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