_get_fd, dlm_dispatch, dlm_pthread_init, dlm_ls_pthread_init, dlm_cleanup Synopsis#include <libdlm.h> int dlm_pthread_init(); int dlm_ls_pthread_init(dlm_lshandle_t lockspace); int dlm_pthread_cleanup(); int dlm_get_fd(void); int dlm_dispatch(int fd); link with -ldlmDescriptionlibdlm provides the programmatic userspace interface to the Distributed Lock manager. It provides all the calls you need to manipulate locks & lockspaces libdlm can be used in pthread or non-pthread applications….

libdlm – dlm_get_fd, dlm_dispatch, dlm_pthread_init, dlm_ls_pthread_init, dlm_cleanup Synopsis#include <libdlm.h> int dlm_pthread_init(); int dlm_ls_pthread_init(dlm_lshandle_t lockspace); int dlm_pthread_cleanup(); int dlm_get_fd(void); int dlm_dispatch(int fd); link with -ldlmDescriptionlibdlm provides the programmatic userspace interface to the Distributed Lock manager. It provides all the calls you need to manipulate locks & lockspaces libdlm can be used in pthread or non-pthread applications….

dlm_create_lockspace, dlm_open_lockspace, dlm_close_lockspace, dlm_release_lockspace – manipulate DLM lockspaces Synopsis #include <libdlm.h> dlm_lshandle_t dlm_create_lockspace(const char *name, mode_t mode); dlm_lshandle_t dlm_new_lockspace(const char *name, mode_t mode, uint32_t flags); dlm_lshandle_t dlm_open_lockspace(const char *name); int dlm_close_lockspace(dlm_lshandle_t ls); int dlm_release_lockspace(const char *name, dlm_lshandle_t ls, int force);DescriptionThe DLM allows locks to be partitioned into "lockspaces", and these can be manipulated by userspace…

dlm_create_lockspace, dlm_open_lockspace, dlm_close_lockspace, dlm_release_lockspace – manipulate DLM lockspaces Synopsis #include <libdlm.h> dlm_lshandle_t dlm_create_lockspace(const char *name, mode_t mode); dlm_lshandle_t dlm_new_lockspace(const char *name, mode_t mode, uint32_t flags); dlm_lshandle_t dlm_open_lockspace(const char *name); int dlm_close_lockspace(dlm_lshandle_t ls); int dlm_release_lockspace(const char *name, dlm_lshandle_t ls, int force);DescriptionThe DLM allows locks to be partitioned into "lockspaces", and these can be manipulated by userspace…

libdlm – dlm_get_fd, dlm_dispatch, dlm_pthread_init, dlm_ls_pthread_init, dlm_cleanup Synopsis#include <libdlm.h> int dlm_pthread_init(); int dlm_ls_pthread_init(dlm_lshandle_t lockspace); int dlm_pthread_cleanup(); int dlm_get_fd(void); int dlm_dispatch(int fd); link with -ldlmDescriptionlibdlm provides the programmatic userspace interface to the Distributed Lock manager. It provides all the calls you need to manipulate locks & lockspaces libdlm can be used in pthread or non-pthread applications….

dlinfo – obtain information about a dynamically loaded object Synopsis#define _GNU_SOURCE #include <link.h> #include <dlfcn.h> int dlinfo(void *handle, int request, void *info); Link with -ldl.DescriptionThe dlinfo() function obtains information about the dynamically loaded object referred to by handle (typically obtained by an earlier call to dlopen(3) or dlmopen(3)). The request argument specifies which information is…

dlerror – obtain error diagnostic for functions in the dlopen API Synopsis#include <dlfcn.h> char *dlerror(void); Link with -ldl. DescriptionThe dlerror() function returns a human-readable, null-terminated string describing the most recent error that occurred from a call to one of the functions in the dlopen API since the last call to dlerror(). The returned string does…

dlclose, dlopen, dlmopen – open and close a shared object Synopsis#include <dlfcn.h> void *dlopen(const char *filename, int flags); int dlclose(void *handle); #define _GNU_SOURCE #include <dlfcn.h> void *dlmopen(Lmid_t lmid, const char *filename, int flags); Link with -ldl. Descriptiondlopen()The function dlopen() loads the dynamic shared object (shared library) file named by the null-terminated string filename and returns…

dlauum.f – SynopsisFunctions/Subroutinessubroutine dlauum (UPLO, N, A, LDA, INFO) DLAUUM computes the product UUH or LHL, where U and L are upper or lower triangular matrices (blocked algorithm). Function/Subroutine Documentationsubroutine dlauum (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, integerINFO)DLAUUM computes the product UUH or LHL, where U and L are upper or lower…

dlauu2.f – SynopsisFunctions/Subroutinessubroutine dlauu2 (UPLO, N, A, LDA, INFO) DLAUU2 computes the product UUH or LHL, where U and L are upper or lower triangular matrices (unblocked algorithm). Function/Subroutine Documentationsubroutine dlauu2 (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, integerINFO)DLAUU2 computes the product UUH or LHL, where U and L are upper or lower…

