From ea7af2e7fcef4cc5fd5778e1672dca7b069d95db Mon Sep 17 00:00:00 2001 From: Tushar Gohad Date: Sun, 6 Jul 2014 20:59:57 -0700 Subject: [PATCH] xor code backend implementation (WIP) Facing some nasty dlopen() issues when testing with "test/liberasurecode_test" Signed-off-by: Tushar Gohad --- Makefile.am | 21 +- configure.ac | 17 +- include/config.h | 185 ++++++++ include/config.h.in | 3 + include/config.h.in~ | 181 ++++++++ include/erasurecode/erasurecode.h | 75 +-- include/stamp-h1 | 1 + src/Makefile.am | 22 + src/Makefile.in | 735 ++++++++++++++++++++++++++++++ src/backends/xor/flat_xor_3.c | 38 +- src/builtin/xor_codes/Makefile.in | 550 ++++++++++++++++++++++ src/erasurecode.c | 238 ++++++++++ src/main.c | 104 ----- test/Makefile.am | 14 +- test/liberasurecode_test.c | 13 + 15 files changed, 2014 insertions(+), 183 deletions(-) create mode 100644 include/config.h create mode 100644 include/config.h.in~ create mode 100644 include/stamp-h1 create mode 100644 src/Makefile.am create mode 100644 src/Makefile.in create mode 100644 src/builtin/xor_codes/Makefile.in create mode 100644 src/erasurecode.c delete mode 100644 src/main.c create mode 100644 test/liberasurecode_test.c diff --git a/Makefile.am b/Makefile.am index 08df99e..216ebf0 100644 --- a/Makefile.am +++ b/Makefile.am @@ -1,7 +1,7 @@ # Top-level liberasurecode automake configuration ACLOCAL_AMFLAGS = -I m4 -SUBDIRS = src/builtin/xor_codes test +SUBDIRS = src test EXTRA_DIST = autogen.sh if DEBUG @@ -28,20 +28,6 @@ include_HEADERS = \ include/xor_codes/xor_hd_code_defs.h \ include/xor_codes/xor_code.h -lib_LTLIBRARIES = liberasurecode.la - -# liberasurecode params -liberasurecode_la_SOURCES = \ - src/main.c \ - src/backends/xor/flat_xor_3.c \ - src/utils/chksum/galois.c \ - src/utils/chksum/crc32.c \ - src/utils/chksum/alg_sig.c - -liberasurecode_la_LIBADD = src/builtin/xor_codes/libXorcode.la -lgf_complete -# Version format (C - A).(A).(R) for C:R:A input -liberasurecode_la_LDFLAGS = -rpath '$(libdir)' -version-info 9:4:9 - test: check @./test/alg_sig_test @@ -52,8 +38,9 @@ VALGRIND_EXEC_COMMAND = $(LIBTOOL_COMMAND) valgrind --tool=memcheck \ --malloc-fill=A5 --free-fill=DE --fullpath-after=. valgrind-test: check - @$(VALGRIND_EXEC_COMMAND) ./test/alg_sig_test - @$(VALGRIND_EXEC_COMMAND) ./test/test_xor_hd_code + @$(VALGRIND_EXEC_COMMAND) ./test/liberasurecode_test +# @$(VALGRIND_EXEC_COMMAND) ./test/alg_sig_test +# @$(VALGRIND_EXEC_COMMAND) ./test/test_xor_hd_code CLEANFILES = cscope.in.out cscope.out cscope.po.out diff --git a/configure.ac b/configure.ac index 72289da..2114860 100644 --- a/configure.ac +++ b/configure.ac @@ -3,7 +3,7 @@ AC_GNU_SOURCE AC_PREREQ([2.61]) -AM_INIT_AUTOMAKE([subdir-objects no-dependencies]) +AM_INIT_AUTOMAKE([subdir-objects no-dependencies silent-rules]) LT_INIT # libtool AC_CONFIG_HEADER(include/config.h) @@ -12,6 +12,7 @@ dnl Needed when reconfiguring with 'autoreconf -i -s' AC_CONFIG_MACRO_DIR([m4]) AM_MAINTAINER_MODE([disable]) +AM_SILENT_RULES([yes]) dnl Compiling with per-target flags requires AM_PROG_CC_C_O. AC_PROG_CC @@ -57,10 +58,14 @@ dnl Expand the sources and objects needed to build the library AC_SUBST(ac_aux_dir) AC_SUBST(OBJECTS) -AC_CONFIG_FILES([Makefile \ - src/builtin/xor_codes/Makefile \ - test/Makefile \ - erasurecode.pc \ - Xorcode.pc]) +AC_CONFIG_FILES([\ + src/builtin/xor_codes/Makefile \ + src/Makefile \ + test/Makefile \ + Makefile \ + erasurecode.pc \ + Xorcode.pc +]) + AC_OUTPUT diff --git a/include/config.h b/include/config.h new file mode 100644 index 0000000..178d787 --- /dev/null +++ b/include/config.h @@ -0,0 +1,185 @@ +/* include/config.h. Generated from config.h.in by