CS318 - Pintos
Pintos source browser for JHU CS318 course
child-mm-wrt.c
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1 /** Child process of mmap-exit.
2  Mmaps a file and writes to it via the mmap'ing, then exits
3  without calling munmap. The data in the mapped region must be
4  written out at program termination. */
5 
6 #include <string.h>
7 #include <syscall.h>
8 #include "tests/vm/sample.inc"
9 #include "tests/lib.h"
10 #include "tests/main.h"
11 
12 #define ACTUAL ((void *) 0x10000000)
13 
14 void
15 test_main (void)
16 {
17  int handle;
18 
19  CHECK (create ("sample.txt", sizeof sample), "create \"sample.txt\"");
20  CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
21  CHECK (mmap (handle, ACTUAL) != MAP_FAILED, "mmap \"sample.txt\"");
22  memcpy (ACTUAL, sample, sizeof sample);
23 }
24 
lib.h
string.h
memcpy
void * memcpy(void *dst_, const void *src_, size_t size)
Copies SIZE bytes from SRC to DST, which must not overlap.
Definition: string.c:7
CHECK
#define CHECK(SUCCESS,...)
Takes an expression to test for SUCCESS and a message, which may include printf-style arguments.
Definition: lib.h:29
ACTUAL
#define ACTUAL
Child process of mmap-exit.
Definition: child-mm-wrt.c:12
test_main
void test_main(void)
tests/main.h
Definition: child-mm-wrt.c:15
MAP_FAILED
#define MAP_FAILED
Definition: syscall.h:13
open
int open(const char *file)
Definition: syscall.c:103
main.h
mmap
mapid_t mmap(int fd, void *addr)
Project 3 and optionally project 4.
Definition: syscall.c:145
create
bool create(const char *file, unsigned initial_size)
Definition: syscall.c:91
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