diff options
| -rw-r--r-- | docs/threads.txt | 540 |
1 files changed, 226 insertions, 314 deletions
diff --git a/docs/threads.txt b/docs/threads.txt index 2d5d9e623..d31a56d58 100644 --- a/docs/threads.txt +++ b/docs/threads.txt @@ -33,9 +33,9 @@ http://www.vitanuova.com/inferno/index.html None of these functions are currently implemented in the uClibc library, so they must be added. - flockfile <required> <--- - ftrylockfile <required> <--- - funlockfile <required> <--- + flockfile <implemented> + ftrylockfile <implemented> + funlockfile <implemented> 1.2 Functions that must use buffer access mutexes, according to Butenhof @@ -43,10 +43,10 @@ http://www.vitanuova.com/inferno/index.html buffer access mutexes. This does not represent all functions that need to use the mutexes. - getc <mutex required> <--- - getchar <mutex required> <--- - putc <mutex required> <--- - putchar <mutex required> <--- + getc <mutex required> + getchar <mutex required> + putc <mutex required> + putchar <mutex required> 1.3 Functions from glibc (libio) that use buffer access mutexes @@ -57,21 +57,21 @@ http://www.vitanuova.com/inferno/index.html The rest may require the access mutex. (These must be analyzed on a case-by-case basis.) - clearerr <mutex required> <--- - feof <mutex required> <--- - ferror <mutex required> <--- - fputc <mutex required> <--- + clearerr <mutex required> + feof <mutex required> + ferror <mutex required> + fputc <mutex required> fputwc <not supported> - freopen <mutex required> <--- - freopen64 <not supported> - fseek <mutex required> <--- - fseeko <not supported> - fseeko64 <not supported> - ftello <not supported> - ftello64 <not supported> + freopen <mutex required> + freopen64 <mutex required> + fseek <mutex required> + fseeko <mutex required> + fseeko64 <mutex required> + ftello <mutex required> + ftello64 <mutex required> fwide <not supported> - getc <macro for fgetc> - getchar <macro for fgetc> + getc <mutex required> + getchar <mutex required> getwc <not supported> getwchar <not supported> iofclose <not supported> @@ -102,49 +102,50 @@ http://www.vitanuova.com/inferno/index.html oldiofsetpos <not supported> oldiofsetpos64 <not supported> peekc <not supported> - putc <macro for fputc> - putchar <macro for fputc> + putc <mutex required> + putchar <mutex required> putwc <not supported> putwchar <not supported> - rewind <mutex required> <--- + rewind <mutex required> 1.4 Functions from Proventhreads that use buffer access mutexes See description above. This applies only to the C library included in the proventhreads distribution. - clearerr <mutex required> <--- - fclose <mutex required> <--- - fflush <mutex required> <--- - fgetc <mutex required> <--- + clearerr <mutex required> + fclose <mutex required> + fflush <mutex required> + fgetc <mutex required> __getc <not supported> fgetline <not supported> - fgetpos <mutex required> <--- - fgets <mutex required> <--- + fgetpos <mutex required> + fgetpos64 <mutex required> + fgets <mutex required> fpurge <not supported> - fputc <mutex required> <--- + fputc <mutex required> __putc <not supported> - fputs <mutex required> <--- - fread <mutex required> <--- - freopen <mutex required> <--- - fscanf <mutex required> <--- - fseek <mutex required> <--- - ftell <mutex required> <--- + fputs <mutex required> + fread <mutex required> + freopen <mutex required> + fscanf <mutex required> + fseek <mutex required> + ftell <mutex required> fwalk <not supported> - fwrite <mutex required> <--- - getc <macro for fgetc> - getchar <mutex required> <--- - putc <macro for fputc> - putchar <mutex required> <--- - puts <mutex required> <--- - putw <not supported> + fwrite <mutex required> + getc <mutex required> + getchar <mutex required> + putc <mutex required> + putchar <mutex required> + puts <mutex required> + putw <mutex _not_ required> refill <not supported> - rewind <mutex required> <--- - scanf <mutex required> <--- - setvbuf <mutex required> <--- - ungetc <mutex required> <--- - vfprintf <mutex required> <--- - vscanf <mutex required> <--- + rewind <mutex required> + scanf <mutex required> + setvbuf <mutex required> + ungetc <mutex required> + vfprintf <mutex required> + vscanf <mutex required> 1.5 Unlocked buffer access @@ -155,10 +156,10 @@ http://www.vitanuova.com/inferno/index.html then use getc_unlocked within the loop for speed. That way, the lock only needs to be grabbed and released once, rather than for each call. - getc_unlocked <required> <--- - getchar_unlocked <required> <--- - putc_unlocked <required> <--- - putchar_unlocked <required> <--- + getc_unlocked <implemented + getchar_unlocked <implemented + putc_unlocked <implemented + putchar_unlocked <implemented 1.6 Additional unlocked calls made in glibc @@ -166,17 +167,17 @@ http://www.vitanuova.com/inferno/index.html glibc library uses for unlocked buffer access. Though not strictly necessary, these may be nice to have in uClibc. - fileno_unlocked <desired> <--- - clearerr_unlocked <desired> <--- - feof_unlocked <desired> <--- - ferror_unlocked <desired> <--- - fputc_unlocked <desired> <--- - fgetc_unlocked <desired> <--- - fflush_unlocked <desired> <--- - fread_unlocked <desired> <--- - fwrite_unlocked <desired> <--- - fgets_unlocked <desired> <--- - fputs_unlocked <desired> <--- + fileno_unlocked <implemented + clearerr_unlocked <implemented + feof_unlocked <implemented + ferror_unlocked <implemented + fputc_unlocked <implemented + fgetc_unlocked <implemented + fflush_unlocked <implemented + fread_unlocked <implemented + fwrite_unlocked <implemented + fgets_unlocked <implemented + fputs_unlocked <implemented 1.7 Additional unlocked calls made in Proventhreads @@ -203,16 +204,13 @@ http://www.vitanuova.com/inferno/index.html 2.1 User and terminal identification: getlogin_r <implemented> - ctermid <implemented> (1) - ttyname_r <required> <--- + ctermid <implemented> + ttyname_r <implemented> - 1. ctermid is a special case. The signature has not changed, but a - requirement has been added that its parameter point to a structure - of exactly L_ctermid bytes. 2.2 Directory searching - readdir_r <required> <--- + readdir_r <implemented> 2.3 String token @@ -227,7 +225,7 @@ http://www.vitanuova.com/inferno/index.html 2.5 Random number generation - rand_r <required> <--- + rand_r <implemented 2.6 Group and user database @@ -244,12 +242,9 @@ http://www.vitanuova.com/inferno/index.html thread-safe version. Those that do apply, but have not been implemented yet are highlighted. - __fgetpwent_r <not supported> fgetpwent_r <implemented> - __ttyname_r <not supported> getttyname_r <not supported> - __getmntent_r <not supported> - getmntent_r <desired> <--- + getmntent_r <implemented> ecvt_r <not supported> fcvt_r <not supported> qecvt_r <not supported> @@ -257,83 +252,86 @@ http://www.vitanuova.com/inferno/index.html hcreate_r <not supported> hdestroy_r <not supported> hsearch_r <not supported> + getspent_r <implemented> + getspnam_r <implemented> + sgetspent_r <implemented> + fgetspent_r <implemented> + gethostbyaddr_r <implemented> + gethostbyname2_r <implemented> + gethostbyname_r <implemented> + gethostent_r <desired> <--- + getnetbyaddr_r <desired> <--- + getnetent_r <desired> <--- + getnetbyname_r <desired> <--- + getprotobynumber_r <desired> <--- + getprotoent_r <desired> <--- + getprotobyname_r <desired> <--- + getservbyname_r <implemented> + getservbyport_r <implemented> + getservent_r <implemented> + getrpcent_r <desired> <--- + getrpcbyname_r <desired> <--- + getrpcbynumber_r <implemented> + ether_aton_r <not supported> + ether_ntoa_r <not supported> + getnetgrent_r <not supported> + getaliasent_r <not supported> + getaliasbyname_r <not supported> + nscd_getpw_r <not supported> + nscd_getgr_r <not supported> + nscd_gethst_r <not