From 76386b8312a7a087ac5a18dd308e899aa943eb31 Mon Sep 17 00:00:00 2001
From: Nicholas Yang <parablank@gmail.com>
Date: Tue, 20 Mar 2018 15:53:55 -0400
Subject: [PATCH] seek function but not tested
---
constraintSolver/ISRWord.cpp | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/constraintSolver/ISRWord.cpp b/constraintSolver/ISRWord.cpp
index 639b151..a4def3c 100644
--- a/constraintSolver/ISRWord.cpp
+++ b/constraintSolver/ISRWord.cpp
@@ -170,7 +170,24 @@ Location ISRWord::next() {
Location ISRWord::seek( Location target ) {
if(!wordSeekLookupTable.empty()) {
-
+ auto best = wordSeekLookupTable.front();
+ for(auto entry : wordSeekLookupTable) {
+ if(entry.realLocation < target) {
+ best = entry;
+ } else {
+ string currentChunkFileLocation = "index-test-files/twitter/index" + to_string(listOfChunks[currentChunk]) + ".txt";
+ int currentChunkFile = open(currentChunkFileLocation.c_str(), O_RDONLY);
+ ssize_t currentChunkFileSize = FileSize(currentChunkFile);
+ currentMemMap = (char*) mmap(nullptr, currentChunkFileSize, PROT_READ, MAP_PRIVATE, currentChunkFile, 0);
+ currentMemMap += best.seekOffset;
+ currentLocation = best.realLocation;
+ return best.realLocation;
+ }
+ }
+ } else {
+ while(next() <= target) {
+ }
+ return currentLocation;
}
}
--
GitLab