dlatzm.f – SynopsisFunctions/Subroutinessubroutine dlatzm (SIDE, M, N, V, INCV, TAU, C1, C2, LDC, WORK) DLATZM Function/Subroutine Documentationsubroutine dlatzm (characterSIDE, integerM, integerN, double precision, dimension( * )V, integerINCV, double precisionTAU, double precision, dimension( ldc, * )C1, double precision, dimension( ldc, * )C2, integerLDC, double precision, dimension( * )WORK)DLATZM Purpose: This routine is deprecated and has been…

dlatrz.f – SynopsisFunctions/Subroutinessubroutine dlatrz (M, N, L, A, LDA, TAU, WORK) DLATRZ factors an upper trapezoidal matrix by means of orthogonal transformations. Function/Subroutine Documentationsubroutine dlatrz (integerM, integerN, integerL, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )TAU, double precision, dimension( * )WORK)DLATRZ factors an upper trapezoidal matrix by means of orthogonal transformations….

dlatrs.f – SynopsisFunctions/Subroutinessubroutine dlatrs (UPLO, TRANS, DIAG, NORMIN, N, A, LDA, X, SCALE, CNORM, INFO) DLATRS solves a triangular system of equations with the scale factor set to prevent overflow. Function/Subroutine Documentationsubroutine dlatrs (characterUPLO, characterTRANS, characterDIAG, characterNORMIN, integerN, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )X, double precisionSCALE, double precision, dimension(…

dlatrd.f – SynopsisFunctions/Subroutinessubroutine dlatrd (UPLO, N, NB, A, LDA, E, TAU, W, LDW) DLATRD reduces the first nb rows and columns of a symmetric/Hermitian matrix A to real tridiagonal form by an orthogonal similarity transformation. Function/Subroutine Documentationsubroutine dlatrd (characterUPLO, integerN, integerNB, double precision, dimension( lda, * )A, integerLDA, double precision, dimension( * )E, double precision,…

dlatps.f – SynopsisFunctions/Subroutinessubroutine dlatps (UPLO, TRANS, DIAG, NORMIN, N, AP, X, SCALE, CNORM, INFO) DLATPS solves a triangular system of equations with the matrix held in packed storage. Function/Subroutine Documentationsubroutine dlatps (characterUPLO, characterTRANS, characterDIAG, characterNORMIN, integerN, double precision, dimension( * )AP, double precision, dimension( * )X, double precisionSCALE, double precision, dimension( * )CNORM, integerINFO)DLATPS solves…

dlatdf.f – SynopsisFunctions/Subroutinessubroutine dlatdf (IJOB, N, Z, LDZ, RHS, RDSUM, RDSCAL, IPIV, JPIV) DLATDF uses the LU factorization of the n-by-n matrix computed by sgetc2 and computes a contribution to the reciprocal Dif-estimate. Function/Subroutine Documentationsubroutine dlatdf (integerIJOB, integerN, double precision, dimension( ldz, * )Z, integerLDZ, double precision, dimension( * )RHS, double precisionRDSUM, double precisionRDSCAL, integer,…

dlatbs.f – SynopsisFunctions/Subroutinessubroutine dlatbs (UPLO, TRANS, DIAG, NORMIN, N, KD, AB, LDAB, X, SCALE, CNORM, INFO) DLATBS solves a triangular banded system of equations. Function/Subroutine Documentationsubroutine dlatbs (characterUPLO, characterTRANS, characterDIAG, characterNORMIN, integerN, integerKD, double precision, dimension( ldab, * )AB, integerLDAB, double precision, dimension( * )X, double precisionSCALE, double precision, dimension( * )CNORM, integerINFO)DLATBS solves a…

dlat2s.f – SynopsisFunctions/Subroutinessubroutine dlat2s (UPLO, N, A, LDA, SA, LDSA, INFO) DLAT2S converts a double-precision triangular matrix to a single-precision triangular matrix. Function/Subroutine Documentationsubroutine dlat2s (characterUPLO, integerN, double precision, dimension( lda, * )A, integerLDA, real, dimension( ldsa, * )SA, integerLDSA, integerINFO)DLAT2S converts a double-precision triangular matrix to a single-precision triangular matrix. Purpose: DLAT2S converts a…

dlasyf_rook.f – SynopsisFunctions/Subroutinessubroutine dlasyf_rook (UPLO, N, NB, KB, A, LDA, IPIV, W, LDW, INFO) DLASYF_ROOK *> DLASYF_ROOK computes a partial factorization of a real symmetric matrix using the bounded Bunch-Kaufman (‘rook’) diagonal pivoting method. Function/Subroutine Documentationsubroutine dlasyf_rook (characterUPLO, integerN, integerNB, integerKB, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, double precision, dimension(…

dlasyf.f – SynopsisFunctions/Subroutinessubroutine dlasyf (UPLO, N, NB, KB, A, LDA, IPIV, W, LDW, INFO) DLASYF computes a partial factorization of a real symmetric matrix, using the diagonal pivoting method. Function/Subroutine Documentationsubroutine dlasyf (characterUPLO, integerN, integerNB, integerKB, double precision, dimension( lda, * )A, integerLDA, integer, dimension( * )IPIV, double precision, dimension( ldw, * )W, integerLDW, integerINFO)DLASYF…