configure. */ +/* include/config.h.in. Generated from configure.ac by autoheader. */ + +/* Support Altivec instructions */ +/* #undef HAVE_ALTIVEC */ + +/* Support AVX (Advanced Vector Extensions) instructions */ +/* #undef HAVE_AVX */ + +/* Define to 1 if you have the `calloc' function. */ +#define HAVE_CALLOC 1 + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_CAUCHY_H */ + +/* Define to 1 if you have the header file. */ +#define HAVE_CTYPE_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_DLFCN_H 1 + +/* Define to 1 if you have the `free' function. */ +#define HAVE_FREE 1 + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_GALOIS_H */ + +/* Define to 1 if you have the header file. */ +#define HAVE_GF_COMPLETE_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_ICONV_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_INTTYPES_H 1 + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_JERASURE_H */ + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_LIBERATION_H */ + +/* Define to 1 if you have the `gf_complete' library (-lgf_complete). */ +#define HAVE_LIBGF_COMPLETE 1 + +/* Define to 1 if you have the `malloc' function. */ +#define HAVE_MALLOC 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_MALLOC_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_MATH_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_MEMORY_H 1 + +/* Support mmx instructions */ +#define HAVE_MMX /**/ + +/* Define to 1 if you have the header file. */ +#define HAVE_PTHREAD_H 1 + +/* Define to 1 if you have the `realloc' function. */ +#define HAVE_REALLOC 1 + +/* Define to 1 if you have the header file. */ +/* #undef HAVE_REED_SOL_H */ + +/* Define to 1 if you have the header file. */ +#define HAVE_SIGNAL_H 1 + +/* Support SSE (Streaming SIMD Extensions) instructions */ +#define HAVE_SSE /**/ + +/* Support SSE2 (Streaming SIMD Extensions 2) instructions */ +#define HAVE_SSE2 /**/ + +/* Support SSE3 (Streaming SIMD Extensions 3) instructions */ +#define HAVE_SSE3 /**/ + +/* Support SSSE4.1 (Streaming SIMD Extensions 4.1) instructions */ +/* #undef HAVE_SSE4_1 */ + +/* Support SSSE4.2 (Streaming SIMD Extensions 4.2) instructions */ +/* #undef HAVE_SSE4_2 */ + +/* Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions */ +#define HAVE_SSSE3 /**/ + +/* Define to 1 if you have the header file. */ +#define HAVE_STDARG_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STDDEF_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STDINT_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STDIO_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STDLIB_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STRINGS_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_STRING_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_SYS_STAT_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_SYS_TYPES_H 1 + +/* Define to 1 if you have the header file. */ +#define HAVE_UNISTD_H 1 + +/* Define to the sub-directory in which libtool stores uninstalled libraries. + */ +#define LT_OBJDIR ".libs/" + +/* Define to 1 if your C compiler doesn't accept -c and -o together. */ +/* #undef NO_MINUS_C_MINUS_O */ + +/* Name of package */ +#define PACKAGE "erasurecode" + +/* Define to the address where bug reports for this package should be sent. */ +#define PACKAGE_BUGREPORT "" + +/* Define to the full name of this package. */ +#define PACKAGE_NAME "erasurecode" + +/* Define to the full name and version of this package. */ +#define PACKAGE_STRING "erasurecode 0.9.4" + +/* Define to the one symbol short name of this package. */ +#define PACKAGE_TARNAME "erasurecode" + +/* Define to the home page for this package. */ +#define