1 #define _XOPEN_SOURCE 600
2 #define _BSD_SOURCE
3 #define _GNU_SOURCE
4
5 #include <stdio.h>
6
7 #include <sched.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include "tests/sys_mman.h"
11 #include <sys/syscall.h>
12 #include <sys/wait.h>
13 #include <unistd.h>
14
15 #include "valgrind.h"
16
17 #define STACK_SIZE 8192
18
19 #ifndef CLONE_THREAD
20 #define CLONE_THREAD 0x00010000 /* Same thread group? */
21 #endif
22
thread_main(void * arg)23 static int thread_main(void *arg)
24 {
25 char buffer[1024];
26
27 memset( buffer, 1, sizeof( buffer ) );
28
29 sleep(2); /* ppc64-linux hack */
30 return memchr( buffer, 1, sizeof( buffer ) ) == NULL;
31 }
32
main(int argc,char ** argv)33 int main(int argc, char **argv)
34 {
35 void *stack;
36 int stackid __attribute__((unused));
37 pid_t pid;
38
39 /* "2*" is a ppc64-linux hack */
40 if ( ( stack = mmap( NULL, 2* STACK_SIZE, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 ) ) == MAP_FAILED )
41 {
42 perror( "mmap" );
43 exit( 1 );
44 }
45
46 stackid = VALGRIND_STACK_REGISTER( stack, stack + STACK_SIZE );
47
48 if ( ( pid = clone( thread_main, stack + STACK_SIZE, CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|SIGCHLD, NULL ) ) == -1 )
49 {
50 perror( "clone" );
51 exit( 1 );
52 }
53
54 sleep( 1 );
55
56 exit( 0 );
57 }
58