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 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 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