PACKAGE_URL "" + +/* Define to the version of this package. */ +#define PACKAGE_VERSION "0.9.4" + +/* Define to 1 if you have the ANSI C header files. */ +#define STDC_HEADERS 1 + +/* Enable extensions on AIX 3, Interix. */ +#ifndef _ALL_SOURCE +# define _ALL_SOURCE 1 +#endif +/* Enable GNU extensions on systems that have them. */ +#ifndef _GNU_SOURCE +# define _GNU_SOURCE 1 +#endif +/* Enable threading extensions on Solaris. */ +#ifndef _POSIX_PTHREAD_SEMANTICS +# define _POSIX_PTHREAD_SEMANTICS 1 +#endif +/* Enable extensions on HP NonStop. */ +#ifndef _TANDEM_SOURCE +# define _TANDEM_SOURCE 1 +#endif +/* Enable general extensions on Solaris. */ +#ifndef __EXTENSIONS__ +# define __EXTENSIONS__ 1 +#endif + + +/* Version number of package */ +#define VERSION "0.9.4" + +/* Define to 1 if on MINIX. */ +/* #undef _MINIX */ + +/* Define to 2 if the system does not provide POSIX.1 features except with + this defined. */ +/* #undef _POSIX_1_SOURCE */ + +/* Define to 1 if you need to in order for `stat' and other things to work. */ +/* #undef _POSIX_SOURCE */ diff --git a/include/config.h.in b/include/config.h.in index 462461b..d2b42c9 100644 --- a/include/config.h.in +++ b/include/config.h.in @@ -57,6 +57,9 @@ /* Support mmx instructions */ #undef HAVE_MMX +/* Define to 1 if you have the header file. */ +#undef HAVE_PTHREAD_H + /* Define to 1 if you have the `realloc' function. */ #undef HAVE_REALLOC diff --git a/include/config.h.in~ b/include/config.h.in~ new file mode 100644 index 0000000..462461b --- /dev/null +++ b/include/config.h.in~ @@ -0,0 +1,181 @@ +/* include/config.h.in. Generated from configure.ac by autoheader. */ + +/* Support Altivec instructions */ +#undef HAVE_ALTIVEC + +/* Support AVX (Advanced Vector Extensions) instructions */ +#undef HAVE_AVX + +/* Define to 1 if you have the `calloc' function. */ +#undef HAVE_CALLOC + +/* Define to 1 if you have the header file. */ +#undef HAVE_CAUCHY_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_CTYPE_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_DLFCN_H + +/* Define to 1 if you have the `free' function. */ +#undef HAVE_FREE + +/* Define to 1 if you have the header file. */ +#undef HAVE_GALOIS_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_GF_COMPLETE_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_ICONV_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_INTTYPES_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_JERASURE_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_LIBERATION_H + +/* Define to 1 if you have the `gf_complete' library (-lgf_complete). */ +#undef HAVE_LIBGF_COMPLETE + +/* Define to 1 if you have the `malloc' function. */ +#undef HAVE_MALLOC + +/* Define to 1 if you have the header file. */ +#undef HAVE_MALLOC_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_MATH_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_MEMORY_H + +/* Support mmx instructions */ +#undef HAVE_MMX + +/* Define to 1 if you have the `realloc' function. */ +#undef HAVE_REALLOC + +/* Define to 1 if you have the header file. */ +#undef HAVE_REED_SOL_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SIGNAL_H + +/* Support SSE (Streaming SIMD Extensions) instructions */ +#undef HAVE_SSE + +/* Support SSE2 (Streaming SIMD Extensions 2) instructions */ +#undef HAVE_SSE2 + +/* Support SSE3 (Streaming SIMD Extensions 3) instructions */ +#undef HAVE_SSE3 + +/* Support SSSE4.1 (Streaming SIMD Extensions 4.1) instructions */ +#undef HAVE_SSE4_1 + +/* Support SSSE4.2 (Streaming SIMD Extensions 4.2) instructions */ +#undef HAVE_SSE4_2 + +/* Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions */ +#undef HAVE_SSSE3 + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDARG_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDDEF_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDINT_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDIO_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STDLIB_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STRINGS_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_STRING_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_STAT_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_SYS_TYPES_H + +/* Define to 1 if you have the header file. */ +#undef HAVE_UNISTD_H + +/* Define to the sub-directory in which libtool stores uninstalled libraries. + */ +#undef LT_OBJDIR + +/* Define to 1 if your C compiler doesn't accept -c and -o together. */ +#undef NO_MINUS_C_MINUS_O + +/* Name of package */ +#undef PACKAGE + +/* Define to the address where bug reports for this package should be sent. */ +#undef PACKAGE_BUGREPORT + +/* Define to the full name of this package. */ +#undef PACKAGE_NAME + +/* Define to the full name and version of this package. */ +#undef PACKAGE_STRING + +/* Define to the one symbol short name of this package. */ +#undef PACKAGE_TARNAME + +/* Define to the home page for this package. */ +#undef PACKAGE_URL + +/* Define to the version of this package. */ +#undef PACKAGE_VERSION + +/* Define to 1 if you have the ANSI C header files. */ +#undef STDC_HEADERS + +/* Enable extensions on AIX 3, Interix. */ +#ifndef _ALL_SOURCE +# undef _ALL_SOURCE +#endif +/* Enable GNU extensions on systems that have them. */ +#ifndef _GNU_SOURCE +# undef _GNU_SOURCE +#endif +/* Enable threading extensions on Solaris. */ +#ifndef _POSIX_PTHREAD_SEMANTICS +# undef _POSIX_PTHREAD_SEMANTICS +#endif +/* Enable extensions on HP NonStop. */ +#ifndef _TANDEM_SOURCE +# undef _TANDEM_SOURCE +#endif +/* Enable general extensions on Solaris. */ +#ifndef __EXTENSIONS__ +# undef __EXTENSIONS__ +#endif + + +/* Version number of package */ +#undef VERSION + +/* Define to 1 if on MINIX. */ +#undef _MINIX + +/* Define to 2 if the system does not provide POSIX.1 features except with + this defined. */ +#undef _POSIX_1_SOURCE + +/* Define to 1 if you need to in order for `stat' and other things to work. */ +#undef _POSIX_SOURCE diff --git a/include/erasurecode/erasurecode.h b/include/erasurecode/erasurecode.h index 755f086..9d2c8a9 100644 --- a/include/erasurecode/erasurecode.h +++ b/include/erasurecode/erasurecode.h @@ -41,6 +41,7 @@ extern "C" { /* liberasurecode API header */ +/* Supported EC backends */ typedef enum { EC_BACKEND_NULL = 0, EC_BACKEND_RS_VAND = 1, @@ -50,51 +51,69 @@ typedef enum { EC_BACKENDS_MAX, } ec_backend_id_t; -typedef void * ec_backend_handle_t; - -typedef struct ec_backend_ops { - int (*init)(void); - int (*exit)(void); - - ec_backend_handle_t (*open)(void); - void (*close)(ec_backend_handle_t handle); - - int (*encode)(void); - int (*decode)(void); - int (*reconstruct)(void); - int (*get_fragments_needed)(void); - int (*get_fragment_metadata)(void); - int (*verify_fragment_metadata)(void); - int (*verify_stripe_metadata)(void); -} *ec_backend_ops_t; - -typedef struct ec_backend_private { - uint32_t flags; - /* other common/private EC backend members go here */ -} *ec_backend_private_t; +struct ec_backend_ops { + /* Backend register/init, unregister/cleanup routines */ + int (*init)(); + int (*exit)(); + /* Generic function pointers to be overridden with dlsym() */ + /* Do not define these as int (*f)(void) */ + int (*encode)(); + int (*decode)(); + int (*reconstruct)(); + int (*get_fragments_needed)(); + int (*get_fragment_metadata)(); + int (*verify_fragment_metadata)(); + int (*verify_stripe_metadata)(); +}; #define MAX_BASENAMELEN 64 #define MAX_LIBNAMELEN 64 #define MAX_LIBVERLEN 64 -typedef struct ec_backend { +typedef void * ec_backend_handle_t; + +/* EC backend private data */ +struct ec_backend_args { + uint32_t k; /* Number of data fragments */ + uint32_t m; /* Number of parity fragments */ + uint32_t w; /* Word-size in bits */ + uint32_t arg1; /* Reserved1 */ + uint32_t arg2; /* Reserved2 */ + uint32_t arg3; /* Reserved3 */ +}; + +/* EC backend common attributes */ +struct ec_backend_common { ec_backend_id_t id; /* EC backend id */ char name[MAX_BASENAMELEN]; /* EC backend common name */ char soname[MAX_LIBNAMELEN]; /* EC backend shared library path */ char soversion[MAX_LIBVERLEN]; /* EC backend shared library version */ - ec_backend_handle_t handle; /* EC backend shared library handle */ uint8_t users; /* EC backend number of active references */ - ec_backend_ops_t ops; /* EC backend ops table */ - ec_backend_private_t private; /* EC backend private data */ + struct ec_backend_ops * ops; /* EC backend ops table */ +}; - SLIST_ENTRY(ec_backend) link; +/* EC backend definition */ +typedef struct ec_backend { + struct ec_backend_common common; /* EC backend common attributes */ + struct ec_backend_args args; /* EC backend instance data (private) */ + void * handle; /* EC backend shared library handle */ + + SLIST_ENTRY(ec_backend) link; } *ec_backend_t; +/* API functions */ +int liberasurecode_backend_create_instance(ec_backend_t *pinstance, + const char *name, int k, int m, int w, int arg1, int arg2, int arg3); +int liberasurecode_backend_destroy_instance(ec_backend_t instance); + + /* Error codes */ typedef enum { - EBACKENDNOTSUPP = 200, + EBACKENDNOTSUPP = 200, EECMETHODNOTIMPL = 201, + EBACKENDINUSE = 203, + EBACKENDNOTAVAIL = 204, } LIBERASURECODE_ERROR_CODES; #ifdef __cplusplus diff --git a/include/stamp-h1 b/include/stamp-h1 new file mode 100644 index 0000000..b330768 --- /dev/null +++ b/include/stamp-h1 @@ -0,0 +1 @@ +timestamp for include/config.h diff --git a/src/Makefile.am b/src/Makefile.am new file mode 100644 index 0000000..780db29 --- /dev/null +++ b/src/Makefile.am @@ -0,0 +1,22 @@ +SUBDIRS = builtin/xor_codes + +lib_LTLIBRARIES = liberasurecode.la + +INCLUDES = \ + -I$(top_srcdir)/include/erasurecode \ + -I$(top_srcdir)/include/xor_codes + +# liberasurecode params +liberasurecode_la_SOURCES = \ + erasurecode.c \ + utils/chksum/crc32.c \ + utils/chksum/alg_sig.c \ + utils/chksum/galois.c \ + backends/xor/flat_xor_3.c + +liberasurecode_la_LIBADD = \ + builtin/xor_codes/libXorcode.la -lgf_complete + +# Version format (C - A).(A).(R) for C:R:A input +liberasurecode_la_LDFLAGS = -rpath '$(libdir)' -version-info 9:4:9 + diff --git a/src/Makefile.in b/src/Makefile.in new file mode 100644 index 0000000..9efaa57 --- /dev/null +++ b/src/Makefile.in @@ -0,0 +1,735 @@ +# Makefile.in generated by automake 1.11.3 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software +# Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/ax_check_compile_flag.m4 \ + $(top_srcdir)/m4/ax_ext.m4 \ + $(top_srcdir)/m4/ax_gcc_x86_avx_xgetbv.m4 \ + $(top_srcdir)/m4/ax_gcc_x86_cpuid.m4 \ + $(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltoptions.m4 \ + $(top_srcdir)/m4/ltsugar.m4 $(top_srcdir)/m4/ltversion.m4 \ + $(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/configure.ac +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +mkinstalldirs = $(install_sh) -d +CONFIG_HEADER = $(top_builddir)/include/config.h +CONFIG_CLEAN_FILES = +CONFIG_CLEAN_VPATH_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; 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+struct