toaruos/userspace/shmtest2.c
Kevin Lange 07955c83c6 Fix dozens of build warnings and other oddities.
* Finally bring syscall.h up to speed and include all syscalls in the
  syscall module of the C library.
* Remove the third-party obfuscated C demos (we have nyancat, good
  enough)
* Fix userspace apps to build without complaining about undeclared
  strtok_r by disable __STRICT_ANSI__
* Fix .eh_frame by including the proper stuff with libgcc.
2012-09-04 20:27:49 -07:00

58 lines
1.2 KiB
C

/*
* shmtest2
* It's a test app. For shm.
*/
#include <sys/types.h>
#include <stdint.h>
#include <syscall.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define KEY "shm_test3.mem"
#define MAGIC 111
int client_proc(uint32_t size) {
volatile unsigned char * mem = (volatile unsigned char *)syscall_shm_obtain(KEY, &size);
while (mem[0] != MAGIC) {}
mem[0] = (uint8_t)(MAGIC + 1);
for (uint32_t i = 1; i < size; i++) {
if (mem[i] != (unsigned char)i) {
printf("Verification at 0x%x (i=%d) failed; expected=%d got=%d\n", &mem[i], i, (uint8_t)i, mem[i]);
return 1;
}
}
printf("Client: verification passed. Exiting.\n");
return 0;
}
int server_proc(uint32_t size) {
volatile unsigned char * mem = (volatile unsigned char *)syscall_shm_obtain(KEY, &size);
for (uint32_t i = 1; i < size; i++) {
mem[i] = (unsigned char)i;
}
mem[0] = MAGIC;
printf("Server: Written memory space.\n");
while (mem[0] == MAGIC) {}
return 0;
}
int main (int argc, char ** argv) {
if (argc < 2) {
printf("usage: %s [size]\n", argv[0]);
}
int size = atoi(argv[1]);
if (!fork()) {
return server_proc(size);
} else {
return client_proc(size);
}
}