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| author | Matt Strapp <strap012@umn.edu> | 2020-11-02 18:40:44 -0600 |
|---|---|---|
| committer | Matt Strapp <strap012@umn.edu> | 2020-11-02 18:40:44 -0600 |
| commit | 0306093118d171bb332bd8b8d4cf9d66a6ff1d84 (patch) | |
| tree | 0941416ff4d623340b56a77a1ddd7fff57785c69 /P2 | |
| parent | Add link (diff) | |
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Pain
Diffstat (limited to 'P2')
| -rw-r--r-- | P2/lib/utils.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/P2/lib/utils.c b/P2/lib/utils.c index b9454bb..577ca64 100644 --- a/P2/lib/utils.c +++ b/P2/lib/utils.c @@ -38,7 +38,6 @@ void sendChunkData(char *inputFile, int nMappers) { int fd = open(inputFile, O_RDONLY); // construct chunks of 1024 bytes while(read(fd, message.msgText, chunkSize) != 0) { - // printf("%s\n", message.msgText); /* Go to the end of the chunk, check if final character is a space if character is a space, do nothing else cut off before that word and put back file. @@ -46,16 +45,18 @@ void sendChunkData(char *inputFile, int nMappers) { Maybe copy message.msgText into a new array, do the backwards iteration, and then replace message.msgText with the temp array? Or something? */ - //fseek()?? - //https://www.tutorialspoint.com/c_standard_library/c_function_fseek.htm + //lseek()?? (LOW LEVEL) + //http://crasseux.com/books/ctutorial/Finding-file-positions-at-a-low-level.html // TODO! help - // int i = 1023; - // while(message.msgText[i] != ' ') { - // message.msgText - // } - + int i = 1023; + while(message.msgText[i] != ' ') { + i--; + printf("%d\n", i); + } + lseek(fd, (i - 1023), SEEK_CUR); + printf("%s\n", message.msgText); message.msgType = (map++ % nMappers) + 1 ; //THIS IS DEBUG, NOT ACTUALLY FUNCTIONAL (like at all) msgsnd(msgid, &message, map, 0); |