1 #define _XOPEN_SOURCE 600
2
3 /* Legacy feature macro. */
4 #define _BSD_SOURCE
5 /* New feature macro, always define to squash warning about _BSD_SOURCE
6 with glibc 2.20+. */
7 #define _DEFAULT_SOURCE 1
8
9 #define _GNU_SOURCE
10
11 #include <stdio.h>
12
13 #include <sched.h>
14 #include <stdlib.h>
15 #include <string.h>
16 #include "tests/sys_mman.h"
17 #include <sys/syscall.h>
18 #include <sys/wait.h>
19 #include <unistd.h>
20
21 #include "valgrind.h"
22
23 #define STACK_SIZE 8192
24
25 #ifndef CLONE_THREAD
26 #define CLONE_THREAD 0x00010000 /* Same thread group? */
27 #endif
28
thread_main(void * arg)29 static int thread_main(void *arg)
30 {
31 char buffer[1024];
32
33 memset( buffer, 1, sizeof( buffer ) );
34
35 sleep(2); /* ppc64-linux hack */
36 return memchr( buffer, 1, sizeof( buffer ) ) == NULL;
37 }
38
main(int argc,char ** argv)39 int main(int argc, char **argv)
40 {
41 void *stack;
42 int stackid __attribute__((unused));
43 pid_t pid;
44
45 /* "2*" is a ppc64-linux hack */
46 if ( ( stack = mmap( NULL, 2* STACK_SIZE, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 ) ) == MAP_FAILED )
47 {
48 perror( "mmap" );
49 exit( 1 );
50 }
51
52 stackid = VALGRIND_STACK_REGISTER( stack, stack + STACK_SIZE );
53
54 if ( ( pid = clone( thread_main, stack + STACK_SIZE, CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|SIGCHLD, NULL ) ) == -1 )
55 {
56 perror( "clone" );
57 exit( 1 );
58 }
59
60 sleep( 1 );
61
62 exit( 0 );
63 }
64