ec_backend flat_xor_3; + static int flat_xor_3_encode() { } @@ -52,19 +56,17 @@ static int flat_xor_3_verify_stripe_metadata() { } -static ec_backend_handle_t flat_xor_3_open(void) +static int flat_xor_3_init() { - } -static void flat_xor_3_close(ec_backend_handle_t handle) +static int flat_xor_3_exit() { - } struct ec_backend_ops flat_xor_3_ops = { - .open = flat_xor_3_open, - .close = flat_xor_3_close, + .init = flat_xor_3_init, + .exit = flat_xor_3_exit, .encode = flat_xor_3_encode, .decode = flat_xor_3_decode, .reconstruct = flat_xor_3_reconstruct, @@ -74,22 +76,12 @@ struct ec_backend_ops flat_xor_3_ops = { .verify_stripe_metadata = flat_xor_3_verify_stripe_metadata, }; -struct ec_backend flat_xor_3 = { - .id = EC_BACKEND_FLAT_XOR_3, - .name = "flat_xor_3", - .soname = "Xorcode", - .soversion = "1.0", - .handle = NULL, - .ops = &flat_xor_3_ops, +struct ec_backend_common backend_flat_xor_3 = { + .id = EC_BACKEND_FLAT_XOR_3, + .name = "flat_xor_3", + .soname = "libXorcode.so", + .soversion = "1.0", + .users = 0, + .ops = &flat_xor_3_ops, }; 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THIS SOFTWARE IS PROVIDED BY + * THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "erasurecode.h" +#include "erasurecode_internal.h" +#include "list.h" + +#include +#include +#include + +/* EC backend references */ +extern struct ec_backend_common backend_flat_xor_3; + +ec_backend_t ec_backends_supported[EC_BACKENDS_MAX] = { + /* backend_null */ NULL, + /* backend_rs_vand */ NULL, + /* backend_rs_cauchy_orig */ NULL, + (ec_backend_t) &backend_flat_xor_3, + /* backend_flat_xor_4 */ NULL, +}; + +/* Registered erasure code backend instances */ +SLIST_HEAD(backend_list, ec_backend) active_instances = + SLIST_HEAD_INITIALIZER(active_instances); +pthread_mutex_t active_instances_mutex = PTHREAD_MUTEX_INITIALIZER; + +int liberasurecode_backend_instance_register(ec_backend_t instance) +{ + pthread_mutex_lock(&active_instances_mutex); + SLIST_INSERT_HEAD(&active_instances, instance, link); + pthread_mutex_unlock(&active_instances_mutex); + + return 0; +} + +int liberasurecode_backend_instance_unregister(ec_backend_t instance) +{ + pthread_mutex_lock(&active_instances_mutex); + SLIST_REMOVE(&active_instances, instance, ec_backend, link); + pthread_mutex_unlock(&active_instances_mutex); + + return 0; +} + +/* Get EC backend by name */ +ec_backend_t liberasurecode_backend_lookup_by_name(const char *name) +{ + int b = 0; + + for (b = 0; b < EC_BACKENDS_MAX; ++b) { + if (!strcmp(ec_backends_supported[b]->common.name, name)) + return ec_backends_supported[b]; + } + + return NULL; +} + +/* Name to ID mapping for EC backend */ +ec_backend_id_t liberasurecode_backend_lookup_id(const char *name) +{ + int b = 0; + + for (b = 0; b < EC_BACKENDS_MAX; ++b) { + ec_backend_t backend = ec_backends_supported[b]; + if (backend && !strcmp(backend->common.name, name)) + return backend->common.id; + } + + return -1; +} + +/* Check if a backend name is in the supported list */ +int liberasurecode_backend_supported(const char *name) +{ + return (liberasurecode_backend_lookup_by_name(name) != NULL); +} + +/* Generic dlopen/dlclose routines */ +int liberasurecode_backend_open(ec_backend_t instance) +{ + void *handle = NULL; + if (instance && NULL != instance->handle) + return 0; + + /* Use RTLD_LOCAL to avoid symbol collisions */ + instance->handle = dlopen(instance->common.soname, RTLD_LAZY | RTLD_LOCAL); + if (NULL == instance->handle) { + fprintf(stderr, "%s\n", dlerror()); + return -EBACKENDNOTAVAIL; + } + + dlerror(); /* Clear any existing errors */ + return 0; +} + +int liberasurecode_backend_close(ec_backend_t