source: icGREP/icgrep-devel/icgrep/lzparabix_grep.cpp @ 6122

Last change on this file since 6122 was 6122, checked in by cameron, 10 months ago

include <fstream>

File size: 3.0 KB
Line 
1//
2// Created by wxy325 on 2018/6/19.
3//
4
5
6#include <llvm/IR/Module.h>
7#include <llvm/Linker/Linker.h>
8#include <llvm/Support/PrettyStackTrace.h>
9#include <llvm/Support/Signals.h>
10#include <llvm/Support/ManagedStatic.h>
11#include <IR_Gen/idisa_target.h>
12#include <boost/filesystem.hpp>
13#include <boost/iostreams/device/mapped_file.hpp>
14
15#include <cc/cc_compiler.h>
16#include <toolchain/toolchain.h>
17#include <kernels/cc_kernel.h>
18#include <kernels/streamset.h>
19#include <kernels/kernel_builder.h>
20#include <toolchain/cpudriver.h>
21#include <fstream>
22#include <iostream>
23
24
25#include <re/re_alt.h>
26#include <re/re_start.h>
27#include <re/re_end.h>
28#include <re/re_utility.h>
29#include <re/re_toolchain.h>
30#include <pablo/pablo_toolchain.h>
31#include <llvm/Support/raw_ostream.h>
32#include <lzparabix/LZParabixGrepGenerator.h>
33
34
35namespace re { class CC; }
36
37using namespace llvm;
38using namespace parabix;
39using namespace kernel;
40
41static cl::OptionCategory lz4GrepFlags("Command Flags", "lz4d options");
42static cl::opt<std::string> regexString(cl::Positional, cl::desc("<regex>"), cl::Required, cl::cat(lz4GrepFlags));
43static cl::opt<std::string> inputFile(cl::Positional, cl::desc("<input file>"), cl::Required, cl::cat(lz4GrepFlags));
44static cl::opt<bool> countOnly("count-only", cl::desc("Only count the match result"), cl::init(false), cl::cat(lz4GrepFlags));
45static cl::opt<bool> enableMultiplexing("enable-multiplexing", cl::desc("Enable CC multiplexing."), cl::init(false), cl::cat(lz4GrepFlags));
46
47static cl::OptionCategory lz4GrepDebugFlags("LZ4 Grep Debug Flags", "lz4d debug options");
48
49
50size_t getFileSize(std::string filename) {
51    std::ifstream f(filename, std::ios::binary | std::ios::ate);
52    if (f.fail()) {
53        return 0;
54    }
55    size_t fileSize = f.tellg();
56    f.close();
57    return fileSize;
58}
59
60
61int main(int argc, char *argv[]) {
62    // This boilerplate provides convenient stack traces and clean LLVM exit
63    // handling. It also initializes the built in support for convenient
64    // command line option handling.
65    sys::PrintStackTraceOnErrorSignal(argv[0]);
66    llvm::PrettyStackTraceProgram X(argc, argv);
67    llvm_shutdown_obj shutdown;
68    codegen::ParseCommandLineOptions(argc, argv, {&lz4GrepFlags, &lz4GrepDebugFlags, codegen::codegen_flags()});
69    std::string fileName = inputFile;
70
71    boost::iostreams::mapped_file_source mappedFile;
72    // Since mmap offset has to be multiples of pages, we can't use it to skip headers.
73    size_t fileSize = getFileSize(fileName);
74    mappedFile.open(fileName , fileSize);
75    //char *fileBuffer = const_cast<char *>(mappedFile.data()) + lz4Frame.getBlocksStart();
76    char *fileBuffer = const_cast<char *>(mappedFile.data());
77    re::RE * re_ast = re::RE_Parser::parse(regexString, re::MULTILINE_MODE_FLAG);
78
79    LZParabixGrepGenerator g(enableMultiplexing);
80
81    g.generateCountOnlyAioPipeline(re_ast);
82    auto main = g.getCountOnlyGrepMainFunction();
83    uint64_t countResult = main(fileBuffer, 0, fileSize, false);
84    llvm::outs() << countResult << "\n";
85
86
87    mappedFile.close();
88    return 0;
89}
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