diff options
Diffstat (limited to 'src/tools/thread/thread_test.c')
| -rw-r--r-- | src/tools/thread/thread_test.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/tools/thread/thread_test.c b/src/tools/thread/thread_test.c new file mode 100644 index 00000000000..7beb63dff4a --- /dev/null +++ b/src/tools/thread/thread_test.c @@ -0,0 +1,159 @@ +/*------------------------------------------------------------------------- + * + * test_thread_funcs.c + * libc thread test program + * + * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * $Header: /cvsroot/pgsql/src/tools/thread/Attic/thread_test.c,v 1.1 2003/09/27 15:32:48 momjian Exp $ + * + * This program tests to see if your standard libc functions use + * pthread_setspecific()/pthread_getspecific() to be thread-safe. + * See src/port/thread.c for more details. + * + * This program first tests to see if each function returns a constant + * memory pointer within the same thread, then, assuming it does, tests + * to see if the pointers are different for different threads. If they + * are, the function is thread-safe. + * + *------------------------------------------------------------------------- + */ + + +#include <pthread.h> +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <netdb.h> +#include <sys/types.h> +#include <pwd.h> +#include <string.h> +#include <errno.h> + +void func_call_1(void); +void func_call_2(void); + +#ifndef HAVE_GETADDRINFO +struct hostent *hostent_p1; +struct hostent *hostent_p2; +#endif + +struct passwd *passwd_p1; +struct passwd *passwd_p2; + +char *strerror_p1; +char *strerror_p2; + +int main(int argc, char *argv[]) +{ + pthread_t thread1, + thread2; + + if (argc > 1) + { + fprintf(stderr, "Usage: %s\n", argv[0]); + return 1; + } + + printf("\ +Make sure you have added any needed 'THREAD_CPPFLAGS' and 'THREAD_LIBS'\n\ +defines to your template/${port} file before compiling this program.\n\n" +); + pthread_create(&thread1, NULL, (void * (*)(void *)) func_call_1, NULL); + pthread_create(&thread2, NULL, (void * (*)(void *)) func_call_2, NULL); + pthread_join(thread1, NULL); + pthread_join(thread2, NULL); + +#ifndef HAVE_GETADDRINFO + if (hostent_p1 == hostent_p2) + printf("Your gethostbyname() is _not_ thread-safe\n"); +#endif + if (passwd_p1 == passwd_p2) + printf("Your getpwuid() is _not_ thread-safe\n"); + if (strerror_p1 == strerror_p2) + printf("Your strerror() is _not_ thread-safe\n"); + + if ( +#ifndef HAVE_GETADDRINFO + hostent_p1 != hostent_p2 && +#endif + passwd_p1 != passwd_p2 && + strerror_p1 != strerror_p2) + { + printf("All your non-*_r functions are thread-safe.\n"); + printf("Add this to your template/${port} file:\n\n"); + printf("\ +SUPPORTS_THREADS=yes\n\ +NEED_REENTRANT_FUNCS=no\n" + ); + } + else + { + printf("Not all non-*_r functions are thread-safe.\n"); + printf("Add this to your template/${port} file:\n\n"); + printf("\ +SUPPORTS_THREADS=yes\n\ +NEED_REENTRANT_FUNCS=yes\n" + ); + } + + return 0; +} + +void func_call_1(void) { + void *p; + +#ifndef HAVE_GETADDRINFO + hostent_p1 = gethostbyname("yahoo.com"); + p = gethostbyname("slashdot.org"); + if (hostent_p1 != p) + { + printf("Your gethostbyname() changes the static memory area between calls\n"); + hostent_p1 = NULL; /* force thread-safe failure report */ + } +#endif + + passwd_p1 = getpwuid(0); + p = getpwuid(1); + if (passwd_p1 != p) + { + printf("Your getpwuid() changes the static memory area between calls\n"); + passwd_p1 = NULL; /* force thread-safe failure report */ + } + + strerror_p1 = strerror(EACCES); + /* + * If strerror() uses sys_errlist, the pointer might change for different + * errno values, so we don't check to see if it varies within the thread. + */ +} + + +void func_call_2(void) { + void *p; + +#ifndef HAVE_GETADDRINFO + hostent_p2 = gethostbyname("google.com"); + p = gethostbyname("postgresql.org"); + if (hostent_p2 != p) + { + printf("Your gethostbyname() changes the static memory area between calls\n"); + hostent_p2 = NULL; /* force thread-safe failure report */ + } +#endif + + passwd_p2 = getpwuid(2); + p = getpwuid(3); + if (passwd_p2 != p) + { + printf("Your getpwuid() changes the static memory area between calls\n"); + passwd_p2 = NULL; /* force thread-safe failure report */ + } + + strerror_p2 = strerror(EINVAL); + /* + * If strerror() uses sys_errlist, the pointer might change for different + * errno values, so we don't check to see if it varies within the thread. + */ +} |