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| author | Ulrich Drepper <drepper@redhat.com> | 2004-12-22 20:10:10 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2004-12-22 20:10:10 +0000 |
| commit | a334319f6530564d22e775935d9c91663623a1b4 (patch) | |
| tree | b5877475619e4c938e98757d518bb1e9cbead751 /linuxthreads/Examples/ex17.c | |
| parent | 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff) | |
| download | glibc-a334319f6530564d22e775935d9c91663623a1b4.zip glibc-a334319f6530564d22e775935d9c91663623a1b4.tar.gz glibc-a334319f6530564d22e775935d9c91663623a1b4.tar.bz2 | |
(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'linuxthreads/Examples/ex17.c')
| -rw-r--r-- | linuxthreads/Examples/ex17.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/linuxthreads/Examples/ex17.c b/linuxthreads/Examples/ex17.c new file mode 100644 index 0000000..1bc09a5 --- /dev/null +++ b/linuxthreads/Examples/ex17.c @@ -0,0 +1,112 @@ +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <pthread.h> +#include <unistd.h> +#include <limits.h> +#include <sys/mman.h> + +static pthread_mutex_t synch = PTHREAD_MUTEX_INITIALIZER; + +static void * +test_thread (void *v_param) +{ + pthread_mutex_lock (&synch); + return NULL; +} + +#define STACKSIZE 0x100000 + +int +main (void) +{ + pthread_t thread; + pthread_attr_t attr; + int status; + void *stack, *stack2; + size_t stacksize; + + pthread_attr_init (&attr); + stack = mmap (NULL, STACKSIZE, + PROT_READ | PROT_WRITE | PROT_EXEC, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (stack == MAP_FAILED) + { + perror ("mmap failed"); + return 1; + } + + status = pthread_attr_setstack (&attr, stack, STACKSIZE); + if (status != 0) + { + printf ("pthread_attr_setstack failed: %s\n", strerror (status)); + return 1; + } + + status = pthread_attr_getstack (&attr, &stack2, &stacksize); + if (status != 0) + { + printf ("pthread_attr_getstack failed: %s\n", strerror (status)); + return 1; + } + + if (stack2 != stack || stacksize != STACKSIZE) + { + printf ("first pthread_attr_getstack returned different stack (%p,%zx)\n" + "than was set by setstack (%p,%x)\n", + stack2, stacksize, stack, STACKSIZE); + return 2; + } + + status = pthread_mutex_lock (&synch); + if (status != 0) + { + printf ("cannot get lock: %s\n", strerror (status)); + return 1; + } + + status = pthread_create (&thread, &attr, test_thread, NULL); + if (status != 0) + { + printf ("pthread_create failed: %s\n", strerror (status)); + return 1; + } + + status = pthread_getattr_np (thread, &attr); + if (status != 0) + { + printf ("pthread_getattr_np failed: %s\n", strerror (status)); + return 1; + } + + status = pthread_attr_getstack (&attr, &stack2, &stacksize); + if (status != 0) + { + printf ("pthread_attr_getstack failed: %s\n", strerror (status)); + return 1; + } + + if (stack2 != stack || stacksize != STACKSIZE) + { + printf ("second pthread_attr_getstack returned different stack (%p,%zx)\n" + "than was set by setstack (%p,%x)\n", + stack2, stacksize, stack, STACKSIZE); + return 3; + } + + status = pthread_mutex_unlock (&synch); + if (status != 0) + { + printf ("cannot release lock: %s\n", strerror (status)); + return 1; + } + + /* pthread_detach (thread); */ + if (pthread_join (thread, NULL) != 0) + { + printf ("join failed\n"); + return 1; + } + return 0; +} |