supported> + getutent_r <desired> <--- + getutent_r_unknown <not supported> + getutid_r_unknown <not supported> + getutline_r_unknown <not supported> + getutid_r <desired> <--- + getutline_r <required> <--- + getutent_r_file <not supported> + getutid_r_file <not supported> + getutline_r_file <not supported> + internal_getut_r <not supported> + getutent_r_daemon <not supported> + getutid_r_daemon <not supported> + getutline_r_daemon <not supported> + ptsname_r <not supported> + __fgetpwent_r <not supported> + __ttyname_r <not supported> + __getmntent_r <not supported> __getspent_r <not supported> - getspent_r <not supported> __getspnam_r <not supported> - getspnam_r <not supported> __sgetspent_r <not supported> - sgetspent_r <not supported> __fgetspent_r <not supported> - fgetspent_r <not supported> __gethostbyaddr_r <not supported> - gethostbyaddr_r <desired> <--- __gethostbyname2_r <not supported> - gethostbyname2_r <not supported> __gethostbyname_r <not supported> - gethostbyname_r <desired> <--- __gethostent_r <not supported - gethostent_r <not supported> __getnetbyaddr_r <not supported> - getnetbyaddr_r <desired> <--- __getnetent_r <not supported> - getnetent_r <desired> <--- __getnetbyname_r <not supported> - getnetbyname_r <desired> <--- __getprotobynumber_r <not supported> - getprotobynumber_r <desired> <--- __getprotoent_r <not supported> - getprotoent_r <desired> <--- __getprotobyname_r <not supported> - getprotobyname_r <desired> <--- __getservbyname_r <not supported> - getservbyname_r <desired> <--- __getservbyport_r <not supported> - getservbyport_r <desired> <--- - __getservent_r <not supported> - getservent_r <desired> <--- __getrpcent_r <not supported> - getrpcent_r <desired> <--- + __getservent_r <not supported> __getrpcbyname_r <not supported> - getrpcbyname_r <desired> <--- __getrpcbynumber_r <not supported> - getrpcbynumber_r <desired> <--- - ether_aton_r <not supported> - ether_ntoa_r <not supported> __getnetgrent_r <not supported> __internal_getnetgrent_r <not supported> - getnetgrent_r <not supported> __getaliasent_r <not supported> - getaliasent_r <not supported> __getaliasbyname_r <not supported> - getaliasbyname_r <not supported> __nscd_getpwnam_r <not supported> __nscd_getpwuid_r <not supported> - nscd_getpw_r <not supported> __nscd_getgrgid_r <not supported> __nscd_getgrnam_r <not supported> - nscd_getgr_r <not supported> __nscd_gethostbyaddr_r <not supported> __nscd_gethostbyname2_r <not supported> __nscd_gethostbyname_r <not supported> - nscd_gethst_r <not supported> - __getutent_r <desired> <--- - getutent_r <desired> <--- - getutent_r_unknown <not supported> - getutid_r_unknown <not supported> - getutline_r_unknown <not supported> + __getutent_r <not supported> __getutid_r <not supported> - getutid_r <desired> <--- __getutline_r <not supported> - getutline_r <required> <--- - getutent_r_file <not supported> - getutid_r_file <not supported> - getutline_r_file <not supported> - internal_getut_r <not supported> - getutent_r_daemon <not supported> - getutid_r_daemon <not supported> - getutline_r_daemon <not supported> __ptsname_r <not supported> - ptsname_r <not supported> 2.8 Additional thread-safe functions implemented by Proventhreads @@ -341,9 +339,9 @@ http://www.vitanuova.com/inferno/index.html See description above. This applies only to the C library included in the proventhreads distribution. - inet_ntoa_r <desired> <--- - gethostbyaddr_r <desired> <--- - gethostbyname_r <desired> <--- + inet_ntoa_r <implemented> + gethostbyaddr_r <implemented> + gethostbyname_r <implemented> gethostent_r <not supported> getnetbyaddr_r <desired> <--- getnetbyname_r <desired> <--- @@ -351,9 +349,9 @@ http://www.vitanuova.com/inferno/index.html getprotobynumber_r <desired> <--- getprotoent_r <desired> <--- getprotobyname_r <desired> <--- - getservbyname_r <desired> <--- - getservbyport_r <desired> <--- - getservent_r <desired> <--- + getservbyname_r <implemented> + getservbyport_r <implemented> + getservent_r <implemented> 3. List of functions in uClibc that use static data structures @@ -375,11 +373,38 @@ http://www.vitanuova.com/inferno/index.html -------------------------------------------------------------------- + crypt/des.c: + + static u_char inv_key_perm[64]; + static u_char inv_comp_perm[56]; + static u_char u_sbox[8][64]; + static u_char u_key_perm[56]; + static u_char un_pbox[32]; + static u_int32_t en_keysl[16], en_keysr[16]; + static u_int32_t de_keysl[16], de_keysr[16]; + static u_int32_t ip_maskl[8][256], ip_maskr[8][256]; + static u_int32_t fp_maskl[8][256], fp_maskr[8][256]; + static u_int32_t key_perm_maskl[8][128], key_perm_maskr[8][128]; + static u_int32_t comp_maskl[8][128], comp_maskr[8][128]; + static u_int32_t saltbits; + + __des_crypt_r <implemented badly!> <--- + + This needs to be fixed to actually be reentrant. Right now it + just fakes it, which is pretty lame.... All the above should be + moved into a 'struct des_context' or some such... + + -------------------------------------------------------------------- + crypt/md5.c: - static unsigned char PADDING[64] <fix desired> <--- + static const char __md5__magic[]; + static const unsigned char __md5_itoa64[]; - NOTE: This is okay, but should use the const keyword. + __md5_crypt_r <implemented> + + No problems here... + -------------------------------------------------------------------- @@ -387,7 +412,8 @@ http://www.vitanuova.com/inferno/index.html static char buf[16]; - inet_ntoa <inet_ntoa_r not implemented> <--- + inet_ntoa <implemented> + inet_ntoa_r <implemented> -------------------------------------------------------------------- @@ -398,12 +424,12 @@ http://www.vitanuova.com/inferno/index.html static struct netent net; static char *net_aliases[MAXALIASES]; - setnetent <fix required> <--- - endnetent <fix required> <--- - getnetent <getnetent_r required> <--- + setnetent <mutex required> + endnetent <mutex required> + getnetent <mutex required> + getnetent_r <not implemented> NOTE: setnetent and endnetent are not implemented in glibc. - Proventhreads uses pthread mutexes to protect this static data. -------------------------------------------------------------------- @@ -415,14 +441,16 @@ http://www.vitanuova.com/inferno/index.html static char *proto_aliases[MAXALIASES]; static int proto_stayopen; - setprotoent <fix required> <--- - endprotoent <fix required> <--- - getprotoent <getprotoent_r required> <--- - getprotobyname <getprotobyname_r required> <--- - getprotobynumber <getprotobynumber required> <--- + setprotoent <mutex required> + endprotoent <mutex required> + getprotoent <mutex required> + getprotoent_r <implemented> + getprotobyname <implemented> + getprotobyname_r <not implemented> + getprotobynumber <implemented> + getprotobynumber_r <not implemented> NOTE: setprotoent and endprotoent are not implemented in glibc. - Proventhreads uses pthread mutexes to protect this static data. -------------------------------------------------------------------- @@ -434,48 +462,44 @@ http://www.vitanuova.com/inferno/index.html static char *serv_aliases[MAXALIASES]; static int serv_stayopen; - setservent <fix required> <--- - endservent <fix required> <--- - getservent <getservent_r required> <--- - getservbyname <getservbyname_r required> <--- - getservbyport <getservbyport_r required> <--- + setservent <mutex required> + endservent <fix mutex required> + getservent <mutex required> + getservent_r <implemented> + getservbyname <mutex required> + getservbyname_r <implemented> + getservbyport <mutex required> + getservbyport_r <implemented> NOTE: setservent and endservent are not implemented in glibc. - Proventhreads uses pthread mutexes to protect this static data. -------------------------------------------------------------------- - net/resolv.c: + static struct hostent h; + static char buf[xxx]; - static int id = 1; - static int ns = 0; + gethostbyname <implemented> - dns_lookup <fix required> <--- - NOTE: dns_lookup is not implemented by glibc or Proventhreads. + static struct hostent h; + static char buf[xxx]; - static struct hostent h; - static char namebuf[256]; - static struct in_addr in; - static struct in_addr *addr_list[2]; + gethostbyname2 <implemented> - gethostbyname <gethostbyname_r required> <--- + static struct hostent h; + static char buf[xxx]; - static struct hostent h; - static char namebuf[256]; - static struct in_addr in; - static struct in_addr *addr_list[2]; + gethostbyaddr <implemented> - gethostbyaddr <gethostbyaddr_r required> <--- - static struct hostent h; - static struct in_addr in; - static struct in_addr *addr_list[2]; - static char line[80]; + static int __stay_open; + static FILE * __gethostent_fp; + static struct hostent h; + static char buf[xxx]; - read_etc_hosts <fix required> <--- - - NOTE: dns_lookup is not implemented by glibc or Proventhreads. + gethostent <mutex required> + sethostent <mutex required> + endhostent <mutex required> -------------------------------------------------------------------- @@ -912,7 +936,10 @@ http://www.vitanuova.com/inferno/index.html static uint64_t value; - __gen_tempname <fix required> <--- + __gen_tempname <no fix required> + + This is supposed to be random trash, so the more threading + collisions the better... -------------------------------------------------------------------- @@ -952,7 +979,8 @@ http://www.vitanuova.com/inferno/index.html static char buff[MNTMAXSTR]; static struct mntent mnt; - getmntent <getmntent_r required> <--- + getmntent <mutex required> + getmntent_r <implemented> -------------------------------------------------------------------- @@ -1086,19 +1114,20 @@ http://www.vitanuova.com/inferno/index.html misc/utmp/utent.c: - static int ut_fd = -1; + static int static_fd = -1; + static struct utmp static_utmp; + static const char default_file_name[] = _PATH_UTMP; + static const char *static_ut_name = (const char *) default_file_name; - setutent <fix required> <--- - endutent <fix required> <--- - getutent <fix required> <--- - getutid <fix required> <--- - getutline <fix required> <--- - pututline <fix required> <--- - utmpname <fix required> <--- - - static struct utmp utmp; - __getutent <fix required> <--- + setutent <ok> + endutent <ok> + getutent <ok> + getutid <ok> + getutline <ok> + pututline <ok> + utmpname <ok> + __getutent <ok> -------------------------------------------------------------------- @@ -1191,16 +1220,21 @@ http://www.vitanuova.com/inferno/index.html static int _bsearch; - bsearch <fix required> <--- + bsearch <ok> -------------------------------------------------------------------- - stdlib/putenv.c: + stdlib/setenv.c: - static char **mall_env = 0; - static int extras = 0; + static char **last_environ; - putenv <fix required> <--- + __add_to_environ <ok> + unsetenv <ok> + setenv <ok> + clearenv <ok> + putenv <ok> + + all ok now. -------------------------------------------------------------------- @@ -1219,17 +1253,6 @@ http://www.vitanuova.com/inferno/index.html -------------------------------------------------------------------- - stdlib/setenv.c: - - static pthread_once__t _once_block = pthread_once_init; (1) - static pthread_mutex_t _setenv_mutex; (1) - static char **last_environ = NULL; (1) - - 1: Obviously, nothing to do here. (Unless I change the way we - deal with threads). - - -------------------------------------------------------------------- - stdlib/malloc/avlmacro.h static objname *__Avl_##objname##pr##_new_node; @@ -1252,30 +1275,12 @@ http://www.vitanuova.com/inferno/index.html stdlib/malloc-930716/malloc.c: - static int heapsize; - static int initialized; - static size_t pagesize; + A bunch of stuff - inititalize <fix