instance) +{ + if (NULL == instance || NULL == instance->handle) + return 0; + + dlclose(instance->handle); + dlerror(); /* Clear any existing errors */ + + instance->handle = NULL; + return 0; +} + +/* Initialize and open a backend - pointer to backend instance + * returned in 'pinstance.' */ +int liberasurecode_backend_create_instance( + ec_backend_t *pinstance, + const char *name, int k, int m, int w, + int arg1, int arg2, int arg3) +{ + int err = 0; + ec_backend_t instance = NULL; + struct ec_backend_args args = { + .k = k, .m = m, .w = w, + .arg1 = arg1, .arg2 = arg2, .arg3 = arg3, + }; + + ec_backend_id_t id = liberasurecode_backend_lookup_id(name); + if (-1 == id) + return -EBACKENDNOTSUPP; + + /* Allocate memory for ec_backend instance */ + instance = calloc(1, sizeof(*instance)); + if (NULL == instance) + return -ENOMEM; + + /* Copy common backend, args struct */ + instance->common = ec_backends_supported[id]->common; + instance->args = args; + + /* Open backend .so if not already open */ + /* backend handle is returned in backend->handle */ + err = liberasurecode_backend_open(instance); + if (err < 0) { + /* ignore during init, return the same handle */ + free(instance); + *pinstance = NULL; + return err; + } + + /* Call private init() for the backend */ + instance->common.ops->init(); + + /* Register instance */ + liberasurecode_backend_instance_register(instance); + + *pinstance = instance; + + return 0; +} + +/* deinitialize and close a backend */ +int liberasurecode_backend_destroy_instance(ec_backend_t instance) +{ + liberasurecode_backend_close(instance); + liberasurecode_backend_instance_unregister(instance); + free(instance); +} + +#if 0 +/* Validate backend before calling init */ +int liberasurecode_backend_validate(ec_backend_t backend) +{ + /* Verify that the backend implements all required methods */ +} + +/* FIXME - do we need to use reference counts if we are creating +* a new instance per user */ + +/* Get a reference to an EC backend */ +ec_backend_t liberasurecode_backend_get(const char *name) +{ + ec_backend_t b = liberasurecode_backend_lookup_by_name(name); + if (NULL != b) + ++b->users; + return b; +} + +/* Drop an EC backend reference held */ +void liberasurecode_backend_put(ec_backend_t backend) +{ + if (backend->users > 0) + --backend->users; +} + +/* Query interface for active instances */ +ec_backend_t liberasurecode_backend_instance_active(ec_backend_t instance) +{ + ec_backend_t b; + + SLIST_FOREACH(b, &active_instances, link) { + if (strcmp(b->name, name) == 0) + return b; + } + + return NULL; +} + +ec_backend_t liberasurecode_backend_lookup_by_soname(const char *soname) +{ + ec_backend_t b; + + SLIST_FOREACH(b, &active_instances, link) { + if (strcmp(b->soname, soname) == 0) + return b; + } + + return NULL; +} +#endif + + diff --git a/src/main.c b/src/main.c deleted file mode 100644 index 864b81d..0000000 --- a/src/main.c +++ /dev/null @@ -1,104 +0,0 @@ -/* - * - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, this - * list of conditions and the following disclaimer in the documentation and/or - * other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY - * THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - * EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE - * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "erasurecode.h" -#include "erasurecode_internal.h" -#include "list.h" - -#include - -/* Registered erasure code backends */ -SLIST_HEAD(backend_list, ec_backend) registered_backends = - SLIST_HEAD_INITIALIZER(registered_backends); -pthread_mutex_t registered_backends_mutex = PTHREAD_MUTEX_INITIALIZER; - -/* Add erasurecode