source: icGREP/icgrep-devel/icgrep/lz4d_ext_dep.cpp @ 5893

Last change on this file since 5893 was 5874, checked in by xwa163, 17 months ago
  1. Add Debug option “extract-and-deposit-only” for lz4_ext_dep
  2. Use MultiplePdepKernel? in LZ4Generator
File size: 3.5 KB
Line 
1/*
2 *  Copyright (c) 2017 International Characters.
3 *  This software is licensed to the public under the Open Software License 3.0.
4 *  icgrep is a trademark of International Characters.
5 */
6
7
8#include <llvm/IR/Module.h>
9#include <llvm/Linker/Linker.h>
10#include <llvm/Support/PrettyStackTrace.h>
11#include <llvm/Support/Signals.h>
12#include <llvm/Support/ManagedStatic.h>
13#include <IR_Gen/idisa_target.h>
14#include <boost/filesystem.hpp>
15#include <boost/iostreams/device/mapped_file.hpp>
16
17#include <lz4FrameDecoder.h>
18#include <cc/cc_compiler.h>
19#include <toolchain/toolchain.h>
20#include <kernels/cc_kernel.h>
21#include <kernels/streamset.h>
22#include <kernels/s2p_kernel.h>
23#include <kernels/kernel_builder.h>
24#include <toolchain/cpudriver.h>
25
26#include <iostream>
27#include <lz4/LZ4Generator.h>
28
29namespace re { class CC; }
30
31using namespace llvm;
32using namespace parabix;
33using namespace kernel;
34
35static cl::OptionCategory lz4dFlags("Command Flags", "lz4d options");
36static cl::opt<std::string> inputFile(cl::Positional, cl::desc("<input file>"), cl::Required, cl::cat(lz4dFlags));
37static cl::opt<std::string> outputFile(cl::Positional, cl::desc("<output file>"), cl::Required, cl::cat(lz4dFlags));
38static cl::opt<bool> overwriteOutput("f", cl::desc("Overwrite existing output file."), cl::init(false), cl::cat(lz4dFlags));
39
40
41static cl::OptionCategory lz4dDebugFlags("LZ4D Debug Flags", "lz4d debug options");
42static cl::opt<bool> extractOnly("extract-only", cl::desc("Only extract literal data to output file"), cl::init(false), cl::cat(lz4dDebugFlags));
43static cl::opt<bool> extractAndDepositOnly("extract-and-deposit-only", cl::desc("Only extract and deposit literal data to output file"), cl::init(false), cl::cat(lz4dDebugFlags));
44
45
46int main(int argc, char *argv[]) {
47    // This boilerplate provides convenient stack traces and clean LLVM exit
48    // handling. It also initializes the built in support for convenient
49    // command line option handling.
50    sys::PrintStackTraceOnErrorSignal(argv[0]);
51    llvm::PrettyStackTraceProgram X(argc, argv);
52    llvm_shutdown_obj shutdown;
53    codegen::ParseCommandLineOptions(argc, argv, {&lz4dFlags, &lz4dDebugFlags, codegen::codegen_flags()});
54    std::string fileName = inputFile;
55    LZ4FrameDecoder lz4Frame(fileName);
56    if (!lz4Frame.isValid()) {
57        errs() << "Invalid LZ4 file.\n";
58        return -1;
59    }
60
61    if (boost::filesystem::exists(outputFile)) {
62        if (overwriteOutput) {
63            boost::filesystem::remove(outputFile);
64        } else {
65            errs() << outputFile + " existed. Use -f argument to overwrite.\n";
66            return -1;
67        }
68    }
69
70    boost::iostreams::mapped_file_source mappedFile;
71    // Since mmap offset has to be multiples of pages, we can't use it to skip headers.
72    mappedFile.open(fileName , lz4Frame.getBlocksLength() + lz4Frame.getBlocksStart());
73    size_t headerLength = lz4Frame.getBlocksStart();
74    //char *fileBuffer = const_cast<char *>(mappedFile.data()) + lz4Frame.getBlocksStart();
75    char *fileBuffer = const_cast<char *>(mappedFile.data());
76
77    if (codegen::SegmentSize < 2) {
78        codegen::SegmentSize = 2;
79    }
80
81    LZ4Generator g;
82
83    if (extractOnly) {
84        g.generateExtractOnlyPipeline(outputFile);
85    } else if (extractAndDepositOnly) {
86        g.generateExtractAndDepositOnlyPipeline(outputFile);
87    } else {
88        g.generatePipeline(outputFile);
89    }
90
91    auto main = g.getMainFunc();
92
93    main(fileBuffer, lz4Frame.getBlocksStart(), lz4Frame.getBlocksStart() + lz4Frame.getBlocksLength(), lz4Frame.hasBlockChecksum());
94
95    mappedFile.close();
96    return 0;
97}
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