pintos-doxygen/html/child-syn-wrt_8c_source.html

/** Child process for syn-read test.

   Writes into part of a test file.  Other processes will be

   writing into other parts at the same time. */


#include <random.h>

#include <stdlib.h>

#include <syscall.h>

#include "tests/lib.h"

#include "tests/filesys/base/syn-write.h"


char buf[BUF_SIZE];


int

main (int argc, char *argv[])

{

  int child_idx;

  int fd;


  quiet = true;


  CHECK (argc == 2, "argc must be 2, actually %d", argc);

  child_idx = atoi (argv[1]);


  random_init (0);

  random_bytes (buf, sizeof buf);


  CHECK ((fd = open (file_name)) > 1, "open \"%s\"", file_name);

  seek (fd, CHUNK_SIZE * child_idx);

  CHECK (write (fd, buf + CHUNK_SIZE * child_idx, CHUNK_SIZE) > 0,

         "write \"%s\"", file_name);

  msg ("close \"%s\"", file_name);

  close (fd);


  return child_idx;

}

main
int main(int argc, char *argv[])
Definition: child-syn-wrt.c:14

buf
char buf[BUF_SIZE]
Child process for syn-read test.
Definition: child-syn-wrt.c:11

atoi
int atoi(const char *s)
Converts a string representation of a signed decimal integer in S into an ‘int’, which is returned.
Definition: stdlib.c:10

close
void close(int fd)
Definition: syscall.c:139

open
int open(const char *file)
Definition: syscall.c:103

write
int write(int fd, const void *buffer, unsigned size)
Definition: syscall.c:121

seek
void seek(int fd, unsigned position)
Definition: syscall.c:127

msg
void msg(const char *format,...)
Definition: lib.c:28

quiet
bool quiet
Definition: lib.c:9

lib.h

CHECK
#define CHECK(SUCCESS,...)
Takes an expression to test for SUCCESS and a message, which may include printf-style arguments.
Definition: lib.h:29

random_bytes
void random_bytes(void *buf_, size_t size)
Writes SIZE random bytes into BUF.
Definition: random.c:54

random_init
void random_init(unsigned seed)
Initializes or reinitializes the PRNG with the given SEED.
Definition: random.c:34

random.h

stdlib.h

BUF_SIZE
#define BUF_SIZE
Definition: syn-read.h:4

file_name
static const char file_name[]
tests/filesys/base/syn-read.h
Definition: syn-read.h:5

syn-write.h

CHUNK_SIZE
#define CHUNK_SIZE
Definition: syn-write.h:5