diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/port/thread.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/port/thread.c b/src/port/thread.c index 193b2e0808b..bfc315cc0e4 100644 --- a/src/port/thread.c +++ b/src/port/thread.c @@ -7,7 +7,7 @@ * * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * - * $Id: thread.c,v 1.7 2003/09/13 14:49:51 momjian Exp $ + * $Id: thread.c,v 1.8 2003/09/15 02:30:29 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -17,6 +17,7 @@ #include <pthread.h> #include <sys/types.h> #include <pwd.h> +#include <errno.h> /* * Threading sometimes requires specially-named versions of functions @@ -48,6 +49,12 @@ * use *_r functions if they exist (configure test) * do our own locking and copying of non-threadsafe functions * + * The disadvantage of the last option is not the thread overhead but + * the fact that all function calls are serialized, and with gethostbyname() + * requiring a DNS lookup, that could be slow. + * + * One thread-safe solution for gethostbyname() might be to use getaddrinfo(). + * * Compile and run src/tools/test_thread_funcs.c to see if your operating * system has thread-safe non-*_r functions. */ @@ -143,7 +150,10 @@ pqGetpwuid(uid_t uid, struct passwd *resultbuf, char *buffer, *result = resultbuf; } else + { *result = NULL; + errno = ERANGE; + } pthread_mutex_unlock(&getpwuid_lock); #endif @@ -239,7 +249,10 @@ pqGethostbyname(const char *name, *result = resultbuf; } else + { *result = NULL; + errno = ERANGE; + } } #endif |