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c6f0559371
variable. Remove thread locking for non-thread-safe functions, instead throw a compile error. Platforms will have to re-run tools/thread to record their thread safety.
137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/*-------------------------------------------------------------------------
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*
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* test_thread_funcs.c
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* libc thread test program
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*
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* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/tools/thread/thread_test.c,v 1.7 2004/02/11 21:44:06 momjian Exp $
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*
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* This program tests to see if your standard libc functions use
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* pthread_setspecific()/pthread_getspecific() to be thread-safe.
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* See src/port/thread.c for more details.
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*
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* This program first tests to see if each function returns a constant
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* memory pointer within the same thread, then, assuming it does, tests
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* to see if the pointers are different for different threads. If they
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* are, the function is thread-safe.
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*
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*-------------------------------------------------------------------------
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*/
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#include <pthread.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <netdb.h>
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#include <sys/types.h>
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#include <pwd.h>
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#include <string.h>
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#include <errno.h>
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void func_call_1(void);
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void func_call_2(void);
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char *strerror_p1;
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char *strerror_p2;
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struct passwd *passwd_p1;
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struct passwd *passwd_p2;
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struct hostent *hostent_p1;
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struct hostent *hostent_p2;
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int main(int argc, char *argv[])
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{
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pthread_t thread1,
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thread2;
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if (argc > 1)
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{
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fprintf(stderr, "Usage: %s\n", argv[0]);
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return 1;
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}
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printf("\
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Make sure you have added any needed 'THREAD_CPPFLAGS' and 'THREAD_LIBS'\n\
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defines to your template/$port file before compiling this program.\n\n"
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);
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pthread_create(&thread1, NULL, (void * (*)(void *)) func_call_1, NULL);
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pthread_create(&thread2, NULL, (void * (*)(void *)) func_call_2, NULL);
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pthread_join(thread1, NULL);
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pthread_join(thread2, NULL);
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printf("Add this to your template/$port file:\n\n");
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if (strerror_p1 != strerror_p2)
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printf("STRERROR_THREADSAFE=yes\n");
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else
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printf("STRERROR_THREADSAFE=no\n");
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if (passwd_p1 != passwd_p2)
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printf("GETPWUID_THREADSAFE=yes\n");
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else
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printf("GETPWUID_THREADSAFE=no\n");
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if (hostent_p1 != hostent_p2)
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printf("GETHOSTBYNAME_THREADSAFE=yes\n");
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else
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printf("GETHOSTBYNAME_THREADSAFE=no\n");
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return 0;
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}
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void func_call_1(void) {
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void *p;
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strerror_p1 = strerror(EACCES);
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/*
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* If strerror() uses sys_errlist, the pointer might change for different
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* errno values, so we don't check to see if it varies within the thread.
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*/
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passwd_p1 = getpwuid(0);
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p = getpwuid(1);
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if (passwd_p1 != p)
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{
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printf("Your getpwuid() changes the static memory area between calls\n");
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passwd_p1 = NULL; /* force thread-safe failure report */
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}
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hostent_p1 = gethostbyname("yahoo.com");
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p = gethostbyname("slashdot.org");
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if (hostent_p1 != p)
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{
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printf("Your gethostbyname() changes the static memory area between calls\n");
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hostent_p1 = NULL; /* force thread-safe failure report */
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}
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}
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void func_call_2(void) {
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void *p;
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strerror_p2 = strerror(EINVAL);
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/*
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* If strerror() uses sys_errlist, the pointer might change for different
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* errno values, so we don't check to see if it varies within the thread.
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*/
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passwd_p2 = getpwuid(2);
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p = getpwuid(3);
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if (passwd_p2 != p)
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{
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printf("Your getpwuid() changes the static memory area between calls\n");
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passwd_p2 = NULL; /* force thread-safe failure report */
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}
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hostent_p2 = gethostbyname("google.com");
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p = gethostbyname("postgresql.org");
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if (hostent_p2 != p)
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{
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printf("Your gethostbyname() changes the static memory area between calls\n");
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hostent_p2 = NULL; /* force thread-safe failure report */
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}
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}
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