sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame^] | 1 | #include <string.h> |
| 2 | #include <pthread.h> |
| 3 | #include <stdlib.h> |
| 4 | #include <stdio.h> |
| 5 | #include <fcntl.h> |
| 6 | #include <unistd.h> |
| 7 | #include <sys/types.h> |
| 8 | #include <sys/syscall.h> |
| 9 | #include "../memcheck/memcheck.h" |
| 10 | int using_threads = 0; /* test collision with a global in gdbserver */ |
| 11 | /* we will undefine one char on two */ |
| 12 | static char undefined[10] = "undefined"; |
| 13 | |
| 14 | #define LOOPS 10000000 |
| 15 | static int loopmain, loopt1, loopt2; |
| 16 | |
| 17 | static double pi = 3.14159265358979323846264338327950288; |
| 18 | |
| 19 | static pid_t gettid() |
| 20 | { |
| 21 | #ifdef __NT_gettid |
| 22 | return syscall(__NR_gettid); |
| 23 | #else |
| 24 | return getpid(); |
| 25 | #endif |
| 26 | } |
| 27 | static void whoami(char *msg) |
| 28 | { |
| 29 | printf("pid %d Thread %d %s\n", getpid(), gettid(), msg); fflush(stdout); |
| 30 | } |
| 31 | |
| 32 | static int int_und; |
| 33 | static int sleeps = 15; |
| 34 | static void make_error (char *s) |
| 35 | { |
| 36 | char *make_error_name = "make_error name"; |
| 37 | char c; |
| 38 | double pi2 = 2.0 * pi; |
| 39 | whoami(s); |
| 40 | if (int_und == 0) |
| 41 | printf ("%s int_und is zero %d\n", s, int_und); |
| 42 | else |
| 43 | printf ("%s int_und is not zero\n", s); |
| 44 | fflush(stdout); |
| 45 | } |
| 46 | |
| 47 | static void level () |
| 48 | { |
| 49 | char *level_name = "level name"; |
| 50 | make_error ("called from level"); |
| 51 | } |
| 52 | |
| 53 | static void loops (int *loopnr) |
| 54 | { |
| 55 | int i, j; |
| 56 | for (i = 0; i < LOOPS; i++) |
| 57 | for (j = 0; i < LOOPS; i++) |
| 58 | *loopnr++; |
| 59 | } |
| 60 | |
| 61 | static void *brussels_fn(void *v) |
| 62 | { |
| 63 | char *brussels_name = "Brussels"; |
| 64 | make_error ("called from Brussels"); |
| 65 | loopt1 = 1; |
| 66 | while (! (loopt1 && loopt2 && loopmain)) |
| 67 | loopt1++; |
| 68 | loops (&loopt1); |
| 69 | return NULL; |
| 70 | } |
| 71 | static void *london_fn(void *v) |
| 72 | { |
| 73 | char *london_name = "London"; |
| 74 | make_error ("called from London"); |
| 75 | loopt2 = 1; |
| 76 | while (! (loopt1 && loopt2 && loopmain)) |
| 77 | loopt2++; |
| 78 | loops (&loopt2); |
| 79 | sleep(10); |
| 80 | return NULL; |
| 81 | } |
| 82 | static void *petaouchnok_fn(void *v) |
| 83 | { |
| 84 | char *petaouchnok_name = "Petaouchnok"; |
| 85 | struct timeval t; |
| 86 | int i; |
| 87 | for (i = 1; i <= sleeps; i++) { |
| 88 | t.tv_sec = 5; |
| 89 | t.tv_usec = 0; |
| 90 | fprintf (stderr, "Petaouchnok sleep nr %d out of %d sleeping 5 seconds\n", |
| 91 | i, sleeps); |
| 92 | fflush(stderr); |
| 93 | select (0, NULL, NULL, NULL, &t); |
| 94 | } |
| 95 | return NULL; |
| 96 | } |
| 97 | static void leaf(void) {} |
| 98 | static void breakme(int line) |
| 99 | { |
| 100 | if (line > 1000) |
| 101 | leaf(); // ensures not leaf, as ppc unwind implies VEX iropt precise exns |
| 102 | } |
| 103 | int main (int argc, char *argv[]) |
| 104 | { |
| 105 | char *main_name = "main name"; |
| 106 | pthread_t ebbr, egll, zzzz; |
| 107 | int i = 1234; |
| 108 | char undef = '?'; |
| 109 | char *some_mem = malloc(100); |
| 110 | VALGRIND_MAKE_MEM_UNDEFINED(&undef, 1); |
| 111 | int len = strlen(undefined); |
| 112 | breakme(__LINE__); //break1 |
| 113 | for (i = len-1; i >= 0; i=i-2) |
| 114 | undefined[i] = undef; |
| 115 | *(char*)&int_und = undef; |
| 116 | |
| 117 | breakme(__LINE__); //break2 |
| 118 | |
| 119 | if (argc > 1) |
| 120 | sleeps = atoi(argv[1]); |
| 121 | |
| 122 | level(); |
| 123 | make_error ("called from main"); |
| 124 | |
| 125 | pthread_create(&ebbr, NULL, brussels_fn, NULL); |
| 126 | pthread_create(&egll, NULL, london_fn, NULL); |
| 127 | pthread_create(&zzzz, NULL, petaouchnok_fn, NULL); |
| 128 | |
| 129 | loopmain = 1; |
| 130 | while (! (loopt1 && loopt2 && loopmain)) |
| 131 | loopmain++; |
| 132 | for (i = 0; i < LOOPS; i++) { |
| 133 | loopmain++; |
| 134 | |
| 135 | if (loopmain == 10000) |
| 136 | make_error ("in main loop"); |
| 137 | } |
| 138 | |
| 139 | pthread_join(ebbr, NULL); |
| 140 | |
| 141 | make_error ("called from main (the end, before joining t3)"); |
| 142 | |
| 143 | pthread_join(zzzz, NULL); |
| 144 | |
| 145 | if (argc > 2) { |
| 146 | for (i = 0; i < 100; i++) |
| 147 | if ((*(&undef + i*4000) == 0) || (*(&undef - i*4000) == 0)) { |
| 148 | printf ("there are some null bytes here and there %d\n", i); |
| 149 | fflush(stdout); |
| 150 | } |
| 151 | } |
| 152 | exit(0); |
| 153 | } |