required> <--- - morecore <fix required> <--- - malloc <fix required> <--- - - -------------------------------------------------------------------- - - stdlib/malloc-930716/valloc.c: - - static size_t pagesize; - - valloc <fix required> <--- - - -------------------------------------------------------------------- - - string/config.c: - - static char *args[16]; - static char cfgbuf[128]; - - cfgread <fix required> <--- + malloc <ok> + realloc <ok> + free <ok> + etc <ok> -------------------------------------------------------------------- @@ -1285,7 +1290,7 @@ http://www.vitanuova.com/inferno/index.html static char retbuf[33]; strerror <fix required> <--- - main <fix required> <--- + strerror_r <fix required> <--- -------------------------------------------------------------------- @@ -1302,87 +1307,8 @@ http://www.vitanuova.com/inferno/index.html static char *save = 0; - strtok <strtok_r implemented> <--- - - -------------------------------------------------------------------- - - sysdeps/linux/common/kernel_version.c: - - static int __linux_kernel_version = -1; - - __get_linux_kernel_version <fix required> (1) - - 1: This static value never actually gets updated! This a bug. - - -------------------------------------------------------------------- - - sysdeps/linux/i386/bits/huge_val.h: - - static __huge_val_t __huge_val <fix desired> <--- - static __huge_valf_t __huge_valf <fix desired> <--- - static __huge_vall_t __huge_vall <fix desired> <--- - - NOTE: These are okay, but should use the const keyword. - - -------------------------------------------------------------------- - - sysdeps/linux/i386/bits/nan.h: - - static union { ... } __nan_union <fix desired> <--- - - NOTE: This is okay, but should use the const keyword. - - -------------------------------------------------------------------- - - sysdeps/linux/m68k/bits/huge_val.h: - - static union { ... } __huge_val <fix desired> <--- - static union { ... } __huge_valf <fix desired> <--- - static union { ... } __huge_vall <fix desired> <--- - - NOTE: These are okay, but should use the const keyword. - - -------------------------------------------------------------------- - - sysdeps/linux/m68k/bits/nan.h: - - static union { ... } __nan_union <fix desired> <--- - - NOTE: This is okay, but should use the const keyword. - - -------------------------------------------------------------------- - - sysdeps/linux/sh/bits/huge_val.h: - - static __huge_val_t __huge_val <fix desired> <--- - static __huge_valf_t __huge_valf <fix desired> <--- - - NOTE: These are okay, but should use the const keyword. - - -------------------------------------------------------------------- - - sysdeps/linux/sh/bits/nan.h: - - static union { ... } __nan_union <fix desired> <--- - - NOTE: This is okay, but should use the const keyword. - - -------------------------------------------------------------------- - - sysdeps/linux/sparc/bits/huge_val.h: - - static __huge_val_t __huge_val <fix desired> <--- - static __huge_valf_t __huge_valf <fix desired> <--- - - NOTE: These are okay, but should use the const keyword. - - -------------------------------------------------------------------- - - sysdeps/linux/sparc/bits/nan.h: - - static union { ... } __nan_union <fix desired> <--- - - NOTE: This is okay, but should use the const keyword. + strtok <ok> + strtok_r <ok> -------------------------------------------------------------------- @@ -1418,20 +1344,6 @@ http://www.vitanuova.com/inferno/index.html -------------------------------------------------------------------- - unistd/getcwd.c: - - static char *path_buf; - static int path_size; - static dev_t root_dev; - static ino_t root_ino; - static struct stat st; - - getswd <fix required> <--- - recurser <fix required> <--- - search_dir <fix required> <--- - - -------------------------------------------------------------------- - unistd/getopt.c: static int sp = 1; |