|
| 1 | +/*------------------------------------------------------------------------- |
| 2 | + * |
| 3 | + * test_thread_funcs.c |
| 4 | + * libc thread test program |
| 5 | + * |
| 6 | + * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group |
| 7 | + * Portions Copyright (c) 1994, Regents of the University of California |
| 8 | + * |
| 9 | + *$Header: /cvsroot/pgsql/src/tools/Attic/test_thread_funcs.c,v 1.1 2003/09/03 19:30:31 momjian Exp $ |
| 10 | + * |
| 11 | + *This program tests to see if your standard libc functions use |
| 12 | + *pthread_setspecific()/pthread_getspecific() to be thread-safe. |
| 13 | + *See src/port/thread.c for more details. |
| 14 | + * |
| 15 | + *This program first tests to see if each function returns a constant |
| 16 | + *memory pointer within the same thread, then, assuming it does, tests |
| 17 | + *to see if the pointers are different for different threads. If they |
| 18 | + *are, the function is thread-safe. |
| 19 | + * |
| 20 | + *This program must be compiled with the thread flags required by your |
| 21 | + *operating system. See src/template for the appropriate flags, if any. |
| 22 | + * |
| 23 | + *------------------------------------------------------------------------- |
| 24 | + */ |
| 25 | + |
| 26 | + |
| 27 | +#include<pthread.h> |
| 28 | +#include<unistd.h> |
| 29 | +#include<stdio.h> |
| 30 | +#include<stdlib.h> |
| 31 | +#include<netdb.h> |
| 32 | +#include<sys/types.h> |
| 33 | +#include<pwd.h> |
| 34 | +#include<string.h> |
| 35 | +#include<errno.h> |
| 36 | + |
| 37 | +voidfunc_call_1(void); |
| 38 | +voidfunc_call_2(void); |
| 39 | + |
| 40 | +structhostent*hostent_p1; |
| 41 | +structhostent*hostent_p2; |
| 42 | + |
| 43 | +structpasswd*passwd_p1; |
| 44 | +structpasswd*passwd_p2; |
| 45 | + |
| 46 | +char*strerror_p1; |
| 47 | +char*strerror_p2; |
| 48 | + |
| 49 | +intmain(intargc,char*argv[]) |
| 50 | +{ |
| 51 | +pthread_tthread1, |
| 52 | +thread2; |
| 53 | + |
| 54 | +if (argc>1) |
| 55 | +{ |
| 56 | +fprintf(stderr,"Usage: %s\n",argv[0]); |
| 57 | +return1; |
| 58 | +} |
| 59 | + |
| 60 | +pthread_create(&thread1,NULL, (void*)func_call_1,NULL); |
| 61 | +pthread_create(&thread2,NULL, (void*)func_call_2,NULL); |
| 62 | +pthread_join(thread1,NULL); |
| 63 | +pthread_join(thread2,NULL); |
| 64 | + |
| 65 | +if (hostent_p1!=hostent_p2&& |
| 66 | +passwd_p1!=passwd_p2&& |
| 67 | +strerror_p1!=strerror_p2) |
| 68 | +printf("Your functions are all thread-safe\n"); |
| 69 | +else |
| 70 | +printf("Your functions are _not_ all thread-safe\n"); |
| 71 | + |
| 72 | +return0; |
| 73 | +} |
| 74 | + |
| 75 | +voidfunc_call_1(void) { |
| 76 | +void*p; |
| 77 | + |
| 78 | +hostent_p1=gethostbyname("yahoo.com"); |
| 79 | +p=gethostbyname("slashdot.org"); |
| 80 | +if (hostent_p1!=p) |
| 81 | +{ |
| 82 | +printf("Your gethostbyname() changes the static memory area between calls\n"); |
| 83 | +hostent_p1=NULL;/* force thread-safe failure report */ |
| 84 | +} |
| 85 | + |
| 86 | +passwd_p1=getpwuid(0); |
| 87 | +p=getpwuid(1); |
| 88 | +if (passwd_p1!=p) |
| 89 | +{ |
| 90 | +printf("Your getpwuid() changes the static memory area between calls\n"); |
| 91 | +passwd_p1=NULL;/* force thread-safe failure report */ |
| 92 | +} |
| 93 | + |
| 94 | +strerror_p1=strerror(EACCES); |
| 95 | +/* |
| 96 | + *If strerror() uses sys_errlist, the pointer might change for different |
| 97 | + *errno values, so we don't check to see if it varies within the thread. |
| 98 | + */ |
| 99 | +} |
| 100 | + |
| 101 | + |
| 102 | +voidfunc_call_2(void) { |
| 103 | +void*p; |
| 104 | + |
| 105 | +hostent_p2=gethostbyname("google.com"); |
| 106 | +p=gethostbyname("postgresql.org"); |
| 107 | +if (hostent_p2!=p) |
| 108 | +{ |
| 109 | +printf("Your gethostbyname() changes the static memory area between calls\n"); |
| 110 | +hostent_p2=NULL;/* force thread-safe failure report */ |
| 111 | +} |
| 112 | + |
| 113 | +passwd_p2=getpwuid(2); |
| 114 | +p=getpwuid(3); |
| 115 | +if (passwd_p2!=p) |
| 116 | +{ |
| 117 | +printf("Your getpwuid() changes the static memory area between calls\n"); |
| 118 | +passwd_p2=NULL;/* force thread-safe failure report */ |
| 119 | +} |
| 120 | + |
| 121 | +strerror_p2=strerror(EINVAL); |
| 122 | +/* |
| 123 | + *If strerror() uses sys_errlist, the pointer might change for different |
| 124 | + *errno values, so we don't check to see if it varies within the thread. |
| 125 | + */ |
| 126 | +} |