rdtsc 1.2.0.0 → 1.3.0.0
raw patch · 4 files changed
+149/−409 lines, 4 files
Files
- COPYING +0/−375
- LICENSE +55/−0
- README +42/−0
- rdtsc.cabal +52/−34
− COPYING
@@ -1,375 +0,0 @@-This package is under the GNU General Public License, which is-included below. See at the bottom of this file for another license.---- GNU GENERAL PUBLIC LICENSE- Version 2, June 1991-- Copyright (C) 1989, 1991 Free Software Foundation, Inc.- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA- Everyone is permitted to copy and distribute verbatim copies- of this license document, but changing it is not allowed.-- Preamble-- The licenses for most software are designed to take away your-freedom to share and change it. By contrast, the GNU General Public-License is intended to guarantee your freedom to share and change free-software--to make sure the software is free for all its users. This-General Public License applies to most of the Free Software-Foundation's software and to any other program whose authors commit to-using it. (Some other Free Software Foundation software is covered by-the GNU Library General Public License instead.) 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If this is what you want to do, use the GNU Library General-Public License instead of this License.---===========================================================================--The file cycle.h is licensed under the following license:-/*- * Copyright (c) 2003, 2007-8 Matteo Frigo- * Copyright (c) 2003, 2007-8 Massachusetts Institute of Technology- *- * Permission is hereby granted, free of charge, to any person obtaining- * a copy of this software and associated documentation files (the- * "Software"), to deal in the Software without restriction, including- * without limitation the rights to use, copy, modify, merge, publish,- * distribute, sublicense, and/or sell copies of the Software, and to- * permit persons to whom the Software is furnished to do so, subject to- * the following conditions:- *- * The above copyright notice and this permission notice shall be- * included in all copies or substantial portions of the Software.- *- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE- * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION- * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.- *- */-
+ LICENSE view
@@ -0,0 +1,55 @@+Copyright (c) 2011-2012, Martin Grabmueller++All rights reserved.++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.++ * Neither the name of Martin Grabmueller nor the names of other+ contributors may be used to endorse or promote products derived+ from this software without specific prior written permission.++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+OWNER 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.++/*+ * Copyright (c) 2003, 2007-8 Matteo Frigo+ * Copyright (c) 2003, 2007-8 Massachusetts Institute of Technology+ *+ * Permission is hereby granted, free of charge, to any person obtaining+ * a copy of this software and associated documentation files (the+ * "Software"), to deal in the Software without restriction, including+ * without limitation the rights to use, copy, modify, merge, publish,+ * distribute, sublicense, and/or sell copies of the Software, and to+ * permit persons to whom the Software is furnished to do so, subject to+ * the following conditions:+ *+ * The above copyright notice and this permission notice shall be+ * included in all copies or substantial portions of the Software.+ *+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.+ *+ */
+ README view
@@ -0,0 +1,42 @@+ -*-outline-*-+* README file for Rdtsc binding++This small Cabal package provides a Haskell binding to the "rdtsc"+machine instruction on modern IA-32 processors. This instruction can+be used to read the number of cycles since processor startup and gives+very accurate timing information.++---------------------------------------------------------------------------+Note: this package contains the file cycle.h by Matteo Frigo, which+provides access to cycle counters on several architectures. The+license for this file is included in the file LICENSE in this package.+----------------------------------------------------------------------------++** Usage++Use++ runghc Setup.hs configure+ runghc Setup.hs build+ runghc Setup.hs install++for building and installing system-wide, or++ runghc Setup.hs configure --prefix=$HOME/haskell-modules+ runghc Setup.hs build+ runghc Setup.hs install --user++for building and installing in directory $HOME/haskell-modules.++Just import module "System.CPUTime.Rdtsc" into your Haskell file and use++ ghc --make FILENAME++to compile your program.++The "tests" directory contains a small test program for the module and+demonstrates its usage. There is also a C version for this test+program, to test the overheads of Haskell's FFI.++Happy Haskell hacking,+ Martin
rdtsc.cabal view
@@ -1,35 +1,53 @@-Name: rdtsc-Build-type: Simple-Version: 1.2.0.0-License: GPL-License-file: COPYING-Author: Martin Grabmueller <martin@grabmueller.de>-Maintainer: martin@grabmueller.de-Homepage: http://code.haskell.org/rdtsc-Category: Foreign binding-Synopsis: Binding for the rdtsc machine instruction-Description: This module provides the function 'rdtsc' for accessing- the 'rdtsc' machine register on modern IA-32 processors. This is- a 64-bit counter which counts the number of processor cycles since- the machine has been powered up. Using this instruction, you can- make very precise time measurements which are independent of the- actual CPU frequency. But note that you can get strange results- sometimes on a superscalar processor.- .- Also note that the Haskell foreign function interface imposes some- additional overheads. On my machine, it takes about 950 cycles to- call this function twice and to compute the difference, whereas in- C the overhead is only about 88 cycles.-Stability: Experimental-Build-depends: base >= 4 && < 5-Exposed-Modules: System.CPUTime.Rdtsc-Extensions: ForeignFunctionInterface-C-sources: cbits/rdtsc.c-Include-dirs: cbits-Install-includes: rdtsc.h, cycle.h-ghc-options: -Wall-extra-source-files:- tests/Makefile- tests/test_rdtsc.c- tests/TestRdtsc.hs+Name: rdtsc+Version: 1.3.0.0+Build-type: Simple+Cabal-version: >= 1.6 +Synopsis: Binding for the rdtsc machine instruction+Description: This module provides the function 'rdtsc' for accessing+ the 'rdtsc' machine register on modern IA-32 processors. This is+ a 64-bit counter which counts the number of processor cycles since+ the machine has been powered up. Using this instruction, you can+ make very precise time measurements which are independent of the+ actual CPU frequency. But note that you can get strange results+ sometimes on a superscalar processor.+ .+ Also note that the Haskell foreign function interface imposes some+ additional overheads. On my machine, it takes about 950 cycles to+ call this function twice and to compute the difference, whereas in+ C the overhead is only about 88 cycles.++License: BSD3++License-file: LICENSE++Author: Martin Grabmueller <martin@grabmueller.de>++Maintainer: martin@grabmueller.de++Homepage: http://code.haskell.org/rdtsc++Category: Foreign binding++Stability: Experimental++extra-source-files: README+ tests/Makefile+ tests/test_rdtsc.c+ tests/TestRdtsc.hs++Source-repository head+ type: darcs+ location: http://code.haskell.org/rdtsc/++Library+ Exposed-Modules:+ System.CPUTime.Rdtsc+ Extensions: ForeignFunctionInterface+ C-sources: cbits/rdtsc.c+ Include-dirs: cbits+ Install-includes:+ rdtsc.h+ cycle.h+ ghc-options: -Wall+ Build-depends: base >= 4 && < 5