backend to the supported backends list */ -int liberasurecode_backend_register(ec_backend_t backend) -{ - pthread_mutex_lock(®istered_backends_mutex); - SLIST_INSERT_HEAD(®istered_backends, backend, link); - pthread_mutex_unlock(®istered_backends_mutex); -} - -/* Remove erasurecode backend from the supported backends list */ -int liberasurecode_backend_unregister(ec_backend_t backend) -{ - pthread_mutex_lock(®istered_backends_mutex); - SLIST_REMOVE(®istered_backends, backend, ec_backend, link); - pthread_mutex_unlock(®istered_backends_mutex); -} - -/* Backend query interfaces */ -ec_backend_t liberasurecode_backend_get_by_name(const char *name) -{ - ec_backend_t b; - - SLIST_FOREACH(b, ®istered_backends, link) { - if (strcmp(b->name, name) == 0) { - ++b->users; - return b; - } - } - - return NULL; -} - -ec_backend_t liberasurecode_backend_get_by_soname(const char *soname) -{ - ec_backend_t b; - - SLIST_FOREACH(b, ®istered_backends, link) { - if (strcmp(b->soname, soname) == 0) { - ++b->users; - return b; - } - } - - return NULL; -} - -void liberasurecode_backend_put(ec_backend_t backend) -{ - if (backend->users > 0) - --backend->users; -} - -int liberasurecode_backend_supported(const char *name) -{ - return (liberasurecode_backend_get_by_name(name) != NULL); -} - -/* Validate backend before calling init */ -int validate_backend(ec_backend_t backend) -{ - /* Verify that the backend implements all required methods */ -} - -/* Try to register all supported backends */ -int liberasurecode_backend_init_all(ec_backend_t backend) -{ - // FIXME - implement init table for other backend init methods - // for now, init just the xor backend -} - diff --git a/test/Makefile.am b/test/Makefile.am index bfa8a8f..5d82389 100644 --- a/test/Makefile.am +++ b/test/Makefile.am @@ -1,16 +1,20 @@ +noinst_HEADERS = builtin/xor_codes/test_xor_hd_code.h +noinst_PROGRAMS = test_xor_hd_code alg_sig_test liberasurecode_test + test_xor_hd_code_SOURCES = \ builtin/xor_codes/test_xor_hd_code.c \ builtin/xor_codes/test_xor_hd_code.h test_xor_hd_code_CPPFLAGS = -I$(top_srcdir)/include -I$(top_srcdir)/include/erasurecode -I$(top_srcdir)/include/xor_codes -test_xor_hd_code_LDFLAGS = -lerasurecode -lgf_complete $(top_srcdir)/src/builtin/xor_codes/libXorcode.la +test_xor_hd_code_LDFLAGS = -static-libtool-libs -lgf_complete $(top_srcdir)/src/liberasurecode.la $(top_srcdir)/src/builtin/xor_codes/libXorcode.la check_PROGRAMS = test_xor_hd_code alg_sig_test_SOURCES = utils/chksum/test_alg_sig.c alg_sig_test_CPPFLAGS = -I$(top_srcdir)/include -I$(top_srcdir)/include/erasurecode -I$(top_srcdir)/include/xor_codes -alg_sig_test_LDFLAGS = -lerasurecode -lgf_complete $(top_srcdir)/src/builtin/xor_codes/libXorcode.la +alg_sig_test_LDFLAGS = -static-libtool-libs $(top_srcdir)/src/liberasurecode.la -lgf_complete -ldl check_PROGRAMS += alg_sig_test -noinst_HEADERS = builtin/xor_codes/test_xor_hd_code.h -noinst_PROGRAMS = test_xor_hd_code alg_sig_test - +liberasurecode_test_SOURCES = liberasurecode_test.c +liberasurecode_test_CPPFLAGS = -I$(top_srcdir)/include -I$(top_srcdir)/include/erasurecode +liberasurecode_test_LDFLAGS = -static -lgf_complete $(top_srcdir)/src/liberasurecode.la -ldl +check_PROGRAMS += liberasurecode_test diff --git a/test/liberasurecode_test.c b/test/liberasurecode_test.c new file mode 100644 index 0000000..77344fc --- /dev/null +++ b/test/liberasurecode_test.c @@ -0,0 +1,13 @@ +#include "erasurecode.h" + +int main() +{ + ec_backend_t backend; + + int err = liberasurecode_backend_create_instance(&backend, + "flat_xor_3", 10, 4, 0, 0, 0, 0); + if (backend) + liberasurecode_backend_destroy_instance(backend); + return 0; +} +