pintos-doxygen/html/syn-rw_8c_source.html

/** Grows a file in chunks while subprocesses read the growing

   file. */


#include <random.h>

#include <syscall.h>

#include "tests/filesys/extended/syn-rw.h"

#include "tests/lib.h"

#include "tests/main.h"


char buf[BUF_SIZE];


#define CHILD_CNT 4


void

test_main (void)

{

  pid_t children[CHILD_CNT];

  size_t ofs;

  int fd;


  CHECK (create (file_name, 0), "create \"%s\"", file_name);

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


  exec_children ("child-syn-rw", children, CHILD_CNT);


  random_bytes (buf, sizeof buf);

  quiet = true;

  for (ofs = 0; ofs < BUF_SIZE; ofs += CHUNK_SIZE)

    CHECK (write (fd, buf + ofs, CHUNK_SIZE) > 0,

           "write %d bytes at offset %zu in \"%s\"",

           (int) CHUNK_SIZE, ofs, file_name);

  quiet = false;


  wait_children (children, CHILD_CNT);

}

create
bool create(const char *file, unsigned initial_size)
Definition: syscall.c:91

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

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

pid_t
int pid_t
Process identifier.
Definition: syscall.h:8

wait_children
void wait_children(pid_t pids[], size_t child_cnt)
Definition: lib.c:94

quiet
bool quiet
Definition: lib.c:9

exec_children
void exec_children(const char *child_name, pid_t pids[], size_t child_cnt)
Definition: lib.c:80

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

main.h

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

random.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

test_main
void test_main(void)
tests/main.h
Definition: syn-rw.c:15

buf
char buf[BUF_SIZE]
Grows a file in chunks while subprocesses read the growing file.
Definition: syn-rw.c:10

CHILD_CNT
#define CHILD_CNT
Definition: syn-rw.c:12

syn-rw.h

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